Reservoir Volumes and Storage for Drought Monitoring as of August 2014

Water System Reservoir Percent Full* Days of Storage**

City of Frostburg

Piney 99% 567
City of Cumberland Lake Gordon **** ****
Lake Koon ****

City of Baltimore

Liberty 99% 352
Loch Raven 100%
Prettyboy 99%
Total 99%


Triadelphia Reservoir 92% 151
Rocky Gorge/Duckett
Seneca Creek Reserve 98% 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.

**** Information not available as of 2014-09-23, but Cumberland had 400 days of storage as of 2014-07-28

Related Topics

Drought Home
Drought Coordinators

For More Information

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