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Hydrograph River at a Glance Download
Illinois River at Peoria Lock and Dam Tailwater (ft)Highest Observation: 443.66 ft at 2:00PM Mar 17, 2023Observed: 443.63 ft at 4:00PM Mar 17, 2023Observed: 443.61 ft at 6:00PM Mar 17, 2023Observed: 443.56 ft at 8:00PM Mar 17, 2023Observed: 443.56 ft at 10:00PM Mar 17, 2023Observed: 443.53 ft at 12:00AM Mar 18, 2023Observed: 443.57 ft at 2:00AM Mar 18, 2023Observed: 443.55 ft at 4:00AM Mar 18, 2023Observed: 443.53 ft at 6:00AM Mar 18, 2023Observed: 443.51 ft at 8:00AM Mar 18, 2023Observed: 443.49 ft at 10:00AM Mar 18, 2023Observed: 443.48 ft at 12:00PM Mar 18, 2023Observed: 443.47 ft at 2:00PM Mar 18, 2023Observed: 443.45 ft at 4:00PM Mar 18, 2023Observed: 443.42 ft at 6:00PM Mar 18, 2023Observed: 443.44 ft at 8:00PM Mar 18, 2023Observed: 443.43 ft at 10:00PM Mar 18, 2023Observed: 443.43 ft at 12:00AM Mar 19, 2023Observed: 443.42 ft at 2:00AM Mar 19, 2023Observed: 443.42 ft at 4:00AM Mar 19, 2023Observed: 443.41 ft at 6:00AM Mar 19, 2023Observed: 443.41 ft at 8:00AM Mar 19, 2023Observed: 443.41 ft at 10:00AM Mar 19, 2023Observed: 443.39 ft at 12:00PM Mar 19, 2023Observed: 443.37 ft at 2:00PM Mar 19, 2023Observed: 443.35 ft at 4:00PM Mar 19, 2023Observed: 443.32 ft at 6:00PM Mar 19, 2023Observed: 443.3 ft at 8:00PM Mar 19, 2023Observed: 443.3 ft at 10:00PM Mar 19, 2023Observed: 443.26 ft at 12:00AM Mar 20, 2023Observed: 443.23 ft at 2:00AM Mar 20, 2023Observed: 443.2 ft at 4:00AM Mar 20, 2023Observed: 443.15 ft at 6:00AM Mar 20, 2023Observed: 443.1 ft at 8:00AM Mar 20, 2023Observed: 443.05 ft at 10:00AM Mar 20, 2023Observed: 443.04 ft at 12:00PM Mar 20, 2023Observed: 442.95 ft at 2:00PM Mar 20, 2023Observed: 442.9 ft at 4:00PM Mar 20, 2023Observed: 442.89 ft at 6:00PM Mar 20, 2023Observed: 442.97 ft at 8:00PM Mar 20, 2023Observed: 442.87 ft at 10:00PM Mar 20, 2023Observed: 442.93 ft at 12:00AM Mar 21, 2023Observed: 442.9 ft at 2:00AM Mar 21, 2023Observed: 442.95 ft at 4:00AM Mar 21, 2023Observed: 442.96 ft at 6:00AM Mar 21, 2023Observed: 442.95 ft at 8:00AM Mar 21, 2023Observed: 442.94 ft at 10:00AM Mar 21, 2023Observed: 442.92 ft at 12:00PM Mar 21, 2023Observed: 442.91 ft at 2:00PM Mar 21, 2023Observed: 442.82 ft at 4:00PM Mar 21, 2023Observed: 442.82 ft at 6:00PM Mar 21, 2023Observed: 442.81 ft at 8:00PM Mar 21, 2023Observed: 442.8 ft at 10:00PM Mar 21, 2023Observed: 442.78 ft at 12:00AM Mar 22, 2023Observed: 442.76 ft at 2:00AM Mar 22, 2023Observed: 442.76 ft at 4:00AM Mar 22, 2023Observed: 442.76 ft at 6:00AM Mar 22, 2023Observed: 442.75 ft at 8:00AM Mar 22, 2023Observed: 442.75 ft at 10:00AM Mar 22, 2023Observed: 442.74 ft at 12:00PM Mar 22, 2023Observed: 442.73 ft at 2:00PM Mar 22, 2023Observed: 442.73 ft at 4:00PM Mar 22, 2023Observed: 442.72 ft at 6:00PM Mar 22, 2023Observed: 442.72 ft at 8:00PM Mar 22, 2023Observed: 442.7 ft at 10:00PM Mar 22, 2023Observed: 442.76 ft at 12:00AM Mar 23, 2023Observed: 442.74 ft at 2:00AM Mar 23, 2023Observed: 442.74 ft at 4:00AM Mar 23, 2023Observed: 442.74 ft at 6:00AM Mar 23, 2023Observed: 442.74 ft at 8:00AM Mar 23, 2023Observed: 442.74 ft at 10:00AM Mar 23, 2023Observed: 442.72 ft at 12:00PM Mar 23, 2023Observed: 442.67 ft at 2:00PM Mar 23, 2023Observed: 442.65 ft at 4:00PM Mar 23, 