Potomac River (Tidal)

Decades of Bassmaster Elite, FLW/MLF Pro Circuit and BFL events run from Smallwood State Park and National Harbor; hydrilla and milfoil beds in the big feeder creeks make it one of America's premier tidal bass fisheries.
Maryland~89,000 acresMAX DEPTH 60 FTCLARITY STAINED TIDAL RIVER — 1-3 FT VISIBILITY, CLEARER INSIDE THE SAV BEDS LATE SUMMER
WATER TEMP77°F−5.9°F in 13 daysACCOTINK CREEK AT KEENE MILL RD AT SPRINGFIELD, VA · 9 mi
Measured Monday, September 14, 2026 · refreshed daily · the guide report reads these for you
Potomac River (Tidal) depth contours — shallow flats bright, the creek channel and deep basin dark
Potomac River (Tidal) surveyed depth — open the app for the live, zoomable map

The fishery

Potomac River (Tidal) — Washington DC to the US-301 bridge (MD/VA). 89,000 acres, 60 ft at its deepest. Decades of Bassmaster Elite, FLW/MLF Pro Circuit and BFL events run from Smallwood State Park and National Harbor; hydrilla and milfoil beds in the big feeder creeks make it one of America's premier tidal bass fisheries. Alongside largemouth it carries northern snakehead, blue catfish, striped bass and white perch. Forage runs to killifish, mummichog and bluegill.

Species

Largemouth bass · Northern snakehead · Blue catfish · Striped bass · White perch · Crappie

On BassHawk

Everything below points at one goal — finding the most, and the biggest, largemouth bass on Potomac River (Tidal).

Mapped on BassHawk

Traced from pre-dam survey sheets — the roads, foundations and creek beds that were there before the water.

Getting on the water

Columbia Island Marina (upper end, near (marina)
Fort Washington Marina (Piscataway Creek (marina)
Leesylvania State Park ramp (Woodbridge (marina)
Marshall Hall boat ramp (Charles Co MD, (marina)
Sweden Point Marina, Smallwood State Par (marina)

What a guide report looks like

A complete, real report for Potomac River (Tidal) — nothing held back. It ran on that day's conditions; open the app for today's.

SAMPLE GUIDE REPORT · WEDNESDAY, AUGUST 26, 2026

Stained summer water and dropping pressure mean bite early and late. Work the grass and shade through the heat.

WATER 73°FAIR 64°FWIND 4 MPH NNWCLARITY STAINED TIDAL RIVER — 1-3 FT VISIBILITY, CLEARER INSIDE THE SAV BEDS LATE SUMMERSEASON SUMMER

Water's sitting in the comfortable 73-degree range, the kind of temp where bass feed hard at dawn and dusk then tuck into the thickest shade they can find through midday. Stained water means they're less spooky and willing to hunt in shallower, thinner cover than they would in clear water. The pressure's dropping ahead of some weather rolling in, which fires them up. Grass is peak right now at the end of August, and you've got SAV beds sitting full. The sun's bluebird bright today, so expect the shallow bite to compress tight to dawn and dusk windows. If clouds roll in before they clear out, the feeding window stretches longer and shallower. Work the edges and holes in the grass early, then flip shade when the sun climbs.

