The Casselman River is a freestone river in Maryland and Pennsylvania, listed as Delayed Harvest by Maryland Department of Natural Resources (Maryland Fishing Guide, eRegulations edition).
1 USGS gauge on the water reports flow. 1 guide and 1 shop nearby are listed here.
Casselman River is a freestone river in Maryland and Pennsylvania.
Pick one of its USGS gauges and hear from us when the flow moves into or out of its usual range for the date, or crosses a flow you set. We check the public USGS reading every 2 hours and email only when it crosses, at most once every 6 hours. Flow alone is not a fishing forecast or a safety call.
Signed in: one step. Otherwise we email a confirmation link first. Every alert has one-click links to stop it.
Start from the agency's public access map. Nothing on this page grants or implies access: check the agency map, posted signs and landowner permission before you fish.
Nothing on this page grants or implies access.
Gauges, shops and guides within 40 miles
Map of Casselman River: gauges, shops and guides
Map of Casselman River with 1 USGS gauge.
Restrooms within 2 miles of Casselman River in a straight line, nearest first, with what anglers found when they went. The map says a restroom is there, not whether it is clean or open today.
Map of the restroom near Casselman River
Skip the map; every place is in the list belowMap of 1 restroom near Casselman River, numbered as in the list, with the water’s point marked.
Not rated yet — be the first to tell other anglers if it's clean.
Mapped on OpenStreetMap · see or fix it on the map
Restroom locations and map details: © OpenStreetMap contributors, Open Database License, read Oct 24, 2026. Ratings, answers and photos are members' own; who shared them is never shown, and every photo is reviewed before it appears. Visits older than 18 months no longer count. Distances are straight-line miles, not driving. Nothing here grants access to private land. Community guidelines.
Trophy / quality trout waterThe Savage River from the Allegany Bridge, Savage River State Forest. Photo: Aneta Kaluzna, CC BY-SA 3.0, via Wikimedia Commons
Delayed HarvestRepresentative photo · not Laurel Hill CreekTyrone, Pennsylvania, from the air: Bald Eagle Creek meets the Little Juniata River in the town (the creek is not visible at this distance). Photo: Quintin Soloviev, CC BY 4.0, via Wikimedia Commons Not Laurel Hill Creek.
Pennsylvania · about 13 mi
Catch and releaseRepresentative photo · not Youghiogheny RiverBig Gunpowder Falls from the Torrey C. Brown rail trail, Maryland. Photo: Henrysz, CC BY-SA 4.0, via Wikimedia Commons Not Youghiogheny River.
Maryland · about 15 mi
Catch and releaseRepresentative photo · not North Branch Potomac RiverThe Elk River at the Clendenin access, West Virginia (downstream of the trout water near Webster Springs). Photo: Jcyoung1981 2, CC BY-SA 4.0, via Wikimedia Commons Not North Branch Potomac River.
West Virginia · about 18 mi
Catch and releaseRepresentative photo · not North Branch Potomac RiverThe Little Juniata River at the 1898 Birmingham Bridge, near Birmingham, Pennsylvania (black-and-white survey photograph). Photo: Jet Lowe, public domain, via Wikimedia Commons Not North Branch Potomac River.
Maryland · about 21 mi
Trophy / quality trout waterRepresentative photo · not Youghiogheny RiverSpring Creek in Talleyrand Park, Bellefonte, Pennsylvania. Photo: Nicholas A. Tonelli, CC BY 2.0, via Wikimedia Commons Not Youghiogheny River.
Pennsylvania · about 22 mi
Seasons, limits, special regulations and closures for each reach are on the agency pages below. Read them before you go.
Each comes from the agency's own published list; where the list names a reach it is quoted. A designation applies to the listed reach, not necessarily the whole water. Listed in the finder under trout.
On the Delayed Harvest Trout Fishing Areas (Group I and II) list (Maryland Department of Natural Resources (Maryland Fishing Guide, eRegulations edition), read 2026-10-20). All waters with this designation
Measured from the NHDPlus High Resolution (flowlines and waterbodies) (U.S. Geological Survey, read 2026-11-04) for this water’s own mapped feature. Rounded figures; they describe the channel, not today’s conditions.
