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Hydrograph River at a Glance Download
Grace Coolidge Creek near Custer Stage (ft)Flow (kcfs)Observed: 7.1 ft at 6:45AM Jun 01, 2020Observed: 7.1 ft at 7:00AM Jun 01, 2020Highest Observation: 7.11 ft at 7:15AM Jun 01, 2020Observed: 7.1 ft at 7:30AM Jun 01, 2020Observed: 7.1 ft at 7:45AM Jun 01, 2020Observed: 7.1 ft at 8:00AM Jun 01, 2020Observed: 7.1 ft at 8:15AM Jun 01, 2020Observed: 7.1 ft at 8:30AM Jun 01, 2020Observed: 7.1 ft at 8:45AM Jun 01, 2020Observed: 7.1 ft at 9:00AM Jun 01, 2020Observed: 7.1 ft at 9:15AM Jun 01, 2020Observed: 7.1 ft at 9:30AM Jun 01, 2020Observed: 7.09 ft at 9:45AM Jun 01, 2020Observed: 7.1 ft at 10:00AM Jun 01, 2020Observed: 7.09 ft at 10:15AM Jun 01, 2020Observed: 7.1 ft at 10:30AM Jun 01, 2020Observed: 7.1 ft at 10:45AM Jun 01, 2020Observed: 7.09 ft at 11:00AM Jun 01, 2020Observed: 7.09 ft at 11:15AM Jun 01, 2020Observed: 7.09 ft at 11:30AM Jun 01, 2020Observed: 7.09 ft at 11:45AM Jun 01, 2020Observed: 7.09 ft at 12:00PM Jun 01, 2020Observed: 7.08 ft at 12:15PM Jun 01, 2020Observed: 7.08 ft at 12:30PM Jun 01, 2020Observed: 7.08 ft at 12:45PM Jun 01, 2020Observed: 7.09 ft at 1:00PM Jun 01, 2020Observed: 7.09 ft at 1:15PM Jun 01, 2020Observed: 7.08 ft at 1:30PM Jun 01, 2020Observed: 7.08 ft at 1:45PM Jun 01, 2020Observed: 7.08 ft at 2:00PM Jun 01, 2020Observed: 7.08 ft at 2:15PM Jun 01, 2020Observed: 7.08 ft at 2:30PM Jun 01, 2020Observed: 7.08 ft at 2:45PM Jun 01, 2020Observed: 7.08 ft at 3:00PM Jun 01, 2020Observed: 7.08 ft at 3:15PM Jun 01, 2020Observed: 7.08 ft at 3:30PM Jun 01, 2020Observed: 7.08 ft at 3:45PM Jun 01, 2020Observed: 7.08 ft at 4:00PM Jun 01, 2020Observed: 7.08 ft at 4:15PM Jun 01, 2020Observed: 7.08 ft at 4:30PM Jun 01, 2020Observed: 7.08 ft at 4:45PM Jun 01, 2020Observed: 7.08 ft at 5:00PM Jun 01, 2020Observed: 7.08 ft at 5:15PM Jun 01, 2020Observed: 7.08 ft at 5:30PM Jun 01, 2020Observed: 7.08 ft at 5:45PM Jun 01, 2020Observed: 7.07 ft at 6:00PM Jun 01, 2020Observed: 7.08 ft at 6:15PM Jun 01, 2020Observed: 7.07 ft at 6:30PM Jun 01, 2020Observed: 7.08 ft at 6:45PM Jun 01, 2020Observed: 7.07 ft at 7:00PM Jun 01, 2020Observed: 7.07 ft at 7:15PM Jun 01, 2020Observed: 7.07 ft at 7:30PM Jun 01, 2020Observed: 7.07 ft at 7:45PM Jun 01, 2020Observed: 7.07 ft at 8:00PM Jun 01, 2020Observed: 7.07 ft at 8:15PM Jun 01, 2020Observed: 7.07 ft at 8:30PM Jun 01, 2020Observed: 7.07 ft at 8:45PM Jun 01, 2020Observed: 7.07 ft at 9:00PM Jun 01, 2020Observed: 7.07 ft at 9:15PM Jun 01, 2020Observed: 7.07 ft at 9:30PM Jun 01, 2020Observed: 7.07 ft at 9:31PM Jun 01, 2020Observed: 7.07 ft at 9:45PM Jun 01, 2020Observed: 7.07 ft at 9:46PM Jun 01, 2020Observed: 7.07 ft at 10:00PM Jun 01, 2020Observed: 7.07 ft at 10:01PM Jun 01, 2020Observed: 7.07 ft at 10:15PM Jun 01, 2020Observed: 7.07 ft at 10:30PM Jun 01, 2020Observed: 7.07 ft at 10:45PM