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...Flood Stage adjustments at the Belle Fourche River near Elm Springs... Stage datum was changed due to scouring in the channel. The datum was changed by 4.0 feet, effective October 1, 2012.
Weather Forecast Office Rapid City, SD Missouri Basin River Forecast Center
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Exceeding Levels		 Chance of Exceeding Levels
During Entire Period
Belle Fourche River at Keyhole Reservoir Pool (ft)Observed: 4095.05 ft at 1:00AM May 21, 2013Observed: 4095.02 ft at 1:15AM May 21, 2013Observed: 4095.01 ft at 1:30AM May 21, 2013Observed: 4095.02 ft at 1:45AM May 21, 2013Observed: 4095.05 ft at 2:00AM May 21, 2013Observed: 4095.04 ft at 2:15AM May 21, 2013Observed: 4095.03 ft at 2:30AM May 21, 2013Observed: 4095.03 ft at 2:45AM May 21, 2013Observed: 4095.03 ft at 3:00AM May 21, 2013Observed: 4095.05 ft at 3:15AM May 21, 2013Observed: 4095.04 ft at 3:30AM May 21, 2013Observed: 4095.04 ft at 3:45AM May 21, 2013Observed: 4095.02 ft at 4:00AM May 21, 2013Observed: 4095.02 ft at 4:15AM May 21, 2013Observed: 4095.04 ft at 4:30AM May 21, 2013Observed: 4095.05 ft at 4:45AM May 21, 2013Observed: 4095.03 ft at 5:00AM May 21, 2013Observed: 4095.02 ft at 5:15AM May 21, 2013Observed: 4095.03 ft at 5:30AM May 21, 2013Observed: 4095.04 ft at 5:45AM May 21, 2013Observed: 4095.05 ft at 6:00AM May 21, 2013Observed: 4095.03 ft at 6:15AM May 21, 2013Observed: 4095.03 ft at 6:30AM May 21, 2013Observed: 4095.02 ft at 6:45AM May 21, 2013Observed: 4095.04 ft at 7:00AM May 21, 2013Observed: 4095.04 ft at 7:15AM May 21, 2013Observed: 4095.04 ft at 7:30AM May 21, 2013Observed: 4095.02 ft at 7:45AM May 21, 2013Observed: 4095.03 ft at 8:00AM May 21, 2013Observed: 4095.04 ft at 8:15AM May 21, 2013Observed: 4095.04 ft at 8:30AM May 21, 2013Observed: 4095.03 ft at 8:45AM May 21, 2013Observed: 4095.02 ft at 9:00AM May 21, 2013Observed: 4095.02 ft at 9:15AM May 21, 2013Observed: 4095.04 ft at 9:30AM May 21, 2013Observed: 4095.04 ft at 9:45AM May 21, 2013Observed: 4095.03 ft at 10:00AM May 21, 2013Observed: 4095.02 ft at 10:15AM May 21, 2013Observed: 4095.02 ft at 10:30AM May 21, 2013Observed: 4095.03 ft at 10:45AM May 21, 2013Observed: 4095.04 ft at 11:00AM May 21, 2013Observed: 4095.02 ft at 11:15AM May 21, 2013Observed: 4095.02 ft at 11:30AM May 21, 2013Observed: 4095.02 ft at 11:45AM May 21, 2013Observed: 4095.03 ft at 12:00PM May 21, 2013Observed: 4095.03 ft at 12:15PM May 21, 2013Observed: 4095.02 ft at 12:30PM May 21, 2013Observed: 4095.02 ft at 12:45PM May 21, 2013Observed: 4095.03 ft at 1:00PM May 21, 2013Observed: 4095.02 ft at 1:15PM May 21, 2013Observed: 4095.03 ft at 1:30PM May 21, 2013Observed: 4095.02 ft at 1:45PM May 21, 2013Observed: 4095.03 ft at 2:00PM May 21, 2013Observed: 4095.02 ft at 2:15PM May 21, 2013Observed: 4095.04 ft at 2:30PM May 21, 2013Observed: 4095.02 ft at 2:45PM May 21, 2013Observed: 4095.03 ft at 3:00PM May 21, 