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Hydrograph River at a Glance Download
Keyapaha River near Keyapaha Stage (ft)Flow (kcfs)Observed: 4.45 ft at 3:45AM Oct 22, 2021Observed: 4.45 ft at 4:00AM Oct 22, 2021Observed: 4.45 ft at 4:15AM Oct 22, 2021Observed: 4.46 ft at 4:30AM Oct 22, 2021Observed: 4.45 ft at 4:45AM Oct 22, 2021Observed: 4.45 ft at 5:00AM Oct 22, 2021Observed: 4.46 ft at 5:15AM Oct 22, 2021Observed: 4.46 ft at 5:30AM Oct 22, 2021Observed: 4.46 ft at 5:45AM Oct 22, 2021Observed: 4.45 ft at 6:00AM Oct 22, 2021Observed: 4.46 ft at 6:15AM Oct 22, 2021Observed: 4.46 ft at 6:30AM Oct 22, 2021Observed: 4.46 ft at 6:45AM Oct 22, 2021Observed: 4.46 ft at 7:00AM Oct 22, 2021Observed: 4.46 ft at 7:15AM Oct 22, 2021Observed: 4.46 ft at 7:30AM Oct 22, 2021Observed: 4.46 ft at 7:45AM Oct 22, 2021Observed: 4.46 ft at 8:00AM Oct 22, 2021Observed: 4.46 ft at 8:15AM Oct 22, 2021Observed: 4.46 ft at 9:30AM Oct 22, 2021Observed: 4.46 ft at 9:45AM Oct 22, 2021Observed: 4.47 ft at 10:00AM Oct 22, 2021Observed: 4.47 ft at 10:15AM Oct 22, 2021Observed: 4.47 ft at 10:30AM Oct 22, 2021Highest Observation: 4.49 ft at 10:45AM Oct 22, 2021Observed: 4.47 ft at 11:00AM Oct 22, 2021Observed: 4.46 ft at 11:15AM Oct 22, 2021Observed: 4.47 ft at 11:30AM Oct 22, 2021Observed: 4.47 ft at 11:45AM Oct 22, 2021Observed: 4.47 ft at 12:00PM Oct 22, 2021Observed: 4.47 ft at 12:15PM Oct 22, 2021Observed: 4.47 ft at 12:30PM Oct 22, 2021Observed: 4.47 ft at 12:45PM Oct 22, 2021Observed: 4.47 ft at 1:00PM Oct 22, 2021Observed: 4.47 ft at 1:15PM Oct 22, 2021Observed: 4.47 ft at 1:30PM Oct 22, 2021Observed: 4.48 ft at 1:45PM Oct 22, 2021Observed: 4.47 ft at 2:00PM Oct 22, 2021Observed: 4.47 ft at 2:15PM Oct 22, 2021Observed: 4.46 ft at 2:30PM Oct 22, 2021Observed: 4.47 ft at 2:45PM Oct 22, 2021Observed: 4.47 ft at 3:00PM Oct 22, 2021Observed: 4.46 ft at 3:15PM Oct 22, 2021Observed: 4.47 ft at 3:30PM Oct 22, 2021Observed: 4.47 ft at 3:45PM Oct 22, 2021Observed: 4.47 ft at 4:00PM Oct 22, 2021Observed: 4.47 ft at 4:15PM Oct 22, 2021Observed: 4.47 ft at 4:30PM Oct 22, 2021Observed: 4.47 ft at 4:45PM Oct 22, 2021Observed: 4.47 ft at 5:00PM Oct 22, 2021Observed: 4.46 ft at 5:15PM Oct 22, 2021Observed: 4.46 ft at 5:30PM Oct 22, 2021Observed: 4.46 ft at 5:45PM Oct 22, 2021Observed: 4.46 ft at 6:00PM Oct 22, 2021Observed: 4.46 ft at 6:15PM Oct 22, 2021Observed: 4.46 ft at 6:30PM Oct 22, 2021Observed: 4.46 ft at 6:45PM Oct 22, 2021Observed: 4.46 ft at 7:00PM Oct 22, 2021Observed: 4.46 ft at 7:15PM Oct 22, 2021Observed: 4.46 ft at 7:30PM Oct 22, 2021Observed: 4.46 ft at 7:45PM Oct 22, 2021Observed: 4.45 ft at 