Scoring tool developed to quantify habitat condition

SCCWRP and its partners have developed a statewide scoring tool for quantifying the condition of a stream’s physical habitat, enabling watershed managers for the first time to readily interpret and ... More

Science tools for proposed stream biointegrity-biostimulatory policy released in draft form

The State Water Board has published draft versions of a suite of technical reports, journal manuscripts and tools co-authored by SCCWRP that will serve as the technical foundation for the ... More

New workgroup to standardize DNA-based methods for routine aquatic monitoring

The California Water Quality Monitoring Council has formed a statewide workgroup to be led by SCCWRP that will examine how to bring greater consistency and standardization to DNA-based analysis methods ... More

Environmental flows study to determine impacts of diverting discharges from L.A. River

Water-quality managers that work in the Los Angeles River watershed have initiated a two-year study to determine the potential ecological and recreational effects of diverting treated wastewater effluent and runoff ... More

Ephemeral stream scoring tools being transitioned to management use

A new set of tools co-developed by SCCWRP to assess the condition of ephemeral streams when they are dry is being transitioned to pilot testing by the end-user management community. ... More

Effort launched to develop West Coast DNA barcoding library for marine invertebrates

The Smithsonian Institute has partnered with SCCWRP, the Southern California Bight 2018 Regional Monitoring Program and the Western Association of Marine Labs to begin developing a DNA barcoding library that ... More

Agreement reached on DNA processing, analysis methods for stream food webs study

The technical advisory group for a study examining how ecological stress alters the complexity and interconnectedness of stream food webs has reached agreement on the DNA processing and analysis methods ... More

Santa Margarita River study examining how to develop ‘climate-ready’ eutrophication targets

SCCWRP and its partners have begun investigating how climate change could influence efforts to reduce eutrophication in the Santa Margarita River watershed, part of a five-year study exploring how to ... More

Expert panel convened to develop acidification thresholds for echinoderms

SCCWRP has convened a nine-member panel of leading experts on sea stars, urchins and other echinoderms to reach agreement on how to use these organisms to track ocean acidification’s biological ... More

Acidification modeling effort being expanded to toxic marine algal blooms

Researchers working to develop a West Coast computer model that predicts how land-based nutrient sources influence coastal ocean acidification and hypoxia are expanding the effort to examine the potential role ... More

Advisory committee to review workplan for study revisiting copper TMDL in Marina del Rey Harbor

  A technical advisory committee in December is scheduled to review the draft workplan for a study examining whether existing regulatory targets for dissolved copper in Marina del Rey Harbor ... More

Field sampling completed for study probing origins of sediment contaminants that bioaccumulate in fish

SCCWRP and its partners in October completed the second and final round of field sampling for a study investigating whether legacy contaminants found in the tissue of San Diego Bay ... More

Study to explore potentially cheaper, more precise methods for quantifying cyanotoxins in lakes, streams

SCCWRP and its partners have launched a three-year study to evaluate potentially cheaper, more precise sampling and analysis methods for tracking cyanotoxin levels in streams and lakes in the Los ... More

Study launched to determine possible link between Mexican treatment plant and fecal contamination at Imperial Beach

SCCWRP and its partners have initiated a year-long study to investigate whether fecal contamination at Imperial Beach near the U.S.-Mexico border can be linked to primary-treated effluent being released into ... More

Field sampling completed for Bight ’18 Sediment Quality element

Participants of the Southern California Bight 2018 Regional Monitoring Program’s Sediment Quality element have finished collecting seafloor sediment samples from about 400 sites across the Southern California Bight. The field ... More

Bight ’18 HABs element developing method to track impacts of cyanotoxins in coastal waters

The Harmful Algal Blooms element of the Southern California Bight 2018 Regional Monitoring Program has begun working to develop an assessment method for tracking the ecological impacts of freshwater cyanotoxins ... More

Bight ’18 Microbiology element initiates lab training for coliphage-based water-quality monitoring method

Participants of the Southern California Bight 2018 Regional Monitoring Program’s Microbiology element have begun laboratory training for a study that will evaluate the relevance and reliability of using coliphage viruses ... More

Effort launched to develop prototype causal assessment screening tool

SCCWRP and its partners in October began developing a management tool for rapidly narrowing down potential causes of degraded ecological condition in California streams and coastal waters, part of an ... More

Coastal vulnerability to storm surge being documented at 10 sites

SCCWRP and its project partners have begun using camera stations and water-level loggers set up at 10 Southern California sites to collect data on how El Nino storm surges this ... More

Workgroup for San Diego flow ecology study begins meeting

SCCWRP in November facilitated the inaugural meeting of a San Diego-area workgroup that will be working to ascertain the minimum flow requirements necessary to sustain the ecological health of streams ... More

SMC conducting trash surveys in watersheds to support Bight ’18

The Southern California Stormwater Monitoring Coalition (SMC) has launched trash sampling surveys in wadeable streams across coastal Southern California to support the Southern California Bight 2018 Regional Monitoring Program’s efforts ... More

Bight ’18 field sampling underway to assess sediment quality

The sampling window for the Southern California Bight 2018 Regional Monitoring Program opened July 1, with participants starting to collect seafloor sediments to evaluate the chemical, toxicological and biological health ... More

Sampling underway for study examining uniqueness of microbial community inside sewer vs. storm drain

SCCWRP and its partners have begun collecting samples from San Diego-area sanitary sewer and storm drain systems for a study investigating whether a unique microbial community is found inside each ... More

First large-scale CEC screening study targeting marine environment incorporated into Bight ’18

Bioanalytical cell screening assays and non-targeted chemical analysis are being used for the first time to screen for CECs across the Southern California Bight as part of an expanded Bight ... More

Discussions underway on how to implement proposed recycled water policy

Water recycling agencies and State Water Board staff have begun discussing how to implement a proposed statewide policy that would require recycled water to be monitored using bioanalytical cell screening ... More

Round 1 field sampling completed for study probing origins of sediment contaminants that bioaccumulate in fish

SCCWRP and its partners have completed the first round of field sampling for a two-year study investigating whether legacy contaminants found in the tissue of San Diego Bay fish are ... More

Preliminary modeling tool unveiled to predict sea level rise’s impacts on wetlands

SCCWRP and its partners have developed a preliminary computer modeling tool that enables coastal resources managers to predict how low-lying wetlands in Upper Newport Bay and the Tijuana River Estuary ... More

