Skip Navigation Link weather.gov  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left
Bookmark and Share Navigation Bar End Cap

  
 
Hydrograph River at a Glance Download
Grand River at Shadehill Reservoir Pool (ft)Observed: 2271.73 ft at 7:30AM Jul 16, 2018Observed: 2271.73 ft at 7:45AM Jul 16, 2018Highest Observation: 2271.74 ft at 8:00AM Jul 16, 2018Highest Observation: 2271.74 ft at 8:15AM Jul 16, 2018Observed: 2271.73 ft at 8:30AM Jul 16, 2018Highest Observation: 2271.74 ft at 8:45AM Jul 16, 2018Observed: 2271.73 ft at 9:00AM Jul 16, 2018Observed: 2271.73 ft at 9:15AM Jul 16, 2018Observed: 2271.73 ft at 9:30AM Jul 16, 2018Highest Observation: 2271.74 ft at 9:45AM Jul 16, 2018Highest Observation: 2271.74 ft at 10:00AM Jul 16, 2018Observed: 2271.73 ft at 10:15AM Jul 16, 2018Observed: 2271.73 ft at 10:30AM Jul 16, 2018Observed: 2271.73 ft at 10:45AM Jul 16, 2018Highest Observation: 2271.74 ft at 11:00AM Jul 16, 2018Highest Observation: 2271.74 ft at 11:15AM Jul 16, 2018Observed: 2271.73 ft at 11:30AM Jul 16, 2018Observed: 2271.73 ft at 11:45AM Jul 16, 2018Observed: 2271.73 ft at 12:00PM Jul 16, 2018Highest Observation: 2271.74 ft at 12:15PM Jul 16, 2018Highest Observation: 2271.74 ft at 12:30PM Jul 16, 2018Observed: 2271.73 ft at 12:45PM Jul 16, 2018Highest Observation: 2271.74 ft at 1:00PM Jul 16, 2018Observed: 2271.73 ft at 1:15PM Jul 16, 2018Observed: 2271.73 ft at 1:30PM Jul 16, 2018Observed: 2271.73 ft at 1:45PM Jul 16, 2018Observed: 2271.73 ft at 2:00PM Jul 16, 2018Observed: 2271.73 ft at 2:15PM Jul 16, 2018Observed: 2271.73 ft at 2:30PM Jul 16, 2018Observed: 2271.73 ft at 2:45PM Jul 16, 2018Highest Observation: 2271.74 ft at 3:00PM Jul 16, 2018Highest Observation: 2271.74 ft at 3:15PM Jul 16, 2018Observed: 2271.73 ft at 3:30PM Jul 16, 2018Observed: 2271.73 ft at 3:45PM Jul 16, 2018Observed: 2271.73 ft at 4:00PM Jul 16, 2018Observed: 2271.73 ft at 4:15PM Jul 16, 2018Observed: 2271.73 ft at 4:30PM Jul 16, 2018Observed: 2271.73 ft at 4:45PM Jul 16, 2018Observed: 2271.73 ft at 5:00PM Jul 16, 2018Observed: 2271.73 ft at 5:15PM Jul 16, 2018Observed: 2271.73 ft at 5:30PM Jul 16, 2018Observed: 2271.73 ft at 5:45PM Jul 16, 2018Observed: 2271.73 ft at 6:00PM Jul 16, 2018Observed: 2271.73 ft at 6:15PM Jul 16, 2018Observed: 2271.73 ft at 6:30PM Jul 16, 2018Observed: 2271.73 ft at 6:45PM Jul 16, 2018Observed: 2271.73 ft at 7:00PM Jul 16, 2018Observed: 2271.73 ft at 7:15PM Jul 16, 2018Observed: 2271.73 ft at 7:30PM Jul 16, 2018Observed: 2271.73 ft at 7:45PM Jul 16, 2018Observed: 2271.73 ft at 8:00PM Jul 16, 2018Observed: 2271.72 ft at 8:15PM Jul 16, 2018Observed: 2271.72 ft at 8:30PM Jul 16, 2018Observed: 2271.73 ft at 8:45PM Jul 16, 2018Observed: 2271.72 ft at 9:00PM Jul 16, 2018Observed: 2271.73 ft at 9:15PM Jul 16, 2018Observed: 2271.72 ft at 9:30PM Jul 16, 2018Observed: 2271.73 ft at 9:45PM Jul 16, 2018Observed: 2271.72 ft at 10:00PM Jul 16, 2018Observed: 2271.72 ft at 10:15PM Jul 16, 2018Observed: 