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Hydrograph River at a Glance Download
Fox River at McHenry Lock/Dam Tailwater (ft)Observed: 1.91 ft at 7:00PM Oct 19, 2014Observed: 1.89 ft at 7:30PM Oct 19, 2014Observed: 1.93 ft at 8:00PM Oct 19, 2014Observed: 1.92 ft at 9:00PM Oct 19, 2014Observed: 1.92 ft at 10:00PM Oct 19, 2014Observed: 1.93 ft at 10:30PM Oct 19, 2014Observed: 1.91 ft at 11:00PM Oct 19, 2014Observed: 1.91 ft at 11:30PM Oct 19, 2014Highest Observation: 1.94 ft at 12:00AM Oct 20, 2014Observed: 1.91 ft at 12:30AM Oct 20, 2014Observed: 1.9 ft at 1:00AM Oct 20, 2014Observed: 1.91 ft at 1:30AM Oct 20, 2014Observed: 1.91 ft at 2:00AM Oct 20, 2014Observed: 1.92 ft at 2:30AM Oct 20, 2014Observed: 1.91 ft at 3:00AM Oct 20, 2014Observed: 1.92 ft at 3:30AM Oct 20, 2014Observed: 1.91 ft at 4:00AM Oct 20, 2014Observed: 1.93 ft at 4:30AM Oct 20, 2014Observed: 1.92 ft at 5:00AM Oct 20, 2014Observed: 1.91 ft at 5:30AM Oct 20, 2014Observed: 1.92 ft at 6:00AM Oct 20, 2014Observed: 1.92 ft at 6:30AM Oct 20, 2014Observed: 1.93 ft at 7:00AM Oct 20, 2014Observed: 1.89 ft at 7:30AM Oct 20, 2014Observed: 1.93 ft at 8:00AM Oct 20, 2014Observed: 1.92 ft at 8:30AM Oct 20, 2014Observed: 1.91 ft at 9:00AM Oct 20, 2014Observed: 1.91 ft at 9:30AM Oct 20, 2014Observed: 1.92 ft at 10:00AM Oct 20, 2014Observed: 1.89 ft at 10:30AM Oct 20, 2014Observed: 1.89 ft at 11:00AM Oct 20, 2014Observed: 1.87 ft at 11:30AM Oct 20, 2014Observed: 1.87 ft at 12:00PM Oct 20, 2014Observed: 1.88 ft at 12:30PM Oct 20, 2014Observed: 1.92 ft at 1:00PM Oct 20, 2014Observed: 1.92 ft at 1:30PM Oct 20, 2014Observed: 1.85 ft at 2:00PM Oct 20, 2014Observed: 1.88 ft at 2:30PM Oct 20, 2014Observed: 1.86 ft at 3:00PM Oct 20, 2014Observed: 1.85 ft at 3:30PM Oct 20, 2014Observed: 1.86 ft at 4:00PM Oct 20, 2014Observed: 1.87 ft at 4:30PM Oct 20, 2014Observed: 1.88 ft at 6:00PM Oct 20, 2014Observed: 1.87 ft at 6:15PM Oct 20, 2014Observed: 1.87 ft at 6:45PM Oct 20, 2014Observed: 1.91 ft at 7:15PM Oct 20, 2014Observed: 1.92 ft at 7:45PM Oct 20, 2014Highest Observation: 1.94 ft at 8:45PM Oct 20, 2014Observed: 1.9 ft at 9:45PM Oct 20, 2014Observed: 1.9 ft at 10:15PM Oct 20, 2014Observed: 1.85 ft at 10:45PM Oct 20, 2014Observed: 1.85 ft at 11:15PM Oct 20, 2014Observed: 1.86 ft at 11:45PM Oct 20, 2014Observed: 1.89 ft at 12:15AM Oct 21, 2014Observed: 1.9 ft at 12:45AM Oct 21, 2014Observed: 1.89 ft at 1:15AM Oct 21, 2014Observed: 1.91 ft at 1:45AM Oct 21, 2014Observed: 1.91 ft at 2:15AM Oct 21, 2014Observed: 1.87 ft at 2:45AM Oct 21, 2014Observed: 1.86 ft at 3:15AM Oct 21, 2014Observed: 1.86 ft at 3:45AM Oct 21, 2014Observed: 1.87 ft at 4:15AM Oct 21, 2014Observed: 1.87 ft at 4:45AM Oct 21, 2014Observed: 1.87 ft at 5:15AM Oct 21, 2014Observed: 1.87 ft at 5:45AM Oct 21, 2014Observed: 1.89 ft at 6:15AM Oct 21, 2014Observed: 1.86 ft at 6:45AM Oct 21, 2014Observed: 1.87 ft at 7:15AM Oct 21, 2014Observed: 1.87 ft at 7:45AM Oct 21, 2014Observed: 1.9 ft at 8:15AM Oct 21, 2014Observed: 1.87 ft at 8:45AM Oct 21, 2014Observed: 1.88 ft at 9:15AM Oct 21, 2014Observed: 1.85 ft at 9:45AM Oct 21, 2014Observed: 1.87 ft at 10:15AM Oct 21, 2014Observed: 1.86 ft at 10:45AM Oct 21, 2014Observed: 1.85 ft at 11:15AM Oct 21, 2014Observed: 1.82 ft at 11:45AM Oct 21, 2014Observed: 1.87 ft at 12:15PM Oct 21, 2014Observed: 1.9 ft at 12:45PM Oct 21, 2014Observed: 1.87 ft at 1:15PM Oct 21, 2014Observed: 1.87 ft at 1:45PM Oct 21, 2014Observed: 1.87 ft at 2:15PM Oct 21, 2014Observed: 1.84 ft at 2:45PM Oct 21, 2014Observed: 1.87 ft at 3:15PM Oct 21, 2014Observed: 1.86 ft at 3:45PM Oct 21, 2014Observed: 1.86 ft at 4:15PM Oct 21, 2014Observed: 1.86 ft at 4:45PM Oct 21, 