Spring Lake is a 72-acre lake fed by underground spring that is located inside Spring Lake Regional Park in Sonoma County, California. The park is a popular local spot for swimming during the summer months and is open seasonally from Memorial Day to Labor Day. There are marked swimming areas and a very popular floating, inflatable playground that is suitable for ages 6 and up. Boating is permitted year round with the exception of the swimming lagoon area. Fishing, camping, picnicking, biking, and hiking are all popular activities within the park as well. The park is also home to a small natural science museum called the Environmental Discovery Center where kids can learn about natural history and the habitats that exist in the park.

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