Marsh Creek Winter Hike on snow covered trails.

Marsh Creek State Park is a 1,705 acres (690 ha) Pennsylvania state park in Upper Uwchlan and Wallace Townships, Chester County, Pennsylvania in the United States. The park is the location of the 535-acre (217 ha) man-made Marsh Creek Lake. With an average depth of 40 feet (73 feet at its deepest), the lake is stocked with fish and is a stop for migrating waterfowl.

Milford Mills was a village in the Marsh Creek Valley of Chester County, Pennsylvania that was inundated by the construction of the Marsh Creek Dam in 1972.Milford Mills was one of several farming villages settled by Welsh, Scots-Irish and English in the first quarter of the 18th century in Upper Uwchlan Township.

Marsh Creek Lake is a man-made lake that resulted from the construction of a dam across Marsh Creek, filling a valley that prompted the relocation of residents from Milford Mills, Pennsylvania to higher ground. The reasons for creating the lake were "... frequent flooding, water shortages and lack of recreational opportunities for nearby population centers...."The lake is bordered by Marsh Creek State Park to the east and Lyndell, Pennsylvania to the west.