Boxelder Creek near Rapid City, SD

River level and flood forecast · Pennington County

Normal29.7 ftas of Mon 2:40 PM

The river is 3.8 ft below flood stage (33.5 ft).

The last 7 days and the forecast

2830323436TueWedThuFriSatSunMonAction 32 ftFlood 33.5 ftModerate 35 ftMajor 36 ftNowObserved (ft)NWS forecast

NWS forecast issued Sun, Dec 31, 5 PM. Forecasts change as rain falls and as upstream water arrives.

Flood stages

Major flood stage36 ft
Moderate flood stage35 ft
Flood stage33.5 ft
Action stage32 ft
Record crest (July 5, 2019)34.24 ft

What floods at each level

From the National Weather Service, highest first.

  • 36 ftMajor Flood Stage. Extensive flooding along the creek with inundation of structures and roads.
  • 35 ftModerate Flood Stage. Some inundation of structures and roads near the creek are possible.
  • 33.5 ftMinor Flood Stage. Minor flooding along the creek and downstream.
  • 32.5 ftFlooding of low lying areas along the creek continues.
  • 32 ftAction Stage. Flooding of low lying areas along the creek.

Highest crests on record

  1. 34.24 ft — July 5, 2019
  2. 33.46 ft — May 31, 1996
  3. 33.09 ft — May 10, 1995
  4. 32.69 ft — June 7, 2015
  5. 32.23 ft — June 6, 2008

Recent crests: 29.97 ft (October 2, 2020) · 30.83 ft (April 8, 2020) · 34.24 ft (July 5, 2019) · 30.94 ft (June 22, 2018) · 31.36 ft (August 14, 2017)

Up and down the river, and nearby

Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (BNRS2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.