Major Flood
21 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
18 ft
Minor Flood
13.5 ft
Action Stage
9.5 ft
What Floods at Each Level
24 ft
Some homes in the Martintown area have floodwaters in their first floors sustaining major damage. Martintown Road and West River Road are flooded. Upstream in Browntown, Hwy 11, Highway MM and West Indies Road are flooded. Highway 73 is flooded about 1 mile downstream in Winslow Illinois.
23 ft
Some homes in the Martintown area have floodwaters in their first floors sustaining major damage. Martintown Road and West River Road in Martintown are flooded. Upstream in Browntown, Hwy 11, Highway MM and West Indies Road are flooded. Highway 73 downstream in Winslow Illinois is flooded.
22 ft
Some homes in the Martintown area have floodwaters in their basements and first floors sustaining major damage. Martintown Road and West River Road in Martintown are flooded. Upstream in Browntown, Hwy 11, Highway MM and West Indies Road are flooded. Highway 73 about 1 mile downstream in Winslow Illinois is flooded.
21 ft
Some homes in the Martintown area have floodwaters in their basements and first floors. Martintown Road and West River Road in the Martintown area are flooded. Hwy 11, Highway MM and West Indies Road upstream in Browntown are flooded. Highway 73 about 1 mile downstream in Winslow Illinois is flooded.
19.5 ft
Some homes in Martintown area have floodwaters in their basements and first floors, Highways MM and West Indies Road upstream in the Browntown area are flooded. Martintown Road and West River Road in Martintown are flooded as is Highway 73 about 1 mile downstream in Winslow Illinois.
18.5 ft
Some homes in the Martintown area have floodwaters in their basements and first floors. Martintown Road and West River Road are flooded. Upstream in Browntown, Highway MM and West Indies Road are flooded. About 1 mile downstream in Winslow, Illinois, Highway 73 is flooded.
18 ft
Floodwaters are in the basements of some homes in the Martintown area. Martintown Road and West River Road are flooded. Upstream in Browntown, Highway MM and West Indies Road are flooded. About 1 mile downstream in Winslow, Illinois, Highway 73 is flooded.
17.5 ft
Floodwaters are in the back years of some homes in the Martintown area. Martintown Road and West River Road are flooded. Upstream in Browntown, Highway MM and West Indies Road are flooded. About 1 mile downstream in Winslow Illinois, Highway 73 is flooded.
16.5 ft
Floodwaters are in the back yards of some homes in Martintown. Floodwaters affect Martintown Road and West River Road in the Martintown area. Upstream in Browntown, floodwaters affect Highway MM and West Indies Road.
16 ft
Floodwaters are in the back yard of at least one home in Martintown. Floodwaters affect Martintown Road and West River Road in the Martintown area. Upstream in Browntown, floodwaters affect Highway MM and West Indies Road.
13.5 ft
Floodwaters affect Martintown Road and West River Road in the Martintown area. Upstream in Browntown, floodwaters affect highway MM and West Indies Road.
13 ft
Tillable farmland is flooded.
11 ft
There is minor lowland flooding.
9.5 ft
There is minor lowland flooding.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Mar 16, 2019 | 22.41 ft | 16,500 cfs |
| Jun 30, 1969 | 21.46 ft | 15,100 cfs |
| Jun 30, 1990 | 20.98 ft | 12,000 cfs |
About This Gauge
USGS Site
NWS LID
MTNW3
River
Pecatonica River
County
Green, WI
Coordinates
42.5106°N, 89.8011°W
Get Flood Alerts for Pecatonica River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Pecatonica River at Martintown?
The Pecatonica River at Martintown gauge is maintained by USGS (site 05434500) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Pecatonica River at Martintown?
The NWS-defined flood stage for Pecatonica River at Martintown is 13.5 feet. Action stage begins at 9.5 feet. Moderate flooding starts at 18 feet, and major flooding at 21 feet.
How do I get alerts when Pecatonica River rises?
Download StormCast free on Google Play, go to River Gauges, and add Pecatonica River at Martintown to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the Pecatonica River at Martintown gauge located?
The gauge is located in Green County, Wisconsin at coordinates 42.5106°N, 89.8011°W. USGS site number: 05434500. Data is provided by the U.S. Geological Survey and the National Weather Service.
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Source & Notes
Data provided by: Observations courtesy of U.S. Geological Survey
- 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.
- 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.