Study finds oxidative stress in pteropods could serve as early-warning indicator of climate change’s biological impacts

SCCWRP and its partners have completed a two-year study showing that pteropods, or sea snails, experience cellular and physiological stress as a result of multiple stressors exposure related to climate ... More

Study evaluating potential of kelp forests to offset impacts of coastal ocean acidification

West Coast researchers have completed the first year of field work for a three-year study examining whether planted kelp forests in Washington’s Puget Sound could help protect vulnerable shell-forming organisms ... More

Effort launched to develop acidification thresholds for echinoderms

SCCWRP and its partners have launched an effort to develop expert consensus on biologically relevant thresholds at which sea stars, urchins and other echinoderms can be expected to experience adverse ... More

Signs of shell dissolution detected in Dungeness crab larvae

Researchers have detected signs of dissolution in the carapace, or external shell, of Dungeness crab larvae in response to ocean acidification in the natural environment, the first such documentation that ... More

Member agencies provide feedback to improve West Coast acidification model’s accuracy

SCCWRP’s member agencies provided feedback in June to a team of West Coast ocean modelers on how to assess uncertainty in a computer model that predicts how the region’s coastal ... More

Environmental flow targets developed to protect Santa Clara River Estuary

A scientific review panel that includes participation by SCCWRP has completed an analysis of the environmental flow needs of the Santa Clara River Estuary. The flow target analysis, completed in ... More

Stream geomorphology data being collected to aid watershed managers in setting flow targets

SCCWRP and its partners have begun field sampling at coastal stream sites across California to collect data on geomorphic structure, part of an ongoing effort to develop a standardized framework ... More

Study shows flow classification tool can be adapted to distinguish intermittent and ephemeral streams in Southwest

SCCWRP and its partners have shown in a proof-of-concept study that a flow classification tool that can rapidly distinguish intermittent streams from ephemeral streams in the Pacific Northwest is feasible ... More

Study exploring how to dramatically streamline stream causal assessments

SCCWRP and its partners have begun test-driving a novel approach to assessing stream health that has the potential to shave a year or more off the time required to determine ... More

Study sheds light on how to improve DNA sequencing analysis methods to ID organisms

SCCWRP and its partners have completed a two-year study shedding light on best-practices approaches for analyzing raw DNA sequencing data to identify the organisms present in an environmental sample, the ... More

Framework approved to assess sediment’s impacts on humans

The State Water Board has approved a standardized sediment assessment framework intended to better protect the health of humans who consume seafood caught in California’s enclosed bays and estuaries, the ... More

Stream food webs to be examined in study to better integrate stream assessment tools

SCCWRP and its partners have launched a three-year effort to better integrate stream condition assessment tools in California by examining how ecological stress alters the complexity and interconnectedness of stream ... More

Study launched to develop standardized approaches for tracking trash in watersheds

SCCWRP and its partners have kicked off a three-year study to develop standardized statewide approaches for tracking the levels and types of trash found in watersheds. Researchers’ goal is to ... More

Management impacts of stream biointegrity policies explored in new SMC report

The Southern California Stormwater Monitoring Coalition (SMC) has released a comprehensive new report chronicling how the region’s stream management community will potentially be impacted by new and proposed changes to ... More

Effort launched to better characterize linkage between bioassays and biological impacts in fish

SCCWRP and its partners are launching a new round of exploratory work on bioanalytical cell screening technology to better understand how these assays can be adapted to provide early evidence ... More

Bight ’18 keeps focus on key issues of management concern

More than 80 environmental agencies will examine new and emerging developments in water-quality science and management during the 2018 cycle of the Southern California Bight Regional Monitoring Program, which initiates ... More

New study probes origins of legacy sediment contaminants that bioaccumulate in fish

SCCWRP and its partners have launched a two-year study to investigate whether legacy contaminants that occur in the tissue of fish in San Diego Bay are coming exclusively from contaminated ... More

CEC panel informs proposed update to recycled water policy

The State Water Board will consider updating California’s policy on monitoring contaminants of emerging concern (CECs) in recycled water as early as this year based on the findings of an ... More

Resolution of West Coast acidification model being increased to improve accuracy

West Coast researchers working to develop a computer model that predicts how the region’s coastal waters will be affected by ocean acidification and hypoxia (OAH) have decided to increase the ... More

Researchers assessing biological impacts of ocean acidification in the Salish Sea

SCCWRP and its partners have launched an effort to assess the vulnerability of marine calcifying communities in the Pacific Northwest’s Salish Sea to ocean acidification, including whether land-based pollution sources ... More

Set of models built for establishing nutrient loading targets for Santa Margarita River

SCCWRP and its partners have finished assembling an integrated toolkit of mechanistic computer models and empirical statistical models that water-quality managers can use to optimally protect biological integrity and human ... More

Study to explore optimal methods for monitoring cyanotoxins

SCCWRP and its partners will seek to develop more robust field methods for monitoring cyanotoxins in aquatic environments during a new study kicking off this summer in the Los Angeles ... More

Science tools for proposed biointegrity-biostimulatory policy to be released this summer

SCCWRP and its partners will begin soliciting public comments this summer on a series of new scientific tools and synthesis reports that will form the technical backbone for a proposed ... More

EPA Pacific Northwest stream tool being tested in Southwest

SCCWRP and its partners have launched a study to investigate whether a stream management tool that can rapidly distinguish intermittent streams from ephemeral streams in the Pacific Northwest is feasible ... More

Algae-based stream scoring tool to be finalized this fall

An assessment tool that will score the ecological health of California wadeable streams by analyzing algal communities is scheduled to be finalized and published as early as this fall. The ... More

New interactive mapping app helps visualize chances of improving stream condition

SCCWRP and its partners have developed a web-based interactive mapping program to help stream managers visualize where in the San Gabriel River watershed they are more vs. less likely to ... More

Causal assessment tools being tested in pair of case studies

SCCWRP and its partners have initiated a pair of case studies to demonstrate a set of new causal assessment tools designed to rapidly narrow potential causes of degraded ecological condition ... More

Effort launched to adapt ephemeral stream bioassessment tools for oil spill monitoring

SCCWRP and its partners have kicked off a study examining whether bioassessment tools being developed to assess the health of ephemeral streams also can be used to assess ecological damage ... More

