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Hydrograph River at a Glance Download
Rock River near Joslin Stage (ft)Flow (kcfs)Observed: 7.01 ft at 12:15PM Mar 25, 2024Observed: 7.02 ft at 12:30PM Mar 25, 2024Observed: 7.02 ft at 12:45PM Mar 25, 2024Observed: 7.02 ft at 1:00PM Mar 25, 2024Observed: 7.01 ft at 1:15PM Mar 25, 2024Observed: 7.02 ft at 1:30PM Mar 25, 2024Observed: 6.98 ft at 1:45PM Mar 25, 2024Observed: 7.01 ft at 2:00PM Mar 25, 2024Observed: 7.01 ft at 2:15PM Mar 25, 2024Observed: 7.02 ft at 2:30PM Mar 25, 2024Observed: 7 ft at 2:45PM Mar 25, 2024Observed: 7 ft at 3:00PM Mar 25, 2024Observed: 7 ft at 3:15PM Mar 25, 2024Observed: 7.02 ft at 3:30PM Mar 25, 2024Observed: 7.01 ft at 3:45PM Mar 25, 2024Observed: 7.01 ft at 4:00PM Mar 25, 2024Observed: 7.03 ft at 4:15PM Mar 25, 2024Observed: 7.01 ft at 4:30PM Mar 25, 2024Observed: 7.02 ft at 4:45PM Mar 25, 2024Observed: 7.02 ft at 5:00PM Mar 25, 2024Observed: 7 ft at 5:15PM Mar 25, 2024Observed: 7.03 ft at 5:30PM Mar 25, 2024Observed: 7.01 ft at 5:45PM Mar 25, 2024Observed: 7.04 ft at 6:00PM Mar 25, 2024Observed: 7.01 ft at 6:15PM Mar 25, 2024Observed: 7.06 ft at 6:30PM Mar 25, 2024Observed: 7.04 ft at 6:45PM Mar 25, 2024Observed: 7.06 ft at 7:00PM Mar 25, 2024Observed: 7.04 ft at 7:15PM Mar 25, 2024Observed: 7.06 ft at 7:30PM Mar 25, 2024Observed: 7.03 ft at 7:45PM Mar 25, 2024Observed: 7.06 ft at 8:00PM Mar 25, 2024Observed: 7.03 ft at 8:15PM Mar 25, 2024Observed: 7.07 ft at 8:30PM Mar 25, 2024Observed: 7.06 ft at 8:45PM Mar 25, 2024Observed: 7.07 ft at 9:00PM Mar 25, 2024Observed: 7.06 ft at 9:15PM Mar 25, 2024Observed: 7.07 ft at 9:30PM Mar 25, 2024Observed: 7.02 ft at 9:45PM Mar 25, 2024Observed: 7.06 ft at 10:00PM Mar 25, 2024Observed: 7.07 ft at 10:15PM Mar 25, 2024Observed: 7.08 ft at 10:30PM Mar 25, 2024Observed: 7.08 ft at 10:45PM Mar 25, 2024Observed: 7.09 ft at 11:00PM Mar 25, 2024Observed: 7.07 ft at 11:15PM Mar 25, 2024Observed: 7.08 ft at 11:30PM Mar 25, 2024Observed: 7.1 ft at 11:45PM Mar 25, 2024Observed: 7.09 ft at 12:00AM Mar 26, 2024Observed: 7.09 ft at 12:15AM Mar 26, 2024Observed: 7.09 ft at 12:30AM Mar 26, 2024Observed: 7.09 ft at 12:45AM Mar 26, 2024Observed: 7.08 ft at 1:00AM Mar 26, 2024Observed: 7.1 ft at 1:15AM Mar 26, 2024Observed: 7.09 ft at 1:30AM Mar 26, 2024Observed: 7.1 ft at 1:45AM Mar 26, 2024Observed: 7.11 ft at 2:00AM Mar 26, 2024Observed: 7.1 ft at 2:15AM Mar 26, 2024Observed: 7.1 ft at 2:30AM Mar 26, 2024Observed: 7.1 ft at 2:45AM Mar 26, 2024Observed: 7.11 ft at 3:00AM Mar 26, 2024Observed: 7.13 ft at 3:15AM Mar 26, 2024Observed: 7.13 ft at 3:30AM Mar 26, 2024Observed: 7.1 ft at 3:45AM Mar 26, 2024Observed: 7.12 ft at 4:00AM Mar 26, 2024Observed: 7.11 ft at 4:15AM Mar 26, 2024Observed: 7.1 ft at 4:30AM Mar 26, 2024Observed: 7.1 ft at 4:45AM Mar 26, 2024Observed: 7.1 ft at 5:00AM Mar 26, 2024Observed: 7.1 ft at 5:15AM Mar 26, 2024Observed: 7.1 ft at 5:30AM Mar 26, 2024Observed: 7.12 ft at 5:45AM Mar 26, 