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ALERT: December 5th update on the status of the nationwide data transmission error preventing stream gauge data collected at affected locations from being displayed on the Advanced Hydrologic Prediction Services (AHPS) webpages. As of 11/08/2018, The USGS has restored all impacted operational stream gauges to transmitting status. The status map of gauge outages from other agencies is here. The outage map will be updated each Thursday. We apologize for the service interruption and hope to have the data restored as soon as possible.



Hydrograph River at a Glance Download
Grand River at Shadehill Reservoir Pool (ft)Observed: 2269.99 ft at 4:45PM Dec 07, 2018Observed: 2269.99 ft at 5:00PM Dec 07, 2018Observed: 2269.99 ft at 5:15PM Dec 07, 2018Observed: 2269.99 ft at 5:30PM Dec 07, 2018Observed: 2269.99 ft at 5:45PM Dec 07, 2018Observed: 2269.99 ft at 6:00PM Dec 07, 2018Observed: 2269.99 ft at 6:15PM Dec 07, 2018Observed: 2269.99 ft at 6:30PM Dec 07, 2018Highest Observation: 2270 ft at 6:45PM Dec 07, 2018Highest Observation: 2270 ft at 7:00PM Dec 07, 2018Observed: 2269.99 ft at 7:15PM Dec 07, 2018Highest Observation: 2270 ft at 7:30PM Dec 07, 2018Observed: 2269.99 ft at 7:45PM Dec 07, 2018Observed: 2269.99 ft at 8:00PM Dec 07, 2018Observed: 2269.99 ft at 8:15PM Dec 07, 2018Observed: 2269.99 ft at 8:30PM Dec 07, 2018Observed: 2269.99 ft at 8:45PM Dec 07, 2018Observed: 2269.99 ft at 9:00PM Dec 07, 2018Observed: 2269.99 ft at 9:15PM Dec 07, 2018Observed: 2269.99 ft at 9:30PM Dec 07, 2018Observed: 2269.99 ft at 9:45PM Dec 07, 2018Observed: 2269.99 ft at 10:00PM Dec 07, 2018Observed: 2269.99 ft at 10:15PM Dec 07, 2018Observed: 2269.99 ft at 10:30PM Dec 07, 2018Observed: 2269.99 ft at 10:45PM Dec 07, 2018Observed: 2269.99 ft at 11:00PM Dec 07, 2018Observed: 2269.99 ft at 11:15PM Dec 07, 2018Observed: 2269.99 ft at 11:30PM Dec 07, 2018Observed: 2269.99 ft at 11:45PM Dec 07, 2018Observed: 2269.99 ft at 12:00AM Dec 08, 2018Observed: 2269.99 ft at 12:15AM Dec 08, 2018Observed: 2269.99 ft at 12:30AM Dec 08, 2018Observed: 2269.99 ft at 12:45AM Dec 08, 2018Observed: 2269.99 ft at 1:00AM Dec 08, 2018Observed: 2269.99 ft at 1:15AM Dec 08, 2018Observed: 2269.98 ft at 1:30AM Dec 08, 2018Observed: 2269.99 ft at 1:45AM Dec 08, 2018Observed: 2269.99 ft at 2:00AM Dec 08, 2018Observed: 2269.98 ft at 2:15AM Dec 08, 2018Observed: 2269.98 ft at 2:30AM Dec 08, 2018Observed: 2269.98 ft at 2:45AM Dec 08, 2018Observed: 2269.98 ft at 3:00AM Dec 08, 2018Observed: 2269.98 ft at 3:15AM Dec 08, 2018Observed: 2269.98 ft at 3:30AM Dec 08, 2018Observed: 2269.98 ft at 3:45AM Dec 08, 2018Observed: 2269.98 ft at 4:00AM Dec 08, 2018Observed: 2269.98 ft at 4:15AM Dec 08, 2018Observed: 2269.98 ft at 4:30AM Dec 08, 2018Observed: 2269.99 ft at 4:45AM Dec 08, 2018Observed: 2269.98 ft at 5:00AM