2013Observed: 4095.02 ft at 3:15PM May 21, 2013Observed: 4095.04 ft at 3:30PM May 21, 2013Observed: 4095.02 ft at 3:45PM May 21, 2013Observed: 4095.03 ft at 4:00PM May 21, 2013Observed: 4095.01 ft at 4:15PM May 21, 2013Observed: 4095.03 ft at 4:30PM May 21, 2013Observed: 4095.02 ft at 4:45PM May 21, 2013Observed: 4095.03 ft at 5:00PM May 21, 2013Observed: 4095.02 ft at 5:15PM May 21, 2013Observed: 4095.03 ft at 5:30PM May 21, 2013Observed: 4095.02 ft at 5:45PM May 21, 2013Observed: 4095.03 ft at 6:00PM May 21, 2013Observed: 4095.04 ft at 6:15PM May 21, 2013Observed: 4095.03 ft at 6:30PM May 21, 2013Observed: 4095.03 ft at 6:45PM May 21, 2013Observed: 4095.01 ft at 7:00PM May 21, 2013Observed: 4095.03 ft at 7:15PM May 21, 2013Observed: 4095.04 ft at 7:30PM May 21, 2013Observed: 4095.05 ft at 7:45PM May 21, 2013Observed: 4095.02 ft at 8:00PM May 21, 2013Observed: 4095.02 ft at 8:15PM May 21, 2013Observed: 4095.03 ft at 8:30PM May 21, 2013Observed: 4095.04 ft at 8:45PM May 21, 2013Observed: 4095.03 ft at 9:00PM May 21, 2013Observed: 4095.03 ft at 9:15PM May 21, 2013Observed: 4095.02 ft at 9:30PM May 21, 2013Observed: 4095.03 ft at 9:45PM May 21, 2013Observed: 4095.04 ft at 10:00PM May 21, 2013Observed: 4095.04 ft at 10:15PM May 21, 2013Observed: 4095.03 ft at 10:30PM May 21, 2013Observed: 4095.02 ft at 10:45PM May 21, 2013Observed: 4095.03 ft at 11:00PM May 21, 2013Observed: 4095.04 ft at 11:15PM May 21, 2013Observed: 4095.04 ft at 11:30PM May 21, 2013Observed: 4095.03 ft at 11:45PM May 21, 2013Observed: 4095.02 ft at 12:00AM May 22, 2013Observed: 4095.03 ft at 12:15AM May 22, 2013Observed: 4095.04 ft at 12:30AM May 22, 2013Observed: 4095.04 ft at 12:45AM May 22, 2013Observed: 4095.03 ft at 1:00AM May 22, 2013Observed: 4095.03 ft at 1:15AM May 22, 2013Observed: 4095.03 ft at 1:30AM May 22, 2013Observed: 4095.04 ft at 1:45AM May 22, 2013Observed: 4095.04 ft at 2:00AM May 22, 2013Observed: 4095.04 ft at 2:15AM May 22, 2013Observed: 4095.03 ft at 2:30AM May 22, 2013Observed: 4095.04 ft at 2:45AM May 22, 2013Observed: 4095.04 ft at 3:00AM May 22, 2013Observed: 4095.04 ft at 3:15AM May 22, 2013Observed: 4095.03 ft at 3:30AM May 22, 2013Observed: 4095.03 ft at 3:45AM May 22, 2013Observed: 4095.03 ft at 4:00AM May 22, 2013Observed: 4095.04 ft at 4:15AM May 22, 2013Observed: 4095.03 ft at 4:30AM May 22, 2013Observed: 4095.04 ft at 4:45AM May 22, 2013Observed: 4095.03 ft at 5:00AM May 22, 2013Observed: 4095.03 ft at 5:15AM May 22, 2013Observed: 4095.03 ft at 5:30AM May 22, 2013Observed: 4095.05 ft at 5:45AM May 22, 2013Observed: 4095.03 ft at 6:00AM May 22, 2013Observed: 4095.03 ft at 6:15AM May 22, 2013Observed: 4095.03 ft at 6:30AM May 22, 2013Observed: 4095.04 ft at 6:45AM May 22, 2013Observed: 4095.04 ft at 7:00AM May 22, 2013Observed: 4095.04 ft at 7:15AM May 22, 2013Observed: 4095.03 ft at 7:30AM May 22, 2013Observed: 4095.03 ft at 7:45AM May 22, 2013Observed: 4095.04 ft at 8:00AM May 22, 2013Observed: 4095.04 ft at 