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Application of One- and Two-Dimensional Flow Models for an Evaluation of Riverine Wetland Hydrologic Functions

by C. Charles Tai, (M.ASCE),
Chou Fang, (A.M.ASCE),
Apurba K. Borah, (M.ASCE),



Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water

Abstract:

Preservation and restoration of wetland habitats require maintaining a desirable hydrologic regime. The criteria for such a hydrologic regime are established based on marsh inundation depths and frequencies, magnitude and duration of flood events, water level recession rates, etc. A one-dimensional and a two-dimensional flow models were calibrated for a riverine wetland. Simulated water levels differed slightly from the observed for high flow conditions, indicating that a one-dimensional model is adequate for flood simulations. For low flow conditions, however, the two-dimensional model provided water depth distributions that provided a better evaluation of wetland hydrologic criteria.

Subject Headings: Two-dimensional flow | Two-dimensional models | Wetlands (fresh water) | Hydrologic models | Water level | Simulation models | Flow simulation

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