2459.45 ft Historical Spillway Datum 2462
level 2.6 ft below full pool — this gauge's public record is too short for seasonal comparisons
Reading comes straight from U.S. Geological Survey National Water Information System (USGS gauge 03075871) and updates live when you load this page.
Is Deep Creek Lake full?
Not quite — 2.6 ft below full pool as of September 24, 2026
How full is Deep Creek Lake? Not as a percentage: no storage figure comes through with this gauge reading, and a share of capacity worked out from the elevation alone would be a guess — how much water a reservoir holds at a given level is a curve only the operator's own capacity table knows. Feet from full pool is what the operator publishes, and it is the figure above.
Deep Creek Lake water temperature
73° as of August 25, 2026
Read from the USGS gauge in the lake near Thayerville. It sits in open water rather than in the powerhouse draw below it, and its year runs from the upper thirties in February to about 78° in July — the swing of surface water, not of a deep intake. One sensor is one spot on the lake. A shallow cove on a still afternoon runs warmer than this, and the water a few feet down runs colder.
Water temperature is not water safety. A warm surface says nothing about what is under it — colder water a few feet down, currents near the dam or the spillway, or a bacteria advisory — so check with the lake office before you get in.
Full pool, datum, and the gauge
"Full pool" here means the conservation pool — the level the lake is designed to hold for water supply and recreation, not the flood-control space above it. The full explainer covers flood pool and dead pool too.
| Full pool | 2462.00 ft Historical Spillway Datum 2462 · per Brookfield Renewable hydro under MDE permit; USGS gauge full-pool reference |
|---|---|
| Gauge | USGS gauge 03075871 · U.S. Geological Survey National Water Information System |
| Datum | Historical Spillway Datum 2462 — Readings are on the historical spillway datum Maryland's rule band uses — an upper band near 2461-2462 ft, held above 2458 ft from May to mid-October; the same gauge's NAVD88 figures read 1.82 ft higher. |
| Last verified | August 15, 2026 |
LakeDates reports lake level, not ramp status. Whether a given ramp or marina is usable at this level varies ramp by ramp — call the marina before you tow.
Quick answers
What is the lake level for Deep Creek Lake today?
Deep Creek Lake is at 2459.45 ft (Historical Spillway Datum 2462) as of September 24, 2026 — 2.6 ft below full pool — this gauge's public record is too short for seasonal comparisons.
Is Deep Creek Lake full?
Not quite — at 2459.45 ft on September 24, 2026, Deep Creek Lake is 2.6 ft below its full pool of 2462.00 ft (Historical Spillway Datum 2462).
How full is Deep Creek Lake?
Not as a percentage: no storage figure comes through with this gauge reading, and a share of capacity worked out from the elevation alone would be a guess — how much water a reservoir holds at a given level is a curve only the operator's own capacity table knows. Feet from full pool is what the operator publishes, and it is the figure above.
What is full pool for Deep Creek Lake?
Full pool (the conservation pool) for Deep Creek Lake is 2462.00 ft Historical Spillway Datum 2462, per Brookfield Renewable hydro under MDE permit; USGS gauge full-pool reference. Levels above it use flood storage; levels below it are drawdown.
What is the water temperature at Deep Creek Lake?
Deep Creek Lake was 73° on August 25, 2026. Read from the USGS gauge in the lake near Thayerville. It sits in open water rather than in the powerhouse draw below it, and its year runs from the upper thirties in February to about 78° in July — the swing of surface water, not of a deep intake. One sensor is one spot on the lake. A shallow cove on a still afternoon runs warmer than this, and the water a few feet down runs colder.