Onland Lake is a 47 acre seepage lake with an estimated volume of 669 acre-feet, located in the Township of New Hope. The lake has a maximum depth of 25 feet with a sand and gravel bed, though silt sedimentation has been a problem. The estimated retention time is 3.1 years. A total of 13 species of fish have been reported in Onland Lake since 1949. Northern pike, largemouth bass, and panfish are present. There is a small public boat launch on the southwest side that is somewhat difficult to access due to the narrow, steep, gravel road. The shoreline has residential development primarily on the south and west sides.
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