Dec 08, 2018Observed: 2269.98 ft at 5:15AM Dec 08, 2018Observed: 2269.99 ft at 5:30AM Dec 08, 2018Observed: 2269.99 ft at 5:45AM Dec 08, 2018Observed: 2269.99 ft at 6:00AM Dec 08, 2018Observed: 2269.99 ft at 6:15AM Dec 08, 2018Observed: 2269.98 ft at 6:30AM Dec 08, 2018Observed: 2269.98 ft at 6:45AM Dec 08, 2018Observed: 2269.99 ft at 7:00AM Dec 08, 2018Observed: 2269.99 ft at 7:15AM Dec 08, 2018Observed: 2269.99 ft at 7:30AM Dec 08, 2018Observed: 2269.99 ft at 7:45AM Dec 08, 2018Observed: 2269.99 ft at 8:00AM Dec 08, 2018Observed: 2269.99 ft at 8:15AM Dec 08, 2018Observed: 2269.99 ft at 8:30AM Dec 08, 2018Observed: 2269.99 ft at 8:45AM Dec 08, 2018Observed: 2269.99 ft at 9:00AM Dec 08, 2018Observed: 2269.99 ft at 9:15AM Dec 08, 2018Observed: 2269.99 ft at 9:30AM Dec 08, 2018Highest Observation: 2270 ft at 9:45AM Dec 08, 2018Observed: 2269.99 ft at 10:00AM Dec 08, 2018Observed: 2269.99 ft at 10:15AM Dec 08, 2018Observed: 2269.99 ft at 10:30AM Dec 08, 2018Observed: 2269.99 ft at 10:45AM Dec 08, 2018Highest Observation: 2270 ft at 11:00AM Dec 08, 2018Highest Observation: 2270 ft at 11:15AM Dec 08, 2018Observed: 2269.99 ft at 11:30AM Dec 08, 2018Observed: 2269.99 ft at 11:45AM Dec 08, 2018Observed: 2269.99 ft at 12:00PM Dec 08, 2018Observed: 2269.99 ft at 12:15PM Dec 08, 2018Observed: 2269.99 ft at 12:30PM Dec 08, 2018Observed: 2269.99 ft at 12:45PM Dec 08, 2018Observed: 2269.99 ft at 1:00PM Dec 08, 2018Observed: 2269.99 ft at 1:15PM Dec 08, 2018Observed: 2269.99 ft at 1:30PM Dec 08, 2018Observed: 2269.99 ft at 1:45PM Dec 08, 2018Observed: 2269.99 ft at 2:00PM Dec 08, 2018Highest Observation: 2270 ft at 2:15PM Dec 08, 2018Observed: 2269.99 ft at 2:30PM Dec 08, 2018Observed: 2269.99 ft at 2:45PM Dec 08, 2018Observed: 2269.99 ft at 3:00PM Dec 08, 2018Observed: 2269.99 ft at 3:15PM Dec 08, 2018Observed: 2269.99 ft at 3:30PM Dec 08, 2018Observed: 2269.99 ft at 3:45PM Dec 08, 2018Observed: 2269.99 ft at 4:00PM Dec 08, 2018Observed: 2269.99 ft at 4:15PM Dec 08, 2018Observed: 2269.99 ft at 4:30PM Dec 08, 2018Observed: 2269.99 ft at 4:45PM Dec 08, 2018Observed: 2269.99 ft at 5:00PM Dec 08, 2018Observed: 2269.99 ft at 5:15PM Dec 08, 2018Observed: 2269.99 ft at 5:30PM Dec 08, 2018Observed: 2269.99 ft at 5:45PM Dec 08, 2018Observed: 2269.99 ft at 6:00PM Dec 08, 2018Observed: 2269.99 ft at 6:15PM Dec 08, 2018Observed: 2269.99 ft at 6:30PM Dec 08, 2018Observed: 2269.99 ft at 6:45PM Dec 08, 2018Observed: 2269.99 ft at 7:00PM Dec 08, 2018Highest Observation: 2270 ft at 7:15PM Dec 08, 2018Observed: 2269.99 ft at 7:30PM Dec 08, 2018Observed: 2269.99 ft at 7:45PM Dec 08, 2018Highest Observation: 2270 ft at 8:00PM Dec 08, 2018Observed: 2269.99 ft at 8:15PM Dec 08, 2018Observed: 2269.99 ft at 8:30PM Dec 08, 2018Observed: 2269.99 ft at 8:45PM Dec 08, 2018Observed: 2269.99 ft at 9:00PM Dec 08, 2018Observed: 2269.99 ft