Skip to content
lakeglance

MarylandReservoir, 226 acres

St. Mary's Lake conditions today

Shoreline: USGS National Hydrography Dataset

Right now on St. Mary's

loading

Best window

0pm to 0pm

score

Wind

00kt

Gusts 00

Direction

NE

Blowing from

Air temp

00°F

High

Rain

Dry

next 6 hours

Water level

58.83ft

Steady this week

Sailing

Checking

Reading the forecast

Kayak and SUP

Checking

Reading the forecast

Power boating

Checking

Reading the forecast

Fishing

Checking

Reading the forecast

Hour by hour

Next 24 hours
Wind and gusts0 to 30+ ktScoreGood, caution, stay ashoreNightBest windowArrows point where the wind blows to.

Outlook. Monday: W wind 2 to 4 kt, gusts to 6 kt, high near 68°F. Tuesday: NNE wind 3 to 6 kt, gusts to 11 kt, high near 67°F.

7-day wind forecast

Live radar

Loads when you scroll here

Radar will load here

LightHeavy

Last hour of NOAA MRMS radar, 1 km resolution. Map data © OpenStreetMap contributors, OpenMapTiles, OpenFreeMap.

Water level

Full report

58.83ft NAVD88

-0.09 ft in 7 days
Sep 25Oct 10Oct 25

Reading from Oct 26, 2026.

St. Mary's Lake was at 58.83 ft on October 26, holding steady over the past week (-0.09 ft).

Lake facts

Type
Reservoir
State
Maryland
Surface area
226 acres
USGS gauge
01661499, St Marys Lake near Callaway, MD
Coordinates
38.2528° N, 76.5335° W

About St. Mary's Lake

St. Mary's Lake is a 226-acre reservoir in Maryland.

Water level on this page comes from USGS gauge 01661499 (St Marys Lake near Callaway, MD). Wind, gusts and rain come from the National Weather Service forecast grid that covers the water.

On water this size, waves stay small even on windy days. The catch is gusts: shoreline terrain funnels the wind into sharp puffs that catch out small boats and paddlers. Reservoir levels move with releases and inflow, so ramps and beaches can change week to week. The water level page tracks that day by day.

The go or no-go calls above are a starting point, not a guarantee. Read how we score conditions, and always check local rules and posted warnings before you launch.

St. Mary's Lake questions

Is it windy on St. Mary's Lake today?

The National Weather Service forecast for the lake from October 26: Monday: W wind 2 to 4 kt, gusts to 6 kt, high near 68°F. The panel at the top of this page refreshes the current wind, gusts and direction when you open it and turns them into a call for sailing, paddling, power boating and fishing.

What is the water level at St. Mary's Lake right now?

St. Mary's Lake was at 58.83 ft on October 26, holding steady over the past week (-0.09 ft).

How big is St. Mary's Lake?

St. Mary's Lake covers about 226 acres (0.4 square miles) of surface water.

Nearby lakes

If St. Mary's is blown out, these are the closest alternatives. Tap through for their conditions.