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Hydrograph River at a Glance Download
Lemhi River near Lemhi Stage (ft)Flow (cfs)Observed: 4.24 ft at 1:15PM May 27, 2020Observed: 4.24 ft at 1:30PM May 27, 2020Observed: 4.24 ft at 1:45PM May 27, 2020Observed: 4.24 ft at 2:00PM May 27, 2020Observed: 4.23 ft at 2:15PM May 27, 2020Observed: 4.23 ft at 2:30PM May 27, 2020Observed: 4.23 ft at 2:45PM May 27, 2020Observed: 4.23 ft at 3:00PM May 27, 2020Observed: 4.23 ft at 3:15PM May 27, 2020Observed: 4.21 ft at 3:30PM May 27, 2020Observed: 4.22 ft at 3:45PM May 27, 2020Observed: 4.23 ft at 4:00PM May 27, 2020Observed: 4.22 ft at 4:15PM May 27, 2020Observed: 4.21 ft at 4:30PM May 27, 2020Observed: 4.2 ft at 4:45PM May 27, 2020Observed: 4.21 ft at 5:00PM May 27, 2020Observed: 4.2 ft at 5:15PM May 27, 2020Observed: 4.2 ft at 5:30PM May 27, 2020Observed: 4.19 ft at 5:45PM May 27, 2020Observed: 4.19 ft at 6:00PM May 27, 2020Observed: 4.15 ft at 6:15PM May 27, 2020Observed: 4.15 ft at 6:30PM May 27, 2020Observed: 4.15 ft at 6:45PM May 27, 2020Observed: 4.15 ft at 7:00PM May 27, 2020Observed: 4.15 ft at 7:15PM May 27, 2020Observed: 4.15 ft at 7:30PM May 27, 2020Observed: 4.15 ft at 7:45PM May 27, 2020Observed: 4.15 ft at 8:00PM May 27, 2020Observed: 4.14 ft at 8:15PM May 27, 2020Observed: 4.13 ft at 8:30PM May 27, 2020Observed: 4.15 ft at 8:45PM May 27, 2020Observed: 4.15 ft at 9:00PM May 27, 2020Observed: 4.15 ft at 9:15PM May 27, 2020Observed: 4.15 ft at 9:30PM May 27, 2020Observed: 4.15 ft at 9:45PM May 27, 2020Observed: 4.16 ft at 10:00PM May 27, 2020Observed: 4.16 ft at 10:15PM May 27, 2020Observed: 4.17 ft at 10:30PM May 27, 2020Observed: 4.18 ft at 10:45PM May 27, 2020Observed: 4.17 ft at 11:00PM May 27, 2020Observed: 4.19 ft at 11:15PM May 27, 2020Observed: 4.19 ft at 11:30PM May 27, 2020Observed: 4.2 ft at 11:45PM May 27, 2020Observed: 4.21 ft at 12:00AM May 28, 2020Observed: 4.2 ft at 12:15AM May 28, 2020Observed: 4.22 ft at 12:30AM May 28, 2020Observed: 4.22 ft at 12:45AM May 28, 2020Observed: 4.23 ft at 1:00AM May 28, 2020Observed: 4.23 ft at 1:15AM May 28, 2020Observed: 4.24 ft at 1:30AM May 28, 2020Observed: 4.25 ft at 1:45AM May 28, 2020Observed: 4.25 ft at 2:00AM May 28, 2020Observed: 4.26 ft at 2:15AM May 28, 2020Observed: 4.26 ft at 2:30AM May 28, 2020Observed: 4.26 ft at 2:45AM May 28, 2020Observed: 4.27 ft at 3:00AM May 28, 2020Observed: 4.27 ft at 3:15AM May 28, 2020Observed: 4.28 ft at 3:30AM May 28, 2020Observed: 4.28 ft at 3:45AM May 28, 2020Observed: 4.28 ft at 4:00AM May 28, 2020Observed: 4.28 ft at 4:15AM May 28, 2020Observed: 4.28 ft at 4:30AM May 28, 2020Observed: 4.3 ft at 4:45AM May 28, 2020Observed: 4.29 ft at 5:00AM May 28, 2020Observed: 4.29 ft at 5:15AM May 28, 2020Observed: 4.3 ft at 5:30AM May 28, 2020Observed: 4.3 ft at 5:45AM May 28, 2020Observed: 4.31 ft at 6:00AM May 28, 2020Observed: 4.31 ft at 6:15AM May 28, 2020Observed: 4.31 ft at 6:30AM May 