at 9:15PM Dec 08, 2018Highest Observation: 2270 ft at 9:30PM Dec 08, 2018Observed: 2269.99 ft at 9:45PM Dec 08, 2018Observed: 2269.99 ft at 10:00PM Dec 08, 2018Highest Observation: 2270 ft at 10:15PM Dec 08, 2018Highest Observation: 2270 ft at 10:30PM Dec 08, 2018Observed: 2269.99 ft at 10:45PM Dec 08, 2018Highest Observation: 2270 ft at 11:00PM Dec 08, 2018Observed: 2269.99 ft at 11:15PM Dec 08, 2018Observed: 2269.99 ft at 11:30PM Dec 08, 2018Observed: 2269.99 ft at 11:45PM Dec 08, 2018Observed: 2269.99 ft at 12:00AM Dec 09, 2018Observed: 2269.99 ft at 12:15AM Dec 09, 2018Observed: 2269.99 ft at 12:30AM Dec 09, 2018Observed: 2269.99 ft at 12:45AM Dec 09, 2018Observed: 2269.99 ft at 1:00AM Dec 09, 2018Observed: 2269.99 ft at 1:15AM Dec 09, 2018Observed: 2269.99 ft at 1:30AM Dec 09, 2018Observed: 2269.99 ft at 1:45AM Dec 09, 2018Observed: 2269.99 ft at 2:00AM Dec 09, 2018Observed: 2269.99 ft at 2:15AM Dec 09, 2018Observed: 2269.99 ft at 2:30AM Dec 09, 2018Observed: 2269.99 ft at 2:45AM Dec 09, 2018Observed: 2269.99 ft at 3:00AM Dec 09, 2018Observed: 2269.99 ft at 3:15AM Dec 09, 2018Observed: 2269.99 ft at 3:30AM Dec 09, 2018Observed: 2269.99 ft at 3:45AM Dec 09, 2018Observed: 2269.99 ft at 4:00AM Dec 09, 2018Observed: 2269.99 ft at 4:15AM Dec 09, 2018Observed: 2269.99 ft at 4:30AM Dec 09, 2018Observed: 2269.99 ft at 4:45AM Dec 09, 2018Observed: 2269.99 ft at 5:00AM Dec 09, 2018Observed: 2269.99 ft at 5:15AM Dec 09, 2018Observed: 2269.99 ft at 5:30AM Dec 09, 2018Observed: 2269.99 ft at 5:45AM Dec 09, 2018Highest Observation: 2270 ft at 6:00AM Dec 09, 2018Observed: 2269.99 ft at 6:15AM Dec 09, 2018Observed: 2269.99 ft at 6:30AM Dec 09, 2018Observed: 2269.99 ft at 6:45AM Dec 09, 2018Highest Observation: 2270 ft at 7:00AM Dec 09, 2018Observed: 2269.99 ft at 7:15AM Dec 09, 2018Observed: 2269.99 ft at 7:30AM Dec 09, 2018Observed: 2269.99 ft at 7:45AM Dec 09, 2018Observed: 2269.99 ft at 8:00AM Dec 09, 2018Observed: 2269.99 ft at 8:15AM Dec 09, 2018Observed: 2269.99 ft at 8:30AM Dec 09, 2018Observed: 2269.99 ft at 8:45AM Dec 09, 2018Observed: 2269.99 ft at 9:00AM Dec 09, 2018Observed: 2269.99 ft at 9:15AM Dec 09, 2018Observed: 2269.99 ft at 9:30AM Dec 09, 2018Observed: 2269.99 ft at 9:45AM Dec 09, 2018Observed: 2269.99 ft at 10:00AM Dec 09, 2018Observed: 2269.99 ft at 10:15AM Dec 09, 2018Observed: 2269.99 ft at 10:30AM Dec 09, 2018Observed: 2269.99 ft at 10:45AM Dec 09, 2018Highest Observation: 2270 ft at 11:00AM Dec 09, 2018Observed: 2269.99 ft at 11:15AM Dec 09, 2018Observed: 2269.99 ft at 11:30AM Dec 09, 2018Observed: 2269.99 ft at 11:45AM Dec 09, 2018Observed: 2269.99 ft at 12:00PM Dec 09, 2018Observed: 2269.99 ft at 12:15PM Dec 09, 2018Observed: 2269.99 ft at 12:30PM Dec 09, 2018Highest Observation: 2270 ft at 12:45PM Dec 09, 2018Highest Observation: 2270 ft at 1:00PM Dec 09, 2018Observed: 2269.99 ft