Lake Bernard Frank
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Lake Bernard Frank, commonly called Lake Frank, is a 54 acre man-made lake in Derwood, Maryland just north of Rockville. It is located on Rock Creek. Its boundaries are, approximately, Route 28, Avery Road, and Muncaster Mill Road. Lake Frank was created in 1966 to aide in flood and sediment control, as well as to provide recreation. It has an earthen dam, installed in 1967, on its southern side. It was created as a sister lake to Lake Needwood. Lake Frank is owned by the M-NCPPC.
The lake's secluded location within Rock Creek Park is another of its assets. Visitors to the lake must bike or walk about 1/4 of a mile from all parking lots to get to the lakeshore. The Lake Frank & Meadowside Trails surround the lake, making it a favorite hiking spot. Also, locals enjoy fishing from the shoreline, though a license is needed to do so. However, swimming, boating, and ice skating are prohibited.
Recently, pollution of the lake has been slowing, in contrast to previous years. In 1998, Lake Frank was listed as "impaired by nutrients" on the list of impaired surface waters. Currently, the lake is listed as eutrophic, and has been since 2003. [1]