28, 2020Observed: 4.31 ft at 6:45AM May 28, 2020Observed: 4.31 ft at 7:00AM May 28, 2020Observed: 4.31 ft at 7:15AM May 28, 2020Observed: 4.31 ft at 7:30AM May 28, 2020Observed: 4.32 ft at 7:45AM May 28, 2020Observed: 4.31 ft at 8:00AM May 28, 2020Observed: 4.32 ft at 8:15AM May 28, 2020Observed: 4.32 ft at 8:30AM May 28, 2020Observed: 4.32 ft at 8:45AM May 28, 2020Observed: 4.33 ft at 9:00AM May 28, 2020Observed: 4.32 ft at 9:15AM May 28, 2020Observed: 4.32 ft at 9:30AM May 28, 2020Observed: 4.31 ft at 9:45AM May 28, 2020Observed: 4.33 ft at 10:00AM May 28, 2020Observed: 4.33 ft at 10:15AM May 28, 2020Observed: 4.31 ft at 10:30AM May 28, 2020Observed: 4.32 ft at 10:45AM May 28, 2020Observed: 4.31 ft at 11:00AM May 28, 2020Observed: 4.32 ft at 11:15AM May 28, 2020Observed: 4.32 ft at 11:30AM May 28, 2020Observed: 4.31 ft at 11:45AM May 28, 2020Observed: 4.31 ft at 12:00PM May 28, 2020Observed: 4.31 ft at 12:15PM May 28, 2020Observed: 4.31 ft at 12:30PM May 28, 2020Observed: 4.31 ft at 12:45PM May 28, 2020Observed: 4.31 ft at 1:00PM May 28, 2020Observed: 4.31 ft at 1:15PM May 28, 2020Observed: 4.3 ft at 1:30PM May 28, 2020Observed: 4.31 ft at 1:45PM May 28, 2020Observed: 4.3 ft at 2:00PM May 28, 2020Observed: 4.29 ft at 2:15PM May 28, 2020Observed: 4.3 ft at 2:30PM May 28, 2020Observed: 4.31 ft at 2:45PM May 28, 2020Observed: 4.3 ft at 3:00PM May 28, 2020Observed: 4.29 ft at 3:15PM May 28, 2020Observed: 4.28 ft at 3:30PM May 28, 2020Observed: 4.29 ft at 3:45PM May 28, 2020Observed: 4.29 ft at 4:00PM May 28, 2020Observed: 4.29 ft at 4:15PM May 28, 2020Observed: 4.3 ft at 4:30PM May 28, 2020Observed: 4.29 ft at 4:45PM May 28, 2020Observed: 4.29 ft at 5:00PM May 28, 2020Observed: 4.28 ft at 5:15PM May 28, 2020Observed: 4.29 ft at 5:30PM May 28, 2020Observed: 4.29 ft at 5:45PM May 28, 2020Observed: 4.27 ft at 6:00PM May 28, 2020Observed: 4.26 ft at 6:15PM May 28, 2020Observed: 4.27 ft at 6:30PM May 28, 2020Observed: 4.26 ft at 6:45PM May 28, 2020Observed: 4.26 ft at 7:00PM May 28, 2020Observed: 4.26 ft at 7:15PM May 28, 2020Observed: 4.26 ft at 7:30PM May 28, 2020Observed: 4.26 ft at 7:45PM May 28, 2020Observed: 4.26 ft at 8:00PM May 28, 2020Observed: 4.26 ft at 8:15PM May 28, 2020Observed: 4.26 ft at 8:30PM May 28, 2020Observed: 4.27 ft at 8:45PM May 28, 2020Observed: 4.28 ft at 9:00PM May 28, 2020Observed: 4.28 ft at 9:15PM May 28, 2020Observed: 4.28 ft at 9:30PM May 28, 2020Observed: 4.28 ft at 9:45PM May 28, 2020Observed: 4.29 ft at 10:00PM May 28, 2020Observed: 4.3 ft at 10:15PM May 28, 2020Observed: 4.3 ft at 10:30PM May 28, 2020Observed: 4.31 ft at 10:45PM May 28, 2020Observed: 4.32 ft at 11:00PM May 28, 2020Observed: 4.33 ft at 11:15PM May 28, 2020Observed: 4.34 ft at 11:30PM May 28, 2020Observed: 4.35 ft at 11:45PM May 28, 2020Observed: 4.36 ft at 12:00AM May 29, 2020Observed: 4.36 ft at 12:15AM May 29, 2020Observed: 4.38 ft at 12:30AM May 29, 2020Observed: 4.38 ft at 12:45AM