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Hydrograph River at a Glance Download
Boone Creek near Mchenry Stage (ft)Flow (cfs)Observed: 0.88 ft at 8:00PM Oct 18, 2021Observed: 0.84 ft at 8:15PM Oct 18, 2021Observed: 0.87 ft at 8:30PM Oct 18, 2021Observed: 0.86 ft at 8:45PM Oct 18, 2021Observed: 0.87 ft at 9:00PM Oct 18, 2021Observed: 0.87 ft at 9:15PM Oct 18, 2021Observed: 0.89 ft at 9:30PM Oct 18, 2021Observed: 0.88 ft at 9:45PM Oct 18, 2021Highest Observation: 0.9 ft at 10:00PM Oct 18, 2021Observed: 0.83 ft at 10:15PM Oct 18, 2021Observed: 0.88 ft at 10:30PM Oct 18, 2021Observed: 0.87 ft at 10:45PM Oct 18, 2021Observed: 0.88 ft at 11:00PM Oct 18, 2021Highest Observation: 0.9 ft at 11:15PM Oct 18, 2021Observed: 0.86 ft at 11:30PM Oct 18, 2021Observed: 0.88 ft at 11:45PM Oct 18, 2021Observed: 0.86 ft at 12:00AM Oct 19, 2021Observed: 0.85 ft at 12:15AM Oct 19, 2021Observed: 0.89 ft at 12:30AM Oct 19, 2021Observed: 0.86 ft at 12:45AM Oct 19, 2021Observed: 0.88 ft at 1:00AM Oct 19, 2021Observed: 0.87 ft at 1:15AM Oct 19, 2021Observed: 0.88 ft at 1:30AM Oct 19, 2021Observed: 0.88 ft at 1:45AM Oct 19, 2021Observed: 0.86 ft at 2:00AM Oct 19, 2021Observed: 0.87 ft at 2:15AM Oct 19, 2021Observed: 0.87 ft at 2:30AM Oct 19, 2021Observed: 0.89 ft at 2:45AM Oct 19, 2021Observed: 0.87 ft at 3:00AM Oct 19, 2021Observed: 0.86 ft at 3:15AM Oct 19, 2021Observed: 0.84 ft at 3:30AM Oct 19, 2021Observed: 0.87 ft at 3:45AM Oct 19, 2021Observed: 0.87 ft at 4:00AM Oct 19, 2021Observed: 0.84 ft at 4:15AM Oct 19, 2021Observed: 0.86 ft at 4:30AM Oct 19, 2021Observed: 0.84 ft at 4:45AM Oct 19, 2021Observed: 0.86 ft at 5:00AM Oct 19, 2021Observed: 0.86 ft at 5:15AM Oct 19, 2021Observed: 0.88 ft at 5:30AM Oct 19, 2021Observed: 0.89 ft at 5:45AM Oct 19, 2021Observed: 0.88 ft at 6:00AM Oct 19, 2021Observed: 0.89 ft at 6:15AM Oct 19, 2021Observed: 0.85 ft at 6:30AM Oct 19, 2021Observed: 0.89 ft at 6:45AM Oct 19, 2021Observed: 0.85 ft at 7:00AM Oct 19, 2021Observed: 0.86 ft at 7:15AM Oct 19, 2021Observed: 0.84 ft at 7:30AM Oct 19, 2021Observed: 0.85 ft at 7:45AM Oct 19, 2021Observed: 0.87 ft at 8:00AM Oct 19, 2021Observed: 0.83 ft at 8:15AM Oct 19, 2021Observed: 0.85 ft at 8:30AM Oct 19, 2021Observed: 0.85 ft at 8:45AM Oct 19, 2021Observed: 0.85 ft at 9:00AM Oct 19, 2021Observed: 0.87 ft at 9:15AM Oct 19, 2021Observed: 0.86 ft at 9:30AM Oct 19, 2021Observed: 0.83 ft at 9:45AM Oct 19, 2021Observed: 0.83 ft at 10:00AM Oct 19, 2021Observed: 0.87 ft at 10:15AM Oct 19, 2021Observed: 0.82 ft at 10:30AM Oct 19, 2021Observed: 0.84 ft at 10:45AM Oct 19, 2021Observed: 0.84 ft at 11:00AM Oct 19, 2021Observed: 0.86 ft at 11:15AM Oct 19, 2021Observed: 0.82 ft at 11:30AM Oct 19, 2021Observed: 0.88 ft at 11:45AM Oct 19, 2021Observed: 0.88 ft at 12:00PM Oct 19, 2021Observed: 0.89 ft at 12:15PM Oct 