Reservoir Volumes and Storage for Drought Monitoring as of September 2014

Water System Reservoir Percent Full* Days of Storage**

City of Frostburg

Piney **** ***
City of Cumberland Lake Gordon **** ****
Lake Koon ****

City of Baltimore

Liberty 96% 357
Loch Raven 98%
Prettyboy 99%
Total 97%


Triadelphia Reservoir 82% 133
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.

**** Storage is not available as of 2014-10-07, but Cumberland had 400 days of storage at the end of July and Frostburg had 367 days of storage at the end of August

Related Topics

Drought Home
Drought Coordinators

For More Information

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