8:00PM Oct 22, 2021Observed: 4.45 ft at 8:15PM Oct 22, 2021Observed: 4.45 ft at 8:30PM Oct 22, 2021Observed: 4.45 ft at 8:45PM Oct 22, 2021Observed: 4.46 ft at 9:00PM Oct 22, 2021Observed: 4.45 ft at 9:15PM Oct 22, 2021Observed: 4.46 ft at 9:30PM Oct 22, 2021Observed: 4.45 ft at 9:45PM Oct 22, 2021Observed: 4.45 ft at 10:00PM Oct 22, 2021Observed: 4.45 ft at 10:15PM Oct 22, 2021Observed: 4.45 ft at 10:30PM Oct 22, 2021Observed: 4.45 ft at 10:45PM Oct 22, 2021Observed: 4.45 ft at 11:00PM Oct 22, 2021Observed: 4.45 ft at 11:15PM Oct 22, 2021Observed: 4.45 ft at 11:30PM Oct 22, 2021Observed: 4.45 ft at 11:45PM Oct 22, 2021Observed: 4.45 ft at 12:00AM Oct 23, 2021Observed: 4.45 ft at 12:15AM Oct 23, 2021Observed: 4.45 ft at 12:30AM Oct 23, 2021Observed: 4.44 ft at 12:45AM Oct 23, 2021Observed: 4.45 ft at 1:00AM Oct 23, 2021Observed: 4.44 ft at 1:15AM Oct 23, 2021Observed: 4.45 ft at 1:30AM Oct 23, 2021Observed: 4.45 ft at 1:45AM Oct 23, 2021Observed: 4.44 ft at 2:00AM Oct 23, 2021Observed: 4.44 ft at 2:15AM Oct 23, 2021Observed: 4.44 ft at 2:30AM Oct 23, 2021Observed: 4.44 ft at 2:45AM Oct 23, 2021Observed: 4.45 ft at 3:00AM Oct 23, 2021Observed: 4.45 ft at 3:15AM Oct 23, 2021Observed: 4.45 ft at 3:30AM Oct 23, 2021Observed: 4.45 ft at 3:45AM Oct 23, 2021Observed: 4.44 ft at 4:00AM Oct 23, 2021Observed: 4.44 ft at 4:15AM Oct 23, 2021Observed: 4.45 ft at 4:30AM Oct 23, 2021Observed: 4.44 ft at 4:45AM Oct 23, 2021Observed: 4.45 ft at 5:00AM Oct 23, 2021Observed: 4.45 ft at 5:15AM Oct 23, 2021Observed: 4.45 ft at 5:30AM Oct 23, 2021Observed: 4.45 ft at 5:45AM Oct 23, 2021Observed: 4.45 ft at 6:00AM Oct 23, 2021Observed: 4.45 ft at 6:15AM Oct 23, 2021Observed: 4.45 ft at 6:30AM Oct 23, 2021Observed: 4.45 ft at 6:45AM Oct 23, 2021Observed: 4.45 ft at 7:00AM Oct 23, 2021Observed: 4.45 ft at 7:15AM Oct 23, 2021Observed: 4.45 ft at 7:30AM Oct 23, 2021Observed: 4.45 ft at 7:45AM Oct 23, 2021Observed: 4.45 ft at 8:00AM Oct 23, 2021Observed: 4.45 ft at 8:15AM Oct 23, 2021Observed: 4.45 ft at 8:30AM Oct 23, 2021Observed: 4.45 ft at 8:45AM Oct 23, 2021Observed: 4.44 ft at 9:00AM Oct 23, 2021Observed: 4.44 ft at 9:15AM Oct 23, 2021Observed: 4.45 ft at 9:30AM Oct 23, 2021Observed: 4.45 ft at 9:45AM Oct 23, 2021Observed: 4.45 ft at 10:00AM Oct 23, 2021Observed: 4.45 ft at 10:15AM Oct 23, 2021Observed: 4.45 ft at 10:30AM Oct 23, 2021Observed: 4.46 ft at 10:45AM Oct 23, 2021Observed: 4.45 ft at 11:00AM Oct 23, 2021Observed: 4.46 ft at 11:15AM Oct 23, 2021Observed: 4.45 ft at 11:30AM Oct 23, 2021Observed: 4.46 ft at 11:45AM Oct 23, 2021Observed: 4.46 ft at 12:00PM Oct 23, 2021Observed: 4.46 ft at 12:15PM