19, 2021Observed: 0.87 ft at 12:30PM Oct 19, 2021Observed: 0.88 ft at 12:45PM Oct 19, 2021Observed: 0.88 ft at 1:00PM Oct 19, 2021Observed: 0.89 ft at 1:15PM Oct 19, 2021Observed: 0.86 ft at 1:30PM Oct 19, 2021Observed: 0.86 ft at 1:45PM Oct 19, 2021Observed: 0.87 ft at 2:00PM Oct 19, 2021Observed: 0.89 ft at 2:15PM Oct 19, 2021Observed: 0.84 ft at 2:30PM Oct 19, 2021Highest Observation: 0.9 ft at 2:45PM Oct 19, 2021Observed: 0.83 ft at 3:00PM Oct 19, 2021Observed: 0.83 ft at 3:15PM Oct 19, 2021Observed: 0.82 ft at 3:30PM Oct 19, 2021Observed: 0.83 ft at 3:45PM Oct 19, 2021Observed: 0.84 ft at 4:00PM Oct 19, 2021Observed: 0.83 ft at 4:15PM Oct 19, 2021Observed: 0.84 ft at 4:30PM Oct 19, 2021Observed: 0.87 ft at 4:45PM Oct 19, 2021Observed: 0.84 ft at 5:00PM Oct 19, 2021Observed: 0.84 ft at 5:15PM Oct 19, 2021Observed: 0.82 ft at 5:30PM Oct 19, 2021Observed: 0.85 ft at 5:45PM Oct 19, 2021Observed: 0.85 ft at 6:00PM Oct 19, 2021Observed: 0.83 ft at 6:15PM Oct 19, 2021Observed: 0.83 ft at 6:30PM Oct 19, 2021Observed: 0.82 ft at 6:45PM Oct 19, 2021Observed: 0.85 ft at 7:00PM Oct 19, 2021Observed: 0.83 ft at 7:15PM Oct 19, 2021Observed: 0.84 ft at 7:30PM Oct 19, 2021Observed: 0.83 ft at 7:45PM Oct 19, 2021Observed: 0.84 ft at 8:00PM Oct 19, 2021Observed: 0.83 ft at 8:15PM Oct 19, 2021Observed: 0.84 ft at 8:30PM Oct 19, 2021Observed: 0.84 ft at 8:45PM Oct 19, 2021Observed: 0.86 ft at 9:00PM Oct 19, 2021Observed: 0.84 ft at 9:15PM Oct 19, 2021Observed: 0.83 ft at 9:30PM Oct 19, 2021Observed: 0.83 ft at 9:45PM Oct 19, 2021Observed: 0.82 ft at 10:00PM Oct 19, 2021Observed: 0.82 ft at 10:15PM Oct 19, 2021Observed: 0.84 ft at 10:30PM Oct 19, 2021Observed: 0.87 ft at 10:45PM Oct 19, 2021Observed: 0.82 ft at 11:00PM Oct 19, 2021Observed: 0.82 ft at 11:15PM Oct 19, 2021Observed: 0.84 ft at 11:30PM Oct 19, 2021Observed: 0.82 ft at 11:45PM Oct 19, 2021Observed: 0.83 ft at 12:00AM Oct 20, 2021Observed: 0.82 ft at 12:15AM Oct 20, 2021Observed: 0.82 ft at 12:30AM Oct 20, 2021Observed: 0.82 ft at 12:45AM Oct 20, 2021Observed: 0.81 ft at 1:00AM Oct 20, 2021Observed: 0.82 ft at 1:15AM Oct 20, 2021Observed: 0.81 ft at 1:30AM Oct 20, 2021Observed: 0.81 ft at 1:45AM Oct 20, 2021Observed: 0.79 ft at 2:00AM Oct 20, 2021Observed: 0.8 ft at 2:15AM Oct 20, 2021Observed: 0.78 ft at 2:30AM Oct 20, 2021Observed: 0.76 ft at 2:45AM Oct 20, 2021Observed: 0.78 ft at 3:00AM Oct 20, 2021Observed: 0.78 ft at 3:15AM Oct 20, 2021Observed: 0.79 ft at 3:30AM Oct 20, 2021Observed: 0.8 ft at 3:45AM Oct 20, 2021Observed: 0.8 ft at 4:00AM Oct 20, 2021Observed: 0.81 ft at 4:15AM Oct 20, 2021Observed: 0.8 ft at 4:30AM Oct 20, 2021Observed: 0.77 ft at 4:45AM Oct 20, 2021Observed: 0.76 ft at 5:00AM Oct 20, 2021Observed: 0.78 ft at 5:15AM Oct 20, 2021Observed: 0.79 ft at 5:30AM Oct 20, 2021Observed: 0.82 ft at 