The day's game plan

EARLY MORNING · 6:32 AM to 8:30 AM
Shallow grass beds and floating mats in 2 to 4 feet, focus on the outside edges and any clear lanes cutting through the vegetation. Work the mouth of small feeder creeks where they join the main flats.
Hollow-body frog, black or dark green, 2.5 to 3 inches, unweighted. Cast tight to the grass line and work it with a steady cadence, letting it sit for a beat when it lands. Push it across open pockets and drop it in any holes. Keep a tight line so you feel the strike.
Bass slide up shallow to feed when the light is low. Stained water lets them hunt in skinny cover and they'll chase a topwater frog over grass without hesitation. The pressure dropping before the weather pushes them to feed aggressively. You've got roughly 90 minutes of prime bite before the sun climbs and they duck for shade.
MORNING · 8:30 AM to 11:00 AM
Transition from shallow grass to the outside edges of the SAV beds, 4 to 6 feet. Work the hard-cover pieces (fallen trees, dock pilings, rock) that sit adjacent to the grass or in the first depth off the flats.
Bladed jig with a paddletail trailer, 3/8 ounce, white or chartreuse blade, dark blue or green trailer, 3 inches. Pitch it tight to cover and work it with a jigging motion, dragging it along the bottom and through the gaps between structure.
The sun's climbing and bass are leaving the grass for cooler, shaded spots. Hard cover next to grass gives them shade and access to the deep water they want to be near. Stained water makes a bladed jig's vibration work harder than a silent bait would. The chartreuse blade punches through the murk and draws strikes from fish that aren't looking directly at the bait.
MIDDAY · 11:00 AM to 3:30 PM
Deep shade: undercuts in fallen treetops, dock pilings and shadows, the thickest brush piles you can find, and inside the deeper SAV beds where the vegetation forms mats. Fish 6 to 10 feet or as shallow as 2 feet if there's overhead cover.
Wacky-rigged soft plastic stick, 5 to 6 inches, natural colors like watermelon or green pumpkin, flicked or dragged slowly right along the cover. Let it fall on a slack line, pause, and inch it through the densest spots. Keep the bait in contact with shade as long as possible.
Sun's at its peak and bass are locked tight to shade. They're not hunting, they're hiding and staying cool. A slow, light bait right in their face sometimes draws a strike out of pure irritation or hunger. The stained water helps here too because the low visibility lets them feel confident sitting in shallow, tight cover during daylight.
LATE AFTERNOON · 3:30 PM to 5:30 PM
Shallow grass beds again, 2 to 4 feet, same edges and pockets you worked early morning. Include any natural bowl-shaped depressions in the grass where water pools deeper.
Spinnerbait, 3/8 ounce, white or chartreuse skirt with a Colorado blade, fished steady and moderately fast along the outside of the grass line and through any lanes. Vary your speed, slow it down in open water and wind it quicker near the cover.
The sun angle's dropping and bass are beginning to slide back up from their midday deep spots. Spinnerbait covers water and the blade's thump works in stained water. The pressure's still dropping before the weather, which keeps them a bit more aggressive than usual. You're setting up for the evening feed.
EVENING · 5:30 PM to 7:00 PM
Shallow flats 2 to 5 feet, focus on creeks, pocket water between grass mats, and anywhere baitfish might be corraled. Work both the grass edges and the open sand flats near the vegetation.
Paddletail swimbait, 3.5 to 4 inches, shad pattern or pearl, 1/4 ounce. Cast and retrieve with a steady, natural swim. Work a wider area and cover more water than you did early morning. Let the bait's profile and motion do the work.
Light's dropping and bass are feeding hard now. This is the second prime bite of the day. Stained water means they're willing to hunt in shallower, thinner cover than they would be in clear water. Spoons and swimbaits produce well when bass are actively feeding and the water clarity is a step down from gin clear.
DUSK · 7:00 PM to 7:47 PM (sunset)
Shallow grass mats, floating vegetation, and feeder creek mouths, 1 to 4 feet. Work the same pockets and edges you fished at dawn, now on the dusk feed.
Hollow-body frog, dark colors (black, dark green), or a small buzzbait, 3/8 ounce, worked with purpose. Cast, pause, and work it deliberately. Keep your cadence steady so you feel any take.
This is the final push before dark. Bass are feeding hard in shallow water and topwater or buzzbait works best when the light is failing and bass can't see as far but are willing to hunt near the surface. Pressure's still dropping, which has them aggressive. You're capitalizing on the day's last light window.
NIGHT · 7:47 PM to midnight
Shallow grass mats, feeder creeks, and any water 2 to 6 feet with cover overhead. Bass will hunt through the grass and shallows all night once the sun drops.
Dark-colored soft plastics on a jig or Texas rig, 5 to 6 inches, black or dark green, 3/8 to 1/2 ounce. Feel your way through the cover with a slow drag and light pressure. You're fishing by feel and sound more than sight.
Once dark, bass lose light-based inhibition and hunt the shallows hard. They'll feed through grass, weeds, and shallow flats where they wouldn't venture in daylight. The stained water actually helps you night fish because the murk doesn't change much when the sun sets. Work slowly and methodically. Most anglers quit at dark but night fishing the Potomac in summer can be some of your best fishing if you're patient.

Where to fish

What to throw

How to work it

Pro tips

If conditions change

If the pressure stabilizes or rises after the front, or if the sun gets blocked by heavy clouds before evening, the shallow bite extends longer and spreads wider. Bass will hunt in open grass and thin cover during times they'd normally be tucked in shade. Keep your morning and evening game plan but watch for bonus shallow action in mid-morning and early afternoon. If the wind picks up and creates a chop or stain increase, shift heavier to bladed baits and vibration. If water clears unexpectedly (less likely given the tidal input), downsize everything, lengthen your leader, and fish more finesse. If the water muddies further, go darker colors and increase vibration, lean harder on black and blue plastics and chartreuse-blade spinnerbaits.

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