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Hydrograph River at a Glance Download
Keyapaha River at Wewala Stage (ft)Observed: 2.99 ft at 9:00AM May 28, 2020Observed: 2.98 ft at 9:15AM May 28, 2020Highest Observation: 3 ft at 9:30AM May 28, 2020Observed: 2.97 ft at 9:45AM May 28, 2020Highest Observation: 3 ft at 10:00AM May 28, 2020Highest Observation: 3 ft at 10:15AM May 28, 2020Observed: 2.99 ft at 10:30AM May 28, 2020Observed: 2.99 ft at 10:45AM May 28, 2020Observed: 2.99 ft at 11:00AM May 28, 2020Observed: 2.97 ft at 11:15AM May 28, 2020Observed: 2.97 ft at 11:30AM May 28, 2020Observed: 2.97 ft at 11:45AM May 28, 2020Observed: 2.96 ft at 12:00PM May 28, 2020Observed: 2.96 ft at 12:15PM May 28, 2020Observed: 2.96 ft at 12:30PM May 28, 2020Observed: 2.94 ft at 12:45PM May 28, 2020Observed: 2.94 ft at 1:00PM May 28, 2020Observed: 2.95 ft at 1:15PM May 28, 2020Observed: 2.94 ft at 1:30PM May 28, 2020Observed: 2.92 ft at 1:45PM May 28, 2020Observed: 2.94 ft at 2:00PM May 28, 2020Observed: 2.91 ft at 2:15PM May 28, 2020Observed: 2.92 ft at 2:30PM May 28, 2020Observed: 2.92 ft at 2:45PM May 28, 2020Observed: 2.91 ft at 3:00PM May 28, 2020Observed: 2.94 ft at 3:15PM May 28, 2020Observed: 2.89 ft at 3:30PM May 28, 2020Observed: 2.92 ft at 3:45PM May 28, 2020Observed: 2.91 ft at 4:00PM May 28, 2020Observed: 2.91 ft at 4:15PM May 28, 2020Observed: 2.91 ft at 4:30PM May 28, 2020Observed: 2.9 ft at 4:45PM May 28, 2020Observed: 2.88 ft at 5:00PM May 28, 2020Observed: 2.9 ft at 5:15PM May 28, 2020Observed: 2.89 ft at 5:30PM May 28, 2020Observed: 2.9 ft at 5:45PM May 28, 2020Observed: 2.9 ft at 6:00PM May 28, 2020Observed: 2.89 ft at 6:15PM May 28, 2020Observed: 2.89 ft at 6:30PM May 28, 2020Observed: 2.9 ft at 6:45PM May 28, 2020Observed: 2.89 ft at 7:00PM May 28, 2020Observed: 2.88 ft at 7:15PM May 28, 2020Observed: 2.87 ft at 7:30PM May 28, 2020Observed: 2.87 ft at 7:45PM May 28, 2020Observed: 2.86 ft at 8:00PM May 28, 2020Observed: 2.86 ft at 8:15PM May 28, 2020Observed: 2.88 ft at 8:30PM May 28, 2020Observed: 2.87 ft at 8:45PM May 28, 2020Observed: 2.87 ft at 9:00PM May 28, 2020Observed: 2.85 ft at 9:15PM May 28, 2020Observed: 2.82 ft at 9:30PM May 28, 2020Observed: 2.84 ft at 9:45PM May 28, 2020Observed: 2.85 ft at 10:00PM May 28, 2020Observed: 2.85 ft at 10:15PM May 28, 2020Observed: 2.85 ft at 10:30PM May 28, 2020Observed: 2.85 ft at 10:45PM May 28, 2020Observed: 2.85 ft at 11:00PM May 28, 2020Observed: 2.82 ft at 11:15PM May 28, 2020Observed: 2.85 ft at 11:30PM May 28, 2020Observed: 2.85 ft at 11:45PM May 28, 2020Observed: 2.81 ft at 12:00AM May 29, 2020Observed: 2.84 ft at 12:15AM May 29, 2020Observed: 2.84 ft at 12:30AM May 29, 