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Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Paper number  701P0904,  . (doi: 10.13031/2013.17401)
Authors:   L. M. Soffran, J. L. McDowell
Keywords:   Hydrogeomorphic, HGM, minimal effects, mitigation, wetlands, wetland functions

Frequently a wetland in Kansas has been manipulated to improve farming operations or provide a reliable water source for livestock. When a wetland has been converted in violation of wetland provisions, restoration or enhancement of the remaining wetland is the primary approach used to regain the lost wetland acreage and functional capacity units.

In Kansas, the Natural Resources Conservation Service3 (NRCS) has adopted the Hydrogeomorphic (HGM) Model procedure for assessing wetland functions and values. Four interim HGM models are being used for minimal effects determinations and for mitigations of converted wetlands. The Playa Depression Model is used in the High Plains Playa region of Kansas. A Depression Model is being applied to non-riverine type depressions in the remainder of the state east of the playa region boundary. A Slope Model is used for hillside seeps, and a Riverine Model applies to wooded and herbaceous riverine settings.

Structures are frequently constructed as a component of wetland restoration and creation, and land entered into the Wetland Reserve Program or Conservation Reserve Program. The structural design may include a dike or other type of water impoundment structure. A water level control structure may be included in the design when the objective is shallow water wetlands for wildlife.

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