at 1:15PM Dec 09, 2018Observed: 2269.99 ft at 1:30PM Dec 09, 2018Highest Observation: 2270 ft at 1:45PM Dec 09, 2018Observed: 2269.99 ft at 2:00PM Dec 09, 2018Highest Observation: 2270 ft at 2:15PM Dec 09, 2018Observed: 2269.99 ft at 2:30PM Dec 09, 2018Observed: 2269.99 ft at 2:45PM Dec 09, 2018Highest Observation: 2270 ft at 3:00PM Dec 09, 2018Highest Observation: 2270 ft at 3:15PM Dec 09, 2018Observed: 2269.99 ft at 3:30PM Dec 09, 2018Highest Observation: 2270 ft at 3:45PM Dec 09, 2018Observed: 2269.99 ft at 4:00PM Dec 09, 2018Observed: 2269.99 ft at 4:15PM Dec 09, 2018Observed: 2269.99 ft at 4:30PM Dec 09, 2018Observed: 2269.99 ft at 4:45PM Dec 09, 2018Observed: 2269.99 ft at 5:00PM Dec 09, 2018Observed: 2269.99 ft at 5:15PM Dec 09, 2018Observed: 2269.99 ft at 5:30PM Dec 09, 2018Observed: 2269.99 ft at 5:45PM Dec 09, 2018Observed: 2269.99 ft at 6:00PM Dec 09, 2018Highest Observation: 2270 ft at 6:15PM Dec 09, 2018Observed: 2269.99 ft at 6:30PM Dec 09, 2018Observed: 2269.99 ft at 6:45PM Dec 09, 2018Highest Observation: 2270 ft at 7:00PM Dec 09, 2018Highest Observation: 2270 ft at 7:15PM Dec 09, 2018Highest Observation: 2270 ft at 7:30PM Dec 09, 2018Highest Observation: 2270 ft at 7:45PM Dec 09, 2018Observed: 2269.99 ft at 8:00PM Dec 09, 2018Observed: 2269.99 ft at 8:15PM Dec 09, 2018Observed: 2269.99 ft at 8:30PM Dec 09, 2018Highest Observation: 2270 ft at 8:45PM Dec 09, 2018Highest Observation: 2270 ft at 9:00PM Dec 09, 2018Highest Observation: 2270 ft at 9:15PM Dec 09, 2018Observed: 2269.99 ft at 9:30PM Dec 09, 2018Highest Observation: 2270 ft at 9:45PM Dec 09, 2018Highest Observation: 2270 ft at 10:00PM Dec 09, 2018Observed: 2269.99 ft at 10:15PM Dec 09, 2018Highest Observation: 2270 ft at 10:30PM Dec 09, 2018Highest Observation: 2270 ft at 10:45PM Dec 09, 2018Observed: 2269.99 ft at 11:00PM Dec 09, 2018Highest Observation: 2270 ft at 11:15PM Dec 09, 2018Observed: 2269.99 ft at 11:30PM Dec 09, 2018Observed: 2269.99 ft at 11:45PM Dec 09, 2018Highest Observation: 2270 ft at 12:00AM Dec 10, 2018Observed: 2269.99 ft at 12:15AM Dec 10, 2018Observed: 2269.99 ft at 12:30AM Dec 10, 2018Observed: 2269.99 ft at 12:45AM Dec 10, 2018Highest Observation: 2270 ft at 1:00AM Dec 10, 2018Highest Observation: 2270 ft at 1:15AM Dec 10, 2018Observed: 2269.99 ft at 1:30AM Dec 10, 2018Observed: 2269.99 ft at 1:45AM Dec 10, 2018Highest Observation: 2270 ft at 2:00AM Dec 10, 2018Highest Observation: 2270 ft at 2:15AM Dec 10, 2018Observed: 2269.99 ft at 2:30AM Dec 10, 2018Observed: 2269.99 ft at 2:45AM Dec 10, 2018Highest Observation: 2270 ft at 3:00AM Dec 10, 2018Observed: 2269.99 ft at 3:15AM Dec 10, 2018Highest Observation: 2270 ft at 3:30AM Dec 10, 2018Observed: 2269.99 ft at 3:45AM Dec 10, 2018Highest Observation: 2270 ft at 4:00AM Dec 10, 2018Highest Observation: 2270 ft at 4:15AM Dec 10, 2018Highest Observation: 