The City of Madison Engineering Division has, over the years as the City has expanded, installed six storm water detention ponds on UW-Madison Arboretum property. This is Pond #5 on Monroe Street.
City of Madison storm water detention Pond #5 looking NW towards Monroe Street. The woody debris on top of the concrete culvert is not the work of beaver but marks the high water mark from this summer’s storms.
The storm water pond in Curtis Prairie is #1 (the first constructed); Pond #6 (formerly known as Secret Pond) is at the intersection of Nakoma Road and Manitou Way.
One of two storm water outlets in Pond #5 that direct storm water into the UW-Madison Arboretum’s West Marsh.
The City of Madison’s six storm water detention ponds occupy over 25 acres in the UW-Madison Arboretum.
Storm water as it flows out of Pond #5 towards the Arboretum’s West Marsh. Notice the oily sheen on the water. And this is how the water looks after “treatment” in the pond.
What is the bubbly, chocolate-colored substance (right center) floating on the surface?
Storm water flowing through a patch of reed canary grass on its way into West Marsh.
Because of the heavy rain overnight (2″ by 8am) and continuing this morning, the water level in the pond is likely to rise.
Green vegetation in lower left corner is garlic mustard; invasive cattails in the middle right.
Looking NW towards Monroe Street and its intersection with Glenway Street. The red awnings belong to the Gates and Brovi restaurant.