How many lakes and reservoirs in Maryland are tracked here?

5, of which 5 report a current pool-elevation reading. The rest report storage only, or lack a fresh reading and are not published.

Which Maryland lakes report a %-full figure?

None of Maryland's lakes in this dataset currently have a source-provided %-full figure — we show the bare level rather than estimate one.

Where does the data come from?

USGS Water Services and USACE CWMS Data, both public domain. See the methodology page for the exact endpoints and update cadence.

Maryland lake & reservoir water levels

5 lakes tracked · 5 with a current elevation reading · USGS Water Services + USACE CWMS Data

Maryland has 5 lakes and reservoirs tracked here — 5 with a current elevation reading, from USGS Water Services and USACE CWMS Data. Sort the table by level, storage, %-full, or trend, then open any lake for its full elevation-with-datum, trend sparkline, storage, and source-and-vintage stamp. Figures are provisional readings for reference — not for navigation or safety decisions.

Statewide totals Maryland · USGS + USACE

Lakes tracked: 5
With elevation reading: 5
With %-full figure: 0

All Maryland lakes

Every lake tracked in Maryland. Click a column heading to sort, or filter by name. Elevation lakes are listed before storage-only lakes; a missing figure always shows "not reported," never an estimate.

Filter lakes

Maryland lakes, elevation lakes first, by name.
		Datum			Trend
Deep Creek Lake	2,462.37	NAVD88	—	—	↓Falling
Jennings Randolph Lake	1,461.11	NAVD88	90,900	—	↓Falling
Lake Serene at Edgewood	52.85	NAVD88	—	—	→Steady
Savage River Reservoir	1,457.05	NAVD88	15,330	—	↓Falling
St Marys Lake	59.10	NAVD88	—	—	↑Rising

Data: USGS Water Services (waterservices.usgs.gov) and USACE CWMS Data (cwms-data.usace.army.mil), retrieved 2026-07-14. Both public domain (a work of the U.S. Government, 17 U.S.C. §105).

Frequently asked questions

How many lakes and reservoirs in Maryland are tracked here?: 5, of which 5 report a current pool-elevation reading. The rest report storage only, or lack a fresh reading and are not published.
Which Maryland lakes report a %-full figure?: None of Maryland's lakes in this dataset currently have a source-provided %-full figure — we show the bare level rather than estimate one.
Where does the data come from?: USGS Water Services and USACE CWMS Data, both public domain. See the methodology page for the exact endpoints and update cadence.

Explore

Read the methodology behind these figures, or search all lakes nationally from the home page.