May 29, 2020Observed: 4.39 ft at 1:00AM May 29, 2020Observed: 4.4 ft at 1:15AM May 29, 2020Observed: 4.4 ft at 1:30AM May 29, 2020Observed: 4.4 ft at 1:45AM May 29, 2020Observed: 4.42 ft at 2:00AM May 29, 2020Observed: 4.43 ft at 2:15AM May 29, 2020Observed: 4.43 ft at 2:30AM May 29, 2020Observed: 4.44 ft at 2:45AM May 29, 2020Observed: 4.45 ft at 3:00AM May 29, 2020Observed: 4.46 ft at 3:15AM May 29, 2020Observed: 4.46 ft at 3:30AM May 29, 2020Observed: 4.47 ft at 3:45AM May 29, 2020Observed: 4.47 ft at 4:00AM May 29, 2020Observed: 4.48 ft at 4:15AM May 29, 2020Observed: 4.49 ft at 4:30AM May 29, 2020Observed: 4.5 ft at 4:45AM May 29, 2020Observed: 4.51 ft at 5:00AM May 29, 2020Observed: 4.51 ft at 5:15AM May 29, 2020Observed: 4.52 ft at 5:30AM May 29, 2020Observed: 4.51 ft at 5:45AM May 29, 2020Observed: 4.52 ft at 6:00AM May 29, 2020Observed: 4.53 ft at 6:15AM May 29, 2020Observed: 4.53 ft at 6:30AM May 29, 2020Observed: 4.53 ft at 6:45AM May 29, 2020Observed: 4.53 ft at 7:00AM May 29, 2020Observed: 4.53 ft at 7:15AM May 29, 2020Observed: 4.52 ft at 7:30AM May 29, 2020Observed: 4.53 ft at 7:45AM May 29, 2020Observed: 4.53 ft at 8:00AM May 29, 2020Observed: 4.54 ft at 8:15AM May 29, 2020Observed: 4.53 ft at 8:30AM May 29, 2020Observed: 4.53 ft at 8:45AM May 29, 2020Observed: 4.53 ft at 9:00AM May 29, 2020Observed: 4.54 ft at 9:15AM May 29, 2020Observed: 4.54 ft at 9:30AM May 29, 2020Observed: 4.53 ft at 9:45AM May 29, 2020Observed: 4.54 ft at 10:00AM May 29, 2020Observed: 4.55 ft at 10:15AM May 29, 2020Observed: 4.55 ft at 10:30AM May 29, 2020Observed: 4.54 ft at 10:45AM May 29, 2020Observed: 4.54 ft at 11:00AM May 29, 2020Observed: 4.55 ft at 11:15AM May 29, 2020Observed: 4.54 ft at 11:30AM May 29, 2020Observed: 4.54 ft at 11:45AM May 29, 2020Observed: 4.54 ft at 12:00PM May 29, 2020Observed: 4.54 ft at 12:15PM May 29, 2020Observed: 4.53 ft at 12:30PM May 29, 2020Observed: 4.54 ft at 12:45PM May 29, 2020Observed: 4.53 ft at 1:00PM May 29, 2020Observed: 4.53 ft at 1:15PM May 29, 2020Observed: 4.53 ft at 1:30PM May 29, 2020Observed: 4.53 ft at 1:45PM May 29, 2020Observed: 4.53 ft at 2:00PM May 29, 2020Observed: 4.52 ft at 2:15PM May 29, 2020Observed: 4.51 ft at 2:30PM May 29, 2020Observed: 4.52 ft at 2:45PM May 29, 2020Observed: 4.51 ft at 3:00PM May 29, 2020Observed: 4.5 ft at 3:15PM May 29, 2020Observed: 4.51 ft at 3:30PM May 29, 2020Observed: 4.5 ft at 3:45PM May 29, 2020Observed: 4.5 ft at 4:00PM May 29, 2020Observed: 4.49 ft at 4:15PM May 29, 2020Observed: 4.5 ft at 4:30PM May 29, 2020Observed: 4.49 ft at 4:45PM May 29, 2020Observed: 4.49 ft at 5:00PM May 29, 2020Observed: 4.49 ft at 5:15PM May 29, 2020Observed: 4.49 ft at 5:30PM May 29, 2020Observed: 4.48 ft at 5:45PM May 29, 2020Observed: 4.49 ft at 6:00PM May 29, 2020Observed: 4.48 ft at 6:15PM May 29, 2020Observed: 4.48 ft at 6:30PM May 29, 2020Observed: 4.49 ft at 6:45PM May 29, 2020Observed: 4.48 ft at 7:00PM May 