Jun 01, 2020Observed: 7.07 ft at 11:00PM Jun 01, 2020Observed: 7.07 ft at 11:15PM Jun 01, 2020Observed: 7.07 ft at 11:30PM Jun 01, 2020Observed: 7.07 ft at 11:45PM Jun 01, 2020Observed: 7.07 ft at 12:00AM Jun 02, 2020Observed: 7.07 ft at 12:15AM Jun 02, 2020Observed: 7.07 ft at 12:30AM Jun 02, 2020Observed: 7.07 ft at 12:45AM Jun 02, 2020Observed: 7.06 ft at 1:00AM Jun 02, 2020Observed: 7.06 ft at 1:15AM Jun 02, 2020Observed: 7.07 ft at 1:30AM Jun 02, 2020Observed: 7.06 ft at 1:45AM Jun 02, 2020Observed: 7.07 ft at 2:00AM Jun 02, 2020Observed: 7.06 ft at 2:15AM Jun 02, 2020Observed: 7.06 ft at 2:30AM Jun 02, 2020Observed: 7.07 ft at 2:45AM Jun 02, 2020Observed: 7.07 ft at 3:00AM Jun 02, 2020Observed: 7.07 ft at 3:15AM Jun 02, 2020Observed: 7.07 ft at 3:30AM Jun 02, 2020Observed: 7.06 ft at 3:45AM Jun 02, 2020Observed: 7.07 ft at 4:00AM Jun 02, 2020Observed: 7.06 ft at 4:15AM Jun 02, 2020Observed: 7.07 ft at 4:30AM Jun 02, 2020Observed: 7.07 ft at 4:45AM Jun 02, 2020Observed: 7.07 ft at 5:00AM Jun 02, 2020Observed: 7.07 ft at 5:15AM Jun 02, 2020Observed: 7.07 ft at 5:30AM Jun 02, 2020Observed: 7.07 ft at 5:45AM Jun 02, 2020Observed: 7.07 ft at 6:00AM Jun 02, 2020Observed: 7.07 ft at 6:15AM Jun 02, 2020Observed: 7.07 ft at 6:30AM Jun 02, 2020Observed: 7.07 ft at 6:45AM Jun 02, 2020Observed: 7.07 ft at 7:00AM Jun 02, 2020Observed: 7.07 ft at 7:15AM Jun 02, 2020Observed: 7.07 ft at 7:30AM Jun 02, 2020Observed: 7.07 ft at 7:45AM Jun 02, 2020Observed: 7.07 ft at 8:00AM Jun 02, 2020Observed: 7.07 ft at 8:15AM Jun 02, 2020Observed: 7.07 ft at 8:30AM Jun 02, 2020Observed: 7.07 ft at 8:45AM Jun 02, 2020Observed: 7.06 ft at 9:00AM Jun 02, 2020Observed: 7.07 ft at 9:15AM Jun 02, 2020Observed: 7.07 ft at 9:30AM Jun 02, 2020Observed: 7.07 ft at 9:45AM Jun 02, 2020Observed: 7.07 ft at 10:00AM Jun 02, 2020Observed: 7.07 ft at 10:15AM Jun 02, 2020Observed: 7.07 ft at 10:30AM Jun 02, 2020Observed: 7.06 ft at 10:45AM Jun 02, 2020Observed: 7.06 ft at 11:00AM Jun 02, 2020Observed: 7.07 ft at 11:15AM Jun 02, 2020Observed: 7.06 ft at 11:30AM Jun 02, 2020Observed: 7.07 ft at 11:45AM Jun 02, 2020Observed: 7.07 ft at 12:00PM Jun 02, 2020Observed: 7.07 ft at 12:15PM Jun 02, 2020Observed: 7.07 ft at 12:30PM Jun 02, 2020Observed: 7.07 ft at 12:45PM Jun 02, 2020Observed: 7.07 ft at 1:00PM Jun 02, 2020Observed: 7.07 ft at 1:15PM Jun 02, 2020Observed: 7.06 ft at 1:30PM Jun 02, 2020Observed: 7.07 ft at 1:45PM Jun 02, 2020Observed: 7.05 ft at 2:00PM Jun 02, 2020Observed: 7.06 ft at 2:15PM Jun 02, 2020Observed: 7.06 ft at 2:30PM Jun 02, 2020Observed: 7.06 ft at 2:45PM Jun 02, 2020Observed: 7.06 ft at 3:00PM Jun 02, 2020Observed: 7.06 ft at 3:15PM Jun 02, 2020Observed: 7.05 ft at 3:30PM Jun 02, 2020Observed: 7.06 ft at 3:45PM Jun 02, 2020Observed: 7.06 ft at 4:00PM Jun 02, 2020Observed: 7.06 ft at 4:15PM Jun 02, 2020Observed: 7.06 ft at 4:30PM