2024Observed: 7.12 ft at 6:00AM Mar 26, 2024Observed: 7.15 ft at 6:15AM Mar 26, 2024Observed: 7.15 ft at 6:30AM Mar 26, 2024Observed: 7.14 ft at 6:45AM Mar 26, 2024Observed: 7.16 ft at 7:00AM Mar 26, 2024Observed: 7.15 ft at 7:15AM Mar 26, 2024Observed: 7.15 ft at 7:30AM Mar 26, 2024Observed: 7.17 ft at 7:45AM Mar 26, 2024Observed: 7.13 ft at 8:00AM Mar 26, 2024Observed: 7.17 ft at 8:15AM Mar 26, 2024Observed: 7.15 ft at 8:30AM Mar 26, 2024Observed: 7.18 ft at 8:45AM Mar 26, 2024Observed: 7.19 ft at 9:00AM Mar 26, 2024Observed: 7.2 ft at 9:15AM Mar 26, 2024Observed: 7.21 ft at 9:30AM Mar 26, 2024Observed: 7.22 ft at 9:45AM Mar 26, 2024Observed: 7.22 ft at 10:00AM Mar 26, 2024Observed: 7.2 ft at 10:15AM Mar 26, 2024Observed: 7.23 ft at 10:30AM Mar 26, 2024Observed: 7.23 ft at 10:45AM Mar 26, 2024Observed: 7.2 ft at 11:00AM Mar 26, 2024Observed: 7.24 ft at 11:15AM Mar 26, 2024Observed: 7.23 ft at 11:30AM Mar 26, 2024Observed: 7.26 ft at 11:45AM Mar 26, 2024Observed: 7.23 ft at 12:00PM Mar 26, 2024Observed: 7.26 ft at 12:15PM Mar 26, 2024Observed: 7.26 ft at 12:30PM Mar 26, 2024Observed: 7.27 ft at 12:45PM Mar 26, 2024Observed: 7.27 ft at 1:00PM Mar 26, 2024Observed: 7.27 ft at 1:15PM Mar 26, 2024Observed: 7.29 ft at 1:30PM Mar 26, 2024Observed: 7.3 ft at 1:45PM Mar 26, 2024Observed: 7.3 ft at 2:00PM Mar 26, 2024Observed: 7.28 ft at 2:15PM Mar 26, 2024Observed: 7.3 ft at 2:30PM Mar 26, 2024Observed: 7.33 ft at 2:45PM Mar 26, 2024Observed: 7.33 ft at 3:00PM Mar 26, 2024Observed: 7.32 ft at 3:15PM Mar 26, 2024Observed: 7.33 ft at 3:30PM Mar 26, 2024Observed: 7.33 ft at 3:45PM Mar 26, 2024Observed: 7.35 ft at 4:00PM Mar 26, 2024Observed: 7.34 ft at 4:15PM Mar 26, 2024Observed: 7.34 ft at 4:30PM Mar 26, 2024Observed: 7.37 ft at 4:45PM Mar 26, 2024Observed: 7.36 ft at 5:00PM Mar 26, 2024Observed: 7.36 ft at 5:15PM Mar 26, 2024Observed: 7.34 ft at 5:30PM Mar 26, 2024Observed: 7.37 ft at 5:45PM Mar 26, 2024Observed: 7.34 ft at 6:00PM Mar 26, 2024Observed: 7.36 ft at 6:15PM Mar 26, 2024Observed: 7.34 ft at 6:30PM Mar 26, 2024Observed: 7.37 ft at 6:45PM Mar 26, 2024Observed: 7.37 ft at 7:00PM Mar 26, 2024Observed: 7.37 ft at 7:15PM Mar 26, 2024Observed: 7.4 ft at 7:30PM Mar 26, 2024Observed: 7.41 ft at 7:45PM Mar 26, 2024Observed: 7.4 ft at 8:00PM Mar 26, 2024Observed: 7.39 ft at 8:15PM Mar 26, 2024Observed: 7.41 ft at 8:30PM Mar 26, 2024Observed: 7.4 ft at 8:45PM Mar 26, 2024Observed: 7.42 ft at 9:00PM Mar 26, 2024Observed: 7.43 ft at 9:15PM Mar 26, 2024Observed: 7.41 ft at 9:30PM Mar 26, 2024Observed: 7.43 ft at 9:45PM Mar 26, 2024Observed: 7.45 ft at 10:00PM Mar 26, 2024Observed: 7.47 ft at 10:15PM Mar 26, 2024Observed: 7.43 ft at 10:30PM Mar 26, 2024Observed: 7.45 ft at 10:45PM Mar 26, 2024Observed: 7.45 ft at 11:00PM Mar 26, 2024Observed: 7.48 ft at 11:15PM Mar 26, 2024Observed: 7.43 ft at 11:30PM Mar 26, 2024Observed: 7.48 ft at 11:45PM Mar 26, 2024Observed: 7.46 ft at 12:00AM Mar 27, 2024Observed: 7.5 ft at 