2271.72 ft at 10:30PM Jul 16, 2018Observed: 2271.72 ft at 10:45PM Jul 16, 2018Observed: 2271.72 ft at 11:00PM Jul 16, 2018Observed: 2271.72 ft at 11:15PM Jul 16, 2018Observed: 2271.72 ft at 11:30PM Jul 16, 2018Observed: 2271.73 ft at 11:45PM Jul 16, 2018Observed: 2271.72 ft at 12:00AM Jul 17, 2018Observed: 2271.72 ft at 12:15AM Jul 17, 2018Observed: 2271.72 ft at 12:30AM Jul 17, 2018Observed: 2271.72 ft at 12:45AM Jul 17, 2018Observed: 2271.72 ft at 1:00AM Jul 17, 2018Observed: 2271.72 ft at 1:15AM Jul 17, 2018Observed: 2271.72 ft at 1:30AM Jul 17, 2018Observed: 2271.72 ft at 1:45AM Jul 17, 2018Observed: 2271.72 ft at 2:00AM Jul 17, 2018Observed: 2271.72 ft at 2:15AM Jul 17, 2018Observed: 2271.72 ft at 2:30AM Jul 17, 2018Observed: 2271.72 ft at 2:45AM Jul 17, 2018Observed: 2271.72 ft at 3:00AM Jul 17, 2018Observed: 2271.72 ft at 3:15AM Jul 17, 2018Observed: 2271.72 ft at 3:30AM Jul 17, 2018Observed: 2271.71 ft at 3:45AM Jul 17, 2018Observed: 2271.72 ft at 4:00AM Jul 17, 2018Observed: 2271.71 ft at 4:15AM Jul 17, 2018Observed: 2271.72 ft at 4:30AM Jul 17, 2018Observed: 2271.72 ft at 4:45AM Jul 17, 2018Observed: 2271.71 ft at 5:00AM Jul 17, 2018Observed: 2271.71 ft at 5:15AM Jul 17, 2018Observed: 2271.72 ft at 5:30AM Jul 17, 2018Observed: 2271.71 ft at 5:45AM Jul 17, 2018Observed: 2271.71 ft at 6:00AM Jul 17, 2018Observed: 2271.71 ft at 6:15AM Jul 17, 2018Observed: 2271.71 ft at 6:30AM Jul 17, 2018Observed: 2271.71 ft at 6:45AM Jul 17, 2018Observed: 2271.71 ft at 7:00AM Jul 17, 2018Observed: 2271.71 ft at 7:15AM Jul 17, 2018Observed: 2271.7 ft at 7:30AM Jul 17, 2018Observed: 2271.71 ft at 7:45AM Jul 17, 2018Observed: 2271.71 ft at 8:00AM Jul 17, 2018Observed: 2271.71 ft at 8:15AM Jul 17, 2018Observed: 2271.71 ft at 8:30AM Jul 17, 2018Observed: 2271.71 ft at 8:45AM Jul 17, 2018Observed: 2271.71 ft at 9:00AM Jul 17, 2018Observed: 2271.71 ft at 9:15AM Jul 17, 2018Observed: 2271.71 ft at 9:30AM Jul 17, 2018Observed: 2271.71 ft at 9:45AM Jul 17, 2018Observed: 2271.71 ft at 10:00AM Jul 17, 2018Observed: 2271.71 ft at 10:15AM Jul 17, 2018Observed: 2271.71 ft at 10:30AM Jul 17, 2018Observed: 2271.71 ft at 10:45AM Jul 17, 2018Observed: 2271.71 ft at 11:00AM Jul 17, 2018Observed: 2271.71 ft at 11:15AM Jul 17, 2018Observed: 2271.71 ft at 11:30AM Jul 17, 2018Observed: 2271.71 ft at 11:45AM Jul 17, 2018Observed: 2271.71 ft at 12:00PM Jul 17, 2018Observed: 2271.71 ft at 12:15PM Jul 17, 2018Observed: 2271.71 ft at 12:30PM Jul 17, 2018Observed: 2271.71 ft at 12:45PM Jul 17, 2018Observed: 2271.71 ft at 1:00PM Jul 17, 2018Observed: 2271.71 ft at 1:15PM Jul 17, 2018Observed: 2271.71 ft at 1:30PM Jul 17, 2018Observed: 2271.7 ft at 1:45PM Jul 17, 2018Observed: 2271.7 ft at 2:00PM Jul 17, 2018Observed: 2271.71 ft at 2:15PM Jul 17, 2018Observed: 2271.71 ft at 2:30PM Jul 17, 2018Observed: 2271.7 ft at 2:45PM Jul 17, 2018Observed: 2271.71 ft at 3:00PM Jul 17, 2018Observed: 2271.7 ft at 3:15PM Jul 17, 2018Observed: 2271.7 