Reservoir Volumes and Storage for Drought Monitoring as of July 31, 2021

​​Storage in selected Maryland reservoirs for the end of July 2021

 
Water System Reservoir Percent Full* Days of Storage**
City of Frostburg
Piney 99%
598




City of Cumberland Lake Gordon 100%
340****
Lake Koon 73%




100%City of Baltimore
Liberty 99% 342
Loch Raven 100%
Prettyboy 98%
Total 99%
WSSC
Triadelphia Reservoir 92% 176
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 number of days available to meet the system's demand.

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

****Cumberland estimates 247 days of storage.

 

Related Topics

For More Information
Please contact the Water Supply Program at WATER.SUPPLY@maryland.gov​ or 410-537-3702

Human Trafficking GET HELP

National Human Trafficking Hotline - 24/7 Confidential

1-888-373-7888 233733 More Information on human trafficking in Maryland

Customer Service Promise

The State of Maryland pledges to provide constituents, businesses, customers, and stakeholders with friendly and courteous, timely and responsive, accurate and consistent, accessible and convenient, and truthful and transparent services.

Take Our Survey

Help Stop Fraud in State Government

The Maryland General Assembly’s Office of Legislative Audits operates a toll-free fraud hotline to receive allegations of fraud and/or abuse of State government resources. Information reported to the hotline in the past has helped to eliminate certain fraudulent activities and protect State resources.

More Information