12:15AM Mar 27, 2024Observed: 7.48 ft at 12:30AM Mar 27, 2024Observed: 7.51 ft at 12:45AM Mar 27, 2024Observed: 7.52 ft at 1:00AM Mar 27, 2024Observed: 7.52 ft at 1:15AM Mar 27, 2024Observed: 7.55 ft at 1:30AM Mar 27, 2024Observed: 7.53 ft at 1:45AM Mar 27, 2024Observed: 7.56 ft at 2:00AM Mar 27, 2024Observed: 7.54 ft at 2:15AM Mar 27, 2024Observed: 7.57 ft at 2:30AM Mar 27, 2024Observed: 7.6 ft at 2:45AM Mar 27, 2024Observed: 7.6 ft at 3:00AM Mar 27, 2024Observed: 7.6 ft at 3:15AM Mar 27, 2024Observed: 7.62 ft at 3:30AM Mar 27, 2024Observed: 7.61 ft at 3:45AM Mar 27, 2024Observed: 7.63 ft at 4:00AM Mar 27, 2024Observed: 7.64 ft at 4:15AM Mar 27, 2024Observed: 7.67 ft at 4:30AM Mar 27, 2024Observed: 7.69 ft at 4:45AM Mar 27, 2024Observed: 7.69 ft at 5:00AM Mar 27, 2024Observed: 7.69 ft at 5:15AM Mar 27, 2024Observed: 7.72 ft at 5:30AM Mar 27, 2024Observed: 7.76 ft at 5:45AM Mar 27, 2024Observed: 7.79 ft at 6:00AM Mar 27, 2024Observed: 7.79 ft at 6:15AM Mar 27, 2024Observed: 7.83 ft at 6:30AM Mar 27, 2024Observed: 7.84 ft at 6:45AM Mar 27, 2024Observed: 7.85 ft at 7:00AM Mar 27, 2024Observed: 7.9 ft at 7:15AM Mar 27, 2024Observed: 7.92 ft at 7:30AM Mar 27, 2024Observed: 7.95 ft at 7:45AM Mar 27, 2024Observed: 7.97 ft at 8:00AM Mar 27, 2024Observed: 7.99 ft at 8:15AM Mar 27, 2024Observed: 8.04 ft at 8:30AM Mar 27, 2024Observed: 8.07 ft at 8:45AM Mar 27, 2024Observed: 8.1 ft at 9:00AM Mar 27, 2024Observed: 8.14 ft at 9:15AM Mar 27, 2024Observed: 8.18 ft at 9:30AM Mar 27, 2024Observed: 8.2 ft at 9:45AM Mar 27, 2024Observed: 8.25 ft at 10:00AM Mar 27, 2024Observed: 8.3 ft at 10:15AM Mar 27, 2024Observed: 8.3 ft at 10:30AM Mar 27, 2024Observed: 8.34 ft at 10:45AM Mar 27, 2024Observed: 8.38 ft at 11:00AM Mar 27, 2024Observed: 8.43 ft at 11:15AM Mar 27, 2024Observed: 8.42 ft at 11:30AM Mar 27, 2024Observed: 8.49 ft at 11:45AM Mar 27, 2024Observed: 8.51 ft at 12:00PM Mar 27, 2024Observed: 8.58 ft at 12:15PM Mar 27, 2024Observed: 8.59 ft at 12:30PM Mar 27, 2024Observed: 8.61 ft at 12:45PM Mar 27, 2024Observed: 8.66 ft at 1:00PM Mar 27, 2024Observed: 8.72 ft at 1:15PM Mar 27, 2024Observed: 8.73 ft at 1:30PM Mar 27, 2024Observed: 8.76 ft at 1:45PM Mar 27, 2024Observed: 8.78 ft at 2:00PM Mar 27, 2024Observed: 8.8 ft at 2:15PM Mar 27, 2024Observed: 8.83 ft at 2:30PM Mar 27, 2024Observed: 8.87 ft at 2:45PM Mar 27, 2024Observed: 8.92 ft at 3:00PM Mar 27, 2024Observed: 8.94 ft at 3:15PM Mar 27, 2024Observed: 8.94 ft at 3:30PM Mar 27, 2024Observed: 9.01 ft at 3:45PM Mar 27, 2024Observed: 9.02 ft at 4:00PM Mar 27, 2024Observed: 9.06 ft at 4:15PM Mar 27, 2024Observed: 9.09 ft at 4:30PM Mar 27, 2024Observed: 9.1 ft at 4:45PM Mar 27, 2024Observed: 9.11 ft at 5:00PM Mar 27, 2024Observed: 9.16 ft at 5:15PM Mar 27, 2024Observed: 9.18 ft at 5:30PM Mar 27, 2024Observed: 9.23 ft at 5:45PM Mar 27, 2024Observed: 9.22 ft at 6:00PM Mar 27, 2024Observed: 9.27 ft at 6:15PM Mar 27, 2024Observed: 9.28 ft at 6:30PM Mar 27, 2024Observed: 9.3 ft at 