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SMC study suggests not all strategies to protect health of erosion-prone streams created equal

The Southern California Stormwater Monitoring Coalition (SMC) has completed an analysis shedding light on whether next-generation management strategies for reducing erosion risk in streams could be more effective at protecting ... More

Pilot study incorporates eDNA identification methods into routine stream monitoring

SCCWRP and its partners have shown in a proof-of-concept study that regional stream monitoring programs can be used to track endangered and invasive aquatic species using the environmental DNA – ... More

Study shows acidification triggering adverse biological impacts in Dungeness crab larvae

A three-year study examining the sensitivity of Dungeness crab larvae to ocean acidification along the U.S. West Coast has found that this commercially important species already is being adversely impacted ... More

Wastewater being used to track COVID-19 infections

A national research team that includes SCCWRP has begun investigating how wastewater influent could be used to monitor the prevalence of COVID-19 infections in communities in near real time. The ... More

Non-targeted analysis to be tested in Ventura County source tracking study

SCCWRP has launched a study with Ventura County exploring how the unique chemical patterns inside storm drains might be used to identify and track sources of human fecal contamination in ... More

DNA-based methods for identifying algae shown to be reliable, possibly more insightful

SCCWRP and its partners have shown in a proof-of-concept study that using DNA methods to conduct algae-based assessments of stream health offers a reliable, cost-effective alternative to traditional biological assessment ... More

Flow duration tool providing foundation for change in federal oversight of streams

A SCCWRP-developed approach for determining the flow duration patterns of streams in the U.S. Southwest is serving as the technical centerpiece in an ongoing effort to change how the federal ... More

SMC develops roadmap to improve runoff water quality

The Southern California Stormwater Monitoring Coalition (SMC) has unveiled a comprehensive, multi-faceted research agenda that lays out a vision and roadmap for how the region’s stormwater management community will collaborate ... More

SCCWRP reflects on progress, achievements over 50 years

SCCWRP celebrated its 50th anniversary in October with a special program at the Aquarium of the Pacific in Long Beach that highlighted the agency’s progress and achievements over the past ... More

International study kicks off to standardize microplastics monitoring methods

SCCWRP and its partners have launched an international study to develop standardized methods for measuring microplastic particles in aquatic environments, an effort that has the potential to improve the accuracy ... More

Study underscores complexity of predicting acidification’s impacts on marine organisms

SCCWRP and its partners have completed a three-year study examining the vulnerability of fisheries in the world’s polar regions to ocean acidification (OA) – an analysis that has illuminated the ... More

Guidance prepared on how to use bioanalytical assays to screen for contaminants

SCCWRP has partnered with the National Water Research Institute (NWRI) to co-author guidance for California’s water recycling community on how to incorporate bioanalytical screening technology into routine water-quality monitoring. The ... More

Dynamic exposure lab built to replicate fluctuating environmental conditions

SCCWRP has constructed a state-of-the-art dynamic exposure laboratory to study how aquatic organisms respond to fluctuations in pH, dissolved oxygen and other environmental parameters in a controlled setting – a ... More

Modeling shows nutrient discharges can influence coastal acidification, hypoxia

A computer modeling initiative to understand how Southern California’s coastal ocean will be affected by ocean acidification and hypoxia has shown that land-based sources of nutrients can have a measurable ... More

Ocean currents model to be evaluated as part of study examining Tijuana pollution flows

SCCWRP and its partners will use field data from an ongoing study tracking persistent fecal contamination at Imperial Beach near the U.S.-Mexico border to evaluate a computer model that predicts ... More

Three key stream condition indicators integrated via index

The Southern California Stormwater Monitoring Coalition (SMC) and SCCWRP have developed a new assessment tool that synthesizes three key lines of evidence about the ecological health of wadeable streams to ... More

Tool developed to assess BMP performance effectiveness

SCCWRP has developed an integrated web-based tool intended to help California’s stormwater management community assess the effectiveness of vegetated swales, permeable pavement and other best management practices (BMPs) in removing ... More

Science products endorsed as foundation for crafting statewide stream policy

An expert scientific panel has endorsed a set of draft science products developed by SCCWRP as a strong technical foundation for crafting a State Water Board policy intended to better ... More

International microplastics measurement study being developed following 2-day workshop

A group of international experts on aquatic microplastic pollution that convened at SCCWRP for a two-day workshop in April has begun laying the groundwork to build scientific consensus around methods ... More

Newport Bay study to examine scientific basis for shellfish water-quality standard

SCCWRP and its partners will launch a study in May evaluating whether a water-quality standard designed to protect the health of people who consume shellfish from Newport Bay in Orange ... More

Report outlines strategy for protecting coastal wetlands

Coastal resources managers have an opportunity to increase the total size of Southern California’s coastal wetlands in the coming decades even as rising sea levels permanently submerge existing wetland areas, ... More

Science workshop to jump-start planning for microplastics monitoring in California

Leading international experts on aquatic microplastic pollution will convene at SCCWRP this spring to begin exploring how California could monitor microplastic particles in drinking water and the coastal ocean, a ... More

New modeling tool to help speed up causal assessment work

SCCWRP and its partners have developed a statistical modeling tool for conducting causal assessments that could help shave a year or more off the time required to narrow down potential ... More

Puget Sound study shows coastal estuaries could be impacted by acidification

SCCWRP and its partners have shown in a set of preliminary analyses of Washington’s Puget Sound that coastal estuary environments have the potential to be impacted by ocean acidification (OA) ... More

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

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

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

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

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

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

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

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

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

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

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

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

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 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

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

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

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

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

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

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

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