Lake Roland is a city/county park encompassing over 500 acres of woodland, wetlands, serpentine barrens, rare plants and rocky plateaus surrounding Lake Roland in Baltimore County, Maryland. The park is located near the intersection of Falls Road and Lake Avenue, adjacent to the Falls Road Light Rail Stop of the Baltimore Light Rail, which runs from Cromwell Station near Glen Burnie in Anne Arundel County in the south to Hunt Valley of Baltimore County. The line runs along a railroad embankment and trestle over the lake above the dam, cutting the park into a two-thirds wooded northern part and the one-third southern portion around the dam, picnic groves, pavilion and pumping station.Though the park is located just outside the northern limits of Baltimore City, it is owned by the city and operated as a park since the 1920s by the Baltimore City Department of Recreation and Parks and is now leased to neighboring Baltimore County and operated by their parks agency, in a similar arrangement to the situation with Fort Smallwood Park, several miles southeast of the city along the Patapsco River's south shore in Anne Arundel County, and transferred for lease to that suburban county's jurisdiction. After years of disrepair, the park was temporarily closed on December 16, 2009, when Baltimore County assumed operation of the Park for which Baltimore City's government still "retains title," for $6 million in extensive renovation, working with the Wallace Montgomery and Human & Rohde, Inc. construction companies, including "pavilions, playgrounds, trails, bridges and even a dog park." Under the new administration of Baltimore County's Parks and Recreation, the park was reopened to the public on Friday, October 14, 2011.