WMS:Create Reservoir in DEMs

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The Create Reservoir command is used to create a new storage capacity curve for a selected outlet point.

Creating a Storage Capacity Curve

At this point only the Create storage capacity curve option is available for DEMs. The storage capacity curve defines a relationship between elevation/area/volume and is computed from the DEM cell elevations. These three curves are stored in the storage list used by the time series editor so that they can be used later to define routing in one of the supported hydrologic models or in the detention basin calculator. WMS computes these relationships by beginning at the outlet elevation and incrementing the elevation by the number of specified divisions until the specified water surface elevation is obtained. At each increment the area between that elevation and the outlet elevation is computed and then volumes between adjacent surface elevations are computed using the conic method. The storage capacity (elevation, area, volume) data can be stored in either English or metric units.

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