Gridded Surface Subsurface Hydrologic Analysis GSSHA

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Gridded Surface Subsurface Hydrologic Analysis
(GSSHA)
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Overview

• Description
• Processes
• Building a GSSHA model
• Demo
• More information

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Description

• Physically based, distributed model
• 2-D finite difference grid
• 1-D hydraulic channels
• Hydrologic process modeling vs. total system
  response

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Processes

• Precipitation
• 2-D overland flow
• Evapotranspiration
• Infiltration
• 1-D channel routing, including hydraulic
  structures
• Wetlands
• Lakes/reservoirs
• Embankments/levees
• Soil moisture
• Groundwater
• Erosion/transport
• Continuous simulations
• Storm/tile drains

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Building a GSSHA model

• Select grid size
• Job control
• Roughness
• Precipitation
• Save GSSHA project file
• Smooth grid
• Run GSSHA
• Post processing
• Demos

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More information

• http//chl.erdc.usace.army.mil/gssha
• www.ems-i.com
• Questions?