Reservoir Volumes and Storage for Drought Monitoring as of November 30, 2016

Storage in selected Maryland reservoirs for the end of November, 2016

Water System Reservoir Percent Full* Days of Storage**

City of Frostburg

Piney 99% 621
City of Cumberland Lake Gordon 100% 301
Lake Koon 62%

City of Baltimore

Liberty 84% 305
Loch Raven 95%
Prettyboy 83%
Total 87%


Triadelphia Reservoir 53% 109
Rocky Gorge/Duckett
Seneca Creek Reserve 99% 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.

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