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Hydrograph River at a Glance Download
Illinois River at Peoria Lock and Dam Tailwater (ft)Observed: 437.9 ft at 8:00AM Apr 12, 2021Observed: 437.5 ft at 10:00AM Apr 12, 2021Observed: 439.03 ft at 12:00PM Apr 12, 2021Observed: 439.11 ft at 2:00PM Apr 12, 2021Observed: 439.19 ft at 4:00PM Apr 12, 2021Observed: 439.18 ft at 6:00PM Apr 12, 2021Observed: 439.21 ft at 8:00PM Apr 12, 2021Observed: 439.22 ft at 10:00PM Apr 12, 2021Observed: 439.22 ft at 12:00AM Apr 13, 2021Observed: 439.22 ft at 2:00AM Apr 13, 2021Observed: 439.24 ft at 4:00AM Apr 13, 2021Observed: 439.24 ft at 6:00AM Apr 13, 2021Observed: 439.25 ft at 8:00AM Apr 13, 2021Observed: 439.25 ft at 10:00AM Apr 13, 2021Observed: 439.26 ft at 12:00PM Apr 13, 2021Observed: 439.26 ft at 2:00PM Apr 13, 2021Observed: 439.25 ft at 4:00PM Apr 13, 2021Observed: 439.25 ft at 6:00PM Apr 13, 2021Observed: 439.25 ft at 8:00PM Apr 13, 2021Observed: 439.26 ft at 10:00PM Apr 13, 2021Observed: 439.28 ft at 12:00AM Apr 14, 2021Observed: 439.3 ft at 2:00AM Apr 14, 2021Observed: 439.33 ft at 4:00AM Apr 14, 2021Observed: 439.33 ft at 6:00AM Apr 14, 2021Observed: 439.33 ft at 8:00AM Apr 14, 2021Observed: 439.33 ft at 10:00AM Apr 14, 2021Observed: 439.33 ft at 12:00PM Apr 14, 2021Observed: 439.31 ft at 2:00PM Apr 14, 2021Observed: 439.29 ft at 4:00PM Apr 14, 2021Observed: 439.3 ft at 6:00PM Apr 14, 2021Observed: 439.32 ft at 8:00PM Apr 14, 2021Highest Observation: 439.34 ft at 10:00PM Apr 14, 2021Highest Observation: 439.34 ft at 12:00AM Apr 15, 2021Observed: 439.32 ft at 2:00AM Apr 15, 2021Observed: 439.31 ft at 4:00AM Apr 15, 2021Observed: 439.28 ft at 6:00AM Apr 15, 2021Observed: 439.28 ft at 8:00AM Apr 15, 2021Observed: 439.28 ft at 10:00AM Apr 15, 2021Observed: 439.31 ft at 12:00PM Apr 15, 2021Observed: 439.29 ft at 2:00PM Apr 15, 2021Observed: 439.29 ft at 4:00PM Apr 15, 2021Observed: 439.27 ft at 6:00PM Apr 15, 2021Observed: 439.24 ft at 8:00PM Apr 15, 2021Observed: 439.2 ft at 10:00PM Apr 15, 2021Observed: 439.15 ft at 12:00AM Apr 16, 2021Observed: 439.12 ft at 2:00AM Apr 16, 2021Observed: 439.08 ft at 4:00AM Apr 16, 2021Observed: 439.05 ft at 6:00AM Apr 16, 2021Observed: 439.01 ft at 8:00AM Apr 16, 2021Observed: 438.98 ft at 10:00AM Apr 16, 2021Observed: 438.95 ft at 12:00PM Apr 16, 2021Observed: 438.91 ft at 2:00PM Apr 16, 2021Observed: 438.88 ft at 4:00PM Apr 16, 2021Observed: 438.83 ft at 6:00PM Apr 16, 2021Observed: 438.81 ft at 8:00PM Apr 16, 2021Observed: 438.78 ft at 10:00PM Apr 16, 2021Observed: 438.74 ft at 12:00AM Apr 17, 2021Observed: 438.7 ft at 2:00AM Apr 17, 2021Observed: 