Areas the Protected Areas Database of the United States (PAD-US), public access (U.S. Geological Survey, Gap Analysis Project, read 2026-11-05) lists as owned or held in easement and open to the public, crossed by the mapped channel. Boundaries are mapped, not surveyed. Nothing on this page grants or implies access: check the agency map, posted signs and landowner permission before you fish.
1 of 55.1 mi on public land
Nothing on this page grants or implies access.
Listings marked Unclaimed are built from open map records and the business's own website: confirm licensing, rates, dates and hours directly.
None of our destination hubs is within 40 miles in a straight line. The trip planner builds a trip around the water itself: the guides and shops listed within 40 miles of it, its gauges and its nearest towns and airports.
No hub within 40 miles
A practical checklist for fly fishing small mountain trout streams: a short 3–4 weight rod, light line, a few buoyant dries and simple wet-wading gear, with estimated prices and where to buy.
7′6″–8′6″ rod, 3–4 weight, floating line · Brook, cutthroat, rainbow and brown trout
Open the checklistSeams, shelves and soft water, shown on real rivers.
Public YouTube videos from established channels, chosen by us to support this page. Not sponsored; the creators are not affiliated with Legendary Fly Gear.
Not sponsored All videos on reading water
Indicator rigs, depth and detecting the take.
Public YouTube videos from established channels, chosen by us to support this page. Not sponsored; the creators are not affiliated with Legendary Fly Gear.
Not sponsored All videos on nymphing
Trip stories anglers chose to share publicly and tagged with Casselman River.
No stories from here yet.
Not a statement of access, fish presence or conditions.
A water page organises discovery. It does not assert public access, legal access, current fish presence, guide availability or fishing conditions.
Flows, gauge statistics and flood stages come from USGS and the National Weather Service when the page is shown. Regulations, stocking, species and season statements link to the agency that publishes them; this page copies only the species names and the quoted sentences. Guide and shop listings come from the Legendary directories. Position: the USGS gauge CASSELMAN RIVER AT GRANTSVILLE, MD. Water type is our own classification.
Caution: Rising water: fishable, but watch the level
No water temperature here.
At CASSELMAN RIVER AT GRANTSVILLE, MD (USGS 03078000) Provisional USGS data
USGS 03078000 · NWS GNTM2
What the agencies suggest
Stand back from the shoreline and be aware of surroundingsRhode Island Department of Environmental Management
General guidance from the readings and the published lines named above, not a fishing forecast. Local rules and closures come first.
Reading Nov 5, 6:30 PM EST · provisional USGS data
Normal for Nov 5 Rising · 24 h Below NWS action stage
Discharge, last 7 days: 169 readings from Oct 29, 7:30 PM EDT to Nov 5, 6:30 PM EST; ranging 34.2 to 45.3 ft³/s; latest 45.3 ft³/s.
USGS provisional data may be revised. Source: USGS instantaneous values.