2020Observed: 2.79 ft at 12:45AM May 29, 2020Observed: 2.81 ft at 1:00AM May 29, 2020Observed: 2.8 ft at 1:15AM May 29, 2020Observed: 2.81 ft at 1:30AM May 29, 2020Observed: 2.81 ft at 1:45AM May 29, 2020Observed: 2.8 ft at 2:00AM May 29, 2020Observed: 2.78 ft at 2:15AM May 29, 2020Observed: 2.79 ft at 2:30AM May 29, 2020Observed: 2.78 ft at 2:45AM May 29, 2020Observed: 2.77 ft at 3:00AM May 29, 2020Observed: 2.79 ft at 3:15AM May 29, 2020Observed: 2.79 ft at 3:30AM May 29, 2020Observed: 2.75 ft at 3:45AM May 29, 2020Observed: 2.77 ft at 4:00AM May 29, 2020Observed: 2.78 ft at 4:15AM May 29, 2020Observed: 2.77 ft at 4:30AM May 29, 2020Observed: 2.76 ft at 4:45AM May 29, 2020Observed: 2.77 ft at 5:00AM May 29, 2020Observed: 2.78 ft at 5:15AM May 29, 2020Observed: 2.78 ft at 5:30AM May 29, 2020Observed: 2.76 ft at 5:45AM May 29, 2020Observed: 2.76 ft at 6:00AM May 29, 2020Observed: 2.76 ft at 6:15AM May 29, 2020Observed: 2.77 ft at 6:30AM May 29, 2020Observed: 2.76 ft at 6:45AM May 29, 2020Observed: 2.77 ft at 7:00AM May 29, 2020Observed: 2.76 ft at 7:15AM May 29, 2020Observed: 2.76 ft at 7:30AM May 29, 2020Observed: 2.75 ft at 7:45AM May 29, 2020Observed: 2.75 ft at 8:00AM May 29, 2020Observed: 2.74 ft at 8:15AM May 29, 2020Observed: 2.75 ft at 8:30AM May 29, 2020Observed: 2.75 ft at 8:45AM May 29, 2020Observed: 2.73 ft at 9:00AM May 29, 2020Observed: 2.73 ft at 9:15AM May 29, 2020Observed: 2.73 ft at 9:30AM May 29, 2020Observed: 2.73 ft at 9:45AM May 29, 2020Observed: 2.72 ft at 10:00AM May 29, 2020Observed: 2.72 ft at 10:15AM May 29, 2020Observed: 2.72 ft at 10:30AM May 29, 2020Observed: 2.72 ft at 10:45AM May 29, 2020Observed: 2.72 ft at 11:00AM May 29, 2020Observed: 2.71 ft at 11:15AM May 29, 2020Observed: 2.71 ft at 11:30AM May 29, 2020Observed: 2.7 ft at 11:45AM May 29, 2020Observed: 2.7 ft at 12:00PM May 29, 2020Observed: 2.7 ft at 12:15PM May 29, 2020Observed: 2.71 ft at 12:30PM May 29, 2020Observed: 2.71 ft at 12:45PM May 29, 2020Observed: 2.71 ft at 1:00PM May 29, 2020Observed: 2.71 ft at 1:15PM May 29, 2020Observed: 2.68 ft at 1:30PM May 29, 2020Observed: 2.69 ft at 1:45PM May 29, 2020Observed: 2.68 ft at 2:00PM May 29, 2020Observed: 2.68 ft at 2:15PM May 29, 2020Observed: 2.69 ft at 2:30PM May 29, 2020Observed: 2.69 ft at 2:45PM May 29, 2020Observed: 2.69 ft at 3:00PM May 29, 2020Observed: 2.69 ft at 3:15PM May 29, 2020Observed: 2.68 ft at 3:30PM May 29, 2020Observed: 2.69 ft at 3:45PM May 29, 2020Observed: 2.68 ft at 4:00PM May 29, 2020Observed: 2.68 ft at 4:15PM May 29, 2020Observed: 2.68 ft at 4:30PM May 29, 2020Observed: 2.68 ft at 4:45PM May 29, 2020Observed: 2.67 ft at 5:00PM May 29, 2020Observed: 2.68 ft at 5:15PM May 29, 