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Updated: Nov 5, 2025

Watershed Planning within a Quantitative Scenario Analysis Framework
Published on: July 24, 2016
An Integrated Assessment Model for Valuing Water Quality Changes in the U.S
Joel Corona1, Todd Doley2, Charles Griffiths3
1United States Environmental Protection Agency (US EPA), Office of Water, Washington, District of Columbia.
Abstract:
The US Environmental Protection Agency (EPA) often requires expertise from environmental assessors, hydrologists, economists, and others to analyze the benefits of regional and national policy decisions related to changes in water quality. This led EPA to develop two models to form an Integrated Assessment Model (IAM): HAWQS is a web-based water quantity and quality modeling systems and BenSPLASH is a modeling platform for quantifying the economic benefits of changes in water quality. This paper discusses the development of the component models and applies HAWQS and BenSPLASH to a case study in the Republican River Basin.
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