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. Marsh Creek State Park is 2 miles (3.2 km) west of Eagle on Pennsylvania Route 100. Park road hours 8:00 am until sunset. All other access open 24 hours.