https://csdms.colorado.edu/csdms_wiki/api.php?action=feedcontributions&feedformat=atom&user=Aabyrd 2026-04-30T00:33:22Z User contributions MediaWiki 1.44.2 https://csdms.colorado.edu/csdms_wiki/index.php?title=Model:GSSHA&diff=18363 2011-01-13T20:51:28Z

<p>Aabyrd: </p> <hr /> <div>{{Modeler information<br /> |First name=Fred<br /> |Last name=Ogden<br /> |Type of contact=Model developer<br /> |Institute / Organization=University of Wyoming<br /> |Postal address 1=1000 E. Univ. Ave<br /> |Postal address 2=Dept. of Civil &amp; Architectural Engineering<br /> |Town / City=Laramie<br /> |Postal code=82071<br /> |State=Wyoming<br /> |Country=USA<br /> |Email address=fogden@uwyo.edu<br /> |Phone=307-766-6171<br /> |Fax=307-766-2221<br /> }}<br /> {{Additional modeler information<br /> |Additional first name=Charles<br /> |Additional last name=Downer<br /> |Additional type of contact=Model developer<br /> }}<br /> {{Additional modeler information<br /> |Additional first name=Aaron<br /> |Additional last name=Byrd<br /> |Additional type of contact=Technical contact<br /> |Additional institute / Organization=U.S. Army Corps of Engineers<br /> |Additional postal address 1=3909 Halls Ferry Rd.<br /> |Additional town / City=Vicksburg<br /> |Additional postal code=39180<br /> |Additional state=Mississippi<br /> |Additional email address=Aaron.R.Byrd@usace.army.mil<br /> |Additional phone=6016342473<br /> }}<br /> {{Model identity<br /> |Model type=Modular<br /> |Categories=Hydrology, Terrestrial<br /> |Spatial dimensions=1.5D, 2D<br /> |Spatialscale=Watershed-Scale<br /> |One-line model description=Coupled distributed engineering hydrology, sediment, contaminant fate/transport<br /> |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.<br /> New features of version 2.0 include support for small lakes and detention basins, wetlands, improved sediment transport, and an improved stream flow model.<br /> GSSHA has been successfully used to predict soil moistures as well as runoff and flooding.<br /> }}<br /> {{Model technical information<br /> |Supported platforms=Unix, Linux, Mac OS, Windows<br /> |Programming language=C++<br /> |Code optimized=Single Processor, Parallel <br /> Computing<br /> |Start year development=1988<br /> |Does model development still take place?=Yes<br /> |Model availability=As code, As teaching tool, As executable<br /> |Source code availability=Through owner<br /> |Program license type=Other<br /> |Program license type other=--<br /> |OpenMI compliant=No but possible<br /> |CCA component=No but possible<br /> |IRF interface=No but possible<br /> |Memory requirements=Depends on catchment<br /> |Typical run time=depends on catchment size and process algorithms selected<br /> }}<br /> {{Input - Output description<br /> |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<br /> |Input format=ASCII, Binary<br /> |Other input format=US Dept. of Defense Watershed Modeling System (WMS)<br /> |Describe output parameters=Flow rates, depths, soil moisture, sediment fluxes, erosion/deposition, contaminant/nutrient fluxes and concentrations, groundwater levels, reservoir storages.<br /> |Output format=ASCII, Binary<br /> |Other output format=US Dept. of Defense Watershed Modeling System (WMS)<br /> |Pre-processing software needed?=No<br /> |Post-processing software needed?=Yes<br /> |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.<br /> |Visualization software needed?=Yes<br /> |Other visualization software=Dept. of Defense, Watershed Modeling System (WMS)<br /> }}<br /> {{Process description model<br /> |Describe processes represented by the model=Processes:<br /> *Rainfall: gage with nearest neighbor or inverse distance-squared weighting, radar.<br /> *Interception: empirical model.<br /> *Infiltration: Green &amp; Ampt, Green &amp; Ampt with redistribution, three-layer Green &amp; Ampt, or Richard's equation.<br /> *Overland runoff: 2-D finite volume diffusive wave with overland flow dykes and pothole lakes.<br /> *Channel routing: 1-D dendritic finite-volume diffusive wave with culverts, on-channel lakes, rule curves, rating curves, scheduled releases.<br /> *Groundwater: 2-D finite-difference with wells and various boundary conditions.<br /> *Overland erosion: three alternative source equations, raindrop impact, erosion limits, deposition, arbitrary size classes.