Jun 02, 2020Observed: 7.06 ft at 4:45PM Jun 02, 2020Observed: 7.06 ft at 5:00PM Jun 02, 2020Observed: 7.06 ft at 5:15PM Jun 02, 2020Observed: 7.06 ft at 5:30PM Jun 02, 2020Observed: 7.06 ft at 5:45PM Jun 02, 2020Observed: 7.06 ft at 6:00PM Jun 02, 2020Observed: 7.06 ft at 6:15PM Jun 02, 2020Observed: 7.06 ft at 6:30PM Jun 02, 2020Observed: 7.06 ft at 6:45PM Jun 02, 2020Observed: 7.06 ft at 7:00PM Jun 02, 2020Observed: 7.06 ft at 7:15PM Jun 02, 2020Observed: 7.06 ft at 7:30PM Jun 02, 2020Observed: 7.06 ft at 7:45PM Jun 02, 2020Observed: 7.06 ft at 8:00PM Jun 02, 2020Observed: 7.06 ft at 8:15PM Jun 02, 2020Observed: 7.06 ft at 8:30PM Jun 02, 2020Observed: 7.06 ft at 8:45PM Jun 02, 2020Observed: 7.06 ft at 9:00PM Jun 02, 2020Observed: 7.05 ft at 9:15PM Jun 02, 2020Observed: 7.06 ft at 9:30PM Jun 02, 2020Observed: 7.06 ft at 9:31PM Jun 02, 2020Observed: 7.05 ft at 9:45PM Jun 02, 2020Observed: 7.05 ft at 9:46PM Jun 02, 2020Observed: 7.05 ft at 10:00PM Jun 02, 2020Observed: 7.05 ft at 10:01PM Jun 02, 2020Observed: 7.05 ft at 10:15PM Jun 02, 2020Observed: 7.05 ft at 10:30PM Jun 02, 2020Observed: 7.05 ft at 10:45PM Jun 02, 2020Observed: 7.05 ft at 11:00PM Jun 02, 2020Observed: 7.06 ft at 11:15PM Jun 02, 2020Observed: 7.07 ft at 11:30PM Jun 02, 2020Observed: 7.06 ft at 11:45PM Jun 02, 2020Observed: 7.06 ft at 12:00AM Jun 03, 2020Observed: 7.06 ft at 12:15AM Jun 03, 2020Observed: 7.06 ft at 12:30AM Jun 03, 2020Observed: 7.06 ft at 12:45AM Jun 03, 2020Observed: 7.06 ft at 1:00AM Jun 03, 2020Observed: 7.06 ft at 1:15AM Jun 03, 2020Observed: 7.05 ft at 1:30AM Jun 03, 2020Observed: 7.06 ft at 1:45AM Jun 03, 2020Observed: 7.05 ft at 2:00AM Jun 03, 2020Observed: 7.06 ft at 2:15AM Jun 03, 2020Observed: 7.05 ft at 2:30AM Jun 03, 2020Observed: 7.05 ft at 2:45AM Jun 03, 2020Observed: 7.05 ft at 3:00AM Jun 03, 2020Observed: 7.05 ft at 3:15AM Jun 03, 2020Observed: 7.05 ft at 3:30AM Jun 03, 2020Observed: 7.06 ft at 3:45AM Jun 03, 2020Observed: 7.06 ft at 4:00AM Jun 03, 2020Observed: 7.06 ft at 4:15AM Jun 03, 2020Observed: 7.05 ft at 4:30AM Jun 03, 2020Observed: 7.06 ft at 4:45AM Jun 03, 2020Observed: 7.05 ft at 5:00AM Jun 03, 2020Observed: 7.06 ft at 5:15AM Jun 03, 2020Observed: 7.06 ft at 5:30AM Jun 03, 2020Observed: 7.06 ft at 5:45AM Jun 03, 2020Observed: 7.06 ft at 6:00AM Jun 03, 2020Observed: 7.06 ft at 6:15AM Jun 03, 2020Observed: 7.06 ft at 6:30AM Jun 03, 2020Observed: 7.06 ft at 6:45AM Jun 03, 2020Observed: 7.06 ft at 7:00AM Jun 03, 2020Observed: 7.06 ft at 7:15AM Jun 03, 2020Observed: 7.06 ft at 7:30AM Jun 03, 2020Observed: 7.06 ft at 7:45AM Jun 03, 2020Observed: 7.06 ft at 8:00AM Jun 03, 2020Observed: 7.06 ft at 8:15AM Jun 03, 2020Observed: 7.06 ft at 8:30AM Jun 03, 2020Observed: 7.06 ft at 8:45AM Jun 03, 2020Observed: 7.06 ft at 9:00AM Jun 03, 2020Observed: 7.06 ft at 9:15AM Jun 03, 2020Observed: 7.06 ft at 9:30AM Jun 03, 