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Slope-Area Measurements in Northern Black Hills, SD

Detailed Description

USGS researchers running slope-area measurement in Keough Draw following storm of August 5, 2014. A group of thunderstorms produced greater than 4 inches of rain during four periods of progressively more intense rainfall across a small part of a relatively high-elevation area of the northern Black Hills on August 5, 2014. The resulting hydrologic response was noteworthy in two very small headwater drainage basins (Ward and Keogh Draws), where the measured peak flows are by far the largest--relative to drainage area--ever documented for the high-elevation Limetone Plateau area.


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