| Time | Discharge (ft³/s) | Gauge height (ft) |
|---|---|---|
| Nov 5, 6:30 PM EST | 45.3 | 1.13 |
| Nov 5, 5:30 PM EST | 44.1 | 1.12 |
| Nov 5, 4:30 PM EST | 42.9 | 1.11 |
| Nov 5, 3:30 PM EST | 42.9 | 1.11 |
| Nov 5, 2:30 PM EST | 41.8 | 1.1 |
| Nov 5, 1:30 PM EST | 40.6 | 1.09 |
| Nov 5, 12:30 PM EST | 39.5 | 1.08 |
| Nov 5, 11:30 AM EST | 39.5 | 1.08 |
| Nov 5, 10:30 AM EST | 39.5 | 1.08 |
| Nov 5, 9:30 AM EST | 39.5 | 1.08 |
| Nov 5, 8:30 AM EST | 38.4 | 1.07 |
| Nov 5, 7:30 AM EST | 37.3 | 1.06 |
| Nov 5, 6:30 AM EST | 37.3 | 1.06 |
| Nov 5, 5:30 AM EST | 37.3 | 1.06 |
| Nov 5, 4:30 AM EST | 36.2 | 1.05 |
| Nov 5, 3:30 AM EST | 35.2 | 1.04 |
| Nov 5, 2:30 AM EST | 35.2 | 1.04 |
| Nov 5, 1:30 AM EST | 35.2 | 1.04 |
| Nov 5, 12:30 AM EST | 35.2 | 1.04 |
| Nov 4, 11:30 PM EST | 35.2 | 1.04 |
| Nov 4, 10:30 PM EST | 35.2 | 1.04 |
| Nov 4, 9:30 PM EST | 35.2 | 1.04 |
| Nov 4, 8:30 PM EST | 35.2 | 1.04 |
| Nov 4, 7:30 PM EST | 35.2 | 1.04 |
| Nov 4, 6:30 PM EST | 35.2 | 1.04 |
| Nov 4, 5:30 PM EST | 35.2 | 1.04 |
| Nov 4, 4:30 PM EST | 35.2 | 1.04 |
| Nov 4, 3:30 PM EST | 35.2 | 1.04 |
| Nov 4, 2:30 PM EST | 35.2 | 1.04 |
| Nov 4, 1:30 PM EST | 34.2 | 1.03 |
| Nov 4, 12:30 PM EST | 34.2 | 1.03 |
| Nov 4, 11:30 AM EST | 35.2 | 1.04 |
| Nov 4, 10:30 AM EST | 34.2 | 1.03 |
| Nov 4, 9:30 AM EST | 35.2 | 1.04 |
| Nov 4, 8:30 AM EST | 35.2 | 1.04 |
| Nov 4, 7:30 AM EST | 35.2 | 1.04 |
| Nov 4, 6:30 AM EST | 35.2 | 1.04 |
| Nov 4, 5:30 AM EST | 35.2 | 1.04 |
| Nov 4, 4:30 AM EST | 35.2 | 1.04 |
| Nov 4, 3:30 AM EST | 35.2 | 1.04 |
| Nov 4, 2:30 AM EST | 35.2 | 1.04 |
| Nov 4, 1:30 AM EST | 35.2 | 1.04 |
| Nov 4, 12:30 AM EST | 36.2 | 1.05 |
| Nov 3, 11:30 PM EST | 36.2 | 1.05 |
| Nov 3, 10:30 PM EST | 36.2 | 1.05 |
| Nov 3, 9:30 PM EST | 36.2 | 1.05 |
| Nov 3, 8:30 PM EST | 36.2 | 1.05 |
| Nov 3, 7:30 PM EST | 36.2 | 1.05 |
| Nov 3, 6:30 PM EST | 36.2 | 1.05 |
| Nov 3, 5:30 PM EST | 35.2 | 1.04 |
| Nov 3, 4:30 PM EST | 35.2 | 1.04 |
| Nov 3, 3:30 PM EST | 35.2 | 1.04 |
| Nov 3, 2:30 PM EST | 35.2 | 1.04 |
| Nov 3, 1:30 PM EST | 36.2 | 1.05 |
| Nov 3, 12:30 PM EST | 35.2 | 1.04 |
| Nov 3, 11:30 AM EST | 35.2 | 1.04 |
