The volume of water being pumped from Hiawatha Golf Course is enough to flood the course and seep into as many as 18 nearby houses, according to an evaluation commissioned by the Minneapolis Park Board as it weighs the course's future.
Park officials outlined the findings in two community meetings this week. They also asked residents for more information about seepage they've already experienced, in hopes of better understanding what would happen if the two pumps draining ponds at the golf course were turned off.
Drainage problems at the course arose two years ago when torrential rains coursing down Minnehaha Creek into Lake Hiawatha drowned much of the golf course. That led to the discovery that park officials were pumping seven times the state-permitted amount of water from stormwater ponds on the course into Lake Hiawatha.
The Park Board now is working with the city and Minnehaha Creek Watershed District to explore options to remedy the situation involving both continuing to pump and turning off the pumps. The Minnesota Department of Natural Resources (DNR) determines who may pump groundwater.
Joe Richter, DNR groundwater appropriations hydrologist, said the potential flooding of basements strengthens the Park Board's case for continuing to pump. The area where homes are potentially at risk is near the intersection of 19th Avenue S. and E. 44th Street.
"We don't want homes to flood. We don't want people to have problems," he said Wednesday.
The news was unsettling to some of the homeowners. Elizabeth Scott and James Houston said they pumped groundwater out of their basement for about four months after the 2014 rains. Scott said she was astounded that water conditions in the area around their 1970s-era house hadn't been measured previously.
Area Park Commissioner Steffanie Musich said she can't predict how the board will vote on seeking a permit to keep pumping. The board voted unanimously in 2014 to sue a developer who was pumping groundwater into the Chain of Lakes without a state permit.