Potomac River +3 more
The rule for this water, with the receipt.
Special regulations for Potomac River, Monocacy River and Conococheague Creek within Allegany, Carroll, Frederick and Washington counties, as the state words them
St. Mary's County · River · MD
The rules for this water, verbatimOfficial text
Straight from MD's official regulations. Rules in force today lead; out-of-season rows are dimmed. Nothing is paraphrased. Not legal advice: verify the posted rules at the water.
- carp, catfish, Northern snakehead, or suckersGear Dip NetsMay only be used in areas of the Potomac River, Monocacy River and Conococheague Creek that lie within Allegany, Carroll, Frederick and Washington counties; may only be used to catch carp, catfish, Northern snakehead, or suckers; may not be used in any other area or to catch any other species
Statewide base layerParsed
These defaults apply where the rules above do not modify them.
- Season
- Not captured yet - consult the statewide regulations
- Gear
- These are the only types of gear you may use in nontidal watersStatewide
- Bait
- Not captured yet - consult the statewide regulations
- Poles
- May use up to 3 active lines at a timeStatewide
Where the verbatim rules above name a species, season, or limit, they replace the rows below. Each row is tagged with the layer it comes from.
| Species | Daily limit | Size | |
|---|---|---|---|
brook trout | 0 Daily/0 Possession | - | Statewide |
all other species of trout | combined 5 Daily/10 Possession | - | Statewide |
How this answer was assembled
- StatewideStatewide river rules are the base layer: default season, gear, bait, and limits.
- This waterSpecial rules written for this exact water replace the statewide defaults where they speak.
- Emergency orderEmergency orders in effect today override everything else. They sync quietly when the phone has coverage and never lock you out of the app.
Where this stretch begins and ends
The drawn shape is the named water, matched from the official list against OpenStreetMap and accepted only because the name resolved to a single feature in this water's county.
Different sections of this water can have different rules. The exact section boundaries are not marked on the map yet; each rule above describes in plain words where it starts and ends, and that written description is the authoritative boundary. Map boundaries come water by water, never as a guess.
At the water nowContext
Streamflow: 93.5 cfs at western branch at upper marlboro, md (2026-07-29 05:15)
Forecast: National Weather Service. Flow: nearest active USGS gauge in this water's area, which may sit on a different reach. Conditions are context, not rules.
What are you fishing for here?Advice
Pick from the species named in Potomac River +3 more's rules. Setups are checked against the gear rules in force today, and your picks are remembered on this device only. These are rule-aware suggestions, not a claim about what is biting; advice, not law, and the rules above govern.
Receipts
Local services near Potomac River +3 more
Tackle shops, guides, and boat launches that serve this water will appear here - a separate lane below the rules, so a local business can reach you without ever getting between you and the regulation.
Run a shop or guide service on Potomac River +3 more? Get listed.