29, 2020Observed: 4.48 ft at 7:15PM May 29, 2020Observed: 4.48 ft at 7:30PM May 29, 2020Observed: 4.49 ft at 7:45PM May 29, 2020Observed: 4.5 ft at 8:00PM May 29, 2020Observed: 4.5 ft at 8:15PM May 29, 2020Observed: 4.51 ft at 8:30PM May 29, 2020Observed: 4.51 ft at 8:45PM May 29, 2020Observed: 4.53 ft at 9:00PM May 29, 2020Observed: 4.51 ft at 9:15PM May 29, 2020Observed: 4.53 ft at 9:30PM May 29, 2020Observed: 4.55 ft at 9:45PM May 29, 2020Observed: 4.55 ft at 10:00PM May 29, 2020Observed: 4.56 ft at 10:15PM May 29, 2020Observed: 4.57 ft at 10:30PM May 29, 2020Observed: 4.59 ft at 10:45PM May 29, 2020Observed: 4.61 ft at 11:00PM May 29, 2020Observed: 4.6 ft at 11:15PM May 29, 2020Observed: 4.62 ft at 11:30PM May 29, 2020Observed: 4.63 ft at 11:45PM May 29, 2020Observed: 4.66 ft at 12:00AM May 30, 2020Observed: 4.69 ft at 12:15AM May 30, 2020Observed: 4.69 ft at 12:30AM May 30, 2020Observed: 4.7 ft at 12:45AM May 30, 2020Observed: 4.72 ft at 1:00AM May 30, 2020Observed: 4.72 ft at 1:15AM May 30, 2020Observed: 4.72 ft at 1:30AM May 30, 2020Observed: 4.74 ft at 1:45AM May 30, 2020Observed: 4.75 ft at 2:00AM May 30, 2020Observed: 4.74 ft at 2:15AM May 30, 2020Observed: 4.75 ft at 2:30AM May 30, 2020Observed: 4.75 ft at 2:45AM May 30, 2020Observed: 4.77 ft at 3:00AM May 30, 2020Observed: 4.76 ft at 3:15AM May 30, 2020Observed: 4.76 ft at 3:30AM May 30, 2020Observed: 4.77 ft at 3:45AM May 30, 2020Observed: 4.76 ft at 4:00AM May 30, 2020Observed: 4.78 ft at 4:15AM May 30, 2020Observed: 4.78 ft at 4:30AM May 30, 2020Observed: 4.79 ft at 4:45AM May 30, 2020Observed: 4.78 ft at 5:00AM May 30, 2020Observed: 4.79 ft at 5:15AM May 30, 2020Observed: 4.8 ft at 5:30AM May 30, 2020Observed: 4.81 ft at 5:45AM May 30, 2020Observed: 4.81 ft at 6:00AM May 30, 2020Observed: 4.81 ft at 6:15AM May 30, 2020Observed: 4.81 ft at 6:30AM May 30, 2020Highest Observation: 4.82 ft at 6:45AM May 30, 2020Observed: 4.81 ft at 7:00AM May 30, 2020Observed: 4.8 ft at 7:15AM May 30, 2020Observed: 4.81 ft at 7:30AM May 30, 2020Observed: 4.81 ft at 7:45AM May 30, 2020Observed: 4.8 ft at 8:00AM May 30, 2020Highest Observation: 4.82 ft at 8:15AM May 30, 2020Observed: 4.81 ft at 8:30AM May 30, 2020Observed: 4.81 ft at 8:45AM May 30, 2020Observed: 4.81 ft at 9:00AM May 30, 2020Highest Observation: 4.82 ft at 9:15AM May 30, 2020Observed: 4.81 ft at 9:30AM May 30, 2020Observed: 4.8 ft at 9:45AM May 30, 2020Observed: 4.81 ft at 10:00AM May 30, 2020Highest Observation: 4.82 ft at 10:15AM May 30, 2020Observed: 4.81 ft at 10:30AM May 30, 2020Observed: 4.81 ft at 10:45AM May 30, 2020Observed: 4.81 ft at 11:00AM May 30, 2020Highest Observation: 4.82 ft at 11:15AM May 30, 2020Observed: 4.81 ft at 11:30AM May 30, 2020Observed: 4.81 ft at 11:45AM May 30, 2020Observed: 4.8 ft at 12:00PM May 30, 2020Forecast: 4.55 ft 6:00PM May 30, 2020Forecast: 4.7 ft 12:00AM May 31, 2020Highest Forecast: 4.77 ft 6:00AM May 31, 2020Forecast: 4.7 ft 