Jun 2, 1997
During the late afternoon and early evening a localized but rather intense flash-flood occurred in the Rapid Creek drainage basin. A thunderstorm produced rainfall amounts of 2 to 3 inches in less than an hour from Deerfield to Rapid City. More localized amounts of four and a half inches in a half hour period were reported in the Chapel Valley area, where extensive damage was also reported. In Cleghorn Canyon, appropriately 7 miles southwest of Rapid City, the water was six to eight feet deep
Source: NOAA National Weather Service Storm Events Database (event 5604862). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Pennington County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.