weekends Loch Raven Drive between Morgan Mill Road and Providence Road are closed to cars to allow use by pedestrians. However, because the reservoir is used to provide drinking water, swimming in it is prohibited. Officers of the Watershed Police of the Baltimore City Department of Public Works patrol the reservoir and its surroundings. References External links "The River You Drink", an interesting perspective on the history of the Gunpowder, which feeds into the reservoir, 5 part series from the evening Baltimore Sun Loch Raven local community advocacy group Loch Raven Reservoir on Google Street View "A short video of Loch Raven" Metro Reservoir Anglers, Inc. Protected areas of Baltimore County, Maryland Chesapeake Bay watershed Reservoirs in Maryland Bodies of water of Baltimore County, Maryland