Reservoir Volumes and Storage for Drought Monitoring as of January 31, 2017

Storage in selected Maryland reservoirs for the end of January, 2017

Water System Reservoir Percent Full* Days of Storage**

City of Frostburg

Piney **** ****
City of Cumberland Lake Gordon 100% 428
Lake Koon 98%

City of Baltimore

Liberty 89% 315
Loch Raven 100%
Prettyboy 88%
Total 92%


Triadelphia Reservoir 54% 107
Rocky Gorge/Duckett
Seneca Creek Reserve 100% NA
All Potomac River Plants Jennings-Randolph Reserve*** 100% NA

* Percent Full is the ratio of current volume to the maximum usable volume in each reservoir at the end of the month.

** Days of Storage is the amount of days it would take to use current volume of reservoir (w/o recharge) based on average raw water withdrawals from similar time frame from previous two years.

*** Percent full for Jennings-Randolph Reservoir is based on alloted amount of water in reservoir used to supplement Potomac River flow for drinking water purposes.

****Not available as of 2017-Feb-09 at 8:00 AM

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For More Information

Please contact the Water Supply Program at or 410-537-3702