2020Observed: 2.67 ft at 5:30PM May 29, 2020Observed: 2.68 ft at 5:45PM May 29, 2020Observed: 2.67 ft at 6:00PM May 29, 2020Observed: 2.68 ft at 6:15PM May 29, 2020Observed: 2.68 ft at 6:30PM May 29, 2020Observed: 2.66 ft at 6:45PM May 29, 2020Observed: 2.67 ft at 7:00PM May 29, 2020Observed: 2.67 ft at 7:15PM May 29, 2020Observed: 2.67 ft at 7:30PM May 29, 2020Observed: 2.66 ft at 7:45PM May 29, 2020Observed: 2.66 ft at 8:00PM May 29, 2020Observed: 2.67 ft at 8:15PM May 29, 2020Observed: 2.67 ft at 8:30PM May 29, 2020Observed: 2.67 ft at 8:45PM May 29, 2020Observed: 2.66 ft at 9:00PM May 29, 2020Observed: 2.65 ft at 9:15PM May 29, 2020Observed: 2.64 ft at 9:30PM May 29, 2020Observed: 2.64 ft at 9:45PM May 29, 2020Observed: 2.63 ft at 10:00PM May 29, 2020Observed: 2.65 ft at 10:15PM May 29, 2020Observed: 2.63 ft at 10:30PM May 29, 2020Observed: 2.63 ft at 10:45PM May 29, 2020Observed: 2.63 ft at 11:00PM May 29, 2020Observed: 2.62 ft at 11:15PM May 29, 2020Observed: 2.63 ft at 11:30PM May 29, 2020Observed: 2.62 ft at 11:45PM May 29, 2020Observed: 2.62 ft at 12:00AM May 30, 2020Observed: 2.61 ft at 12:15AM May 30, 2020Observed: 2.62 ft at 12:30AM May 30, 2020Observed: 2.62 ft at 12:45AM May 30, 2020Observed: 2.63 ft at 1:00AM May 30, 2020Observed: 2.62 ft at 1:15AM May 30, 2020Observed: 2.62 ft at 1:30AM May 30, 2020Observed: 2.62 ft at 1:45AM May 30, 2020Observed: 2.62 ft at 2:00AM May 30, 2020Observed: 2.6 ft at 2:15AM May 30, 2020Observed: 2.63 ft at 2:30AM May 30, 2020Observed: 2.61 ft at 2:45AM May 30, 2020Observed: 2.61 ft at 3:00AM May 30, 2020Observed: 2.61 ft at 3:15AM May 30, 2020Observed: 2.61 ft at 3:30AM May 30, 2020Observed: 2.62 ft at 3:45AM May 30, 2020Observed: 2.62 ft at 4:00AM May 30, 2020Observed: 2.61 ft at 4:15AM May 30, 2020Observed: 2.61 ft at 4:30AM May 30, 2020Observed: 2.59 ft at 4:45AM May 30, 2020Observed: 2.61 ft at 5:00AM May 30, 2020Observed: 2.59 ft at 5:15AM May 30, 2020Observed: 2.6 ft at 5:30AM May 30, 2020Observed: 2.61 ft at 5:45AM May 30, 2020Observed: 2.61 ft at 6:00AM May 30, 2020Observed: 2.62 ft at 6:15AM May 30, 2020Observed: 2.6 ft at 6:30AM May 30, 2020Observed: 2.62 ft at 6:45AM May 30, 2020Observed: 2.62 ft at 7:00AM May 30, 2020Observed: 2.61 ft at 7:15AM May 30, 2020Observed: 2.59 ft at 7:30AM May 30, 2020Observed: 2.6 ft at 7:45AM May 30, 2020Observed: 2.57 ft at 8:00AM May 30, 2020Observed: 2.6 ft at 8:15AM May 30, 2020Observed: 2.59 ft at 8:30AM May 30, 2020Observed: 2.61 ft at 8:45AM May 30, 2020Observed: 2.62 ft at 9:00AM May 30, 2020Observed: 2.62 ft at 9:15AM May 30, 2020Observed: 2.62 ft at 9:30AM May 30, 2020Observed: 2.61 ft at 9:45AM May 30, 2020Observed: 2.62 ft at 10:00AM May 30, 