Now protecting 4,082 acres

By storing and draining water into the ground naturally, Greenseams® helps prevent future flooding and water pollution while supporting and protecting MMSD's structural flood management projects - infrastructure investments worth hundreds of millions of dollars. Greenseams® is an innovative flood management program that permanently protects key lands containing water-absorbing soils.

The program makes voluntary purchases of undeveloped, privately owned properties in areas expected to have major growth in the next 20 years and open space along streams, shorelines, and wetlands.

Totals to date for Greenseams®:

What is Greenseams? A flood management program and so much more.


Take a virtual tour of the Greenseams® properties by selecting one of the counties listed below.

More than 123,000 trees planted

All land acquired will remain undeveloped. Wetlands maintenance and restoration at these sites will provide further water storage. Greenseams® also preserves wildlife habitat and creates recreational opportunities for people living in the region. Where applicable, the properties can be used for hiking, bird watching, and other passive recreation.

The Conservation Fund 

MMSD hired The Conservation Fund to run Greenseams®. It is a national non-profit conservation organization that forges partnerships to protect America's legacy of land and water resources, performs high volume real estate transactions for local land trusts and government agencies throughout the country.

natural spring on Greenseams property

Water flows from a natural spring on Greenseams® Hoerig property


Victory Creek prairie

Greenseams® - Victory Creek in Franklin, WI


group of individuals looking at pond

Guests tour a Greenseams® property in the City of Milwaukee


two deer in forest

You can see all kinds of wildlife on Greenseams® properties