Northeast
Casselman River
Live Conditions
Casselman River — At Grantsville
7-Day Flow
↓ Falling
24-Hr Pressure
27.7 inHg · → High/stable
Local Weather
Tough conditions — fish deep
Today
🌧️Rain
77° / 67°
0.06"
Tomorrow
🌦️Drizzle
73° / 59°
0.02"
Sat
☁️Overcast
72° / 54°
Sun
🌧️Rain showers
75° / 63°
0.88"
Cold front incoming — go deep with nymphs, surface activity likely slow.
Weather by Open-Meteo · No API key · Updated every 30 min
What should I fish today?
⚡ AIAI-powered recommendation using today's live flow, temperature, and hatch data.
9
Time of Day
Using: 60 CFS · BWOs
What should I pack?
Rod, flies, tippet, and safety gear specific to today's Casselman River conditions.
🪰 Hatch Calendar
Casselman River · September · Early Fall
Showing typical dates — water temperature data unavailable for live hatch predictions.
Select month
BWOs (size 18-20) returning. Brookie pre-spawn — RESPECT REDDS, native population.
River Map
About Casselman River
The Casselman River near Grantsville in Garrett County is one of Maryland's premier native brook trout streams, flowing through a pastoral Allegheny valley with classic freestone character. The upper reaches hold wild, stream-born brook trout in clear, cold freestone runs, while the lower sections near Grantsville receive supplemental stocking and hold brown trout. The Casselman rewards anglers willing to slow down and work small pockets carefully.
Regulations
Standard Maryland statewide trout regulations apply. Trout season opens the last Saturday in March. Upper wild trout reaches may have special wild trout stream protections under Maryland DNR management — consult the current Freshwater Fishing Guide.
Learn More
Guides to help you fish Casselman River with more confidence.
Maryland Fishing Regulations for Fly Anglers
Maryland nontidal fishing license, the separate Trout Stamp required statewide, the last Saturday in March opener, the Gunpowder Falls 7.2-mile…
Trout Species of Maryland
MD's wild brown trout fishery — the famously selective Gunpowder Falls below Prettyboy, the Trophy Trout Savage tailwater, the North Branch Potomac…
How Barometric Pressure Affects Fishing (And How to Use It)
That gorgeous bluebird day after a cold front? Worst fishing of the year. Here's the data behind why pressure changes matter more than the weather…