5:45AM Oct 20, 2021Observed: 0.78 ft at 6:00AM Oct 20, 2021Observed: 0.79 ft at 6:15AM Oct 20, 2021Observed: 0.8 ft at 6:30AM Oct 20, 2021Observed: 0.83 ft at 6:45AM Oct 20, 2021Observed: 0.8 ft at 7:00AM Oct 20, 2021Observed: 0.8 ft at 7:15AM Oct 20, 2021Observed: 0.8 ft at 7:30AM Oct 20, 2021Observed: 0.81 ft at 7:45AM Oct 20, 2021Observed: 0.8 ft at 8:00AM Oct 20, 2021Observed: 0.81 ft at 8:15AM Oct 20, 2021Observed: 0.81 ft at 8:30AM Oct 20, 2021Observed: 0.79 ft at 8:45AM Oct 20, 2021Observed: 0.82 ft at 9:00AM Oct 20, 2021Observed: 0.81 ft at 9:15AM Oct 20, 2021Observed: 0.82 ft at 9:30AM Oct 20, 2021Observed: 0.8 ft at 9:45AM Oct 20, 2021Observed: 0.81 ft at 10:00AM Oct 20, 2021Observed: 0.81 ft at 10:15AM Oct 20, 2021Observed: 0.8 ft at 10:30AM Oct 20, 2021Observed: 0.81 ft at 10:45AM Oct 20, 2021Observed: 0.79 ft at 11:00AM Oct 20, 2021Observed: 0.82 ft at 11:15AM Oct 20, 2021Observed: 0.81 ft at 11:30AM Oct 20, 2021Observed: 0.81 ft at 11:45AM Oct 20, 2021Observed: 0.82 ft at 12:00PM Oct 20, 2021Observed: 0.8 ft at 12:15PM Oct 20, 2021Observed: 0.8 ft at 12:30PM Oct 20, 2021Observed: 0.8 ft at 12:45PM Oct 20, 2021Observed: 0.8 ft at 1:00PM Oct 20, 2021Observed: 0.81 ft at 1:15PM Oct 20, 2021Observed: 0.8 ft at 1:30PM Oct 20, 2021Observed: 0.8 ft at 1:45PM Oct 20, 2021Observed: 0.79 ft at 2:00PM Oct 20, 2021Observed: 0.82 ft at 2:15PM Oct 20, 2021Observed: 0.82 ft at 2:30PM Oct 20, 2021Observed: 0.8 ft at 2:45PM Oct 20, 2021Observed: 0.81 ft at 3:00PM Oct 20, 2021Observed: 0.82 ft at 3:15PM Oct 20, 2021Observed: 0.8 ft at 3:30PM Oct 20, 2021Observed: 0.81 ft at 3:45PM Oct 20, 2021Observed: 0.81 ft at 4:00PM Oct 20, 2021Observed: 0.82 ft at 4:15PM Oct 20, 2021Observed: 0.81 ft at 4:30PM Oct 20, 2021Observed: 0.83 ft at 4:45PM Oct 20, 2021Observed: 0.81 ft at 5:00PM Oct 20, 2021Observed: 0.82 ft at 5:15PM Oct 20, 2021Observed: 0.79 ft at 5:30PM Oct 20, 2021Observed: 0.8 ft at 5:45PM Oct 20, 2021Observed: 0.81 ft at 6:00PM Oct 20, 2021Observed: 0.81 ft at 6:15PM Oct 20, 2021Observed: 0.81 ft at 6:30PM Oct 20, 2021Observed: 0.84 ft at 6:45PM Oct 20, 2021Observed: 0.81 ft at 7:00PM Oct 20, 2021Observed: 0.8 ft at 7:15PM Oct 20, 2021Observed: 0.8 ft at 7:30PM Oct 20, 2021Observed: 0.81 ft at 7:45PM Oct 20, 2021Observed: 0.81 ft at 8:00PM Oct 20, 2021Observed: 0.81 ft at 8:15PM Oct 20, 2021Observed: 0.82 ft at 8:30PM Oct 20, 2021Observed: 0.81 ft at 8:45PM Oct 20, 2021Observed: 0.82 ft at 9:00PM Oct 20, 2021Observed: 0.8 ft at 9:15PM Oct 20, 2021Observed: 0.8 ft at 9:30PM Oct 20, 2021Observed: 0.81 ft at 9:45PM Oct 20, 2021Observed: 0.82 ft at 10:00PM Oct 20, 2021Observed: 0.81 ft at 10:15PM Oct 20, 2021Observed: 0.81 ft at 10:30PM Oct 20, 2021Observed: 0.84 ft at 10:45PM Oct 20, 2021Observed: 0.82 ft at 11:00PM Oct 20, 2021Observed: 0.81 ft at 11:15PM Oct 