Station Name: LAKE MONONA AT MADISON, WI
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 840 feet

Nearest Address:
795 W Washington Ave
Madison, WI 53715
Dane County

GPS Coordinates: 43.0633297, -89.3970636

Nearby Water Temperatures

Flood Warning issued April 16 at 11:06AM CDT by NWS Milwaukee/Sullivan WI

Effective: Thu April 16, 2026, 11:06 AM
Expires: Thu April 16, 2026, 11:15 PM

...The National Weather Service in Milwaukee/Sullivan WI has issued a Flood Warning for the following river in Wisconsin... Black Earth Creek At Mazomanie affecting Dane County. * WHAT...Minor flooding is occurring. * WHERE...Black Earth Creek at Mazomanie. * WHEN...From this morning until further notice. * ADDITIONAL DETAILS... - At 8:45 AM CDT Thursday the stage was 11.2 feet. - Bankfull stage is 8.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:45 AM CDT Thursday was 13.9 feet. - Forecast...No forecast is available for this location. - Flood stage is 10.0 feet. - Flood History...This crest compares to a previous crest of 11.7 feet on 03/15/2019. - http://www.weather.gov/safety/flood

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Additional information is available at www.weather.gov. The next statement will be issued this evening at 1115 PM CDT.

Flood Watch issued April 16 at 3:11PM CDT until April 18 at 7:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Thu April 16, 2026, 3:11 PM
Expires: Thu April 16, 2026, 11:15 PM

* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of east central, south central, and southeast Wisconsin, including the following counties, in east central Wisconsin, Fond du Lac and Sheboygan. In south central Wisconsin, Dane, Green, Green Lake, Iowa, Lafayette, Marquette and Rock. In southeast Wisconsin, Dodge, Jefferson, Kenosha, Milwaukee, Ozaukee, Racine, Walworth, Washington and Waukesha. * WHEN...From Friday afternoon through Saturday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. * ADDITIONAL DETAILS... - Excessive rain on saturated ground may result in flooding. - http://www.weather.gov/safety/flood

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

Flash Flood Watch issued April 16 at 12:46PM CDT until April 19 at 7:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Thu April 16, 2026, 12:46 PM
Expires: Thu April 16, 2026, 9:00 PM

* WHAT...Flash flooding due to the potential compromise of the Caledonia-Lewiston Levee. The Wisconsin Department of Natural Resources has indicated that the Calendonia-Lewiston Levee along the Wisconsin River may become compromised as the river levels rise. If this takes place, a rapid inundation of water is expected along the south and west side of the river. The City of Portage is not anticipated to be impacted by a potential compromise of the Caledonia-Lewiston Levee. * WHERE...A portion of south central Wisconsin, including the following counties, Columbia and Sauk along the south and west side of the Wisconsin River. Areas affected include, but are not limited to the Pine Island State Wildlife Area and portions of Highway 33. The City of Portage is not anticipated to be impacted by a potential compromise of the Caledonia-Lewiston Levee. * WHEN...Through Sunday morning. * IMPACTS...A compromised levee may result in flash flooding of low-lying areas along the Caledonia-Lewiston Levee. * ADDITIONAL DETAILS... - Excessive rainfall has resulted in very high water level on the Wisconsin River. - http://www.weather.gov/safety/flood

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. PLAN NOW so you will know what to do in an emergency. Keep informed by listening to local radio and television for statements and possible warnings. Follow the advice of public safety officials.

Flood Warning issued April 16 at 10:56AM CDT until April 19 at 5:30AM CDT by NWS Milwaukee/Sullivan WI

Effective: Thu April 16, 2026, 10:56 AM
Expires: Thu April 16, 2026, 11:00 PM

...Forecast flooding changed to Minor severity and increased in duration for the following river in Wisconsin... Baraboo River Near Baraboo affecting Columbia and Sauk Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Baraboo River near Baraboo. * WHEN...Until early Sunday morning. * IMPACTS...At 17.0 feet, If Wisconsin River at Portage up to 17 feet also, water impacts parking lots near Hwy 33 and water over Tritz Rd near Hwy 33. There is widespread flooding of agricultural land. * ADDITIONAL DETAILS... - At 10:00 AM CDT Thursday the stage was 16.4 feet. - Bankfull stage is 14.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:00 AM CDT Thursday was 16.5 feet. - Forecast...The river is expected to rise to a crest of 17.2 feet early tomorrow afternoon. It will then fall below flood stage late Saturday evening. - Flood stage is 16.0 feet. - Flood History...This crest compares to a previous crest of 17.3 feet on 04/15/2014. - http://www.weather.gov/safety/flood

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Additional information is available at www.weather.gov. The next statement will be issued this evening at 1100 PM CDT.

Flood Warning issued April 16 at 10:50AM CDT until April 19 at 1:40AM CDT by NWS Milwaukee/Sullivan WI

Effective: Thu April 16, 2026, 10:50 AM
Expires: Thu April 16, 2026, 11:00 PM

...The Flood Warning continues for the following river in Wisconsin... Wisconsin River At Wisconsin Dells affecting Columbia and Sauk Counties. * WHAT...Minor flooding is occurring and moderate flooding is forecast. * WHERE...Wisconsin River at Wisconsin Dells. * WHEN...Until early Sunday morning. * IMPACTS...At 17.6 feet, Floodwaters affect cabins and trailers southeast of Wisconsin Dells along Levee Road, Van Hoosen Road, Indian Trail Parkway and boat launch, Fish St, Ingebretson Road, Sherri Linn Dr and Norway Drive. Water approaches structures on Rivers Edge Rd. Water from the Wisconsin River backs into Hulburt Creek causing floodwaters to affect the backyards of some businesses in downtown Wisconsin Dells along Highway 13 east of I 90. Water approaches the intersection of Indian Trail and County Rd A. * ADDITIONAL DETAILS... - At 10:00 AM CDT Thursday the stage was 16.3 feet. - Bankfull stage is 13.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:00 AM CDT Thursday was 16.3 feet. - Forecast...The river is expected to rise to a crest of 17.6 feet just after midnight tonight. It will then fall below flood stage Saturday evening. - Flood stage is 16.0 feet. - Flood History...This crest compares to a previous crest of 17.6 feet on 09/27/2010. - http://www.weather.gov/safety/flood

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Additional information is available at www.weather.gov. The next statement will be issued this evening at 1100 PM CDT.