2023Observed: 442.62 ft at 6:00PM Mar 23, 2023Observed: 442.58 ft at 8:00PM Mar 23, 2023Observed: 442.56 ft at 10:00PM Mar 23, 2023Observed: 442.54 ft at 12:00AM Mar 24, 2023Observed: 442.53 ft at 2:00AM Mar 24, 2023Observed: 442.53 ft at 4:00AM Mar 24, 2023Observed: 442.51 ft at 6:00AM Mar 24, 2023Observed: 442.51 ft at 8:00AM Mar 24, 2023Observed: 442.52 ft at 10:00AM Mar 24, 2023Observed: 442.47 ft at 12:00PM Mar 24, 2023Forecast: 442.4 ft 7:00PM Mar 24, 2023Forecast: 442.4 ft 1:00AM Mar 25, 2023Forecast: 442.4 ft 7:00AM Mar 25, 2023Forecast: 442.5 ft 1:00PM Mar 25, 2023Forecast: 442.6 ft 7:00PM Mar 25, 2023Forecast: 442.8 ft 1:00AM Mar 26, 2023Forecast: 443 ft 7:00AM Mar 26, 2023Forecast: 443.1 ft 1:00PM Mar 26, 2023Forecast: 443.3 ft 7:00PM Mar 26, 2023Forecast: 443.5 ft 1:00AM Mar 27, 2023Forecast: 443.6 ft 7:00AM Mar 27, 2023Forecast: 443.8 ft 1:00PM Mar 27, 2023Forecast: 444 ft 7:00PM Mar 27, 2023Forecast: 444.2 ft 1:00AM Mar 28, 2023Forecast: 444.5 ft 7:00AM Mar 28, 2023Forecast: 444.7 ft 1:00PM Mar 28, 2023Forecast: 444.8 ft 7:00PM Mar 28, 2023Forecast: 445 ft 1:00AM Mar 29, 2023Forecast: 445.1 ft 7:00AM Mar 29, 2023Forecast: 445.2 ft 1:00PM Mar 29, 2023Forecast: 445.3 ft 7:00PM Mar 29, 2023Forecast: 445.4 ft 1:00AM Mar 30, 2023Forecast: 445.5 ft 7:00AM Mar 30, 2023Highest Forecast: 445.6 ft 1:00PM Mar 30, 2023Forecast: 445.5 ft 7:00PM Mar 30, 2023Forecast: 445.5 ft 1:00AM Mar 31, 2023Forecast: 445.5 ft 7:00AM Mar 31, 2023USACE - Water Levels of Rivers and LakesPRAI2(plotting HTIRZ) Graph Created (1:53PM Mar 24, 2023)ObservedForecast (issued 9:44AM Mar 24)Latest observed value: 442.47 ft at 12:00 PM CDT 24-Mar-2023. Flood Stage is 447 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: NGVD29
Metadata
NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time.

NOTE: Forecasts for the Illinois River at Peoria Lock and Dam are issued routinely year-round.

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Upstream Gauge - at Peoria Upstream Gauge Downstream Gauge Downstream Gauge - near Havana
Flood Categories (in feet)
Major Flood Stage: 455
Moderate Flood Stage: 449
Flood Stage: 447
Action Stage: 444
Low Stage (in feet): -9999

Historic Crests
(1) 456.57 ft on 04/24/2013
(2) 455.90 ft on 05/24/1943
(3) 455.80 ft on 03/23/1979
(4) 455.60 ft on 03/08/1985
(5) 455.06 ft on 05/07/2019
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 444.45 ft on 05/11/2022
(2) 446.45 ft on 04/09/2022
(3) 445.70 ft on 02/26/2022
(4) 446.59 ft on 11/02/2021
(5) 447.15 ft on 07/04/2021
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:15
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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.
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Photos
(1) Looking Downstream
(2) Looking Upstream
About This Location Collapse

Latitude: 40.630578° N, Longitude: 89.625928° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 447 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 0 ft 447.00 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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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
Lincoln Weather Forecast Office
1362 State Route 10
Lincoln, IL 62656
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