2020Observed: 7.05 ft at 9:45AM Jun 03, 2020Observed: 7.07 ft at 10:00AM Jun 03, 2020Observed: 7.06 ft at 10:15AM Jun 03, 2020Observed: 7.07 ft at 10:30AM Jun 03, 2020Observed: 7.07 ft at 10:45AM Jun 03, 2020Observed: 7.06 ft at 11:00AM Jun 03, 2020Observed: 7.07 ft at 11:15AM Jun 03, 2020Observed: 7.06 ft at 11:30AM Jun 03, 2020Observed: 7.06 ft at 11:45AM Jun 03, 2020Observed: 7.06 ft at 12:00PM Jun 03, 2020Observed: 7.07 ft at 12:15PM Jun 03, 2020Observed: 7.06 ft at 12:30PM Jun 03, 2020Observed: 7.07 ft at 12:45PM Jun 03, 2020Observed: 7.06 ft at 1:00PM Jun 03, 2020Observed: 7.07 ft at 1:15PM Jun 03, 2020Observed: 7.07 ft at 1:30PM Jun 03, 2020Observed: 7.07 ft at 1:31PM Jun 03, 2020Observed: 7.06 ft at 1:45PM Jun 03, 2020Observed: 7.06 ft at 1:46PM Jun 03, 2020Observed: 7.06 ft at 2:00PM Jun 03, 2020Observed: 7.06 ft at 2:01PM Jun 03, 2020Observed: 7.06 ft at 2:15PM Jun 03, 2020Observed: 7.06 ft at 2:30PM Jun 03, 2020Observed: 7.06 ft at 2:45PM Jun 03, 2020Observed: 7.06 ft at 3:00PM Jun 03, 2020Observed: 7.06 ft at 3:15PM Jun 03, 2020Observed: 7.06 ft at 3:30PM Jun 03, 2020Observed: 7.06 ft at 3:45PM Jun 03, 2020Observed: 7.06 ft at 4:00PM Jun 03, 2020Observed: 7.05 ft at 4:15PM Jun 03, 2020Observed: 7.05 ft at 4:30PM Jun 03, 2020Observed: 7.05 ft at 4:45PM Jun 03, 2020Observed: 7.05 ft at 5:00PM Jun 03, 2020Observed: 7.05 ft at 5:15PM Jun 03, 2020Observed: 7.05 ft at 5:30PM Jun 03, 2020Observed: 7.05 ft at 5:45PM Jun 03, 2020Observed: 7.05 ft at 6:00PM Jun 03, 2020Observed: 7.05 ft at 6:15PM Jun 03, 2020Observed: 7.05 ft at 6:30PM Jun 03, 2020Observed: 7.05 ft at 6:45PM Jun 03, 2020Observed: 7.05 ft at 7:00PM Jun 03, 2020Observed: 7.05 ft at 7:15PM Jun 03, 2020Observed: 7.05 ft at 7:30PM Jun 03, 2020Observed: 7.05 ft at 7:45PM Jun 03, 2020Observed: 7.05 ft at 8:00PM Jun 03, 2020Observed: 7.04 ft at 8:15PM Jun 03, 2020Observed: 7.05 ft at 8:30PM Jun 03, 2020Observed: 7.04 ft at 8:45PM Jun 03, 2020Observed: 7.05 ft at 9:00PM Jun 03, 2020Observed: 7.05 ft at 9:15PM Jun 03, 2020Observed: 7.04 ft at 9:30PM Jun 03, 2020Observed: 7.04 ft at 9:31PM Jun 03, 2020Observed: 7.05 ft at 9:45PM Jun 03, 2020Observed: 7.05 ft at 9:46PM Jun 03, 2020Observed: 7.04 ft at 10:00PM Jun 03, 2020Observed: 7.04 ft at 10:01PM Jun 03, 2020Observed: 7.04 ft at 10:15PM Jun 03, 2020Observed: 7.04 ft at 10:30PM Jun 03, 2020Observed: 7.04 ft at 10:45PM Jun 03, 2020Observed: 7.04 ft at 11:00PM Jun 03, 2020Observed: 7.05 ft at 11:15PM Jun 03, 2020Observed: 7.04 ft at 11:30PM Jun 03, 2020Observed: 7.04 ft at 11:45PM Jun 03, 2020Observed: 7.04 ft at 12:00AM Jun 04, 2020Observed: 7.04 ft at 12:15AM Jun 04, 2020Observed: 7.05 ft at 12:30AM Jun 04, 2020Observed: 7.04 ft at 12:45AM Jun 04, 2020Observed: 7.04 ft at 1:00AM Jun 04, 2020Observed: 7.04 ft at 1:15AM Jun 04, 2020Observed: 7.04 ft at 1:30AM Jun 04, 2020Observed: 7.04 ft at 1:45AM Jun 04, 