Janesville, located in Gulich Township, Pennsylvania, is a dam regulated by the Pennsylvania Department of Environmental Protection for its recreational purposes. This earth dam, standing at 12 feet high and spanning 390 feet in length, helps control the flow of Little Muddy Run. With a storage capacity of 103 acre-feet and a surface area of 13.3 acres, Janesville serves as a low hazard structure with a condition assessment that is currently not rated.

Despite its low hazard potential, Janesville undergoes regular inspections every five years to ensure its operational integrity. The dam's emergency action plan status, risk assessment, and inundation maps preparedness are currently unknown, indicating a need for further evaluation and potentially enhanced risk management measures. With Glenn Thompson as the local congressional representative and the Baltimore District overseeing its operations, Janesville stands as a vital water resource in Clearfield County, Pennsylvania, for both recreational and environmental conservation purposes.