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Storm Update - August 2021

08/13/21 12:00:pm
mmsd rain gauge data of milwaukee

MMSD is sending the two PDF documents below to the Wisconsin Department of Natural Resources regarding sewer overflows that took place from the regional sewer system on August 8 & 9.

Isolated sewer overflows also took place in some local sewer systems that are owned by municipalities.

Prior to recent heavy rain, the region was 10 inches under normal rainfall for the year.

Combined Sewer Overflow 380 million gallons.

Separate Sewer Overflow 10.5 million gallons.

DNR Letter for:

Combined Sewer Overflow

Separate Sewer Overflows

One inch of rain on MMSD’s service area equals 7.1 billion gallons.

mmsd overflow graphic august 2021