| Nov 3, 10:30 AM EST | 35.2 | 1.04 |
| Nov 3, 9:30 AM EST | 35.2 | 1.04 |
| Nov 3, 8:30 AM EST | 35.2 | 1.04 |
| Nov 3, 7:30 AM EST | 35.2 | 1.04 |
| Nov 3, 6:30 AM EST | 35.2 | 1.04 |
| Nov 3, 5:30 AM EST | 35.2 | 1.04 |
| Nov 3, 4:30 AM EST | 35.2 | 1.04 |
| Nov 3, 3:30 AM EST | 36.2 | 1.05 |
| Nov 3, 2:30 AM EST | 36.2 | 1.05 |
| Nov 3, 1:30 AM EST | 36.2 | 1.05 |
| Nov 3, 12:30 AM EST | 36.2 | 1.05 |
| Nov 2, 11:30 PM EST | 36.2 | 1.05 |
| Nov 2, 10:30 PM EST | 37.3 | 1.06 |
| Nov 2, 9:30 PM EST | 37.3 | 1.06 |
| Nov 2, 8:30 PM EST | 37.3 | 1.06 |
| Nov 2, 7:30 PM EST | 37.3 | 1.06 |
| Nov 2, 6:30 PM EST | 37.3 | 1.06 |
| Nov 2, 5:30 PM EST | 36.2 | 1.05 |
| Nov 2, 4:30 PM EST | 36.2 | 1.05 |
| Nov 2, 3:30 PM EST | 36.2 | 1.05 |
| Nov 2, 2:30 PM EST | 36.2 | 1.05 |
| Nov 2, 1:30 PM EST | 36.2 | 1.05 |
| Nov 2, 12:30 PM EST | 36.2 | 1.05 |
| Nov 2, 11:30 AM EST | 36.2 | 1.05 |
| Nov 2, 10:30 AM EST | 36.2 | 1.05 |
| Nov 2, 9:30 AM EST | 36.2 | 1.05 |
| Nov 2, 8:30 AM EST | 36.2 | 1.05 |
| Nov 2, 7:30 AM EST | 36.2 | 1.05 |
| Nov 2, 6:30 AM EST | 36.2 | 1.05 |
| Nov 2, 5:30 AM EST | 36.2 | 1.05 |
| Nov 2, 4:30 AM EST | 36.2 | 1.05 |
| Nov 2, 3:30 AM EST | 36.2 | 1.05 |
| Nov 2, 2:30 AM EST | 36.2 | 1.05 |
| Nov 2, 1:30 AM EST | 37.3 | 1.06 |
| Nov 2, 12:30 AM EST | 37.3 | 1.06 |
| Nov 1, 11:30 PM EST | 37.3 | 1.06 |
| Nov 1, 10:30 PM EST | 37.3 | 1.06 |
| Nov 1, 9:30 PM EST | 37.3 | 1.06 |
| Nov 1, 8:30 PM EST | 37.3 | 1.06 |
| Nov 1, 7:30 PM EST | 37.3 | 1.06 |
| Nov 1, 6:30 PM EST | 37.3 | 1.06 |
| Nov 1, 5:30 PM EST | 37.3 | 1.06 |
| Nov 1, 4:30 PM EST | 37.3 | 1.06 |
| Nov 1, 3:30 PM EST | 37.3 | 1.06 |
| Nov 1, 2:30 PM EST | 37.3 | 1.06 |
| Nov 1, 1:30 PM EST | 37.3 | 1.06 |
| Nov 1, 12:30 PM EST | 37.3 | 1.06 |
| Nov 1, 11:30 AM EST | 37.3 | 1.06 |
| Nov 1, 10:30 AM EST | 37.3 | 1.06 |
| Nov 1, 9:30 AM EST | 37.3 | 1.06 |
| Nov 1, 8:30 AM EST | 37.3 | 1.06 |
| Nov 1, 7:30 AM EST | 37.3 | 1.06 |
| Nov 1, 6:30 AM EST | 37.3 | 1.06 |
| Nov 1, 5:30 AM EST | 37.3 | 1.06 |
| Nov 1, 4:30 AM EST | 37.3 | 1.06 |
| Nov 1, 3:30 AM EST | 37.3 | 1.06 |
| Nov 1, 2:30 AM EST | 37.3 | 1.06 |
| Nov 1, 1:30 AM EST | 38.4 | 1.07 |
| Nov 1, 1:30 AM EDT | 38.4 | 1.07 |
