Model:GSSHA

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GSSHA

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Summary Contact Technical specs In/Output Process Testing Other Component info Also known as Model type Modular Model part of larger framework Note on status model Date note status model Spatial dimensions 1.5D, 2D Spatial extent Watershed-Scale Model domain Hydrology, Terrestrial One-line model description Coupled distributed engineering hydrology, sediment, contaminant fate/transport Extended model description Gridded Surface Subsurface Hydrologic Analysis (GSSHA) is a grid-based two-dimensional hydrologic model. Features include 2D overland flow, 1D stream flow, 1D infiltration, 2D groundwater, and full coupling between the groundwater, vadoze zone, streams, and overland flow. GSSHA can run in both single event and long-term modes. The fully coupled groundwater to surfacewater interaction allows GSSHA to model both Hortonian and Non-Hortonian basins. New features of version 2.0 include support for small lakes and detention basins, wetlands, improved sediment transport, and an improved stream flow model. GSSHA has been successfully used to predict soil moistures as well as runoff and flooding. Keywords: Hydrological model, basin, Name Fred Ogden Type of contact Model developer Institute / Organization University of Wyoming Postal address 1 1000 E. Univ. Ave Postal address 2 Dept. of Civil & Architectural Engineering Town / City Laramie Postal code 82071 State Wyoming Country United States Email address fogden@uwyo.edu Phone 307-766-6171 Fax 307-766-2221 Name Charles Downer Type of contact Model developer Institute / Organization Postal address 1 Postal address 2 Town / City Postal code State Country Email address Phone Fax Name Aaron Byrd Type of contact Technical contact Institute / Organization U.S. Army Corps of Engineers Postal address 1 3909 Halls Ferry Rd. Postal address 2 Town / City Vicksburg Postal code 39180 State Mississippi Country Email address Aaron.R.Byrd@usace.army.mil Phone 6016342473 Fax Supported platforms Unix, Linux, Mac OS, Windows Other platform Programming language C++ Other program language Code optimized Single Processor, Multiple Processors Multiple processors implemented Nr of distributed processors Nr of shared processors Start year development 1988 Does model development still take place? Yes If above answer is no, provide end year model development Code development status When did you indicate the 'code development status'? Model availability As code, As teaching tool Source code availability (Or provide future intension) Source web address Source csdms web address Program license type Other Program license type other -- Memory requirements Depends on catchment Typical run time depends on catchment size and process algorithms selected Describe input parameters DEM, land-use/land-cover, stream channels, precipitation, soils, aquifer maps. These index maps are used to classify catchment parameters related to overland/channel flow, soil/aquifer hydraulic properties, soil erodibility, contaminant loadings, etc. Model setup is greatly enhanced by the use of the US Dept. of Defense Watershed Modeling System (WMS), which serves as an interface between GSSHA and Arc/Info Input format ASCII, Binary Other input format US Dept. of Defense Watershed Modeling System (WMS) Describe output parameters Flow rates, depths, soil moisture, sediment fluxes, erosion/deposition, contaminant/nutrient fluxes and concentrations, groundwater levels, reservoir storages. Output format ASCII, Binary Other output format US Dept. of Defense Watershed Modeling System (WMS) Pre-processing software needed? No Describe pre-processing software Post-processing software needed? Yes Describe post-processing software yes, The US Dept. of Defense Watershed Modeling system can produce animations of model outputs. Run summary file includes detailed mass balance information. Output time series can be analyzed using spreadsheet or other software. Visualization software needed? Yes If above answer is yes Other visualization software Dept. of Defense, Watershed Modeling System (WMS) Describe processes represented by the model Processes: Rainfall: gage with nearest neighbor or inverse distance-squared weighting, radar. Interception: empirical model. Infiltration: Green & Ampt, Green & Ampt with redistribution, three-layer Green & Ampt, or Richard's equation. Overland runoff: 2-D finite volume diffusive wave with overland flow dykes and pothole lakes. Channel routing: 1-D dendritic finite-volume diffusive wave with culverts, on-channel lakes, rule curves, rating curves, scheduled releases. Groundwater: 2-D finite-difference with wells and various boundary conditions. Overland erosion: three alternative source equations, raindrop impact, erosion limits, deposition, arbitrary size classes. Channel sediment transport: advection-diffusion for fines, stream power for sands. Fate and transport of conservative and non-conservative constituents in soil, overland, and channels Describe key physical parameters and equations Too much to describe in only 500 characters! See: http://www.gsshawiki.com/wiki/index.php5?title=Main_Page Describe length scale and resolution constraints Dependent upon computational power and memory. Describe time scale and resolution constraints Dependent upon computational power and memory. Describe any numerical limitations and issues Explicit finite volume routing formulations are time-step limited. Describe available calibration data sets http://www.gsshawiki.com/wiki/index.php5?title=Main_Page Upload calibration data sets if available: Describe available test data sets http://www.gsshawiki.com/wiki/index.php5?title=Main_Page Upload test data sets if available: Describe ideal data for testing Do you have current or future plans for collaborating with other researchers? The development of GSSHA has been funded by the US Army Corps of Engineers, Engineer Research and Development Center, Vicksburg, Mississippi. GSSHA is being actively used by a number of US Army Corps of Engineers districts. Is there a manual available? Yes Upload manual if available: Model website if any http://chl.erdc.usace.army.mil/gssha Model forum / discussion board Comments Current version is 5.0 This part will be filled out by CSDMS staff OpenMI compliant No but possible BMI compliant No but possible WMT component No but possible PyMT component Is this a data component Can be coupled with:

Model info Authors Fred Ogden Downer, Byrd Source code Model citations Nr. of publications: -- Total citations: 0 h-index: --"--" is not a number. m-quotient: 0 QR-code Link to this page Other models by author GSSHA

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