City of Davenport issued the following announcement on July 20.
The City of Davenport is reporting the discovery of a sanitary sewer overflow this afternoon, Tuesday, July 20, 2021. The overflow is located on Walnut Creek near Blue Grass Rd. The overflow is the result of a blockage that may have resulted in pipe failure. A contractor is being secured to make pipe repairs.
The City advises all individuals to avoid Walnut Creek from Blue Grass Rd downstream to Black Hawk Creek.
The issue has been reported to the Iowa DNR.
Original source can be found here.