Researchers using Bight data to evaluate accuracy of ocean acidification model

Researchers working to develop a West Coast computer model that predicts how land-based sources of nutrients influence ocean acidification in nearshore coastal waters have begun using field data collected from ... More

Expert panel updates recommendations for monitoring CECs in recycled water

An expert advisory panel convened by SCCWRP on behalf of the State Water Board to update recommendations for monitoring CECs in recycled water has released its final draft report. The ... More

Study offers guidance for optimizing TIE study design

SCCWRP and its partners have completed a two-year study examining how to optimize the design of toxicity identification evaluation (TIE) studies to improve confidence in the results. The project, published ... More

Model being developed to predict acidification’s impacts on Dungeness crab

A group of researchers, including SCCWRP, has launched a three-year project to develop a model that predicts impacts on the Pacific Northwest Dungeness crab industry from ocean acidification. The project, ... More

Pteropod health to be evaluated to track ocean acidification

SCCWRP has teamed up with Canada’s Department of Fisheries and Oceans to examine whether pteropods in the Beaufort Sea are showing signs of shell dissolution triggered by ocean acidification. The ... More

Study launched to optimize kelp yields, explore approach to combatting ocean acidification

A group of researchers, including SCCWRP, has launched a study to identify areas in the San Pedro Basin that are ideal for cultivating kelp, as well as the environmental conditions ... More

Microbes in sewer pipes to be studied to glean insights about origins of fecal contamination

SCCWRP and its partners have launched a study investigating whether the microbial community that grows inside sanitary sewer pipes could provide insights into the origins of human fecal contamination found ... More

Study launched to revisit copper TMDL for Marina del Rey Harbor

SCCWRP has launched a two-year study examining whether existing regulatory targets for dissolved copper in Marina del Rey Harbor should be modified to more accurately reflect the ecological threat posed ... More

Technical foundation created for ephemeral stream tools

SCCWRP and its partners have completed a pair of studies that establish a technical foundation for building watershed management tools for Southern California streams that run dry for much of ... More

Models being built to establish nutrient loading targets for Santa Margarita River

SCCWRP and its partners have begun assembling a suite of models to support development of scientifically defensible nutrient loading targets for reducing eutrophication in the lower Santa Margarita River watershed. ... More

20 years of nutrient input data compiled for acidification model

SCCWRP and its partners have compiled a series of data sets reflecting the contributions of major sources of nutrients to the Southern California Bight over the past 20 years, part ... More

Environmental flows workgroup organizes under California Water Quality Monitoring Council

A group of technical experts working to coordinate environmental flow management programs statewide was officially recognized in November as a workgroup of the California Water Quality Monitoring Council. The recognition ... More

DNA sequencing used to identify larval fish

SCCWRP and its partners have completed a proof-of-concept study showing that DNA sequencing methods can be used to identify communities of ichthyoplankton, or the eggs and larvae of fish, collected ... More

Stream assessment tool under development to score physical habitat condition

SCCWRP and its partners have developed a preliminary version of a stream assessment tool that can quantitatively score the condition of physical habitat using field data collected during routine monitoring ... More

UAS to be used to develop protocols for quantifying trash in waterways

SCCWRP and its partners have kicked off a three-year project to develop standardized methods for quantifying trash in California waterways, including using imagery collected from unmanned aerial systems (UAS) to ... More

SMC open-data portal under development to streamline data management

The Southern California Stormwater Monitoring Coalition (SMC) has begun developing a comprehensive data management system intended to streamline data submission, quality-control checks and data analysis. Built on the Esri ArcGIS ... More

Bight ’18 kicks off with five study elements

Participants of the Southern California Bight Regional Monitoring Program have developed five main study elements for the program’s 2018 cycle that will explore different facets of how human activities have ... More

Laboratory-based passive-sampling method used to measure sediment contamination

SCCWRP and its partners have successfully used prototype passive-sampling methods in a laboratory to measure the freely dissolved concentrations of organic contaminants in sediment. Unlike previous applications of passive-sampling technology ... More

Initial testing completed for using bioanalytical assays to screen for CECs

SCCWRP and its partners have shown in a pair of initial studies that bioanalytical screening tools have the potential to be used to screen receiving waters across California for CECs. ... More

International expert panel convened to develop acidification thresholds for pteropods

A 10-member panel made up of leading global experts on pteropods, or sea snails, convened at SCCWRP in September to develop consensus around biologically relevant thresholds at which these ubiquitous ... More

Draft framework unveiled for assessing human health impacts of contaminated sediment

SCCWRP and its partners have completed development of a standardized sediment assessment framework intended to better protect the health of humans who consume seafood caught in enclosed bays and estuaries ... More

Bight ’18 kickoff brings together dozens of agencies

A collaboration involving dozens of environmental organizations will examine how human activities have affected the ecological health of Southern California’s coastal waters during the sixth cycle of the Southern California ... More

Study launched to document fate of algal toxin in sediment

SCCWRP and its partners have initiated a study examining whether an algal toxin known as domoic acid can linger in seafloor sediment following a harmful algal bloom (HAB) event. The ... More

Effort launched to adapt UAS to monitor HABs in lakes

SCCWRP and its partners have launched an effort to adapt commercially available unmanned aerial systems (UAS) for routine monitoring of lakes susceptible to ecologically disruptive cyanobacteria blooms. UAS technology – ... More

Bioretention soil media being tested to compare effectiveness at treating stormwater

SCCWRP and its partners in October launched a year-long project to test the performance of six types of bioretention soil media designed to remove pathogens, indicator bacteria, nutrients, metals and ... More

Passive samplers retrieved from Channel Islands for international oceanic pollutants study

SCCWRP and its partners in August successfully retrieved two sets of passive sampling arrays that were deployed over a two-month period near the Channel Islands to help establish baseline concentrations ... More

Fish exposed to flowing river water to monitor for biological changes

SCCWRP and its partners exposed fish to flowing Los Angeles River water for two weeks in September as part of a pilot study examining potential biological impacts from exposure to ... More

Ocean acidification model development moves into second validation phase

West Coast researchers working to develop a computer model that predicts how the region’s coastal waters will be affected by ocean acidification and hypoxia have advanced to a second phase ... More

Field data collection completed for Santa Margarita River nutrient management study

SCCWRP and its partners have completed field data collection for a three-year project seeking to establish scientifically defensible nutrient loading targets for reducing eutrophication and improving biological integrity in the ... More