| Nov 1, 12:30 AM EDT | 38.4 | 1.07 |
| Oct 31, 11:30 PM EDT | 38.4 | 1.07 |
| Oct 31, 10:30 PM EDT | 38.4 | 1.07 |
| Oct 31, 9:30 PM EDT | 38.4 | 1.07 |
| Oct 31, 8:30 PM EDT | 38.4 | 1.07 |
| Oct 31, 7:30 PM EDT | 38.4 | 1.07 |
| Oct 31, 6:30 PM EDT | 38.4 | 1.07 |
| Oct 31, 5:30 PM EDT | 38.4 | 1.07 |
| Oct 31, 4:30 PM EDT | 38.4 | 1.07 |
| Oct 31, 3:30 PM EDT | 38.4 | 1.07 |
| Oct 31, 2:30 PM EDT | 38.4 | 1.07 |
| Oct 31, 1:30 PM EDT | 38.4 | 1.07 |
| Oct 31, 12:30 PM EDT | 38.4 | 1.07 |
| Oct 31, 11:30 AM EDT | 38.4 | 1.07 |
| Oct 31, 10:30 AM EDT | 38.4 | 1.07 |
| Oct 31, 9:30 AM EDT | 38.4 | 1.07 |
| Oct 31, 8:30 AM EDT | 38.4 | 1.07 |
| Oct 31, 7:30 AM EDT | 38.4 | 1.07 |
| Oct 31, 6:30 AM EDT | 38.4 | 1.07 |
| Oct 31, 5:30 AM EDT | 38.4 | 1.07 |
| Oct 31, 4:30 AM EDT | 39.5 | 1.08 |
| Oct 31, 3:30 AM EDT | 39.5 | 1.08 |
| Oct 31, 2:30 AM EDT | 39.5 | 1.08 |
| Oct 31, 1:30 AM EDT | 39.5 | 1.08 |
| Oct 31, 12:30 AM EDT | 39.5 | 1.08 |
| Oct 30, 11:30 PM EDT | 39.5 | 1.08 |
| Oct 30, 10:30 PM EDT | 39.5 | 1.08 |
| Oct 30, 9:30 PM EDT | 40.6 | 1.09 |
| Oct 30, 8:30 PM EDT | 40.6 | 1.09 |
| Oct 30, 7:30 PM EDT | 40.6 | 1.09 |
| Oct 30, 6:30 PM EDT | 40.6 | 1.09 |
| Oct 30, 5:30 PM EDT | 40.6 | 1.09 |
| Oct 30, 4:30 PM EDT | 40.6 | 1.09 |
| Oct 30, 3:30 PM EDT | 40.6 | 1.09 |
| Oct 30, 2:30 PM EDT | 40.6 | 1.09 |
| Oct 30, 1:30 PM EDT | 40.6 | 1.09 |
| Oct 30, 12:30 PM EDT | 40.6 | 1.09 |
| Oct 30, 11:30 AM EDT | 40.6 | 1.09 |
| Oct 30, 10:30 AM EDT | 40.6 | 1.09 |
| Oct 30, 9:30 AM EDT | 40.6 | 1.09 |
| Oct 30, 8:30 AM EDT | 41.8 | 1.1 |
| Oct 30, 7:30 AM EDT | 41.8 | 1.1 |
| Oct 30, 6:30 AM EDT | 41.8 | 1.1 |
| Oct 30, 5:30 AM EDT | 41.8 | 1.1 |
| Oct 30, 4:30 AM EDT | 41.8 | 1.1 |
| Oct 30, 3:30 AM EDT | 41.8 | 1.1 |
| Oct 30, 2:30 AM EDT | 41.8 | 1.1 |
| Oct 30, 1:30 AM EDT | 41.8 | 1.1 |
| Oct 30, 12:30 AM EDT | 41.8 | 1.1 |
| Oct 29, 11:30 PM EDT | 41.8 | 1.1 |
| Oct 29, 10:30 PM EDT | 41.8 | 1.1 |
| Oct 29, 9:30 PM EDT | 42.9 | 1.11 |
| Oct 29, 8:30 PM EDT | 42.9 | 1.11 |
| Oct 29, 7:30 PM EDT | 42.9 | 1.11 |
Normal for Nov 5: 14–91 ft³/s (middle half of 79 years of record). Now: 45.3 ft³/s, normal.