8:15AM May 22, 2013Observed: 4095.05 ft at 8:30AM May 22, 2013Observed: 4095.02 ft at 8:45AM May 22, 2013Observed: 4095.03 ft at 9:00AM May 22, 2013Observed: 4095.03 ft at 9:15AM May 22, 2013Observed: 4095.05 ft at 9:30AM May 22, 2013Observed: 4095.05 ft at 9:45AM May 22, 2013Observed: 4095.04 ft at 10:00AM May 22, 2013Observed: 4095.03 ft at 10:15AM May 22, 2013Observed: 4095.04 ft at 10:30AM May 22, 2013Observed: 4095.05 ft at 10:45AM May 22, 2013Observed: 4095.05 ft at 11:00AM May 22, 2013Observed: 4095.03 ft at 11:15AM May 22, 2013Observed: 4095.03 ft at 11:30AM May 22, 2013Observed: 4095.03 ft at 11:45AM May 22, 2013Observed: 4095.04 ft at 12:00PM May 22, 2013Observed: 4095.04 ft at 12:15PM May 22, 2013Observed: 4095.03 ft at 12:30PM May 22, 2013Observed: 4095.03 ft at 12:45PM May 22, 2013Observed: 4095.03 ft at 1:00PM May 22, 2013Observed: 4095.04 ft at 1:15PM May 22, 2013Observed: 4095.04 ft at 1:30PM May 22, 2013Observed: 4095.03 ft at 1:45PM May 22, 2013Observed: 4095.02 ft at 2:00PM May 22, 2013Observed: 4095.02 ft at 2:15PM May 22, 2013Observed: 4095.03 ft at 2:30PM May 22, 2013Observed: 4095.03 ft at 2:45PM May 22, 2013Observed: 4095.03 ft at 3:00PM May 22, 2013Observed: 4095.01 ft at 3:15PM May 22, 2013Observed: 4095.02 ft at 3:30PM May 22, 2013Observed: 4095.02 ft at 3:45PM May 22, 2013Observed: 4095.03 ft at 4:00PM May 22, 2013Observed: 4095.01 ft at 4:15PM May 22, 2013Observed: 4095.01 ft at 4:30PM May 22, 2013Observed: 4095 ft at 4:45PM May 22, 2013Observed: 4095.03 ft at 5:00PM May 22, 2013Observed: 4095.01 ft at 5:15PM May 22, 2013Observed: 4095.02 ft at 5:30PM May 22, 2013Observed: 4094.99 ft at 5:45PM May 22, 2013Observed: 4095 ft at 6:00PM May 22, 2013Observed: 4095.01 ft at 6:15PM May 22, 2013Observed: 4095.02 ft at 6:30PM May 22, 2013Observed: 4095 ft at 6:45PM May 22, 2013Observed: 4095 ft at 7:00PM May 22, 2013Observed: 4095 ft at 7:15PM May 22, 2013Observed: 4095.02 ft at 7:30PM May 22, 2013Observed: 4095.02 ft at 7:45PM May 22, 2013Observed: 4095.02 ft at 8:00PM May 22, 2013Observed: 4095.01 ft at 8:15PM May 22, 2013Observed: 4095.01 ft at 8:30PM May 22, 2013Observed: 4095.03 ft at 8:45PM May 22, 2013Observed: 4095.02 ft at 9:00PM May 22, 2013Observed: 4095.03 ft at 9:15PM May 22, 2013Observed: 4095.02 ft at 9:30PM May 22, 2013Observed: 4095.03 ft at 9:45PM May 22, 2013Observed: 4095.03 ft at 10:00PM May 22, 2013Observed: 4095.03 ft at 10:15PM May 22, 2013Observed: 4095.03 ft at 10:30PM May 22, 2013Observed: 4095.02 ft at 10:45PM May 22, 2013Observed: 4095.02 ft at 11:00PM May 22, 2013Observed: 4095.04 ft at 11:15PM May 22, 2013Observed: 4095.04 ft at 11:30PM May 22, 2013Observed: 4095.02 ft at 11:45PM May 22, 2013Observed: 4095.02 ft at 12:00AM May 23, 2013Observed: 4095.02 ft at 12:15AM May 23, 2013Observed: 4095.03 ft at 12:30AM May 23, 2013Observed: 4095.04 ft at 12:45AM May 23, 2013Observed: 4095.04 ft at 1:00AM May 23, 2013Observed: 4095.02 ft at 1:15AM May 23, 2013Observed: 