Catfish Fishing Regulations in Maryland: What Every Angler Needs to Know
July 7, 2026
Maryland offers some of the most varied catfish fishing on the East Coast, from trophy-class blue cats pushing triple digits on the tidal Potomac River to scrappy channel cats in inland reservoirs. Whether you are a weekend angler or a seasoned catfisher, understanding the state’s rules before you hit the water is essential — regulations differ by species, water type, and even by county in some cases.
This guide covers everything you need to fish for catfish legally in Maryland in 2026: species identification, season dates, bag and size limits, legal gear, license requirements, and the top waters worth targeting. Always confirm the latest rules with the Maryland Department of Natural Resources before each trip, as regulations can change.
Pro Tip: Maryland designates Free Fishing Days when no license is required. In 2026, anyone may fish without a recreational fishing license on June 6, June 13, and July 4. All standard fishing regulations still apply on Free Fishing Days — seasons, size limits, bag limits, and gear restrictions remain in full force.
Catfish Species Found in Maryland
Maryland is home to a variety of catfish, including the native white catfish of the Chesapeake Bay and three non-native species — blue, channel, and flathead — offering a range of opportunities for novice and avid anglers alike. Knowing which species you are targeting helps you apply the correct regulations and handle each fish appropriately.
The white catfish (Ameiurus catus) is the only catfish species native to the Chesapeake Bay watershed. It is the smallest of the large North American catfish species, lacks scales, and possesses an adipose fin as well as a single, often serrated spine in the dorsal and pectoral fins. White catfish are bluish-gray on the back and sides and white underneath, with a moderately forked tail, a noticeably broad head, a large mouth, and a stout body.
The blue catfish (Ictalurus furcatus) is the largest catfish species in North America and an introduced predator in Maryland waters. Blue catfish can easily exceed 100 pounds and are generally slate blue on the back, fading to silvery white on the underside, with a deeply forked tail. They live mainly in fresh water and are found in the tidal Potomac River, preferring large rivers with deep channels, a swift current, and a sandy bottom.
The channel catfish (Ictalurus punctatus) is widely distributed across Maryland’s freshwater lakes, rivers, and reservoirs. Lake, pond, and stream pool habitats are likely to host brown bullhead or yellow bullhead, while bigger waters closer to the Anacostia and Potomac Rivers may host channel catfish. Channel cats are recognizable by their deeply forked tail and scattered dark spots on a silvery-olive body.
The flathead catfish (Pylodictis olivaris) rounds out Maryland’s catfish lineup as another invasive species. Flathead catfish are the second largest catfish species in North America and can reach over 60 inches in length and over 120 pounds in weight. Flathead are an introduced species and are currently found in only a few places in the Chesapeake Bay watershed — the Potomac River, Upper Bay, Elk River, and Sassafras River.
Important Note: Catch and release of blue catfish, flathead catfish, and northern snakehead is discouraged, as they are harmful to native species. Maryland DNR asks anglers to remove and keep these fish when caught.
Catfish Season Dates in Maryland
Maryland’s catfish season structure is one of the most angler-friendly in the Mid-Atlantic region. For the two invasive species — blue catfish and flathead catfish — there is no closed season whatsoever. There are no size limits, catch limits, or closed seasons for blue catfish. The same open-season policy applies to flathead catfish as part of the state’s invasive species management strategy.
For channel catfish and the native white catfish in non-tidal freshwater, Maryland does not impose a closed season either, meaning you can legally target them year-round. There is no closed season or minimum size for brown bullhead and yellow bullhead in Montgomery County, while channel catfish have a daily limit of 5 and a possession limit of 10. Rules can vary slightly by specific water body, so checking the regulations for your exact location is always worth the effort.
If you plan to fish for catfish in tidal waters such as the Chesapeake Bay tributaries or the tidal Potomac River, the same year-round open season applies to catfish species. Maryland offers varied freshwater fishing across rivers, reservoirs, and local waters, with consistent opportunity for blue catfish, among other species, and success usually comes from matching your plan to each water body instead of relying on one statewide pattern.
Daily Bag Limits for Catfish in Maryland
Bag limits in Maryland vary by catfish species, and the distinction between invasive and non-invasive fish creates a two-tier system anglers need to understand. The table below summarizes the key limits as of the 2026 fishing season.
| Species | Daily Bag Limit | Possession Limit | Status |
|---|---|---|---|
| Blue Catfish | No limit | No limit | Invasive — removal encouraged |
| Flathead Catfish | No limit | No limit | Invasive — removal encouraged |
| Channel Catfish | 5 (some waters) | 10 (some waters) | Non-native, regulated |
| White Catfish | 10 (general) | Varies | Native species |
| Brown/Yellow Bullhead | No closed season (varies by county) | Varies | Native species |
Maryland has no fishing limits on invasive fish, which means anglers can catch and keep any number of them, at any size, during any time of year. This policy is intentional — the state actively wants anglers to reduce blue catfish and flathead catfish populations to protect native Chesapeake Bay species.
