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METHODS TO DIAGNOSE CAUSES OF BIOLOGICAL IMPAIRMENT
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Impact/Purpose:
The purpose of this research project is to provide methods, tools and guidance to Regions, States and Tribes to support the TMDL program. This research will investigate new measurement methods and models to link stressors to biological responses and will use existing data and knowledge to develop strategies to determine the causes of biological impairment in rivers and streams. Research will be performed across multiple spatial scales, site, subwatershed, watershed, basin, ecoregion and regional/state.
Description:
To achieve the nation's water quality goals of "fishable and swimmable" waters, the Agency is tasked with implementation of the Total Maximum Daily Load (TMDL) program. The objective of the TMDL program is attainment of ambient water quality standards through the control of both point and non-point sources of pollution. As stated in the National Resource Council report "Assessing the TMDL Approach to Water Quality Management", the most pressing and significant regulatory water quality challenge for the states since the passage of the Clean Water Act is the ability to identify the amount by which point and non-point sources of pollution must be reduced in order for waterbodies to meet water quality standards. NERL is currently undertaking research to provide states methods, tools and guidance for the identification of the sources and quantity of pollutants that are causing impairments to our Nation's water bodies. This research encompasses methods to evaluate levels of potential stressors in streams and rivers, development of models to link environmental stressors to biological responses, evaluation of approaches for site selection for assessments, guidance for determining the causes of impairments to rivers and streams, and development of a Causal Analysis and Diagnosis Decision Information System (CADDIS). Research in this task is closely coordinated with research in Task 8734: Development of Ecological Indicators for Aquatic Systems.
Record Details:
Record Type:PROJECT
Start Date:10/01/2000
Projected Completion Date:10/01/2008
OMB Category:Other
Record ID:
29206
Keywords:
TMDL, ECOLOGICAL EXPOSURE, INDICATORS, MEASUREMENTS, NON-POINT SOURCE, DIAGNOSIS OF STRESSORS, CAUSAL ASSESSMENTS,Related Records:
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Project Information:
Progress :The majority of the work in this task is identified in four subtasks: 1) Measurement Methods for Evaluating Levels of Potential Stressors in Streams and Rivers, 2) Development of Riparian Zone Indicators and Ecological Based Nutrient and Sediment Criteria for Derivations of Total Maximum Daily Load (TMDL) in Freshwater Streams, 3) Evaluation of Approaches for Site Selection for Monitoring and Assessment and 4) Determining the Causes of Impairments to Rivers and Streams. The progress to date is provided in each subtask. One research project is included in the main Task 6600.Relevance :
The Office of Water identified several areas of research to support EPA's TMDL program in the report "The Twenty Needs Report: How Research Can Improve the TMDL Program". This report summarizes science needs identified by the National Research Council (NRC), States and Tribes, EPA National and Regional TMDL programs, the private sector, and others. Research outlined in this task specifically addresses four needs listed in the report: 1) provide ORD technical support and technical information transfer, 2) improve watershed and water quality monitoring, 3) make monitoring more program-relevant and results-relevant, and 4) assist states in monitoring design development. Regional TMDL staff ranked the first three of these needs among their highest research priorities.
In general, successful completion of the research in this task will provide EPA Regions, States and Tribes methods, tools and guidance for the identification of the sources and quantity of pollutants that are causing impairments to our Nation's water bodies. Specific impacts are described in each subtask.
Clients :Office of Science and Technology (OST), Office of Wetlands, Oceans, and Watersheds (OWOW), Office of Water (OW), Regions, States, and Tribes.
Project IDs:
ID Code :6600Project type :OMIS