ft at 3:30PM Jul 17, 2018Observed: 2271.7 ft at 3:45PM Jul 17, 2018Observed: 2271.71 ft at 4:00PM Jul 17, 2018Observed: 2271.71 ft at 4:15PM Jul 17, 2018Observed: 2271.7 ft at 4:30PM Jul 17, 2018Observed: 2271.7 ft at 4:45PM Jul 17, 2018Observed: 2271.7 ft at 5:00PM Jul 17, 2018Observed: 2271.7 ft at 5:15PM Jul 17, 2018Observed: 2271.7 ft at 5:30PM Jul 17, 2018Observed: 2271.7 ft at 5:45PM Jul 17, 2018Observed: 2271.7 ft at 6:00PM Jul 17, 2018Observed: 2271.7 ft at 6:15PM Jul 17, 2018Observed: 2271.7 ft at 6:30PM Jul 17, 2018Observed: 2271.7 ft at 6:45PM Jul 17, 2018Observed: 2271.7 ft at 7:00PM Jul 17, 2018Observed: 2271.7 ft at 7:15PM Jul 17, 2018Observed: 2271.7 ft at 7:30PM Jul 17, 2018Observed: 2271.7 ft at 7:45PM Jul 17, 2018Observed: 2271.7 ft at 8:00PM Jul 17, 2018Observed: 2271.7 ft at 8:15PM Jul 17, 2018Observed: 2271.7 ft at 8:30PM Jul 17, 2018Observed: 2271.69 ft at 8:45PM Jul 17, 2018Observed: 2271.7 ft at 9:00PM Jul 17, 2018Observed: 2271.7 ft at 9:15PM Jul 17, 2018Observed: 2271.69 ft at 9:30PM Jul 17, 2018Observed: 2271.69 ft at 9:45PM Jul 17, 2018Observed: 2271.69 ft at 10:00PM Jul 17, 2018Observed: 2271.69 ft at 10:15PM Jul 17, 2018Observed: 2271.69 ft at 10:30PM Jul 17, 2018Observed: 2271.7 ft at 10:45PM Jul 17, 2018Observed: 2271.7 ft at 11:00PM Jul 17, 2018Observed: 2271.69 ft at 11:15PM Jul 17, 2018Observed: 2271.69 ft at 11:30PM Jul 17, 2018Observed: 2271.69 ft at 11:45PM Jul 17, 2018Observed: 2271.7 ft at 12:00AM Jul 18, 2018Observed: 2271.7 ft at 12:15AM Jul 18, 2018Observed: 2271.7 ft at 12:30AM Jul 18, 2018Observed: 2271.69 ft at 12:45AM Jul 18, 2018Observed: 2271.7 ft at 1:00AM Jul 18, 2018Observed: 2271.69 ft at 1:15AM Jul 18, 2018Observed: 2271.69 ft at 1:30AM Jul 18, 2018Observed: 2271.69 ft at 1:45AM Jul 18, 2018Observed: 2271.7 ft at 2:00AM Jul 18, 2018Observed: 2271.69 ft at 2:15AM Jul 18, 2018Observed: 2271.69 ft at 2:30AM Jul 18, 2018Observed: 2271.69 ft at 2:45AM Jul 18, 2018Observed: 2271.69 ft at 3:00AM Jul 18, 2018Observed: 2271.69 ft at 3:15AM Jul 18, 2018Observed: 2271.69 ft at 3:30AM Jul 18, 2018Observed: 2271.69 ft at 3:45AM Jul 18, 2018Observed: 2271.69 ft at 4:00AM Jul 18, 2018Observed: 2271.69 ft at 4:15AM Jul 18, 2018Observed: 2271.69 ft at 4:30AM Jul 18, 2018Observed: 2271.69 ft at 4:45AM Jul 18, 2018Observed: 2271.69 ft at 5:00AM Jul 18, 2018Observed: 2271.7 ft at 5:15AM Jul 18, 2018Observed: 2271.69 ft at 5:30AM Jul 18, 2018Observed: 2271.7 ft at 5:45AM Jul 18, 2018Observed: 2271.69 ft at 6:00AM Jul 18, 2018Observed: 2271.7 ft at 6:15AM Jul 18, 2018Observed: 2271.7 ft at 6:30AM Jul 18, 2018Observed: 2271.69 ft at 6:45AM Jul 18, 2018Observed: 2271.69 ft at 7:00AM Jul 18, 2018Observed: 2271.7 ft at 7:15AM Jul 18, 2018Observed: 2271.7 ft at 7:30AM Jul 18, 2018Observed: 2271.7 ft at 7:45AM Jul 18, 2018Observed: 2271.7 ft at 8:00AM Jul 18, 2018Observed: 2271.7 ft at 8:15AM Jul 18, 2018Observed: 2271.69 ft at 8:30AM Jul 18, 2018Observed: 2271.7 ft at 