Name: 100' Stream Buffer (70-360 Acre)
Display Field: STR70_VAL
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Description: Estimated flood plain areas. Streams draining a watershed with a drainage area of greater than 70 acres but less than 360 acres (i.e. "minor floodplains") were buffered 100 feet on each side.A high-resolution Digital Elevation Model (DEM) of the county, created from over 1.1 million spot elevations, was used to create synthetic stream networks at 70ac a threshold. This synthetic stream network was then used to create a floodplain stream centerline for streams draining a watershed with a drainage area of greater than 70 acres but less than 360 acres (i.e. "minor floodplains"). The synthetic stream network was then used as the stream centerline to which the buffer was applied. Therefore, the gridded stream network was used to both locate the centerline against which the buffer was applied, and to determine the drainage area at any given point along a stream.
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Spatial Reference: 102100 (3857)
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