6:45PM Mar 27, 2024Observed: 9.32 ft at 7:00PM Mar 27, 2024Observed: 9.34 ft at 7:15PM Mar 27, 2024Observed: 9.4 ft at 7:30PM Mar 27, 2024Observed: 9.39 ft at 7:45PM Mar 27, 2024Observed: 9.43 ft at 8:00PM Mar 27, 2024Observed: 9.45 ft at 8:15PM Mar 27, 2024Observed: 9.48 ft at 8:30PM Mar 27, 2024Observed: 9.49 ft at 8:45PM Mar 27, 2024Observed: 9.53 ft at 9:00PM Mar 27, 2024Observed: 9.55 ft at 9:15PM Mar 27, 2024Observed: 9.56 ft at 9:30PM Mar 27, 2024Observed: 9.57 ft at 9:45PM Mar 27, 2024Observed: 9.59 ft at 10:00PM Mar 27, 2024Observed: 9.63 ft at 10:15PM Mar 27, 2024Observed: 9.66 ft at 10:30PM Mar 27, 2024Observed: 9.67 ft at 10:45PM Mar 27, 2024Observed: 9.67 ft at 11:00PM Mar 27, 2024Observed: 9.72 ft at 11:15PM Mar 27, 2024Observed: 9.73 ft at 11:30PM Mar 27, 2024Observed: 9.76 ft at 11:45PM Mar 27, 2024Observed: 9.78 ft at 12:00AM Mar 28, 2024Observed: 9.81 ft at 12:15AM Mar 28, 2024Observed: 9.85 ft at 12:30AM Mar 28, 2024Observed: 9.83 ft at 12:45AM Mar 28, 2024Observed: 9.86 ft at 1:00AM Mar 28, 2024Observed: 9.89 ft at 1:15AM Mar 28, 2024Observed: 9.87 ft at 1:30AM Mar 28, 2024Observed: 9.9 ft at 1:45AM Mar 28, 2024Observed: 9.92 ft at 2:00AM Mar 28, 2024Observed: 9.94 ft at 2:15AM Mar 28, 2024Observed: 9.95 ft at 2:30AM Mar 28, 2024Observed: 9.99 ft at 2:45AM Mar 28, 2024Observed: 9.99 ft at 3:00AM Mar 28, 2024Observed: 10.03 ft at 3:15AM Mar 28, 2024Observed: 10.03 ft at 3:30AM Mar 28, 2024Observed: 10.05 ft at 3:45AM Mar 28, 2024Observed: 10.06 ft at 4:00AM Mar 28, 2024Observed: 10.08 ft at 4:15AM Mar 28, 2024Observed: 10.08 ft at 4:30AM Mar 28, 2024Observed: 10.09 ft at 4:45AM Mar 28, 2024Observed: 10.08 ft at 5:00AM Mar 28, 2024Observed: 10.1 ft at 5:15AM Mar 28, 2024Observed: 10.1 ft at 5:30AM Mar 28, 2024Observed: 10.16 ft at 5:45AM Mar 28, 2024Observed: 10.14 ft at 6:00AM Mar 28, 2024Observed: 10.14 ft at 6:15AM Mar 28, 2024Observed: 10.14 ft at 6:30AM Mar 28, 2024Observed: 10.18 ft at 6:45AM Mar 28, 2024Observed: 10.19 ft at 7:00AM Mar 28, 2024Observed: 10.18 ft at 7:15AM Mar 28, 2024Observed: 10.19 ft at 7:30AM Mar 28, 2024Observed: 10.21 ft at 7:45AM Mar 28, 2024Observed: 10.21 ft at 8:00AM Mar 28, 2024Observed: 10.19 ft at 8:15AM Mar 28, 2024Observed: 10.21 ft at 8:30AM Mar 28, 2024Observed: 10.21 ft at 8:45AM Mar 28, 2024Observed: 10.21 ft at 9:00AM Mar 28, 2024Observed: 10.22 ft at 9:15AM Mar 28, 2024Observed: 10.22 ft at 9:30AM Mar 28, 2024Observed: 10.25 ft at 9:45AM Mar 28, 2024Observed: 10.25 ft at 10:00AM Mar 28, 2024Observed: 10.25 ft at 10:15AM Mar 28, 2024Observed: 10.28 ft at 10:30AM Mar 28, 2024Highest Observation: 10.3 ft at 10:45AM Mar 28, 2024U.S. Geological SurveyJOSI2(plotting HGIRG) Graph Created (12:03PM Mar 28, 2024)ObservedLatest observed value: 10.3 ft at 10:45 AM CDT 28-Mar-2024. Flood Stage is 12 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 Rock River near Joslin are issued routinely during the warm season, and as needed at other times of the year.