12:00PM May 31, 2020Forecast: 4.45 ft 6:00PM May 31, 2020Forecast: 4.65 ft 12:00AM Jun 01, 2020Forecast: 4.65 ft 6:00AM Jun 01, 2020Forecast: 4.57 ft 12:00PM Jun 01, 2020Forecast: 4.56 ft 6:00PM Jun 01, 2020Forecast: 4.54 ft 12:00AM Jun 02, 2020Forecast: 4.53 ft 6:00AM Jun 02, 2020Forecast: 4.52 ft 12:00PM Jun 02, 2020Forecast: 4.5 ft 6:00PM Jun 02, 2020Forecast: 4.49 ft 12:00AM Jun 03, 2020Forecast: 4.47 ft 6:00AM Jun 03, 2020Forecast: 4.47 ft 12:00PM Jun 03, 2020Forecast: 4.45 ft 6:00PM Jun 03, 2020Forecast: 4.44 ft 12:00AM Jun 04, 2020Forecast: 4.43 ft 6:00AM Jun 04, 2020Forecast: 4.42 ft 12:00PM Jun 04, 2020Forecast: 4.4 ft 6:00PM Jun 04, 2020Forecast: 4.39 ft 12:00AM Jun 05, 2020Forecast: 4.38 ft 6:00AM Jun 05, 2020Forecast: 4.38 ft 12:00PM Jun 05, 2020Forecast: 4.36 ft 6:00PM Jun 05, 2020Forecast: 4.35 ft 12:00AM Jun 06, 2020Forecast: 4.35 ft 6:00AM Jun 06, 2020Forecast: 4.34 ft 12:00PM Jun 06, 2020USGS--Water Resources of the United StatesLERI1(plotting HGIRG) Graph Created (1:00PM May 30, 2020)ObservedForecast (issued 9:59AM May 30)Latest observed value: 4.8 ft at 12:00 PM MDT 30-May-2020. Flood Stage is 6.5 ft
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About this graph
Tabular Data (UTC)
Tabular Data (MDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts for the Lemhi River near Lemhi are issued routinely year-round.
Return to Area Map
Flood Categories (in feet)
Major Flood Stage: 10
Moderate Flood Stage: 8.5
Flood Stage: 6.5
Action Stage: 6
Low Stage (in feet): -9999

Historic Crests
(1) 7.19 ft on 06/21/1984
(2) 6.72 ft on 07/06/1975
(3) 6.70 ft on 06/05/2017
(4) 6.67 ft on 06/24/2011
(5) 6.62 ft on 06/24/1982
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 5.81 ft on 06/01/2018
(2) 6.70 ft on 06/05/2017
(3) 6.67 ft on 06/24/2011
(4) 5.63 ft on 06/17/2010
(5) 6.13 ft on 06/22/2009
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 2.39 ft on 10/06/1988
Zoom Level:16
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 Mainy bridges along Highway 28 will be overtopped and flooded from Lemhi to Tendoy.
8.5 Possible damage to irrigation diversion headgates and ditches.
7 Expect possible flooding to Highway 28 from Tendoy to Salmon.
6.5 Expect flooding to ranchland adjacent to the river from Tendoy to Salmon.
About This Location Collapse

Latitude: 44.940000° N, Longitude: 113.637778° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 6.5 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 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 4960 ft 4966.5 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
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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
Missoula Weather Forecast Office
6633 Aviation Way
Missoula, MT 59808
(406) 329-4840
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Page last modified: 1-Mar-2019 12:33 AM
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