Simulation of Reactive Constituent Fate and Transport in Hydrologic Simulator GSSHA
Abstract
The purpose of this System-Wide Water Resources Program (SWWRP) technical note is to describe the new fate and transport routines in the Gridded Surface Subsurface Hydrologic Analysis (GSSHA) model. GSSHA is a watershed analysis and management tool that has the ability to simulate the movement of water, sediment and associated constituents at fine-scale increments (< 100 m) for fine temporal scales (seconds) over watershed scale areas. The resulting tool is intended for calculating total maximum daily loads (TMDLs) (Downer and Byrd 2007), as well as analyzing project alternatives and evaluating best management practices (BMPs) designed to control contaminants. Because of the fine temporal and spatial scales that can be simulated, GSSHA has the ability to provide much greater information than commonly used TMDL models, such as Hydrological Simulation Program FORTRAN (HSPF) and Surface Water Analytical Tool (SWAT), which function on subwatershed scales and typically are used to provide information at daily, or coarser, intervals.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2009
- Accession Number
- ADA494384
Entities
People
- Charles W Downer
Organizations
- Engineer Research and Development Center