2014Observed: 1.85 ft at 5:15PM Oct 21, 2014Observed: 1.9 ft at 5:45PM Oct 21, 2014Observed: 1.93 ft at 6:15PM Oct 21, 2014Observed: 1.92 ft at 6:45PM Oct 21, 2014Observed: 1.9 ft at 7:15PM Oct 21, 2014Observed: 1.85 ft at 7:45PM Oct 21, 2014Observed: 1.89 ft at 8:15PM Oct 21, 2014Observed: 1.86 ft at 8:45PM Oct 21, 2014Observed: 1.84 ft at 9:15PM Oct 21, 2014Observed: 1.85 ft at 9:45PM Oct 21, 2014Observed: 1.8 ft at 10:15PM Oct 21, 2014Observed: 1.86 ft at 10:45PM Oct 21, 2014Observed: 1.84 ft at 11:15PM Oct 21, 2014Observed: 1.83 ft at 11:45PM Oct 21, 2014Observed: 1.93 ft at 12:15AM Oct 22, 2014Observed: 1.86 ft at 12:45AM Oct 22, 2014Observed: 1.89 ft at 1:15AM Oct 22, 2014Observed: 1.88 ft at 1:45AM Oct 22, 2014Observed: 1.92 ft at 2:15AM Oct 22, 2014Observed: 1.89 ft at 2:45AM Oct 22, 2014Observed: 1.9 ft at 3:15AM Oct 22, 2014Observed: 1.9 ft at 3:45AM Oct 22, 2014Observed: 1.9 ft at 4:15AM Oct 22, 2014Observed: 1.87 ft at 4:45AM Oct 22, 2014Observed: 1.93 ft at 5:15AM Oct 22, 2014Observed: 1.8 ft at 5:45AM Oct 22, 2014Observed: 1.78 ft at 6:15AM Oct 22, 2014Observed: 1.82 ft at 6:45AM Oct 22, 2014Observed: 1.79 ft at 7:15AM Oct 22, 2014Observed: 1.81 ft at 7:45AM Oct 22, 2014Observed: 1.8 ft at 8:15AM Oct 22, 2014Observed: 1.83 ft at 8:45AM Oct 22, 2014Observed: 1.74 ft at 9:15AM Oct 22, 2014Observed: 1.8 ft at 9:45AM Oct 22, 2014Observed: 1.8 ft at 10:15AM Oct 22, 2014Observed: 1.75 ft at 10:45AM Oct 22, 2014Observed: 1.83 ft at 11:15AM Oct 22, 2014Observed: 1.8 ft at 11:45AM Oct 22, 2014Observed: 1.82 ft at 12:15PM Oct 22, 2014Observed: 1.8 ft at 12:45PM Oct 22, 2014Observed: 1.86 ft at 1:15PM Oct 22, 2014Observed: 1.79 ft at 1:45PM Oct 22, 2014Observed: 1.84 ft at 2:15PM Oct 22, 2014Observed: 1.79 ft at 2:45PM Oct 22, 2014Observed: 1.84 ft at 3:15PM Oct 22, 2014Observed: 1.82 ft at 3:45PM Oct 22, 2014Observed: 1.78 ft at 4:15PM Oct 22, 2014Observed: 1.78 ft at 4:45PM Oct 22, 2014Observed: 1.76 ft at 5:15PM Oct 22, 2014Observed: 1.85 ft at 5:45PM Oct 22, 2014USGS--Water Resources of the United StatesMHYI2(plotting HTIRP) Graph Created (6:50PM Oct 22, 2014)ObservedLatest observed value: 1.85 ft at 5:45 PM CDT 22-Oct-2014. Flood Stage is 4 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Gauge reading affected by reservoir operations.

NOTE: Forecasts are not available for the Fox River at McHenry Lock/Dam. Only observed stages are available for this point.

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Upstream Gauge - near Antioch Upstream Gauge Downstream Gauge Downstream Gauge - at Algonquin
Flood Categories (in feet)
Major Flood Stage:7
Moderate Flood Stage:6
Flood Stage:4
Action Stage:3.5

Historical Crests
(1) 7.62 ft on 04/23/2013
(2) 7.20 ft on 10/02/1986
(3) 7.04 ft on 04/02/1979
(4) 6.95 ft on 08/27/2007
(5) 6.90 ft on 04/24/1993
Show More Historical 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.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
5 damage begins to residences in Frisch's Riverside subdivision along Lagoon and River Shore Drives
4.5 damage begins to residences in Holiday Hills subdivison along Holiday Drive
About This Location Collapse

Latitude: 42.309167° N, Longitude: 88.251389° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 4 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 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:

Additional Information Collapse
River forecasts are not available for this location.
IDNR/OWR Operations of Stratton Dam
Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
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: 27-Aug-2014 7:11 PM
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