Utah officials trained on HABs monitoring techniques at SCCWRP

SCCWRP in August trained representatives from the Utah Department of Agriculture and Food on techniques for monitoring harmful algal blooms (HABs) in irrigation systems in Utah, part of an effort ... More

Microbial contamination detection device to undergo more R&D after malfunction

A field-portable instrument prototype designed to improve the speed at which beach water can be analyzed for microbial contamination did not perform reliably during an initial field test and will ... More

Preliminary testing completed for L.A. River fish flow-through study

SCCWRP and its partners have completed preliminary testing for a field study that involves exposing fish to flowing river water in real time to study potential biological impacts from exposure ... More

First phase of sediment TIE optimization study wraps up

SCCWRP has completed the first phase of a two-year project exploring how to optimize the design of toxicity identification evaluation (TIE) studies to improve confidence in the results. The project, ... More

Novel sediment management strategies to be explored for protecting coastal wetlands

SCCWRP and its partners have launched a four-year study exploring how innovative sediment management strategies could be used to prepare low-lying coastal areas for the impacts of sea level rise ... More

Effort launched to develop biologically relevant thresholds for tracking ocean acidification

SCCWRP and its partners have launched a two-year initiative to develop a scientific foundation for using the health of marine organisms to track the biological impacts of ocean acidification (OA). ... More

Accuracy of QMRA health risk modeling approach validated with epidemiology data

SCCWRP and its partners have shown that a health risk modeling approach known as Quantitative Microbial Risk Assessment (QMRA) can be used to accurately estimate illness rates for beachgoers who ... More

Field testing underway to explore monitoring applications for recently acquired UAS

SCCWRP and its partners have initiated a series of field experiments examining how a pair of recently acquired unmanned aerial systems (UAS) could be used to improve the speed and ... More

POTWs embark on study documenting antibiotic-resistant bacteria, genes in effluent

SCCWRP and its four wastewater treatment member agencies have initiated a year-long study examining whether viable antibiotic-resistant bacteria – and the genes that code for antibiotic resistance – are being ... More

Bioassays show promise for CEC screening in SMC study

SCCWRP and its partners have demonstrated in a proof-of-concept study that commercially available bioanalytical tools have the potential to cost-effectively screen Southern California waterways for the presence of bioactive contaminants ... More

New Bight ’18 tools to improve data management workflows

SCCWRP has developed a series of new tools and automations for the 2018 cycle of the Southern California Bight Regional Monitoring Program designed to streamline and enhance data management. Known ... More

Effort underway to clean up, standardize historical Bight monitoring data

SCCWRP and its member agencies have initiated a project to clean up and standardize decades of data they’ve collected from across the Southern California Bight during routine environmental monitoring. The ... More

CEC advisory panel reconvened to update recommendations for recycled water monitoring

SCCWRP has reconvened an expert advisory panel at the behest of the State Water Board to develop an updated set of recommendations for monitoring CECs in recycled water. During a ... More

Project laying groundwork to develop flow-ecology assessment tools

SCCWRP and its partners have begun laying the groundwork to develop a suite of assessment tools that illuminate how the ecological health of Southern California streams is impacted by alterations ... More

Condition bioindicators to be developed for ephemeral streams

SCCWRP and its partners are launching a three-year project to develop bioindicators for ephemeral streams in California and Arizona, following the successful completion of a proof-of-concept study showing that these ... More

Initial development work completed for algae-based stream scoring tool

SCCWRP and its partners have completed initial development work on an assessment tool that will score the ecological health of California wadeable streams by analyzing the condition of in-stream algal ... More

POTW labs to start training for study examining antibiotic-resistant bacteria, genes in effluent

SCCWRP and its POTW member agencies in May will begin practicing collection and analysis techniques for a year-long study examining whether viable antibiotic-resistant bacteria – and the genetic material that ... More

Passive sampling method for measuring sediment contaminants validated in laboratory

SCCWRP and its partners have completed the validation phase of a two-year study that aims to adapt commercially available passive sampling devices to measure the freely dissolved concentration of CECs ... More

International passive sampling study to examine persistent organic pollutants in Channel Islands

SCCWRP in June will deploy a series of passive sampling arrays in the Channel Islands National Marine Sanctuary to measure persistent organic pollutants (POPs), part of an international effort to ... More

Human health assessment framework for embayment sediment quality being finalized

SCCWRP and its partners are wrapping up a final round of updates to a draft statewide assessment framework that evaluates how contaminated sediment affects the health of humans who consume ... More

Marina del Rey Harbor study highlights need for improved tools to investigate cause of sediment toxicity

SCCWRP and its partners have completed a comprehensive investigation into the potential causes of degraded sediment quality in Marina del Rey Harbor, a study that has underscored the need for ... More

San Diego Bay study examines fish consumption habits among local anglers

SCCWRP and its partners have completed a comprehensive, two-year study illuminating the fish consumption habits of San Diego Bay anglers who catch fish that could potentially be contaminated. The San ... More

International passive sampling study to examine persistent organic pollutants in Channel Islands

SCCWRP in June will deploy a series of passive sampling arrays in the Channel Islands National Marine Sanctuary to measure persistent organic pollutants (POPs), part of an international effort to ... More

Marina del Rey Harbor study highlights need for improved tools to investigate cause of sediment toxicity

SCCWRP and its partners have completed a comprehensive investigation into the potential causes of degraded sediment quality in Marina del Rey Harbor, a study that has underscored the need for ... More

San Diego Bay study examines fish consumption habits among local anglers

SCCWRP and its partners have completed a comprehensive, two-year study illuminating the fish consumption habits of San Diego Bay anglers who catch fish that could potentially be contaminated. The San ... More

Model evaluates vulnerability of 104 wetlands to sea level rise

SCCWRP and its partners have developed a vulnerability index model that predicts how Southern California coastal wetlands of all types and sizes could be impacted by sea level rise over ... More

Special journal issue chronicles how Bight ecosystems influenced by diversion of wastewater effluent

SCCWRP and its partners have developed a vulnerability index model that predicts how low-lying coastal wetlands across Southern California, including Los Peñasquitos Lagoon in San Diego, above, will be impacted ... More

SCCWRP begins documenting persistence of eDNA in stream environments

SCCWRP has completed a pilot study examining how long the environmental DNA signal of an organism lingers in a stream following the removal of the source organism, part of an ... More