Oct 23, 2021Observed: 4.46 ft at 12:30PM Oct 23, 2021Observed: 4.46 ft at 12:45PM Oct 23, 2021Observed: 4.45 ft at 1:00PM Oct 23, 2021Observed: 4.46 ft at 1:15PM Oct 23, 2021Observed: 4.45 ft at 1:30PM Oct 23, 2021Observed: 4.46 ft at 1:45PM Oct 23, 2021Observed: 4.46 ft at 2:00PM Oct 23, 2021Observed: 4.46 ft at 2:15PM Oct 23, 2021Observed: 4.46 ft at 2:30PM Oct 23, 2021Observed: 4.45 ft at 2:45PM Oct 23, 2021Observed: 4.45 ft at 3:00PM Oct 23, 2021Observed: 4.45 ft at 3:15PM Oct 23, 2021Observed: 4.45 ft at 3:30PM Oct 23, 2021Observed: 4.45 ft at 3:45PM Oct 23, 2021Observed: 4.45 ft at 4:00PM Oct 23, 2021Observed: 4.45 ft at 4:15PM Oct 23, 2021Observed: 4.45 ft at 4:30PM Oct 23, 2021Observed: 4.45 ft at 4:45PM Oct 23, 2021Observed: 4.45 ft at 5:00PM Oct 23, 2021Observed: 4.45 ft at 5:15PM Oct 23, 2021Observed: 4.45 ft at 5:30PM Oct 23, 2021Observed: 4.46 ft at 5:45PM Oct 23, 2021Observed: 4.45 ft at 6:00PM Oct 23, 2021Observed: 4.45 ft at 6:15PM Oct 23, 2021Observed: 4.45 ft at 6:30PM Oct 23, 2021Observed: 4.44 ft at 6:45PM Oct 23, 2021Observed: 4.44 ft at 7:00PM Oct 23, 2021Observed: 4.44 ft at 7:15PM Oct 23, 2021Observed: 4.44 ft at 7:30PM Oct 23, 2021Observed: 4.44 ft at 7:45PM Oct 23, 2021Observed: 4.44 ft at 8:00PM Oct 23, 2021Observed: 4.45 ft at 8:15PM Oct 23, 2021Observed: 4.44 ft at 8:30PM Oct 23, 2021Observed: 4.45 ft at 8:45PM Oct 23, 2021Observed: 4.44 ft at 9:00PM Oct 23, 2021Observed: 4.44 ft at 9:15PM Oct 23, 2021Observed: 4.44 ft at 9:30PM Oct 23, 2021Observed: 4.44 ft at 9:45PM Oct 23, 2021Observed: 4.44 ft at 10:00PM Oct 23, 2021Observed: 4.44 ft at 10:15PM Oct 23, 2021Observed: 4.44 ft at 10:30PM Oct 23, 2021Observed: 4.44 ft at 10:45PM Oct 23, 2021Observed: 4.44 ft at 11:00PM Oct 23, 2021Observed: 4.44 ft at 11:15PM Oct 23, 2021Observed: 4.44 ft at 11:30PM Oct 23, 2021Observed: 4.44 ft at 11:45PM Oct 23, 2021Observed: 4.44 ft at 12:00AM Oct 24, 2021Observed: 4.44 ft at 12:15AM Oct 24, 2021Observed: 4.44 ft at 12:30AM Oct 24, 2021Observed: 4.44 ft at 12:45AM Oct 24, 2021Observed: 4.44 ft at 1:00AM Oct 24, 2021Observed: 4.44 ft at 1:15AM Oct 24, 2021Observed: 4.44 ft at 1:30AM Oct 24, 2021Observed: 4.44 ft at 1:45AM Oct 24, 2021Observed: 4.44 ft at 2:00AM Oct 24, 2021Observed: 4.44 ft at 2:15AM Oct 24, 2021Observed: 4.44 ft at 2:30AM Oct 24, 2021Observed: 4.44 ft at 2:45AM Oct 24, 2021Observed: 4.44 ft at 3:00AM Oct 24, 2021Observed: 4.44 ft at 3:15AM Oct 24, 2021Observed: 4.44 ft at 3:30AM Oct 24, 2021Observed: 4.45 ft at 3:45AM Oct 24, 2021Observed: 4.44 ft at 4:00AM Oct 24, 2021Observed: 4.44 ft at 4:15AM Oct 24, 2021Observed: 4.44 ft at 4:30AM Oct 24, 