2270 ft at 4:30AM Dec 10, 2018Observed: 2269.99 ft at 4:45AM Dec 10, 2018Observed: 2269.99 ft at 5:00AM Dec 10, 2018Observed: 2269.99 ft at 5:15AM Dec 10, 2018Highest Observation: 2270 ft at 5:30AM Dec 10, 2018Observed: 2269.99 ft at 5:45AM Dec 10, 2018Observed: 2269.99 ft at 6:00AM Dec 10, 2018Observed: 2269.99 ft at 6:15AM Dec 10, 2018Observed: 2269.99 ft at 6:30AM Dec 10, 2018Observed: 2269.99 ft at 6:45AM Dec 10, 2018Observed: 2269.99 ft at 7:00AM Dec 10, 2018Highest Observation: 2270 ft at 7:15AM Dec 10, 2018Observed: 2269.99 ft at 7:30AM Dec 10, 2018Observed: 2269.99 ft at 7:45AM Dec 10, 2018Highest Observation: 2270 ft at 8:00AM Dec 10, 2018Observed: 2269.99 ft at 8:15AM Dec 10, 2018Observed: 2269.99 ft at 8:30AM Dec 10, 2018Observed: 2269.99 ft at 8:45AM Dec 10, 2018Highest Observation: 2270 ft at 9:00AM Dec 10, 2018Observed: 2269.99 ft at 9:15AM Dec 10, 2018Observed: 2269.99 ft at 9:30AM Dec 10, 2018Highest Observation: 2270 ft at 9:45AM Dec 10, 2018Observed: 2269.99 ft at 10:00AM Dec 10, 2018Observed: 2269.99 ft at 10:15AM Dec 10, 2018Highest Observation: 2270 ft at 10:30AM Dec 10, 2018Observed: 2269.99 ft at 10:45AM Dec 10, 2018Observed: 2269.99 ft at 11:00AM Dec 10, 2018Highest Observation: 2270 ft at 11:15AM Dec 10, 2018Observed: 2269.99 ft at 11:30AM Dec 10, 2018Observed: 2269.99 ft at 11:45AM Dec 10, 2018Observed: 2269.99 ft at 12:00PM Dec 10, 2018Highest Observation: 2270 ft at 12:15PM Dec 10, 2018Highest Observation: 2270 ft at 12:30PM Dec 10, 2018Observed: 2269.99 ft at 12:45PM Dec 10, 2018Observed: 2269.99 ft at 1:00PM Dec 10, 2018Observed: 2269.99 ft at 1:15PM Dec 10, 2018Observed: 2269.99 ft at 1:30PM Dec 10, 2018Observed: 2269.99 ft at 1:45PM Dec 10, 2018Highest Observation: 2270 ft at 2:00PM Dec 10, 2018Observed: 2269.99 ft at 2:15PM Dec 10, 2018Observed: 2269.99 ft at 2:30PM Dec 10, 2018Observed: 2269.99 ft at 2:45PM Dec 10, 2018Observed: 2269.99 ft at 3:00PM Dec 10, 2018Observed: 2269.99 ft at 3:15PM Dec 10, 2018Observed: 2269.99 ft at 3:30PM Dec 10, 2018Observed: 2269.99 ft at 3:45PM Dec 10, 2018Observed: 2269.99 ft at 4:00PM Dec 10, 2018Highest Observation: 2270 ft at 4:15PM Dec 10, 2018Bureau of ReclamationSHAS2(plotting HPIRG) Graph Created (4:38PM Dec 10, 2018)ObservedLatest observed value: 2270 ft at 4:15 PM MST 10-Dec-2018.
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About this graph
Tabular Data (UTC)
Tabular Data (MST)
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) 2,272.24 ft on 05/24/2018
(2) 2,266.31 ft on 05/01/2017
(3) 2,270.40 ft on 10/01/2015
(4) 2,271.91 ft on 10/05/2014
(5) 2,274.92 ft on 03/15/2014
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:

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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: 21-Dec-2016 10:36 PM
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