4095.02 ft at 1:30AM May 23, 2013Observed: 4095.03 ft at 1:45AM May 23, 2013Observed: 4095.04 ft at 2:00AM May 23, 2013Observed: 4095.03 ft at 2:15AM May 23, 2013Observed: 4095.02 ft at 2:30AM May 23, 2013Observed: 4095.02 ft at 2:45AM May 23, 2013Observed: 4095.03 ft at 3:00AM May 23, 2013Observed: 4095.05 ft at 3:15AM May 23, 2013Observed: 4095.04 ft at 3:30AM May 23, 2013Observed: 4095.02 ft at 3:45AM May 23, 2013Observed: 4095.02 ft at 4:00AM May 23, 2013Observed: 4095.02 ft at 4:15AM May 23, 2013Observed: 4095.04 ft at 4:30AM May 23, 2013Observed: 4095.04 ft at 4:45AM May 23, 2013Observed: 4095.02 ft at 5:00AM May 23, 2013Observed: 4095.02 ft at 5:15AM May 23, 2013Observed: 4095.03 ft at 5:30AM May 23, 2013Observed: 4095.05 ft at 5:45AM May 23, 2013Observed: 4095.05 ft at 6:00AM May 23, 2013Observed: 4095.03 ft at 6:15AM May 23, 2013Observed: 4095.02 ft at 6:30AM May 23, 2013Observed: 4095.04 ft at 6:45AM May 23, 2013Observed: 4095.05 ft at 7:00AM May 23, 2013Observed: 4095.06 ft at 7:15AM May 23, 2013Observed: 4095.03 ft at 7:30AM May 23, 2013Observed: 4095.03 ft at 7:45AM May 23, 2013Observed: 4095.02 ft at 8:00AM May 23, 2013Observed: 4095.06 ft at 8:15AM May 23, 2013Observed: 4095.06 ft at 8:30AM May 23, 2013Observed: 4095.04 ft at 8:45AM May 23, 2013Observed: 4095.02 ft at 9:00AM May 23, 2013Observed: 4095.04 ft at 9:15AM May 23, 2013Observed: 4095.05 ft at 9:30AM May 23, 2013Observed: 4095.05 ft at 9:45AM May 23, 2013Observed: 4095.05 ft at 10:00AM May 23, 2013Observed: 4095.04 ft at 10:15AM May 23, 2013Observed: 4095.04 ft at 10:30AM May 23, 2013Observed: 4095.04 ft at 10:45AM May 23, 2013Observed: 4095.04 ft at 11:00AM May 23, 2013Observed: 4095.04 ft at 11:15AM May 23, 2013Observed: 4095.02 ft at 11:30AM May 23, 2013Observed: 4095.04 ft at 11:45AM May 23, 2013Observed: 4095.05 ft at 12:00PM May 23, 2013Observed: 4095.03 ft at 12:15PM May 23, 2013Observed: 4095.03 ft at 12:30PM May 23, 2013Observed: 4095.05 ft at 12:45PM May 23, 2013Observed: 4095.02 ft at 1:00PM May 23, 2013Observed: 4095.03 ft at 1:15PM May 23, 2013Observed: 4095.02 ft at 1:30PM May 23, 2013Highest Observation: 4095.07 ft at 1:45PM May 23, 2013Observed: 4095.04 ft at 2:00PM May 23, 2013Observed: 4095.03 ft at 2:15PM May 23, 2013Observed: 4095.01 ft at 2:30PM May 23, 2013Observed: 4095.02 ft at 2:45PM May 23, 2013Observed: 4095.02 ft at 3:00PM May 23, 2013Observed: 4095.06 ft at 3:15PM May 23, 2013Observed: 4095.02 ft at 3:30PM May 23, 2013Observed: 4095.02 ft at 3:45PM May 23, 2013Observed: 4095 ft at 4:00PM May 23, 2013Observed: 4095.04 ft at 4:15PM May 23, 2013Observed: 4095.02 ft at 4:30PM May 23, 2013Observed: 4095.04 ft at 4:45PM May 23, 2013Observed: 4095 ft at 5:00PM May 23, 2013Observed: 4095.02 ft at 5:15PM May 23, 2013Observed: 4095.02 ft at 5:30PM May 23, 2013Observed: 4095.04 ft at 5:45PM May 23, 2013Observed: 4095.01 ft at 6:00PM May 23, 2013Observed: 4095.06 ft at 6:15PM May 23, 2013Observed: 4094.99 