2021Observed: 4.44 ft at 4:45AM Oct 24, 2021Observed: 4.44 ft at 5:00AM Oct 24, 2021Observed: 4.44 ft at 5:15AM Oct 24, 2021Observed: 4.44 ft at 5:30AM Oct 24, 2021Observed: 4.44 ft at 5:45AM Oct 24, 2021Observed: 4.44 ft at 6:00AM Oct 24, 2021Observed: 4.44 ft at 6:15AM Oct 24, 2021Observed: 4.44 ft at 6:30AM Oct 24, 2021Observed: 4.44 ft at 6:45AM Oct 24, 2021Observed: 4.44 ft at 7:00AM Oct 24, 2021Observed: 4.44 ft at 7:15AM Oct 24, 2021Observed: 4.44 ft at 7:30AM Oct 24, 2021Observed: 4.44 ft at 7:45AM Oct 24, 2021Observed: 4.44 ft at 8:00AM Oct 24, 2021Observed: 4.44 ft at 8:15AM Oct 24, 2021Observed: 4.45 ft at 8:30AM Oct 24, 2021Observed: 4.44 ft at 8:45AM Oct 24, 2021Observed: 4.44 ft at 9:00AM Oct 24, 2021Observed: 4.45 ft at 9:15AM Oct 24, 2021Observed: 4.45 ft at 9:30AM Oct 24, 2021Observed: 4.45 ft at 9:45AM Oct 24, 2021Observed: 4.44 ft at 10:00AM Oct 24, 2021Observed: 4.45 ft at 10:15AM Oct 24, 2021Observed: 4.45 ft at 10:30AM Oct 24, 2021Observed: 4.44 ft at 10:45AM Oct 24, 2021Observed: 4.44 ft at 11:00AM Oct 24, 2021Observed: 4.44 ft at 11:15AM Oct 24, 2021Observed: 4.44 ft at 11:30AM Oct 24, 2021Observed: 4.45 ft at 11:45AM Oct 24, 2021Observed: 4.45 ft at 12:00PM Oct 24, 2021Observed: 4.46 ft at 12:15PM Oct 24, 2021Observed: 4.44 ft at 12:30PM Oct 24, 2021Observed: 4.45 ft at 12:45PM Oct 24, 2021Observed: 4.45 ft at 1:00PM Oct 24, 2021Observed: 4.45 ft at 1:15PM Oct 24, 2021Observed: 4.45 ft at 1:30PM Oct 24, 2021Observed: 4.45 ft at 1:45PM Oct 24, 2021Observed: 4.45 ft at 2:00PM Oct 24, 2021Observed: 4.46 ft at 2:15PM Oct 24, 2021Observed: 4.45 ft at 2:30PM Oct 24, 2021Observed: 4.45 ft at 2:45PM Oct 24, 2021Observed: 4.44 ft at 3:00PM Oct 24, 2021Observed: 4.45 ft at 3:15PM Oct 24, 2021Observed: 4.45 ft at 3:30PM Oct 24, 2021Observed: 4.44 ft at 3:45PM Oct 24, 2021Observed: 4.45 ft at 4:00PM Oct 24, 2021Observed: 4.45 ft at 4:15PM Oct 24, 2021Observed: 4.45 ft at 4:30PM Oct 24, 2021Observed: 4.46 ft at 4:45PM Oct 24, 2021Observed: 4.45 ft at 5:00PM Oct 24, 2021Observed: 4.45 ft at 5:15PM Oct 24, 2021Observed: 4.46 ft at 5:30PM Oct 24, 2021Observed: 4.45 ft at 5:45PM Oct 24, 2021Observed: 4.45 ft at 6:00PM Oct 24, 2021Observed: 4.44 ft at 6:15PM Oct 24, 2021Observed: 4.45 ft at 6:30PM Oct 24, 2021Observed: 4.45 ft at 6:45PM Oct 24, 2021Observed: 4.45 ft at 7:00PM Oct 24, 2021Observed: 4.44 ft at 7:15PM Oct 24, 2021Observed: 4.45 ft at 7:30PM Oct 24, 2021Observed: 4.47 ft at 7:45PM Oct 24, 2021Observed: 4.45 ft at 8:00PM Oct 24, 2021Observed: 4.45 ft at 8:15PM Oct 24, 2021Observed: 4.45 ft at 8:30PM Oct 24, 2021Observed: 4.45 ft at 8:45PM Oct 24, 2021Observed: 