SCCWRP exploring expanded use of extrapolation modeling technique for stream condition assessments

SCCWRP and its partners are exploring how to expand use of a modeling technique for extrapolating bioassessment results to unmonitored stream reaches, following the completion of a pilot study that ... More

SCCWRP begins documenting persistence of eDNA in stream environments

SCCWRP has completed a pilot study examining how long the environmental DNA signal of an organism lingers in a stream following the removal of the source organism, part of an ... More

Researchers using Bight data to evaluating accuracy of ocean acidification model

Researchers working to develop a West Coast computer model that predicts how land-based sources of nutrients influence ocean acidification in nearshore coastal waters have begun using field data collected from ... More

SMC kicks off Year 3 field sampling for second cycle of stream monitoring program

The Southern California Stormwater Monitoring Coalition in March kicked off Year 3 of field sampling for the second five-year cycle of its regional stream monitoring program. The SMC Regional Watershed ... More

Bight ’13 CIA element publishes integrated summary reports

The integrated findings of the Contaminant Impact Assessment (CIA) element of Bight ’13 have been published in a final assessment report and an accompanying, 12-page executive summary intended for a ... More

POTW labs to start training for study examining antibiotic-resistant bacteria, genes in effluent

SCCWRP and its POTW member agencies in May will begin practicing collection and analysis techniques for a year-long study examining whether viable antibiotic-resistant bacteria – and the genetic material that ... More

Human fecal contamination sources identified at Inner Cabrillo Beach during QMRA study

A SCCWRP-led effort to use a health risk modeling approach known as Quantitative Microbial Risk Assessment (QMRA) at Inner Cabrillo Beach in Los Angeles County has turned up evidence that ... More

Human health assessment framework for embayment sediment quality being finalized

SCCWRP and its partners are wrapping up a final round of updates to a draft statewide assessment framework that evaluates how contaminated sediment affects the health of humans who consume ... More

SCCWRP-developed CEC monitoring framework highlighted at State Water Board meeting

State Water Board members explored multiple approaches being taken to improve CEC monitoring statewide during an informational meeting agenda item in February. Some of the presentations they heard at the ... More

EPA workshop focuses on science-informed solutions for managing HABs

About 150 water-quality managers from across the nation discussed the state of knowledge about harmful algal blooms (HABs) and best-practices solutions and strategies for combatting them during a management-focused workshop ... More

SCCWRP research featured at S.D. Regional Board workshop on monitoring technologies

Next-generation environmental monitoring technologies being developed by SCCWRP and its research partners were featured at an April workshop hosted by the San Diego Regional Water Quality Control Board that focused ... More

New stream flow targets aid in watershed planning decisions

SCCWRP and its partners have published a comprehensive study outlining how to use a suite of newly developed flow-ecology modeling tools to optimally protect the in-stream biological communities of more ... More

SMC kicks off Year 3 field sampling for second cycle of stream monitoring program

The Southern California Stormwater Monitoring Coalition in March kicked off Year 3 of field sampling for the second five-year cycle of its regional stream monitoring program. The SMC Regional Watershed ... More

Bight ’13 CIA element publishes integrated summary reports

The integrated findings of the Contaminant Impact Assessment (CIA) element of Bight ’13 have been published in a final assessment report and an accompanying, 12-page executive summary intended for a ... More

Pilot study shows potential of UAS for remote environmental monitoring applications

SCCWRP and its partners have demonstrated in a pilot study that traditional and multispectral cameras mounted to an unmanned aerial system (UAS) can be used to produce high-resolution, 3D mapping ... More

ELAP one-year follow-up review finds accrediting body back on track

An expert advisory panel convened by SCCWRP in 2015 to evaluate the state’s accrediting body for environmental laboratories has completed a one-year follow-up review of the program, concluding that it ... More

Analysis underway for Inner Cabrillo Beach health risk modeling study

A SCCWRP-facilitated advisory committee is reviewing water-quality sampling data collected from Inner Cabrillo Beach to determine whether high fecal indicator levels at the Los Angeles County beach are indicative of ... More

Study design being finalized to examine antibiotic-resistant bacteria, genes in effluent

SCCWRP and its POTW member agencies are finalizing the design of a study that will examine whether viable antibiotic-resistant bacteria and the genetic material that codes for antibiotic resistance are ... More

Suitcase-sized microbial detection device to begin field-testing in spring

SCCWRP this spring will begin field-testing a suitcase-sized prototype instrument that could revolutionize the speed at which beach ocean water is analyzed for microbial contamination. The droplet digital PCR (polymerase ... More

Macroalgal work being used to draft updated nutrient TMDL for Santa Margarita River Estuary

A SCCWRP-led investigation into how to set scientifically defensible macroalgal biomass and nutrient loading targets in the Santa Margarita River Estuary is serving as the basis of a proposed alternative ... More

Demonstration maps reveal extrapolation limits of stream condition scores

SCCWRP has generated a series of maps that reveal the geographical extent to which ecological condition scores calculated for stream sampling sites may be extrapolated to unsampled reaches upstream and ... More

Sediment samples being analyzed to test CEC monitoring framework

SCCWRP and the Sanitation Districts of Los Angeles County have begun analyzing sediment samples collected from across two regions of California for a pilot study that will test-drive a new, ... More

Promising passive sampling device developed to detect fipronil in receiving waters

SCCWRP and its partners have identified a promising, cost-effective passive sampling method for detecting the ubiquitous pesticide fipronil in receiving waters. The passive sampling method for this problematic, high-priority CEC ... More

Field sampling kicks off for linking freshwater HABs to marine impacts

SCCWRP and its partners have launched the field sampling for a study that will examine how freshwater toxins influence downstream waterbodies along the California coast. The goal is to understand ... More

First phase wraps up for West Coast acidification model development

West Coast researchers working to develop a computer model that predicts how the region’s coastal waters will be affected by ocean acidification and hypoxia have successfully completed the first phase ... More

SMC completes analysis of bioassessment scores for engineered channels

The Southern California Stormwater Monitoring Coalition has completed a comprehensive analysis of the range of ecological condition scores obtained when engineered channels across coastal Southern California are scored using existing ... More

Flow-through units being deployed along L.A. River to study CECs’ impacts on fish

SCCWRP and its partners will expose fish to flowing Los Angeles River water in real time this spring as part of an on-site study examining potential biological impacts to fish ... More

