Spring Meadow Lake State Park
Swimming
Helena, MT (nearest city)
Spring Meadow Lake State Park is a public recreation area covering 61 acres just west of Helena, Montana. Once the site of a gravel pit and factory, the state park centers around a man-made, spring-fed lake, which is used for swimming, fishing, non-motorized boating, and scuba diving.
https://www.visitmt.com/listings/general/state-park/spring-meadow-lake-state-park.html