8:45AM Jul 18, 2018Observed: 2271.7 ft at 9:00AM Jul 18, 2018Observed: 2271.7 ft at 9:15AM Jul 18, 2018Observed: 2271.7 ft at 9:30AM Jul 18, 2018Observed: 2271.7 ft at 9:45AM Jul 18, 2018Observed: 2271.7 ft at 10:00AM Jul 18, 2018Observed: 2271.7 ft at 10:15AM Jul 18, 2018Observed: 2271.7 ft at 10:30AM Jul 18, 2018Observed: 2271.71 ft at 10:45AM Jul 18, 2018Observed: 2271.7 ft at 11:00AM Jul 18, 2018Observed: 2271.71 ft at 11:15AM Jul 18, 2018Observed: 2271.71 ft at 11:30AM Jul 18, 2018Observed: 2271.71 ft at 11:45AM Jul 18, 2018Observed: 2271.71 ft at 12:00PM Jul 18, 2018Observed: 2271.71 ft at 12:15PM Jul 18, 2018Observed: 2271.71 ft at 12:30PM Jul 18, 2018Observed: 2271.71 ft at 12:45PM Jul 18, 2018Observed: 2271.71 ft at 1:00PM Jul 18, 2018Observed: 2271.71 ft at 1:15PM Jul 18, 2018Observed: 2271.71 ft at 1:30PM Jul 18, 2018Observed: 2271.72 ft at 1:45PM Jul 18, 2018Observed: 2271.72 ft at 2:00PM Jul 18, 2018Observed: 2271.72 ft at 2:15PM Jul 18, 2018Observed: 2271.72 ft at 2:30PM Jul 18, 2018Observed: 2271.72 ft at 2:45PM Jul 18, 2018Observed: 2271.72 ft at 3:00PM Jul 18, 2018Observed: 2271.72 ft at 3:15PM Jul 18, 2018Observed: 2271.72 ft at 3:30PM Jul 18, 2018Observed: 2271.72 ft at 3:45PM Jul 18, 2018Observed: 2271.72 ft at 4:00PM Jul 18, 2018Observed: 2271.72 ft at 4:15PM Jul 18, 2018Observed: 2271.72 ft at 4:30PM Jul 18, 2018Observed: 2271.72 ft at 4:45PM Jul 18, 2018Observed: 2271.72 ft at 5:00PM Jul 18, 2018Observed: 2271.72 ft at 5:15PM Jul 18, 2018Observed: 2271.72 ft at 5:30PM Jul 18, 2018Observed: 2271.72 ft at 5:45PM Jul 18, 2018Observed: 2271.72 ft at 6:00PM Jul 18, 2018Observed: 2271.73 ft at 6:15PM Jul 18, 2018Observed: 2271.72 ft at 6:30PM Jul 18, 2018Observed: 2271.73 ft at 6:45PM Jul 18, 2018Observed: 2271.72 ft at 7:00PM Jul 18, 2018Observed: 2271.72 ft at 7:15PM Jul 18, 2018Observed: 2271.72 ft at 7:30PM Jul 18, 2018Observed: 2271.72 ft at 7:45PM Jul 18, 2018Observed: 2271.73 ft at 8:00PM Jul 18, 2018Observed: 2271.73 ft at 8:15PM Jul 18, 2018Observed: 2271.72 ft at 8:30PM Jul 18, 2018Observed: 2271.73 ft at 8:45PM Jul 18, 2018Observed: 2271.73 ft at 9:00PM Jul 18, 2018Observed: 2271.72 ft at 9:15PM Jul 18, 2018Observed: 2271.72 ft at 9:30PM Jul 18, 2018Observed: 2271.73 ft at 9:45PM Jul 18, 2018Observed: 2271.73 ft at 10:00PM Jul 18, 2018Observed: 2271.72 ft at 10:15PM Jul 18, 2018Observed: 2271.72 ft at 10:30PM Jul 18, 2018Observed: 2271.72 ft at 10:45PM Jul 18, 2018Observed: 2271.72 ft at 11:00PM Jul 18, 2018Observed: 2271.72 ft at 11:15PM Jul 18, 2018Observed: 2271.72 ft at 11:30PM Jul 18, 2018Observed: 2271.72 ft at 11:45PM Jul 18, 2018Observed: 2271.73 ft at 12:00AM Jul 19, 2018Observed: 2271.72 ft at 12:15AM Jul 19, 2018Observed: 2271.73 ft at 12:30AM Jul 19, 2018Observed: 2271.73 ft at 12:45AM Jul 19, 2018Observed: 2271.73 ft at 1:00AM Jul 19, 2018Observed: 2271.73 ft at 1:15AM Jul 19, 2018Observed: 2271.73 ft at 1:30AM Jul 19, 2018Observed: 2271.73 ft at 1:45AM Jul 19, 