2020Observed: 2.62 ft at 10:15AM May 30, 2020Observed: 2.61 ft at 10:30AM May 30, 2020Observed: 2.61 ft at 10:45AM May 30, 2020Observed: 2.6 ft at 11:00AM May 30, 2020Observed: 2.59 ft at 11:15AM May 30, 2020Observed: 2.6 ft at 11:30AM May 30, 2020Observed: 2.59 ft at 11:45AM May 30, 2020Observed: 2.59 ft at 12:00PM May 30, 2020Observed: 2.58 ft at 12:15PM May 30, 2020Observed: 2.59 ft at 12:30PM May 30, 2020Observed: 2.59 ft at 12:45PM May 30, 2020Observed: 2.59 ft at 1:00PM May 30, 2020Observed: 2.59 ft at 1:15PM May 30, 2020Observed: 2.59 ft at 1:30PM May 30, 2020Observed: 2.6 ft at 1:45PM May 30, 2020Observed: 2.59 ft at 2:00PM May 30, 2020Observed: 2.59 ft at 2:15PM May 30, 2020Observed: 2.59 ft at 2:30PM May 30, 2020Observed: 2.59 ft at 2:45PM May 30, 2020Observed: 2.58 ft at 3:00PM May 30, 2020Observed: 2.58 ft at 3:15PM May 30, 2020Observed: 2.57 ft at 3:30PM May 30, 2020Observed: 2.57 ft at 3:45PM May 30, 2020Observed: 2.57 ft at 4:00PM May 30, 2020Observed: 2.56 ft at 4:15PM May 30, 2020Observed: 2.56 ft at 4:30PM May 30, 2020Observed: 2.56 ft at 4:45PM May 30, 2020Observed: 2.55 ft at 5:00PM May 30, 2020Observed: 2.58 ft at 5:15PM May 30, 2020Observed: 2.58 ft at 5:30PM May 30, 2020Observed: 2.57 ft at 5:45PM May 30, 2020Observed: 2.57 ft at 6:00PM May 30, 2020Observed: 2.57 ft at 6:15PM May 30, 2020Observed: 2.56 ft at 6:30PM May 30, 2020Observed: 2.56 ft at 6:45PM May 30, 2020Observed: 2.56 ft at 7:00PM May 30, 2020Observed: 2.56 ft at 7:15PM May 30, 2020Observed: 2.57 ft at 8:00PM May 30, 2020Observed: 2.56 ft at 8:15PM May 30, 2020Observed: 2.57 ft at 8:30PM May 30, 2020Observed: 2.56 ft at 8:45PM May 30, 2020Observed: 2.55 ft at 9:00PM May 30, 2020Observed: 2.58 ft at 9:15PM May 30, 2020Observed: 2.58 ft at 9:30PM May 30, 2020Observed: 2.56 ft at 9:45PM May 30, 2020Observed: 2.56 ft at 10:00PM May 30, 2020Observed: 2.56 ft at 10:15PM May 30, 2020Observed: 2.56 ft at 10:30PM May 30, 2020Observed: 2.55 ft at 10:45PM May 30, 2020Observed: 2.56 ft at 11:00PM May 30, 2020Observed: 2.55 ft at 11:15PM May 30, 2020Observed: 2.56 ft at 11:30PM May 30, 2020Observed: 2.56 ft at 11:45PM May 30, 2020Observed: 2.55 ft at 12:00AM May 31, 2020Observed: 2.55 ft at 12:15AM May 31, 2020Observed: 2.53 ft at 12:30AM May 31, 2020Observed: 2.55 ft at 12:45AM May 31, 2020Observed: 2.55 ft at 1:00AM May 31, 2020Observed: 2.54 ft at 1:15AM May 31, 2020Observed: 2.55 ft at 1:30AM May 31, 2020Observed: 2.56 ft at 1:45AM May 31, 2020Observed: 2.54 ft at 2:00AM May 31, 2020Observed: 2.55 ft at 2:15AM May 31, 2020Observed: 2.57 ft at 2:30AM May 31, 2020Observed: 2.55 ft at 2:45AM May 31, 2020Observed: 2.56 ft at 3:00AM May 31, 2020Observed: 2.55 ft at 3:15AM