What is the current flow on St Marys River?
St Marys River is currently flowing at 51.9 cfs at USGS gauge 01661500 as of Aug 18, 8:15 PM UTC.
St Marys River at Great Mills Water Level & Fishing Conditions
Water level (gauge height) · Live from USGS
2.08 ft
Flow 51.9 cfs · as of Aug 18, 8:15 PM UTC
Flow is 51.9 cfs.
Flow
51.9 cfs
Gauge Height
2.08 ft
Water Temp
temporarily unavailable
About This Gauge
USGS 01661500 is a public stream gauge on St Marys River in Maryland. Waderly uses this page as the canonical landing page for flow, water level, and fishing-condition checks on this water. There are 8 nearby gauges linked from this page for watershed context.
3-Day Weather Outlook
NOAA forecast data for St Marys River is not cached on this page yet. The live Waderly map forecast will populate first, and search crawlers can still see flow, gauge height, temperature, nearby gauges, and state-hub links here.
Waderly combines real-time USGS stream gauges with weather, barometric pressure trends, and solunar activity so you know what the water is doing before you go. The "typical" comparison above is an approximation based on the historical daily median flow for this date at this gauge.
Nearby Gauges
- St Marys Lake near Callaway, MD · 1.8 mi
- St George Creek at Piney Point, MD · 7.2 mi
- MCINTOSH RUN NEAR LEONARDTOWN, MD · 9.3 mi
- St Clements Creek near Clements, MD · 13.6 mi
- ST LEONARD CREEK NEAR ST LEONARD, MD · 14.3 mi
- KILLPECK CREEK AT HUNTERSVILLE, MD · 20.5 mi
- FARM CREEK NEAR TODDVILLE, MD · 23.1 mi
- DO Fe 44 · 23.9 mi
Frequently Asked Questions
Is St Marys River above or below normal right now?
Waderly compares St Marys River against its historical median when that gauge has enough flow history loaded. This page does not have that above-or-below-normal comparison yet.
What is the water temperature on St Marys River?
This USGS gauge is not currently reporting water temperature for St Marys River, so this page does not show a live water-temperature reading.
What other gauges should I check near St Marys River?
Nearby gauges worth checking include St Marys Lake near Callaway, MD (1.8 miles away), St George Creek at Piney Point, MD (7.2 miles away), MCINTOSH RUN NEAR LEONARDTOWN, MD (9.3 miles away). Comparing nearby gauges helps confirm whether conditions are changing upstream or across the watershed.
What is the weather outlook for St Marys River?
NOAA forecast data for St Marys River is not cached on this page yet. Waderly's live map forecast usually fills in first.
Intelligence for the water
Get a free alert the moment St Marys River hits your window — the right flow, temperature, and conditions — instead of refreshing this page. Waderly watches the gauge so you don't have to.
Set a free flow alert for St Marys River