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Visit for access to new EXPERIMENTAL products and services from the National Water Center: National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook and the National Water Center Visualization Services, a suite of geospatial services depicting River Forecast Center and National Water Model information.

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Hydrograph River at a Glance Download
Rock River at Inflow Lake Koshkonong Inflow Discharge (kcfs)Forecast: 1.69 kcfs 12:00AM Feb 08, 2023Forecast: 1.73 kcfs 6:00AM Feb 08, 2023Forecast: 1.77 kcfs 12:00PM Feb 08, 2023Forecast: 1.81 kcfs 6:00PM Feb 08, 2023Forecast: 1.84 kcfs 12:00AM Feb 09, 2023Forecast: 1.89 kcfs 6:00AM Feb 09, 2023Forecast: 2.04 kcfs 12:00PM Feb 09, 2023Forecast: 2.36 kcfs 6:00PM Feb 09, 2023Forecast: 2.83 kcfs 12:00AM Feb 10, 2023Forecast: 3.39 kcfs 6:00AM Feb 10, 2023Forecast: 3.92 kcfs 12:00PM Feb 10, 2023Forecast: 4.35 kcfs 6:00PM Feb 10, 2023Forecast: 4.67 kcfs 12:00AM Feb 11, 2023Forecast: 4.88 kcfs 6:00AM Feb 11, 2023Forecast: 5 kcfs 12:00PM Feb 11, 2023Highest Forecast: 5.05 kcfs 6:00PM Feb 11, 2023Forecast: 5.04 kcfs 12:00AM Feb 12, 2023Forecast: 5 kcfs 6:00AM Feb 12, 2023Forecast: 4.93 kcfs 12:00PM Feb 12, 2023Forecast: 4.85 kcfs 6:00PM Feb 12, 2023Forecast: 4.76 kcfs 12:00AM Feb 13, 2023Forecast: 4.67 kcfs 6:00AM Feb 13, 2023Forecast: 4.6 kcfs 12:00PM Feb 13, 2023Forecast: 4.53 kcfs 6:00PM Feb 13, 2023Forecast: 4.48 kcfs 12:00AM Feb 14, 2023Forecast: 4.43 kcfs 6:00AM Feb 14, 2023Forecast: 4.4 kcfs 12:00PM Feb 14, 2023Forecast: 4.37 kcfs 6:00PM Feb 14, 2023NVIW3 Graph Created (10:00PM Feb 7, 2023)Forecast (issued 6:29PM Feb 7)
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Tabular Data (UTC)
Tabular Data (CST)
XML Data
RSS Files
Datum: NAVD88
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 at Inflow Lake Koshkonong are issued routinely year-round.

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Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 0
Flood Stage: 0
Action Stage: 9
Low Stage (in feet): -9999

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.
Zoom Level:16
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Gauge LocationGauge Map Marker
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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Latitude: 42.857500° N, Longitude: 88.940900° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft Not Available Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(gauge height = flood stage)
Elevation information source
NAVD88 769.77 ft 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:

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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
Milwaukee/Sullivan Weather Forecast Office
N3533 Hardscrabble Road
Dousman, WI 53118
(262) 965-2074
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Page last modified: 2-Nov-2020 7:29 PM
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