ST MARYS RIVER AT GREAT MILLS, MD
USGSMaryland (38.24175, -76.50367) · View on map
Current reading
10.5 CFS
Gauge height: 1.55 FT
Read about 1 hour ago · Oct 21, 2026 12:15 PM EDT
Flow history — last 6 days
No readings recorded in the last 6 days.
Runs on this gauge
No runs currently read this gauge.