You can take up to 10 catfish per day for regulated species, with no minimum size required for some species — but always double-check based on which catfish you are catching. Water-body-specific rules, especially on managed lakes and reservoirs, can set stricter limits than statewide defaults.
Key Insight: Maryland anglers can do their part to help the Chesapeake Bay ecosystem by catching and removing blue catfish from waterways. These non-native fish are top predators that consume native species such as blue crabs, white perch, and menhaden.
Size and Length Limits for Catfish in Maryland
Maryland’s size limit rules for catfish are straightforward compared to many other species. For blue catfish and flathead catfish, there are no size limits, catch limits, or closed seasons. You may keep a fish of any length, and the DNR encourages harvest regardless of size to help control the invasive population.
For channel catfish in non-tidal freshwater streams and rivers, Maryland does apply minimum size requirements in certain regulated areas. Channel catfish in Montgomery County parks waters carry a daily limit of 5 and a possession limit of 10, and local park or water body regulations may also specify minimum lengths. Always check the specific rules for the water body you intend to fish, as special management areas can override statewide defaults.
White catfish and bullhead species generally carry no minimum size limit in most of Maryland’s non-tidal waters. Size limits protect fish populations by ensuring individuals reach maturity and reproduce before being harvested — in Maryland, size regulations help maintain healthy fisheries for future generations. Even when a species has no mandatory minimum, practicing selective harvest and releasing smaller fish is a sound conservation habit.
For flathead catfish, notable specimens measuring 34 inches or longer are eligible for a FishMaryland Invasive Species Award. Landing a trophy flathead can earn you official recognition from Maryland DNR while simultaneously helping the ecosystem.
Legal Methods for Catching Catfish in Maryland
Maryland law defines the approved methods for recreational fishing, and catfish anglers need to stay within those boundaries regardless of which species they target. The core rule is that fishing must be done with hook and line.
A person may catch or attempt to catch fish only by hook and line, with the line held in hand, attached to a pole or rod held in hand, or attended in a manner that the fish voluntarily takes the bait or lure in its mouth. This covers standard rod-and-reel fishing, bank poles, and attended setlines — all common catfishing approaches in Maryland.
Popular and effective rigs for Maryland catfish include:
- Slip sinker rig — Add an egg weight to your main line and attach a leader with a swivel. It is versatile and can be used for all species of catfish, making it the most widely used setup for serious catfishers.
- Three-way swivel rig — Attach the three-way swivel to the main line, then attach a leader tied to a weight on one end and a leader with a hook to the other.
- Circle hook bottom rigs — The circle hook will snare the fish, so simply take the rod out of the holder and enjoy the fight.
For bait, fresh-cut fish is the most reliable option across all catfish species. For most situations, any kind of fresh-cut bait will entice catfish. What you cannot use are any of the shad (hickory or American) or herring species that are currently protected under Maryland regulations. For white catfish, fresh baits such as worms, shrimp, chicken liver, processed bait, and cut fish are all popular options.
A few important gear restrictions apply in Maryland freshwater:
- It is illegal for a person to possess or use minnows for bait while fishing.
- It is illegal to have in possession while fishing more than 1 quart of cut bait.
- It is illegal to transport live blue and flathead catfish into another body of water; anyone in violation of this rule can be fined up to $2,500.
For tidal waters, there are licenses that allow you to use hook and line or archery equipment to harvest and sell Chesapeake Channa, and finfish trotlines to harvest and sell blue and flathead catfish caught from tidal waters. Bowfishing for invasive catfish is a growing pursuit in Maryland and is a legal and effective removal method on tidal waters when the appropriate license is held.
Fishing License Requirements for Catfish in Maryland
Every person 16 years of age or older must possess a license to sport fish recreationally in Maryland, unless specifically exempt. The type of license you need depends entirely on where you plan to fish for catfish.
Maryland’s angling regulations divide waters into two main categories — nontidal (freshwater) and tidal (Chesapeake Bay, coastal, and their tributaries) — and the license type you need depends entirely on where you fish. Catfish anglers targeting blue cats on the tidal Potomac need a different license than those fishing channel cats at an inland reservoir.
Here is a breakdown of the primary license types relevant to catfish anglers, with fees that have been in effect since June 1, 2025, and remain valid throughout 2026:
| License Type | Resident Fee | Non-Resident Fee | Best For |
|---|---|---|---|
| Annual Non-Tidal/Freshwater | $20.50 | $30.50 | Inland rivers, reservoirs, ponds |
| 7-Day Non-Tidal/Freshwater | $7.50 | Reciprocal rate | Short trips to freshwater |
| Chesapeake Bay & Coastal Sport Fishing | $15.00 | $22.50 | Tidal Potomac, Bay tributaries |
| Resident Senior Consolidated (65+) | $5.00–$12.00 | N/A | Both fresh and tidal waters |
Every angler aged 16 or older must carry one of those licenses to fish, unless they qualify for an exemption. Key exemptions include anglers under 16, active-duty Maryland military residents on leave with official orders, and anyone fishing on a designated Free Fishing Day.