ft at 6:30PM May 23, 2013Observed: 4094.99 ft at 6:45PM May 23, 2013Observed: 4095 ft at 7:00PM May 23, 2013Observed: 4095.04 ft at 7:15PM May 23, 2013Observed: 4095.01 ft at 7:30PM May 23, 2013Observed: 4095.01 ft at 7:45PM May 23, 2013Observed: 4094.99 ft at 8:00PM May 23, 2013Observed: 4095.02 ft at 8:15PM May 23, 2013Observed: 4095.01 ft at 8:30PM May 23, 2013Observed: 4095.02 ft at 8:45PM May 23, 2013Observed: 4095 ft at 9:00PM May 23, 2013Observed: 4095 ft at 9:15PM May 23, 2013Observed: 4095.01 ft at 9:30PM May 23, 2013Observed: 4095.03 ft at 9:45PM May 23, 2013Observed: 4095.03 ft at 10:00PM May 23, 2013Observed: 4095.01 ft at 10:15PM May 23, 2013Observed: 4095.03 ft at 10:30PM May 23, 2013Observed: 4095.02 ft at 10:45PM May 23, 2013Observed: 4095.02 ft at 11:00PM May 23, 2013Observed: 4095 ft at 11:15PM May 23, 2013Observed: 4095.01 ft at 11:30PM May 23, 2013Observed: 4094.98 ft at 11:45PM May 23, 2013Observed: 4095.02 ft at 12:00AM May 24, 2013Observed: 4095.03 ft at 12:15AM May 24, 2013Bureau of ReclamationKEYW4(plotting HPIRG) Graph Created (12:54AM May 24, 2013)ObservedLatest observed value: 4095.03 ft at 12:15 AM MDT 24-May-2013.
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About this graph
Tabular Data
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts are not available for the Belle Fourche River at Keyhole Reservoir. Only observed stages are available for this point.
Return to Area Map
Upstream Gauge - below Moorcroft Upstream Gauge Downstream Gauge Downstream Locations
Flood Categories (in feet)
Major Flood Stage:0
Moderate Flood Stage:0
Flood Stage:0
Action Stage:4099.3

Historical Crests
(1) 4,100.38 ft on 05/21/1978
(2) 4,099.45 ft on 03/17/2012
(3) 4,099.06 ft on 06/14/1999
(4) 4,098.78 ft on 03/07/1972
(5) 4,098.55 ft on 04/23/1997
Show More Historical Crests

Low Water Records
(1) 4,046.35 ft on 03/09/1955
Show More Low Water Records
Legend
Gauge Location
Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
4134 Dam crest elevation.
4128.7 Normal water surface elevation.
4111.5 Top of flood control.
4099.3 Spillway crest elevation. Top of active conservation capacity.
4051 Top of inactive conservation pool.
4036 Top of dead storage pool.
Photos
(1) Keyhole Dam
(2) Keyhole Reservoir
(3) Spillway
About This Location Collapse

Latitude: 44.381944° N, Longitude: 104.779167° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft Not Available Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)		 Elevation
(gauge height = flood stage)		 Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 4016 Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Other Data Sources:
Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Rapid City Weather Forecast Office
300 East Signal Drive
Rapid City, SD 57701-3800
(605) 341-7531
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Page last modified: 13-Mar-2013 6:26 PM 		Disclaimer
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