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Upstream Gauge - at Como Upstream Gauge Downstream Gauge Downstream Gauge - at Moline
Flood Categories (in feet)
Major Flood Stage: 16.5
Moderate Flood Stage: 14
Flood Stage: 12
Action Stage: 11
Low Stage (in feet): -9999

Historic Crests
(1) 19.24 ft on 06/07/2002
(2) 19.11 ft on 04/21/2013
(3) 18.88 ft on 02/23/1997
(4) 18.73 ft on 05/31/1996
(5) 18.55 ft on 06/16/2000
(6) 18.51 ft on 03/16/2019 (P)
(7) 18.51 ft on 07/25/2017 (P)
(8) 18.36 ft on 02/23/2018 (P)
(9) 18.35 ft on 03/26/1993
(10) 18.02 ft on 02/27/2001
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 12.30 ft on 03/02/2023 (P)
(2) 15.08 ft on 05/21/2020 (P)
(3) 12.01 ft on 05/03/2020 (P)
(4) 17.32 ft on 06/01/2019 (P)
(5) 12.30 ft on 05/18/2019 (P)
(6) 15.22 ft on 05/04/2019 (P)
(7) 18.51 ft on 03/16/2019 (P)
(8) 16.57 ft on 02/27/2019 (P)
(9) 18.36 ft on 02/23/2018 (P)
(10) 18.51 ft on 07/25/2017 (P)
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: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
21 Water affects most of Hillsdale and much of Erie. Water also reaches the bottom of the Illinois Highway 92 bridge at Joslin.
20 Water affects several homes in Erie and affects the railroad tracks east of town.
19.5 Water affects much of Barstow Road between Barstow and Illinois Highway 5.
19.2 Water affects Barstow Road between Barstow and Illinois Highway 5.
19 Water affects several homes in Hillsdale on Docia Street and on the county road south of town. Water also affects most houses in Osborn.
18.5 Water affects the lowest sections of Moline Road east of Erie, as well as River Road.
18.39 Water affects Osborn Road at Osborn.
18.3 Water affects the railroad tracks near Osborn.
18 Water reaches the top of the Zuma Creek levee upstream of Barstow. Water also affects a few homes in Erie and Moline Road east of town. Water affects a few homes on Docia Street in Hillsdale and on the county road south of town. Water also affects a few homes in Shady Beach.
17.7 Water affects the railroad tracks south of Prophetstown.
17.5 Water is across Broadway at Jackson Street in Cleveland.
16.5 Water affects the lowest sections of Broadway and Main Street in Cleveland and affects a few homes.
16 Water affects much of Barstow Road between Barstow and Osborn. Water also affects homes in Osborn.
15 Water affects residences in the Thompson addition.
14 Water affects residences in outlying areas immediately along the river including basements, yards, driveways, and access roads.
13.7 Water affects Barstow Road between Barstow and Osborn.
13 Flooding of unprotected agricultural land occurs. Water also affects Lundeens Landing Campground.
12.5 Water affects some summer cottages along the river.
12 Water affects low lying agricultural land.
About This Location Collapse

Latitude: 41.556111° N, Longitude: 90.185278° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 12 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 563.74 ft 575.74 ft Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 564.06 ft 576.06 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
Quad Cities Weather Forecast Office
9040 N Harrison Street
Davenport, IA 52806-7326
(563) 386-3976
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Page last modified: 2-Nov-2020 7:29 PM
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