WMS:What's new in WMS version 10.0

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The WMS software development team is excited about the release of WMS 10.0! This page lists the exciting new features that have been added to WMS 10.0.

What's new in WMS 10.0

GSSHA Interface and Model Updates

Model Calibration Updates

The newest version of GSSHA supports PEST-style automated calibration methods. WMS 10.0 has an interface to these automated calibration methods in GSSHA. More information about automated calibration in GSSHA using WMS 10.0 is located here.

Depth Varying Overland Flow Roughness

The newest version of GSSHA has a mapping table that supports a depth-varying overland flow roughness exponent. This parameter is used in addition to the roughness mapping table. Without the addition of this table, a default exponent of 0.0 is used, which means the roughness does not change with overland flow depth.

GSSHA Roughness Exponent Mapping Table Editor

Link/Node-Specific Overbank and Backwater Options

GSSHA previously had two options that could be defined globally. The first option, the overbank flow option (OVERBANK_FLOW), increases the level of connection between the overland flow and the channel in the 1D hydraulic model by allowing water to spill from the channel back onto the overland flow plane. If the second option, the overland backwater option (OVERLAND_BACKWATER), is turned on, flow from the overland flow model to the channel in the 1D hydraulic model is restricted if the elevation of the water in the channel exceeds the overland cell elevation. This option can now be defined at each of the arcs (links) in your GSSHA model in the GSSHA arc properties dialog. If this option is defined for one of the arcs, the global option is turned off.

GSSHA Overbank and Backwater Options in the Arc Properties dialog

Storm and Tile Drain Interface Tools

WMS 10.0 contains many new GSSHA storm and tile drain interface tools. A detailed description of all the tools available here.

New GSSHA Tutorial


Hydrologic Modeling System (HEC-HMS) 4.0 Support

Added capability to define snow melt, deficit and constant, and other gridded parameters for ModClark Grid

New HMS Tutorial


National Streamflow Statistics (NSS) 6.0 Support


EPA-SWMM Updates

Sanitary Sewer Modeling Options

Sanitary sewer coverage Define Diurnal curve dialog, import curve names, and assign curves to nodes/manholes, export to SWMM Import infiltration and domestic flows from shapefiles and export to SWMM Import a peaking factor for the domestic flows and export to SWMM Import SWMM 5 model with sanitary sewer options into WMS and export to shapefile


SWMM 5.1 Support


Additional Web Services

FEMA Flood Maps

Add option to download FEMA flood maps using web services


Precipitation Web Services

NOAA Atlas 14

NCDC Station Information


Bug fixes

To view the list of bugs fixed in WMS 10.0, visit the WMS bugfix page.