Any Maryland veteran who has received a Purple Heart qualifies for a 50 percent discount on hunting and fishing licenses. Complimentary fishing licenses are available to Maryland residents who are 100 percent service-connected disabled veterans, former prisoners of war, and veterans determined to be unemployable by the U.S. Department of Veterans Affairs.
If you plan to fish the tidal Potomac River specifically, note that a resident of Maryland possessing a valid Maryland Nontidal Sport Fishing License issued in that person’s name can fish from the Virginia banks of the Potomac River opposite the shore of Maryland without a Virginia fishing license. You can buy your license online through the Maryland DNR’s COMPASS portal, at a DNR Service Center, or at participating tackle shops and outdoor outfitters.
Important Note: Getting caught without a valid license is not just a small fine — it can cost you your fishing privileges entirely. Maryland’s HB 1304, introduced in the 2026 legislative session, proposes mandatory suspension of fishing privileges for anyone charged with recreational fishing without a license on or after September 1, 2025. Verify this legislation’s final status with Maryland DNR.
Best Catfish Fishing Spots in Maryland
Maryland’s geography gives catfish anglers access to an impressive range of waters — from the massive tidal Potomac to the Susquehanna River system, Eastern Shore rivers, and the Chesapeake Bay tributaries. Each water type offers a different catfishing experience.
Tidal Potomac River — The tidal Potomac River remains the premier blue catfish fishery in Maryland and is a great place to start. Blue catfish live mainly in fresh water and are found in the tidal Potomac River, preferring large rivers with deep channels, a swift current, and a sandy bottom. The stretch from the Wilson Bridge south to the Maryland-Virginia line consistently produces fish well over 50 pounds.
Susquehanna River (Below Conowingo Dam) — On the Susquehanna River, the area from Conowingo Dam to Lapidum can produce not only blue catfish but also channel and flathead cats as well. This water is swifter and rockier than other tidal systems, and anchoring behind islands, bridge trestles, or at the mouths of Deer and Octoraro Creeks can yield fish throughout the spring and summer when the Conowingo Dam releases water.
Patuxent River — The Patuxent is one of the most accessible catfish rivers on Maryland’s Western Shore. The Benedict Bridge, which crosses the Patuxent River, is a known blue catfish hotspot. Deep holes and channel areas below the bridge concentrate catfish year-round, and the river is reachable from Kings Landing Park and other public access points.
Choptank River and Eastern Shore Systems — On tidal systems like the Patuxent and the Choptank, look for deeper holes and channel areas that will draw cats, and keep an eye on the tides. Over time, blue catfish have found their way to other tidal flows such as the Susquehanna, Choptank, Patuxent, and several other Eastern Shore systems. The Choptank near Cambridge and Denton offers solid action and easy bank access.
Chester River — The annual Chester River Catfish Tournament, hosted by the Maryland Wildlife & Heritage Association, promotes the removal of non-native and invasive species while raising money for Maryland conservation, with thousands of dollars in prize money awarded for the largest blue, flathead, and channel catfish. The Chester River’s tidal reaches hold large populations of blue catfish and are well worth exploring.
For anglers fishing Montgomery County parks, licensed anglers may fish from the shoreline year-round at Pine Lake at Wheaton Regional Park, Lake Needwood and Lake Frank at Rock Creek Regional Park, and Little Seneca Lake at Black Hill Regional Park. These waters hold channel catfish and bullhead species and are excellent options for family outings close to the DC metro area.
Pro Tip: Fish deeper structure, current breaks, and dawn/dusk windows as water temperatures rise — this applies especially to blue catfish on the Potomac and Patuxent during summer months, when fish push into deeper, cooler water during midday.
Maryland catfish fishing rewards anglers who understand the rules and pick the right water. With no closed season and no bag limits on the invasive blue and flathead catfish, you have more opportunity here than in almost any other state. Check the 2026 Maryland Fishing Guide on eRegulations for the full freshwater and tidal regulation tables before your next trip, and report invasive catches through Maryland DNR’s invasive species resources to help protect the Bay.
If you fish catfish in neighboring states as well, our guides on catfish fishing regulations in Virginia and catfish fishing regulations in Pennsylvania cover the rules just across Maryland’s borders. You can also explore regulations in North Carolina, New Jersey, New York, Tennessee, Georgia, Ohio, and Texas for a broader look at how catfish rules vary across the country.