Willow Creek is located in the southern metropolitan area. It begins at Lee and Keller lakes, and runs through a storm sewer system and Sunset Pond, eventually descending a bluff and flowing through an underground culvert near the Kraemer Quarry before entering the Minnesota River.Willow Creek below Hwy 13, River Mile 1 was monitored as part of WOMP (Watershed Outlet Monitoring Program) until 2009. It measured the water quality of Willow Creek before it enters into the Minnesota River. Samples are collected at regular intervals for baseflow and also during storm events. This station also has automatic monitoring equipment which takes measurements every 15 minutes. This continuous data can be found under the "Time Series" dropdown in the "Data Collected" section located farther down on this webpage.