Mendota-Grassman Greenway Flood Mitigation and Restoration Design
The project schedule has been delayed. The project will not be constructed until 2023 at the earliest, and the City will host an additional public meeting with more information in the coming months.
The City of Madison, like many communities, has seen a recent increase in extreme flood events. This increase has occurred most notably in Madison since 2016, when a large and intense rain event in late July caused extensive flooding of public and private property on Madison’s west side. Large events in July 2017 and June 2018 caused similar flooding, again largely focused on Madison’s west side.
On August 20, 2018, Dane County experienced an unusual precipitation event that caused flooding in excess of that seen in any of the prior events mentioned. Rain gages monitoring that event registered between 8-10” of precipitation on its west side over (approximately) a 12-hr period. Many of Madison’s west side neighborhoods experienced flash flooding, resulting in millions of dollars in property damage.
In response to the damage incurred, as well as the likely increasing frequency of such events due to global climate change, the Madison Common Council authorized the City of Madison Engineering Division (City Engineering) to develop watershed models and plans for watersheds of greatest concern in the Madison area. The redesign of this greenway system is a solution resulting from of one of these studies.
In the spring of 2021 the City will finish a watershed study for the Stricker’s/Mendota watershed that encompasses this area. The purpose of that study is to evaluate existing conditions in the watershed and look for solutions for flood reduction. Homes adjacent to this greenway have repeatedly flooded in the past and the preliminary proposed solutions for this watershed study indicate the best solution for this area is to maximize conveyance.Due to the chronic flooding in this neighborhood, the fact that the City had budgeted a project in this greenway prior to the watershed study, and the minimal variables that could impact the design possibilities as the watershed study refines the solutions, the City has decided to hire a consultant to work on the design of this greenway in earnest. The City of Madison has hired MSA complete the flood mitigation and restoration design starting in December of 2020.
View full Mendota Grassman Greenway System Project Area map.
Along the greenway that runs southwest to northeast from Old Middleton Road to Lake Mendota.
Between Baker Avenue and Heim/Camelot Drive
The tentative schedule will be to host a series of public meetings in 2021 and 2022 while a design is finalized and permitted. The greenway will be constructed in 2023.
There are a number of points of contact during this project where the public is encouraged to give feedback as part of public information meetings and public hearings. Dates, times and locations are indicated below:
Public Information Meetings
City Process, Meetings
Board of Public Works: TBA
Common Council: TBA
*Note: Registering to speak is only necessary for Common Council and Board of Public Works Meetings. You do not need to register to speak at Public Information Meetings. Simply attend with registration, and you'll have an opportunity to share feedback and ask questions.