438.67 ft at 4:00AM Apr 17, 2021Observed: 438.62 ft at 6:00AM Apr 17, 2021Observed: 438.58 ft at 8:00AM Apr 17, 2021Observed: 438.38 ft at 10:00AM Apr 17, 2021Observed: 437.3 ft at 6:00PM Apr 17, 2021Observed: 437.12 ft at 8:00PM Apr 17, 2021Observed: 436.89 ft at 10:00PM Apr 17, 2021Observed: 436.7 ft at 12:00AM Apr 18, 2021Observed: 436.44 ft at 2:00AM Apr 18, 2021Observed: 436.35 ft at 4:00AM Apr 18, 2021Observed: 436.19 ft at 6:00AM Apr 18, 2021Observed: 436 ft at 8:00AM Apr 18, 2021Observed: 435.91 ft at 10:00AM Apr 18, 2021Observed: 435.86 ft at 12:00PM Apr 18, 2021Observed: 435.71 ft at 2:00PM Apr 18, 2021Observed: 435.62 ft at 4:00PM Apr 18, 2021Observed: 435.69 ft at 6:00PM Apr 18, 2021Observed: 435.46 ft at 8:00PM Apr 18, 2021Observed: 435.35 ft at 10:00PM Apr 18, 2021Observed: 435.26 ft at 12:00AM Apr 19, 2021Observed: 435.1 ft at 2:00AM Apr 19, 2021Observed: 435.04 ft at 4:00AM Apr 19, 2021Observed: 434.92 ft at 6:00AM Apr 19, 2021Highest Forecast: 435 ft 1:00PM Apr 19, 2021Highest Forecast: 435 ft 7:00PM Apr 19, 2021Forecast: 434.9 ft 1:00AM Apr 20, 2021Forecast: 434.8 ft 7:00AM Apr 20, 2021Forecast: 434.8 ft 1:00PM Apr 20, 2021Forecast: 434.7 ft 7:00PM Apr 20, 2021Forecast: 434.6 ft 1:00AM Apr 21, 2021Forecast: 434.5 ft 7:00AM Apr 21, 2021Forecast: 434.5 ft 1:00PM Apr 21, 2021Forecast: 434.4 ft 7:00PM Apr 21, 2021Forecast: 434.3 ft 1:00AM Apr 22, 2021Forecast: 434.3 ft 7:00AM Apr 22, 2021Forecast: 434.3 ft 1:00PM Apr 22, 2021Forecast: 434.2 ft 7:00PM Apr 22, 2021Forecast: 434.2 ft 1:00AM Apr 23, 2021Forecast: 434.2 ft 7:00AM Apr 23, 2021Forecast: 434.1 ft 1:00PM Apr 23, 2021Forecast: 434.1 ft 7:00PM Apr 23, 2021Forecast: 434.1 ft 1:00AM Apr 24, 2021Forecast: 434 ft 7:00AM Apr 24, 2021Forecast: 434 ft 1:00PM Apr 24, 2021Forecast: 434 ft 7:00PM Apr 24, 2021Forecast: 433.9 ft 1:00AM Apr 25, 2021Forecast: 433.9 ft 7:00AM Apr 25, 2021USACE - Water Levels of Rivers and LakesPRAI2(plotting HTIRZ) Graph Created (7:08AM Apr 19, 2021)ObservedForecast (issued 8:43AM Apr 18)Latest observed value: 434.92 ft at 6:00 AM CDT 19-Apr-2021. 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 24 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) 454.89 ft on 05/22/2020 (P)
(2) 446.22 ft on 01/19/2020 (P)
(3) 447.19 ft on 11/04/2019 (P)
(4) 447.28 ft on 10/03/2019 (P)
(5) 447.54 ft on 06/24/2019
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: 40.633330° N, Longitude: 89.625000° 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 Not Available 447.0 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
(217) 732-3089
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