The risk for flash flooding remains high this afternoon and into the evening, according to Bryan Johnson of the Madison Streets Division.
Madison residents in areas at risk of flash flooding should be prepared.
Sandbag barriers should remain in place and vehicles should not be parked in low-lying areas, according to Johnson.
He confirmed the water flowage from the Tenny Park dam at Lake Mendota was increased into the Yahara River to Lake Monona to mitigate the rainfall from Saturday night/Sunday morning.
This could mean more street flooding in the Isthmus and lane closures, especially in the East Washington Ave. and First St. area, according to Johnson.
The city is also watching for another round of flash flooding if the expected rainfall this evening into Monday is moderate to heavy.
Lake Monona is at a new historic high, and water flow through the Tenney Dam will be increased today to mitigate the rainfall received last night.
The National Weather Service forecasts show more rain today, including a chance of thunderstorms.
The City of Madison Flooding website has the most current maps for areas at risk of flash flooding and information regarding road and lane closures, says Johnson.
Updates of conditions are shared through the City of Madison Twitter and Facebook accounts, and individuals can sign up to receive email updates on conditions at the flooding website, www.cityofmadison.com/flooding.
For more on this story: http://www.wkow.com/story/39010580/2018/09/02/overnight-rain-causes-more-flooding-on-both-sides-of-madison