Normal for this date. 45.3 ft³/s is between the 25th and 75th percentiles of daily mean flow for Nov 5 at this gauge over 79 years of record (1948–2026): 10th 7.3, 25th 14, median 38, 75th 91, 90th 190 ft³/s.
Daily means on record for Nov 5: lowest 1.8 ft³/s, highest 2,320 ft³/s.
Classes as USGS labels them (hyswap: flow categories (WDFN_stats schema) (U.S. Geological Survey) ); percentiles from the USGS daily statistics (U.S. Geological Survey) (approved daily means; the reading is provisional and instantaneous).
Rising over 24 hours: discharge up 28.7%, from 35.2 to 45.3 ft³/s. Rising or falling means a change of more than 10% in discharge (or 0.2 ft of gauge height) over 24 hours; our rule of thumb, not a USGS class.
Below NWS action stage. The National Weather Service reports this gauge below its action stage. That is not a statement that wading is safe.
NWS observed 1.12 ft stage, 42 ft³/s at Nov 5, 5:30 PM EST (NWS gauge GNTM2; its stage datum can differ from the USGS gauge height).
Forecasts are not available. Only observed stages are available for this point.
Open the NWS gauge page · What the categories mean (National Weather Service)
No current water-temperature reading at this gauge, so no temperature guidance is given. Take a stream thermometer: the trout lines Maryland DNR uses are 65°F and 68°F.
This gauge is on our page for Casselman River, but no agency page we read lists its species.
Below NWS action stage. The National Weather Service reports this gauge below its action stage. That is not a statement that wading is safe.
Flood categories: action stage, minor, moderate and major flooding (National Weather Service)Rising water. Rising over the last 24 hours (discharge up 28.7%). Keep your way back to the bank in sight and watch the level while you fish. “Rising” is our rule of thumb: more than 10% in discharge or 0.2 ft of gauge height in 24 hours, not a USGS or NWS class.
Turn Around Don't Drown. “A mere 6 inches of fast-moving flood water can knock over an adult.” No flow number makes a crossing safe; if in doubt, stay out.
Turn Around Don't Drown (National Weather Service)Guidance from the readings above and the published thresholds named with each line; not a fishing forecast, a safety guarantee or a statement about access. Local rules and closures come first.
Checked Nov 5, 6:59 PM EST; readings refresh at most every 15 minutes and statistics daily. Provisional USGS data can be revised. Conditions change: re-check before you go. This is general guidance, not a fishing forecast, a safety guarantee or a statement about access.
Running well nowThe Savage River from the Allegany Bridge, Savage River State Forest. Photo: Aneta Kaluzna, CC BY-SA 3.0, via Wikimedia Commons
Delayed HarvestRepresentative photo · not Laurel Hill CreekTyrone, Pennsylvania, from the air: Bald Eagle Creek meets the Little Juniata River in the town (the creek is not visible at this distance). Photo: Quintin Soloviev, CC BY 4.0, via Wikimedia Commons Not Laurel Hill Creek.
Catch and releaseRepresentative photo · not Youghiogheny RiverBig Gunpowder Falls from the Torrey C. Brown rail trail, Maryland. Photo: Henrysz, CC BY-SA 4.0, via Wikimedia Commons Not Youghiogheny River.
Running well nowRepresentative photo · not North Branch Potomac RiverThe Elk River at the Clendenin access, West Virginia (downstream of the trout water near Webster Springs). Photo: Jcyoung1981 2, CC BY-SA 4.0, via Wikimedia Commons Not North Branch Potomac River.
Catch and releaseRepresentative photo · not North Branch Potomac RiverThe Little Juniata River at the 1898 Birmingham Bridge, near Birmingham, Pennsylvania (black-and-white survey photograph). Photo: Jet Lowe, public domain, via Wikimedia Commons Not North Branch Potomac River.
Trophy / quality trout waterRepresentative photo · not Youghiogheny RiverSpring Creek in Talleyrand Park, Bellefonte, Pennsylvania. Photo: Nicholas A. Tonelli, CC BY 2.0, via Wikimedia Commons Not Youghiogheny River.