May 31, 2020Observed: 2.54 ft at 3:30AM May 31, 2020Observed: 2.55 ft at 3:45AM May 31, 2020Observed: 2.54 ft at 4:00AM May 31, 2020Observed: 2.53 ft at 4:15AM May 31, 2020Observed: 2.54 ft at 4:30AM May 31, 2020Observed: 2.55 ft at 4:45AM May 31, 2020Observed: 2.54 ft at 5:00AM May 31, 2020Observed: 2.54 ft at 5:15AM May 31, 2020Observed: 2.55 ft at 5:30AM May 31, 2020Observed: 2.55 ft at 5:45AM May 31, 2020Observed: 2.57 ft at 6:00AM May 31, 2020Observed: 2.56 ft at 6:15AM May 31, 2020Observed: 2.55 ft at 6:30AM May 31, 2020Observed: 2.56 ft at 6:45AM May 31, 2020Observed: 2.55 ft at 7:00AM May 31, 2020Observed: 2.57 ft at 7:15AM May 31, 2020Observed: 2.55 ft at 7:30AM May 31, 2020Observed: 2.55 ft at 7:45AM May 31, 2020Observed: 2.56 ft at 8:00AM May 31, 2020Observed: 2.54 ft at 8:15AM May 31, 2020USGS--Water Resources of the United StatesWEWS2(plotting HGIRZ) Graph Created (8:53AM May 31, 2020)ObservedLatest observed value: 2.54 ft at 8:15 AM CDT 31-May-2020. Flood Stage is 11 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 at Wewala. Only observed stages are available for this point.
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Upstream Gauge - near Keyapaha Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 13
Moderate Flood Stage: 12
Flood Stage: 11
Action Stage: 8
Low Stage (in feet): -9999

Historic Crests
(1) 13.50 ft on 03/25/1950
(2) 13.08 ft on 03/31/1952
(3) 10.56 ft on 03/24/1960
(4) 9.67 ft on 03/04/1994
(5) 8.53 ft on 05/15/1962
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 5.21 ft on 04/22/2018
(2) 6.24 ft on 03/05/2018
(3) 4.36 ft on 05/21/2017
(4) 6.03 ft on 02/14/2017
(5) 5.78 ft on 05/23/2016
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.80 ft on 07/28/2002
Show More Low Water Records

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:14
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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
13 Major Flood Stage. Extensive flooding of agricultural land. Roads and structures along the river may be flooded.
12 Moderate flood stage. Flooding may impact roads and structures along the river.
11 Flood stage. Flooding begins to affect agricultural land.
8 Flooding of low lying areas along the river.
About This Location Collapse

Latitude: 43.027087° N, Longitude: 99.780921° W, Horizontal Datum: NAD27

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 11 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 2049.78 ft 2060.78 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:
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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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