20, 2021Observed: 0.81 ft at 11:30PM Oct 20, 2021Observed: 0.8 ft at 11:45PM Oct 20, 2021Observed: 0.82 ft at 12:00AM Oct 21, 2021Observed: 0.82 ft at 12:15AM Oct 21, 2021Observed: 0.79 ft at 12:30AM Oct 21, 2021Observed: 0.8 ft at 12:45AM Oct 21, 2021Observed: 0.81 ft at 1:00AM Oct 21, 2021Observed: 0.81 ft at 1:15AM Oct 21, 2021Observed: 0.8 ft at 1:30AM Oct 21, 2021Observed: 0.81 ft at 1:45AM Oct 21, 2021Observed: 0.79 ft at 2:00AM Oct 21, 2021Observed: 0.82 ft at 2:15AM Oct 21, 2021Observed: 0.8 ft at 2:30AM Oct 21, 2021Observed: 0.82 ft at 2:45AM Oct 21, 2021Observed: 0.8 ft at 3:00AM Oct 21, 2021Observed: 0.79 ft at 3:15AM Oct 21, 2021Observed: 0.82 ft at 3:30AM Oct 21, 2021Observed: 0.81 ft at 3:45AM Oct 21, 2021Observed: 0.82 ft at 4:00AM Oct 21, 2021Observed: 0.79 ft at 4:15AM Oct 21, 2021Observed: 0.81 ft at 4:30AM Oct 21, 2021Observed: 0.8 ft at 4:45AM Oct 21, 2021Observed: 0.82 ft at 5:00AM Oct 21, 2021Observed: 0.82 ft at 5:15AM Oct 21, 2021Observed: 0.81 ft at 5:30AM Oct 21, 2021Observed: 0.8 ft at 5:45AM Oct 21, 2021Observed: 0.82 ft at 6:00AM Oct 21, 2021Observed: 0.82 ft at 6:15AM Oct 21, 2021Observed: 0.83 ft at 6:30AM Oct 21, 2021Observed: 0.81 ft at 6:45AM Oct 21, 2021Observed: 0.83 ft at 7:00AM Oct 21, 2021Observed: 0.8 ft at 7:15AM Oct 21, 2021Observed: 0.83 ft at 7:30AM Oct 21, 2021Observed: 0.84 ft at 7:45AM Oct 21, 2021Observed: 0.83 ft at 8:00AM Oct 21, 2021Observed: 0.8 ft at 8:15AM Oct 21, 2021Observed: 0.84 ft at 8:30AM Oct 21, 2021Observed: 0.8 ft at 8:45AM Oct 21, 2021Observed: 0.8 ft at 9:00AM Oct 21, 2021Observed: 0.8 ft at 9:15AM Oct 21, 2021Observed: 0.82 ft at 9:30AM Oct 21, 2021Observed: 0.82 ft at 9:45AM Oct 21, 2021Observed: 0.82 ft at 10:00AM Oct 21, 2021Observed: 0.84 ft at 10:15AM Oct 21, 2021Observed: 0.83 ft at 10:30AM Oct 21, 2021Observed: 0.81 ft at 10:45AM Oct 21, 2021Observed: 0.82 ft at 11:00AM Oct 21, 2021Observed: 0.8 ft at 11:15AM Oct 21, 2021Observed: 0.8 ft at 11:30AM Oct 21, 2021Observed: 0.84 ft at 11:45AM Oct 21, 2021Observed: 0.83 ft at 12:00PM Oct 21, 2021Observed: 0.82 ft at 12:15PM Oct 21, 2021Observed: 0.81 ft at 12:30PM Oct 21, 2021Observed: 0.8 ft at 12:45PM Oct 21, 2021Observed: 0.8 ft at 1:00PM Oct 21, 2021Observed: 0.82 ft at 1:15PM Oct 21, 2021Observed: 0.81 ft at 1:30PM Oct 21, 2021Observed: 0.8 ft at 1:45PM Oct 21, 2021Observed: 0.82 ft at 2:00PM Oct 21, 2021Observed: 0.8 ft at 2:15PM Oct 21, 2021Observed: 0.8 ft at 2:30PM Oct 21, 2021Observed: 0.83 ft at 2:45PM Oct 21, 2021Observed: 0.84 ft at 3:00PM Oct 21, 2021Observed: 0.83 ft at 3:15PM Oct 21, 2021Observed: 0.81 ft at 3:30PM Oct 21, 2021Observed: 0.81 ft at 3:45PM Oct 21, 2021Observed: 0.81 ft at 4:00PM Oct 21, 2021Observed: 0.81 ft at 4:15PM Oct 21, 2021Observed: 0.82 ft at 4:30PM Oct 21, 2021Observed: 0.84 ft at 4:45PM Oct 21, 