2020Observed: 7.04 ft at 2:00AM Jun 04, 2020Observed: 7.04 ft at 2:15AM Jun 04, 2020Observed: 7.04 ft at 2:30AM Jun 04, 2020Observed: 7.05 ft at 2:45AM Jun 04, 2020Observed: 7.05 ft at 3:00AM Jun 04, 2020Observed: 7.05 ft at 3:15AM Jun 04, 2020Observed: 7.05 ft at 3:30AM Jun 04, 2020Observed: 7.05 ft at 3:45AM Jun 04, 2020Observed: 7.05 ft at 4:00AM Jun 04, 2020Observed: 7.05 ft at 4:15AM Jun 04, 2020Observed: 7.05 ft at 4:30AM Jun 04, 2020Observed: 7.05 ft at 4:45AM Jun 04, 2020Observed: 7.05 ft at 5:00AM Jun 04, 2020Observed: 7.05 ft at 5:15AM Jun 04, 2020Observed: 7.05 ft at 5:30AM Jun 04, 2020Observed: 7.05 ft at 5:31AM Jun 04, 2020Observed: 7.05 ft at 5:45AM Jun 04, 2020Observed: 7.05 ft at 5:46AM Jun 04, 2020Observed: 7.05 ft at 6:00AM Jun 04, 2020Observed: 7.05 ft at 6:01AM Jun 04, 2020USGS--Water Resources of the United StatesGCOS2(plotting HGIRG) Graph Created (6:38AM Jun 4, 2020)ObservedLatest observed value: 7.05 ft at 6:01 AM MDT 4-Jun-2020. Flood Stage is 9.5 ft
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About this graph
Tabular Data (UTC)
Tabular Data (MDT)
XML Data
RSS Files
Datum: NAVD88
Metadata
NOTE: Forecasts are not available for the Grace Coolidge Creek near Custer. Only observed stages are available for this point.
Return to Area Map
Flood Categories (in feet)
Major Flood Stage: 11
Moderate Flood Stage: 10
Flood Stage: 9.5
Action Stage: 8
Low Stage (in feet): -9999

Historic Crests
(1) 12.76 ft on 02/09/1979
(2) 11.39 ft on 05/08/1995
(3) 10.90 ft on 06/15/1976
(4) 10.84 ft on 09/07/1989
(5) 10.67 ft on 05/28/2019
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 10.67 ft on 05/28/2019
(2) 8.09 ft on 06/22/2018
(3) 7.12 ft on 07/28/2017
(4) 7.77 ft on 12/16/2016
(5) 7.81 ft on 05/22/2016
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.00 ft on 06/05/1977
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
11 Major Flood Stage. Extensive inundation of structures and roads possible due to flooding on Grace Coolidge Creek.
10 Moderate Flood Stage. Some inundation of structures and roads along Grace Coolidge Creek.
9.5 Minor Flood Stage. Minor flooding along Grace Coolidge Creek. Low lying roads in Custer State Park may become impassable.
8.5 Grace Coolidge Creek begins to overflow roads in Custer State Park.
8 Low land flooding along the creek begins.
Photos
(1) Looking upstream
(2) Looking downstream
(3) Staff gage
About This Location Collapse

Latitude: 43.761111° N, Longitude: 103.363611° W, Horizontal Datum: NAD27

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 9.5 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 4107.04 4116.54 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
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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: 1-Mar-2019 12:33 AM
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