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Title: Technical guide for the development, evaluation, and modification of stream assessment methods for the Corps Regulatory Program
Authors: David, Gabrielle C. L.
Somerville, D. Eric.
McCarthy, Julia M.
MacNeil, Spencer D.
Fitzpatrick, Faith A.
Evans, Ryan.
Wilson, David B.
Keywords: Assessment method
Environmental management
Method development
Qualitative assessment method
Quantitative assessment method
Stream assessment
Stream condition
Stream function
Stream mitigation
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Special Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/CRREL SR-21-2
Abstract: The U.S. Army Corps Regulatory Program considers the loss (impacts) and gain (compensatory mitigation) of aquatic resource functions as part of Clean Water Act Section 404 permitting and compensatory mitigation decisions. To better inform this regulatory decision-making, the Regulatory Program needs transparent and objective approaches to assess the function and condition of aquatic resources, including streams. Therefore, the Regulatory Program needs function-based stream assessments (1) to characterize a stream’s condition or function, (2) to improve understanding of the impact of a proposed action on an aquatic resource, and/or (3) to inform the development of stream compensatory mitigation tools rooted in stream condition and/or function. A function-based stream assessment can provide regulatory decision makers with the resources to objectively consider alternatives, minimize impacts, assess unavoidable impacts, determine mitigation requirements, and monitor the success of mitigation projects. A multiagency National Committee on Stream Assessment (NCSA) convened to create these guidelines to inform the development of new methods and evaluation of both national-level and regional methods currently in use. The resulting guidelines present nine phases, including rationale and recommendations to facilitate work efforts. The NCSA hopes that this technical guide promotes transparency, technical defensibility, and consistent application of stream assessments in the Regulatory Program.
Description: Technical Report
Gov't Doc #: ERDC/CRREL SR-21-2
Rights: Approved for Public Release; Distribution is Unlimited
Appears in Collections:Special Report

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