<br /> *Channel sediment transport: advection-diffusion for fines, stream power for sands.<br /> *Fate and transport of conservative and non-conservative<br /> constituents in soil, overland, and channels<br /> |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<br /> |Describe length scale and resolution constraints=Dependent upon computational power and memory.<br /> |Describe time scale and resolution constraints=Dependent upon computational power and memory.<br /> |Describe any numerical limitations and issues=Explicit finite volume routing formulations are time-step limited.<br /> }}<br /> {{Model testing<br /> |Describe available calibration data sets=http://www.gsshawiki.com/wiki/index.php5?title=Main_Page<br /> |Describe available test data sets=http://www.gsshawiki.com/wiki/index.php5?title=Main_Page<br /> |Describe ideal data for testing=--<br /> }}<br /> {{Users groups model<br /> |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.<br /> }}<br /> {{Documentation model<br /> |Provide key papers on model if any=Papers:<br /> *Downer, C.W., and F.L. Ogden, 2006, Gridded Surface Subsurface Hydrologic Analysis (GSSHA) User's Manual, Version 1.43 for Watershed Modeling System 6.1, System Wide Water Resources Program, Coastal and Hydraulics Laboratory, U.S. Army Corps of Engineers, Engineer Research and Development Center, ERDC/CHL SR-06-1, 207 pp.<br /> *Downer, C.W., and F.L. Ogden, 2004, Appropriate Vertical Discretization of Richard's Equation for Two-Dimensional Watershed-Scale Modelling, Hydrological Processes, 18:1-22.<br /> *Downer, C.W., and F.L. Ogden, 2004, GSSHA: A model for simulating diverse streamflow generating processes, J. Hydrol. Engrg., 9(3):161-174.<br /> *Downer, C.W., and F.L. Ogden, 2004, Prediction of runoff and soil moistures at the watershed scale: Effects of model complexity and parameter assignment, Water Resour. Res., 39(3), 10.1029/2002WR001439.<br /> *Johnson, B.E., and T.K. Gerald, 2006, Development of nutrient submodules for use in the Gridded Surface Subsurface Hydrologic Analysis (GSSHA) Distributed Watershed Model., J. Am. Water Resour. Assn., 42(6):1502-1525.<br /> *Kalin, L. and M.H. Hantush, 2006, Comparative assessment of two distributed watershed models with application to a small watershed, Hydrol. Processes, 20(11):2285-2307.<br /> *Levy, J.K., J.E.T. Moncur, and K. Takara, 2006, Introduction: Enhancing the capacity for sustainable watershed management, J. Am. Water Resour. Assn., pp. 1437-1439.<br /> |Manual model available=Yes<br /> |Model website if any=http://chl.erdc.usace.army.mil/gssha<br /> }}<br /> {{Additional comments model<br /> |Comments=Current version is 5.0<br /> }}<br /> {{Infobox Model<br /> |model name = GSSHA<br /> |developer = '''Ogden''', Fred<br /> |one-line-description = Coupled distributed engineering hydrology, sediment, contaminant fate/transport <br /> |type = Model<br /> |source = [[image:Red1.png]]<br /> }}<br /> &lt;!-- Edit the part above to update info on other papers --&gt;<br /> <br /> ==Introduction==<br /> <br /> == History ==<br /> <br /> == Papers ==<br /> <br /> == Issues ==<br /> <br /> == Help ==<br /> <br /> == Input Files ==<br /> <br /> == Output Files ==<br /> <br /> == Download ==<br /> <br /> == Source ==<br /> <br /> <br /> [[Category:Terrestrial]]</div>

Aabyrd https://csdms.colorado.edu/csdms_wiki/index.php?title=User:Aabyrd&diff=18310 2011-01-13T17:32:31Z

<p>Aabyrd: </p> <hr /> <div>{{Signup information member<br /> |First name member=Aaron<br /> |Last name member=Byrd<br /> |Institute member=U.S. Army Corps of Engineers<br /> |Department member=Engineer Research and Development Center, Coastal and Hydraulics Laboratory<br /> |Postal address 1 member=3909 Halls Ferry Rd.<br /> |City member=Vicksburg<br /> |Postal code member=39180<br /> |State member=Mississippi<br /> |Country member=USA<br /> |Confirm email member=Aaron.R.Byrd@usace.army.mil<br /> |Work phone member=6016342473<br /> |Cell phone member=6015299952<br /> |Fax member=6016344208<br /> |Working group member=Terrestrial Working Group<br /> |Focus research group member=Hydrology Focus Research Group<br /> |Description of your CSDMS-related interests member=model coupling<br /> |How did you learn about CSDMS member=From Ph.D. advisor<br /> }}</div>

Aabyrd