Experts create gradient for interpreting stream scores

A 16-member expert panel convened to interpret bioassessment scores for wadeable streams statewide has reached consensus on how the scores correspond to various ranges of ecological condition. The Biological Condition ... More

Analysis underway for Inner Cabrillo Beach health risk modeling study

A SCCWRP-facilitated advisory committee is reviewing water-quality sampling data collected from Inner Cabrillo Beach to determine whether high fecal indicator levels at the Los Angeles County beach are indicative of ... More

Study design being finalized to examine antibiotic-resistant bacteria, genes in effluent

SCCWRP and its POTW member agencies are finalizing the design of a study that will examine whether viable antibiotic-resistant bacteria and the genetic material that codes for antibiotic resistance are ... More

Promising passive sampling device developed to detect fipronil in receiving waters

SCCWRP and its partners have identified a promising, cost-effective passive sampling method for detecting the ubiquitous pesticide fipronil in receiving waters. The passive sampling method for this problematic, high-priority CEC ... More

Field sampling kicks off for linking freshwater HABs to marine impacts

SCCWRP and its partners have launched the field sampling for a study that will examine how freshwater toxins influence downstream waterbodies along the California coast. The goal is to understand ... More

Marina del Rey stressor identification rules out possible causes of degraded sediment quality

SCCWRP and its partners have ruled out some potential causes of degraded sediment quality in Marina del Rey Harbor, part of an ongoing stressor identification study aimed at understanding why ... More

Year 1 field sampling wraps up for developing intermittent stream bioindicators

SCCWRP and its partners have completed Year 1 of field sampling for a study investigating the feasibility of using terrestrial arthropods, riparian insects and bryophytes (e.g., mosses) to assess the ... More

Workshop highlights need for improved science to manage ‘climate-ready’ bar-built estuaries

SCCWRP in September helped kick-start a wide-ranging discussion with California water-quality and natural resource managers about how to more effectively manage a common type of coastal estuary known as a ... More

Virtual-reality simulation to enable exploration of changing environmental conditions in Tijuana estuary

SCCWRP has teamed up with the geospatial software firm Esri to create a computer game-like re-creation of the Tijuana River estuary that will enable users to travel through the habitat ... More

Prototype image processing system could provide early warnings for HAB events

SCCWRP has partnered with Ohio’s NASA Glenn Research Center and Wright State University to build a prototype computer system that can autonomously analyze aerial photos of water bodies susceptible to ... More

Summer sampling completed to support health risk modeling study

SCCWRP and its partners have completed an initial round of sampling at Inner Cabrillo Beach for a study that aims to ascertain whether high fecal indicator levels at the Los ... More

Study to investigate whether antibiotic resistance bacteria, genes being discharged in wastewater effluent

SCCWRP is collaborating with its member agencies to design a study examining whether viable antibiotic-resistant bacteria and the genetic material that codes for antibiotic resistance are being discharged into the ... More

Analysis of ocean acidification conditions across Bight wraps up

SCCWRP and its partners have completed a synoptic analysis of ocean acidification conditions across the Southern California Bight continental shelf, the first phase of a multi-part Bight ’13 study documenting ... More

SCCWRP assembles expert panel to help set eutrophication indicator ranges for California streams

SCCWRP has assembled a 16-member panel of experts to place stream sites across California into different classes based on the ecological health of their algae and bottom-dwelling macroinvertebrate communities, a ... More

Year 2 sampling of toxic algae wraps up for 2 recreational lakes

SCCWRP and its partners have finished the second year of sampling in two Riverside County lakes for a study chronicling the proliferation of toxic algae through the bloom season. During ... More

Scientists, managers lay foundation for developing acidification criteria at workshop

Scientists and coastal managers from across the West Coast began laying the groundwork for the development of ecologically relevant criteria for coastal ocean acidification during a two-day workshop in October ... More

Bioaccumulation study informs health risks from sediment

SCCWRP and its partners have completed a comprehensive investigation into how sediment contamination is transferred through Southern California marine food webs, a study that has enabled scientists to close key ... More

Prototype image processing system could provide early warnings for HAB events

SCCWRP has partnered with Ohio’s NASA Glenn Research Center and Wright State University to build a prototype computer system that can autonomously analyze aerial photos of water bodies susceptible to ... More

Summer sampling completed to support health risk modeling study

SCCWRP and its partners have completed an initial round of sampling at Inner Cabrillo Beach for a study that aims to ascertain whether high fecal indicator levels at the Los ... More

Virtual-reality simulation to enable exploration of changing environmental conditions in Tijuana estuary

SCCWRP has teamed up with the geospatial software firm Esri to create a computer game-like re-creation of the Tijuana River estuary that will enable users to travel through the habitat ... More

Sampling completed for L.A.-area evaluation of bioassay effectiveness for CEC screening

SCCWRP and its partners have completed sampling of river water in the Los Angeles region for a study assessing the effectiveness of cell-based bioassays to screen for CECs. Water samples ... More

Sediment toxicity database expanded to improve availability of high-quality data

SCCWRP, in association with the Society of Environmental Toxicology and Chemistry (SETAC), has completed a major expansion of a publicly accessible database designed to improve environmental managers’ access to high-quality ... More

Study to investigate whether antibiotic resistance bacteria, genes being discharged in wastewater effluent

SCCWRP is collaborating with its member agencies to design a study examining whether viable antibiotic-resistant bacteria and the genetic material that codes for antibiotic resistance are being discharged into the ... More

Marina del Rey stressor identification rules out possible causes of degraded sediment quality

SCCWRP and its partners have ruled out some potential causes of degraded sediment quality in Marina del Rey Harbor, part of an ongoing stressor identification study aimed at understanding why ... More

Analysis of ocean acidification conditions across Bight wraps up

SCCWRP and its partners have completed a synoptic analysis of ocean acidification conditions across the Southern California Bight continental shelf, the first phase of a multi-part Bight ’13 study documenting ... More

SCCWRP assembles expert panel to help set eutrophication indicator ranges for California streams

SCCWRP has assembled a 16-member panel of experts to place stream sites across California into different classes based on the ecological health of their algae and bottom-dwelling macroinvertebrate communities, a ... More

Study shows watershed managers how to apply new flow-ecology modeling tools

SCCWRP and its partners in the San Diego River Watershed have completed a demonstration study showing how to use a newly developed suite of flow-ecology modeling tools to optimally manage ... More

