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Maryland Lakes, Rivers and Water Resources

Maryland Lakes and Rivers Map
Maryland Rivers Shown on the Map:   Chester River, Choptank River, Monocacy River, Nanticoke River, Patuxent River, Pocomoke River, Potomac River and Youghiogheny River.

Maryland Lakes Shown on the Map:   Deep Creek Lake, Liberty Lake, Loch Raven Reservoir, Prettyboy Reservoir and Triadelphia Reservoir.

 Maryland Stream and River Levels
Maryland river levels map
The United States Geological Survey has a number of stream gages located throughout Maryland. These estimate stream levels, discharges and record them over time. This data is published on the web and many stations allow users to plot custom graphs. Get updated Maryland river and stream levels from USGS here.

 Maryland Stream and River Level Alerts
Maryland water level alerts
The United States Geological Survey has a system that will send you an email message when flood levels are reached on any steam with USGS gaging equipment that you have selected. Sign up here to recieve Maryland stream and river level alerts.

 Maryland Water Publications
Maryland precipitation map
The United States Geological Survey has a number of publications related to water use and water resources in Maryland. View the water resource publications for Maryland here.

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 Maryland Drought Map
Maryland drought map
The United States Geological Survey publishes updated drought maps on their website. There you can view a map that shows where below normal 7-day average stream flow conditions were recently recorded. The maps are updated daily. Get a current Maryland drought map here.

 Maryland Precipitation Map
Maryland precipitation map
The National Atlas Project has precipitation maps for Maryland and other states that you can view online or print for personal use. These maps show the average annual precipitation levels mapped across the state. View and print an Maryland precipitation map here. Precipitation maps prepared by the PRISM Climate Group at Oregon State University and the United States Geological Survey.

 Maryland Elevation Map
Maryland elevation map
The topography of an area determines the direction of stream flow and often is a primary influence on the geographic distribution of precipitation. View a detailed Maryland elevation map.

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