2021Observed: 0.81 ft at 5:00PM Oct 21, 2021Observed: 0.83 ft at 5:15PM Oct 21, 2021Observed: 0.82 ft at 5:30PM Oct 21, 2021Observed: 0.82 ft at 5:45PM Oct 21, 2021Observed: 0.82 ft at 6:00PM Oct 21, 2021Observed: 0.81 ft at 6:15PM Oct 21, 2021Observed: 0.83 ft at 6:30PM Oct 21, 2021Observed: 0.85 ft at 6:45PM Oct 21, 2021USGS--Water Resources of the United StatesMBNI2(plotting HGIRG) Graph Created (7:54PM Oct 21, 2021)ObservedLatest observed value: 0.85 ft at 6:45 PM CDT 21-Oct-2021. Flood Stage is 7 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: NAVD88
Metadata
NOTE: Graphical forecasts are not available for the Boone Creek near Mchenry. During times of high water, forecast crest information can be found in the text products.
Return to Area Map
Flood Categories (in feet)
Major Flood Stage: 11
Moderate Flood Stage: 9
Flood Stage: 7
Action Stage: 6
Low Stage (in feet): 0.5

Historic Crests
(1) 7.48 ft on 06/26/2013
(2) 5.68 ft on 09/12/2019
(3) 5.37 ft on 09/27/1986
(4) 5.36 ft on 05/17/2020
(5) 4.87 ft on 06/02/1970
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 5.36 ft on 05/17/2020
(2) 5.68 ft on 09/12/2019
(3) 4.46 ft on 06/27/2018
(4) 4.81 ft on 07/22/2017
(5) 4.43 ft on 07/17/2015
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:14
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
15 Residences may be threatened near the creek and Oakwood Drive in McHenry. Union Pacific Northwest railroad tracks may be threatened in McHenry.
13 IL-120 (Elm Street) may be threatened in McHenry. Oakwood Court and Meadow Lane may be threatened in McHenry.
12 Oakwood Drive may be threatened in McHenry.
10 Commercial structures may be threatened off IL-120 (Elm Street) in McHenry. Numerous residences may be threatened near the creek along Millstream Drive, Grand Avenue, and Clearbrook Drive in McHenry. Bull Valley Road is threatened southwest of McHenry.
8 Dartmoor Drive is threatened in McHenry.
7 Trails are threatened at Whispering Oaks Park in McHenry.
6 Water overtops banks near Whispering Oaks Park in McHenry.
4 Water overtops low-lying banks near the gauge southwest of McHenry.
Low Water Impacts Collapse
If you notice any errors in the below information, please contact our Webmaster
0.5 River nears zero flow.
About This Location Collapse

Latitude: 42.320556° N, Longitude: 88.312778° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 7 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 769.40 776.40 Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available 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
Chicago Weather Forecast Office
333 W. University Dr.
Romeoville, IL 60446
(815) 834-1435
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Page last modified: 2-Nov-2020 7:29 PM
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