Year 1 field sampling wraps up for developing intermittent stream bioindicators

SCCWRP and its partners have completed Year 1 of field sampling for a study investigating the feasibility of using terrestrial arthropods, riparian insects and bryophytes (e.g., mosses) to assess the ... More

Expert panel weighs in on extrapolation limits of stream condition scores

SCCWRP and the California Department of Fish and Wildlife convened an expert panel in September to review how far stream condition scores calculated for a given stream sampling site can ... More

Sampling completed for ichthyoplankton project

SCCWRP and two of its member agencies completed field sampling in June for a project that will evaluate DNA-based methods for identifying ichthyoplankton, which are the eggs and larvae of ... More

Arthropods, bryophytes being developed as condition bioindicators for intermittent streams

SCCWRP and California State University, Monterey Bay, in June launched a study to investigate the feasibility of using terrestrial arthropods and bryophytes (e.g., mosses) to assess the biological condition of ... More

Study: Cell bioassays could be effective at screening for potential harm in fish

SCCWRP and its partners at the University of Florida have demonstrated in a proof-of-concept study that biological assays built with engineered human cells have the potential to be effective at ... More

Method comparison study seeks to assess utility of using DNA to identify stream algae

SCCWRP and its partners have launched a first-of-its-kind study to determine whether DNA-based methods can reliably be used to identify algae in wadeable streams across California, a finding that could ... More

Surfer rainfall study helps focus water-quality discussion

SCCWRP and its partners have completed a three-year epidemiological study examining the health impacts of entering coastal waters during and shortly after rainfall, a study that has raised important public ... More

Santa Margarita River study offers insights on reducing nutrient loading to estuaries

SCCWRP and its partners have completed the first phase of a five-year study exploring how water-quality managers can set appropriate, scientifically defensible targets for reducing nutrient loading in the Santa ... More

Study to investigate extrapolation limits of stream condition scores

SCCWRP and the California Department of Fish and Wildlife in August will launch a study seeking to clarify how far stream condition scores calculated for a single stream site can ... More

SMC kicks off second-year sampling with new program elements

The Southern California Stormwater Monitoring Coalition kicked off second-year sampling in March for the second cycle of its Regional Watershed Monitoring Program. New program elements being incorporated into the second ... More

Framework developed for establishing Southern California stream flow thresholds

SCCWRP and its partners have completed development of a framework that can be used to establish ecologically relevant flow targets for stream sites across Southern California. The framework, which relates ... More

SCCWRP-facilitated design charrette helps create priorities for estuary restoration

SCCWRP has submitted to the California State Coastal Conservancy a report outlining how the design charrette process can be used to develop restoration goals and priorities for small coastal estuaries ... More

SCCWRP to launch field testing of suitcase-sized microbial detection device this summer

SCCWRP this summer will begin field-testing a suitcase-sized instrument prototype designed to rapidly detect microbial contamination in beach ocean water. The droplet digital PCR (polymerase chain reaction) instrument, developed by ... More

SMC samples advance to nontargeted analysis phase of CEC monitoring framework

SCCWRP and its collaborators have advanced some of the 31 water samples collected by the Southern California Stormwater Monitoring Coalition (SMC) to the nontargeted phase of chemical analysis, a recognition ... More

Field sampling wraps up for OAH study examining influence of wastewater nutrients in coastal waters

SCCWRP and its member agencies have finished collecting two years of field sampling data for a study that will assess the relative influence of anthropogenic vs. natural sources of nutrient ... More

SCCWRP completes data collection for fish consumption study

SCCWRP has completed a year-long effort to interview more than 1,600 San Diego Bay anglers about their fish consumption habits for a study that will ascertain whether local anglers and ... More

San Diego Bay bioaccumulation study nearing completion

A three-year study that quantifies how sediment contamination in San Diego Bay is transferred through various levels of the marine food web has completed its first phase of data analysis ... More

SCCWRP unveils algaeMetrics tool to simplify algae-based bioassessment calculations

SCCWRP has created a free online tool to help Southern California stream managers and scientists automatically generate stream bioassessment scores using raw algae data collected from wadeable streams. The algaeMetrics ... More

Bight ’13 regional monitoring wrapping up major elements

Three of the five elements of the Southern California Bight 2013 Regional Monitoring Program are winding down as a series of final assessment reports is published over the next few weeks. ... More

Human fecal contamination sources identified at Inner Cabrillo Beach during QMRA study

A SCCWRP-led effort to use a health risk modeling approach known as Quantitative Microbial Risk Assessment (QMRA) at Inner Cabrillo Beach in Los Angeles County has turned up evidence that ... More

SCCWRP to test new EPA health risk model at Inner Cabrillo Beach

SCCWRP in May will launch a first-of-its-kind study aimed at ascertaining whether high fecal indicator bacteria Ievels at Inner Cabrillo Beach in the Los Angeles Harbor area are indicative of ... More

First phase wraps up for West Coast acidification model development

West Coast researchers working to develop a computer model that predicts how the region’s coastal waters will be affected by ocean acidification and hypoxia have successfully completed the first phase ... More

SCCWRP to present preliminary results for source tracking study

SCCWRP in February will present the preliminary findings of a microbial source tracking study intended to gauge the relative degradation rates of pathogens, fecal indicator bacteria and source-associated markers in ... More

Water-quality model calibrated for Santa Margarita River estuary

SCCWRP and its partners have completed calibrating a new water-quality model that will be used to study nutrient loading in the Santa Margarita River estuary in northern San Diego County. ... More

SCCWRP, partners seeking comments on framework for assessing nutrient overenrichment in S.F. Bay

SCCWRP and its partners are seeking public comment on a draft of a scientific assessment framework that will be used for assessing the effects of nutrient overenrichment in San Francisco ... More

Likely causes of cyanobacterial blooms, nuisance vegetation in Bay Delta chronicled in new reports

SCCWRP and its partners have completed a comprehensive review of the likely causes of cyanobacterial blooms and nuisance vegetation in the San Francisco Bay Delta, concluding that nutrient loading likely ... More

SCCWRP working to adapt passive sampling technology to monitor CECs in sediment

SCCWRP in January launched a two-year effort to adapt commercially available passive sampling devices to measure the freely dissolved concentration (Cfree) of CECs in sediment. Passive sampling devices consist of ... More