2018Observed: 2271.73 ft at 2:00AM Jul 19, 2018Observed: 2271.73 ft at 2:15AM Jul 19, 2018Highest Observation: 2271.74 ft at 2:30AM Jul 19, 2018Observed: 2271.73 ft at 2:45AM Jul 19, 2018Observed: 2271.73 ft at 3:00AM Jul 19, 2018Observed: 2271.73 ft at 3:15AM Jul 19, 2018Observed: 2271.73 ft at 3:30AM Jul 19, 2018Observed: 2271.73 ft at 3:45AM Jul 19, 2018Observed: 2271.73 ft at 4:00AM Jul 19, 2018Observed: 2271.73 ft at 4:15AM Jul 19, 2018Observed: 2271.73 ft at 4:30AM Jul 19, 2018Highest Observation: 2271.74 ft at 4:45AM Jul 19, 2018Observed: 2271.73 ft at 5:00AM Jul 19, 2018Highest Observation: 2271.74 ft at 5:15AM Jul 19, 2018Observed: 2271.73 ft at 5:30AM Jul 19, 2018Observed: 2271.73 ft at 5:45AM Jul 19, 2018Observed: 2271.73 ft at 6:00AM Jul 19, 2018Observed: 2271.73 ft at 6:15AM Jul 19, 2018Bureau of ReclamationSHAS2(plotting HPIRG) Graph Created (7:22AM Jul 19, 2018)ObservedLatest observed value: 2271.73 ft at 6:15 AM MDT 19-Jul-2018.
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (MDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts are not available for the Grand River at Shadehill Reservoir. Only observed stages are available for this point.
Return to Area Map
Upstream Gauge - near Cash Upstream Gauge Downstream Gauge Downstream Gauge - near Little Eagle
Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 0
Flood Stage: 0
Action Stage: 2272
Low Stage (in feet): -9999

Historic Crests
(1) 2,297.86 ft on 04/10/1952
(2) 2,290.83 ft on 04/17/2009
(3) 2,282.42 ft on 04/02/1978
(4) 2,280.01 ft on 03/24/1997
(5) 2,276.65 ft on 03/22/2011
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 2,270.58 ft on 09/24/2013
(2) 2,272.05 ft on 10/07/2011
(3) 2,276.65 ft on 03/22/2011
(4) 2,273.29 ft on 05/26/2010
(5) 2,290.83 ft on 04/17/2009
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 2,257.30 ft on 03/05/2008
Show More Low Water Records

For more information on your flood risk go to www.floodsmart.gov.

Zoom Level:10
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
2318 Dam crest elevation.
2297.9 Near record flooding with similar flooding to what occurred in 1950 before the reservoir was completed.
2290.83 Reservoir elevation on April 17, 2009.
2280 Water begins to impact the road to the Shadehill Recreation Area.
2272 Water begins flowing into an uncontrolled outlet and is discharged downstream.
2260 Top of active conservation pool.
2253.4 Top of inactive conservation pool.
2250.8 Top of dead storage pool.
2220 Streambed elevation at dam axis.
Photos
(1) Shadehill Dam
(2) Looking downstream
(3) Shadehill Reservoir
(4) Spillway
About This Location Collapse

Latitude: 45.753333° N, Longitude: 102.203889° 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 Not Available Not Available 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
Ask Questions/Webmaster
Page last modified: 21-Dec-2016 5:19 PM
Disclaimer
Credits
Glossary
Privacy Policy
About Us
Career Opportunities