4.45 ft at 9:00PM Oct 24, 2021Observed: 4.45 ft at 9:15PM Oct 24, 2021Observed: 4.45 ft at 9:30PM Oct 24, 2021Observed: 4.45 ft at 9:45PM Oct 24, 2021Observed: 4.45 ft at 10:00PM Oct 24, 2021Observed: 4.45 ft at 10:15PM Oct 24, 2021Observed: 4.45 ft at 10:30PM Oct 24, 2021Observed: 4.45 ft at 10:45PM Oct 24, 2021Observed: 4.45 ft at 11:00PM Oct 24, 2021Observed: 4.45 ft at 11:15PM Oct 24, 2021Observed: 4.44 ft at 11:30PM Oct 24, 2021Observed: 4.45 ft at 11:45PM Oct 24, 2021Observed: 4.44 ft at 12:00AM Oct 25, 2021Observed: 4.44 ft at 12:15AM Oct 25, 2021Observed: 4.44 ft at 12:30AM Oct 25, 2021Observed: 4.44 ft at 12:45AM Oct 25, 2021Observed: 4.44 ft at 1:00AM Oct 25, 2021Observed: 4.45 ft at 1:15AM Oct 25, 2021Observed: 4.45 ft at 1:30AM Oct 25, 2021Observed: 4.45 ft at 1:45AM Oct 25, 2021Observed: 4.46 ft at 2:00AM Oct 25, 2021Observed: 4.45 ft at 2:15AM Oct 25, 2021USGS--Water Resources of the United StatesPAHS2(plotting HGIRG) Graph Created (3:38AM Oct 25, 2021)ObservedLatest observed value: 4.45 ft at 2:15 AM CDT 25-Oct-2021. Flood Stage is 10 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: NGVD29
Metadata
NOTE: Forecasts are not available for the Keyapaha River near Keyapaha. Only observed stages are available for this point.
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Downstream Gauge Downstream Gauge - at Wewala
Flood Categories (in feet)
Major Flood Stage: 12
Moderate Flood Stage: 11
Flood Stage: 10
Action Stage: 8
Low Stage (in feet): -9999

Historic Crests
(1) 13.70 ft on 04/01/1952
(2) 11.36 ft on 03/23/2019
(3) 11.29 ft on 02/18/1997
(4) 9.73 ft on 03/12/2011
(5) 9.48 ft on 02/20/1997
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 5.95 ft on 07/25/2020
(2) 6.91 ft on 02/04/2020
(3) 11.36 ft on 03/23/2019
(4) 8.21 ft on 04/21/2018
(5) 8.65 ft on 03/04/2018
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 2.70 ft on 09/12/2000
Show More Low Water Records

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:14
KML Image
Gauge LocationGauge Map Marker
 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
If you notice any errors in the below information, please contact our Webmaster
10 Flood stage. Flooding of yards and agricultural land along the river.
About This Location Collapse

Latitude: 43.129167° N, Longitude: 100.106667° W, Horizontal Datum: NAD27

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 10 ft 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 2230 ft 2240 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:
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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