SCCWRP-developed sediment bioaccumulation model being tested in L.A./Long Beach Harbors

SCCWRP and the Harbor Technical Work Group, which is working to address a TMDL (total maximum daily load) in Los Angeles and Long Beach Harbors, launched an effort in November ... More

San Diego Bay bioaccumulation study working to quantify DDTs, PCBs

SCCWRP and its partners in December began analyzing and interpreting data collected from more than 300 San Diego Bay sediment and animal-tissue samples as part of a two-year study that ... More

Draft study plan released for planned Marina del Rey copper bioavailability study

SCCWRP in January released a draft study plan for an upcoming Marina del Rey Harbor study that will seek to measure the influence of harbor water characteristics and environmental variations ... More

Sediment stressor identification study launched in Marina del Rey

SCCWRP in late January kicked off a study that seeks to determine the cause of sediment toxicity and benthic community impairment in Marina del Rey Harbor. The study involves using ... More

SCCWRP hosts kickoff meeting to develop statewide algae assessment program

SCCWRP hosted a day-long kickoff meeting with state, federal and local agencies in January to begin developing a statewide freshwater bioassessment program that uses algae as the indicator of waterbody ... More

SCCWRP works toward predicting causes, impacts of West Coast acidification

SCCWRP and its partners have begun work on a predictive model that will offer managers key insights about the extent to which anthropogenic nutrients introduced to coastal waters affect ocean ... More

Gene expression patterns of fish change in response to pollutant exposure, study shows

SCCWRP has found that the gene expression patterns of the hornyhead turbot change as they are exposed to different chemical pollutants at different concentrations, a proof-of-concept finding that reveals how ... More

SCCWRP transitioning new stream condition scoring tool to managers

SCCWRP and its partners have launched a series of outreach and training exercises to teach watershed managers how to use a new scoring tool for evaluating the biological health of ... More

Expert panel evaluates SCCWRP nutrient science plan

A four-member expert review panel tasked with reviewing a science plan supporting the State Water Board’s effort to develop nutrient objectives for California wadeable streams has concluded that SCCWRP’s approach ... More

XPRIZE-developed pH sensors being tested as Bight profilers

SCCWRP and its four POTW member agencies have kicked off a year-long effort to evaluate whether ocean pH monitoring instruments developed through an international XPRIZE competition can be used effectively ... More

SCCWRP to test suitcase-sized microbial detection device

A suitcase-sized instrument that could revolutionize the speed at which beach ocean water is tested for microbial contamination is being prepared for an initial round of testing and calibration at ... More

SCCWRP models flow patterns at 850 stream sites for ELOHA study

SCCWRP in October finished modeling hydrological flow patterns for about 850 ungaged bioassessment stream sites across Southern California, a milestone in a three-year project that aims to use a scientific ... More

Scientists to track El Niño’s physical impacts to coastal lagoons this winter

To better understand how sea level rise may impact Southern California’s vulnerable coastal lagoons, SCCWRP is launching a study this month to observe how predicted El Niño-fueled storm surges this ... More

Massive 3-year sampling effort for San Diego Bay bioaccumulation study wraps up

Scientists have finished collecting and analyzing more than 260 animal samples from San Diego Bay in one of the most comprehensive Southern California investigations ever conducted into how contamination is transferred ... More

Panel proposes reforms to ELAP following review

A five-member advisory panel convened by SCCWRP to evaluate the state’s Environmental Laboratory Accreditation Program (ELAP) has published a report outlining its Year 1 findings and recommendations, the culmination of ... More

CTAG user groups delve into next-gen tech projects at first meetings

Two new CTAG user groups that will pool together resources and expertise from SCCWRP’s member agencies to tackle next-generation data acquisition and visualization technology projects met for the first time ... More

Standard protocols for estuary assessments published in manual

The Santa Monica Bay Foundation and its partners, including SCCWRP, have completed a draft guidance document that establishes standard protocols for monitoring and assessing coastal lagoons and intertidal estuaries in ... More

Case study for flow-ecology framework kicks off in San Diego

SCCWRP and its partners kicked off a case study in May that aims to demonstrate the utility of using a scientific framework known as the Ecological Limits of Hydrologic Alteration ... More

Bight ’13 toxicity data suggest sediment quality is improving

Sediment toxicity testing conducted as part of the 2013 Southern California Bight Regional Monitoring Program has revealed evidence of continuing improvement to sediment quality, according to the findings of the ... More

SCCWRP applies bioassessment index to streams statewide

A new scoring tool that was developed to assess the biological condition of California’s wadeable streams has been applied for the first time to all wadeable streams statewide, with the ... More

SCCWRP hosts transcontinental stormwater management workshop in India

Leading stormwater scientists from across three continents came together at a SCCWRP-facilitated forum in India in March to discuss more effective ways to capture and use rainfall runoff in drought-prone ... More

Pilot study launched to test SCCWRP’s new CEC monitoring framework statewide

SCCWRP has launched a three-year pilot study to evaluate its newly developed CEC monitoring framework across Southern California watersheds, an effort to understand how to effectively apply the framework to ... More

HAB experts develop statewide strategy for responding to toxic cyanobacterial blooms

A group of scientific experts on harmful algal blooms in California has developed a statewide strategy for responding to HABs and mitigating their impacts in water bodies across California. The ... More

Expert panel urges action on West Coast ocean acidification

Global carbon dioxide emissions are triggering fundamental changes to ocean chemistry along the North American West Coast that should be addressed through immediate and decisive management actions, including development of ... More

SCCWRP testing utility of remote sensing to assess hydromodification risk

SCCWRP has partnered with Orange County Public Works and the manufacturer of a professional-grade unmanned aerial system equipped with sensors to begin conducting high-resolution mapping of waterways susceptible to hydromodification. ... More

SCCWRP, partners launching outreach campaign for OAH modeling

A team of scientists that is developing a predictive model examining how the West Coast is impacted by ocean acidification and hypoxia (OAH) will launch a public outreach campaign in ... More

Harmful algae conference focuses on research, strategy

Researchers and environmental managers working to understand and address the threat of harmful algal blooms (HABs) across the nation coalesced in Long Beach in November for a five-day national scientific ... More

Stream survey tracks biological degradation across Southern California

A five-year monitoring study of Southern California’s perennial wadeable streams has found that 75% of the region’s 4,300 miles of streams are degraded, with no discernable improvements in the health ... More