What is the current water level of St Marys Lake?

As of Jul 14, 2026, 1:05 PM (UTC-04:00), the pool elevation was 59.10 ft (datum NAVD88), provisional and subject to revision. See the trend chart above for the recent direction.

Is St Marys Lake full right now?

Its managing agency does not publish a %-of-conservation-pool-full figure for this lake, so we show the bare level rather than estimate one.

Where does this data come from?

From USGS site 01661499, retrieved Jul 14, 2026, 10:55 PM (UTC+00:00). See the official link and the methodology page for the full source and update cadence.

Is this safe to use for boating or navigation?

No. Levels here are provisional readings for general reference only — not for navigation, dam-safety, or other safety decisions. Always confirm current conditions with the managing agency before making those calls.

St Marys Lake water level — Maryland

Maryland · USGS · reading Jul 14, 2026, 1:05 PM (UTC-04:00) Provisional

St Marys Lake in Maryland was last measured at 59.10 ft (datum NAVD88), as of Jul 14, 2026, 1:05 PM (UTC-04:00) (USGS Water Services). Over its recent trend window the level has been rising (+0.5 ft). This reading is provisional and subject to revision. Figures are provisional readings for reference — not for navigation or safety decisions.

Current reading St Marys Lake · Maryland

Pool elevation: 59.10 ft
% of conservation pool full: Not reported
Storage: Not reported
Recent trend: ↑Rising

Recent trend

The last ~90 days of readings at this station, downsampled for display.

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).

Important — not for navigation or safety decisions

Water levels here are provisional readings for general reference only. Conditions vary and readings can be revised. Always confirm current conditions with the managing agency before making navigation, boating, or dam-safety decisions.

Source: USGS site 01661499, retrieved Jul 14, 2026, 10:55 PM (UTC+00:00). Official page for this lake →

Nearby lakes

The six nearest published lakes by centroid distance (great-circle) — cross-state neighbors included.

Lakes nearest to St Marys Lake, with current level and distance.
Lake	State	Level	Distance
Hearns Pond	DE	24.27 ft	95 km
Haven Lake Outlet at Milford	DE	13.81 ft	120 km
Unnamed Pond at Dafb at Dover	DE	1.95 ft	133 km
Lake Serene at Edgewood	MD	52.85 ft	133 km
Garrisons Lake	DE	5.62 ft	137 km
Aiww A&c N Landing Bridge	VA	1.05 ft	175 km

Frequently asked questions

What is the current water level of St Marys Lake?: As of Jul 14, 2026, 1:05 PM (UTC-04:00), the pool elevation was 59.10 ft (datum NAVD88), provisional and subject to revision. See the trend chart above for the recent direction.
Is St Marys Lake full right now?: Its managing agency does not publish a %-of-conservation-pool-full figure for this lake, so we show the bare level rather than estimate one.
Where does this data come from?: From USGS site 01661499, retrieved Jul 14, 2026, 10:55 PM (UTC+00:00). See the official link and the methodology page for the full source and update cadence.
Is this safe to use for boating or navigation?: No. Levels here are provisional readings for general reference only — not for navigation, dam-safety, or other safety decisions. Always confirm current conditions with the managing agency before making those calls.

More in Maryland

See every lake tracked in Maryland, or read the methodology behind these figures.