St. Lawrence River

The Smallmouth Factory — Cape Vincent Through the Thousand Islands to Massena
New York~75,000 acresMAX DEPTH 150 FTCLARITY GIN-CLEAR NORTHERN WATER — 8-15+ FT VISIBILITY; SMALLMOUTH SIGHT-FISHING TERRITORY
WATER TEMP65°F−4.8°F in 12 daysRICHELIEU R (LAKE CHAMPLAIN) AT ROUSES POINT NY · 116 mi
Measured Monday, September 14, 2026 · refreshed daily · the guide report reads these for you
St. Lawrence River shoreline outline
St. Lawrence River shoreline — depth survey in progress

The fishery

St. Lawrence River — Thousand Islands, Clayton & Waddington, NY. 75,000 acres, 150 ft at its deepest. Known for Smallmouth Factory — Cape Vincent Through the Thousand Islands to Massena. Alongside largemouth it carries smallmouth bass, northern pike, muskellunge and walleye. Forage runs to round goby, yellow perch fry and crayfish.

Species

Smallmouth bass · Largemouth bass · Northern pike · Muskellunge · Walleye · Yellow perch · Black crappie · Rock bass · Channel catfish

On BassHawk

Everything below points at one goal — finding the most, and the biggest, largemouth bass on St. Lawrence River.

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

Cedar Point SP Launch (marina)
Clayton French Creek Bay Launch (marina)
Massena Intake Launch (marina)
Paterson Street Launch (marina)
Whittaker Park Launch (marina)
Wilson Hill Launch (marina)

What a guide report looks like

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

SAMPLE GUIDE REPORT · WEDNESDAY, AUGUST 19, 2026

55-degree prespawn water, gin-clear river, largemouth staged on secondary structure hunting to spawn.

WATER 55°FAIR 65°FWIND 8 MPHCLARITY GIN-CLEAR NORTHERN WATER — 8-15+ FT VISIBILITY; SMALLMOUTH SIGHT-FISHING TERRITORYSEASON PRESPAWN

Water's in the high prespawn zone, just below the trigger window, and that means largemouth are on the move but not yet fired up on the shallows. They're staging on the structure that bridges deep winter holes and shallow spawning flats. Gin-clear water with 8 to 15 feet of visibility means they're keyed on natural profiles and precise presentations. The pressure is stable and steady, which keeps them predictable. Overcast skies all day will help keep them looking up and willing to chase longer than they would under a hard sun. Light SSW wind and cool air mean the shallows may warm slightly as the day goes on, but don't expect a classic prespawn bite yet; you're targeting committed fish on the highways they use to move shallow, not fish on spawning beds.

The day's game plan

EARLY MORNING · 6:10 AM to 8:30 AM
Secondary points and channel bends 12 to 18 feet deep, where creeks open into the main river.
Drop-shot rig with a natural-colored Party Minnow or finesse worm in electric shad or green pumpkin, 3/8 to 1/2-ounce weight, 12 to 24 inches above the hook. Work it slowly along bottom, letting the current help position the boat, ticking the bait in short hops.
This is prime solunar major water, and largemouth staging before spawn are hunting hard in early light. The clear water and overcast sky extend the window. They're positioned where they can access deep water but see forage moving on the shallowing structure. A slow, natural presentation matches the cool water and their feeding style at this temperature.
MORNING · 8:30 AM to 11:30 AM
Isolated boulder fields and sand-grass edges in 8 to 14 feet, scattered across the river. Work the transitions where shallow flats drop off to channel swings.
Ned rig with a 2 to 2.5-inch finesse worm in green pumpkin or watermelon, 1/8 to 3/16-ounce jighead, worked with light hops and small pauses right on the bottom.
As light builds, largemouth slide slightly shallower to hunt on the broken structure that feeds into deep water. They're not all-in on the flats yet, but they're looking up and willing to chase a small minnow-profile bait. The Ned rig is light enough for clear water and precise enough for the cool temperature. Current helps carry scent and makes the bait look alive with minimal effort.
MIDDAY · 11:30 AM to 2:30 PM
Deeper boulders and rock piles in 16 to 24 feet, the holding structure between daytime refuge and morning feeding zones.
Drop shot with a Half Shell or compact goby-colored plastic in smoke or silver, 3/8 to 1/2-ounce weight, fished vertically or with slight drifts to cover more ground. Tick bottom, pause, twitch gently.
The overcast will help, but as the day peaks, fish drop to more structure. In 55-degree water with clear visibility, largemouth conserve energy in deeper pockets of rock and current breaks. The drop shot keeps the bait right on their nose with minimal movement. Current and structure create feeding lanes even at midday, and the cool water keeps metabolism low enough that a few bites are still possible.
LATE AFTERNOON · 2:30 PM to 5:15 PM
Shallow sand-grass edges and secondary points 6 to 12 feet deep, especially those with hard bottom nearby.
Light jig with a 2-inch soft-plastic minnow or crayfish profile in natural brown or green, 1/4 to 3/8-ounce weight, dragged and hopped slowly on bottom.
As afternoon light mellows and the second solunar window approaches, largemouth begin looking shallow again. They're not yet committed to the spawning flats, but they're staging hard on the last structure before those flats. A light jig with a natural profile keeps the presentation subtle and allows you to cover ground methodically without spoking fish in the clear water.
EVENING · 5:15 PM to 6:45 PM
The same secondary points and channel-edge structure hit at dawn, 10 to 18 feet, but now with fresh light and the solunar major at 5:32 PM in your favor.
Drop-shot minnow in electric shad, 3/8-ounce weight, worked slowly and deliberately along bottom edges. Mix in pauses and slight vertical lifts to imitate a feeding goby or small shad.
This is your prime window. The solunar major at 5:32 PM coincides with evening light and a new feeding period. Largemouth are most willing to feed as light softens. In 55-degree prespawn water, they're gorging before the spawn trigger, and a natural minnow profile in clear water will draw reaction strikes. The overcast all day means light won't drop off as sharply, extending the window.
DUSK · 6:45 PM to 8:01 PM
Shallow flats bordering spawning habitat, 3 to 8 feet, hard bottom sand and gravel near deeper channel access.
Small hollow-body topwater or walk-the-dog style bait if water is calm, or a compact swimbait on a 1/4-ounce jighead if there's any ripple. Work the edges where flats meet structure, slow and intentional.
As the sun drops, largemouth may begin looking to the actual spawning grounds for the first time. In 55-degree water they're not spawning yet, but they're scouting. Dusk is when cautious shallow fish will bite. A topwater or small swimbait creates a profile they recognize and will chase in the low light. If clouds stay heavy and light drops fast, switch to the jig.
NIGHT · 8:01 PM to midnight
Deep current breaks and boulder fields 18 to 26 feet, stable structure where largemouth settle for the night.
Large drop-shot minnow or tube in dark goby colors, 1/2-ounce weight, worked slowly with longer pauses between ticks. Let the current position the boat and the bait.
In 55-degree water with overcast skies, night fishing produces but only if you're patient and precise. Largemouth retreat to stable deep structure after dark. A heavier drop shot in a dark profile is easier for them to locate in total darkness via lateral line. Long pauses let them inspect and commit. Current aids scent dispersal. Expect fewer bites but higher quality fish.

Where to fish

What to throw

How to work it

Pro tips

If conditions change

If the front comes through and pressure rises, switch to the darkest colors (black, junebug, dark goby) and fish tighter to cover, dropping deeper into boulders and staying in the densest structure. Downsize baits by half and slow your retrieve to almost nothing. If clouds break and sun hits hard, largemouth will pull deeper immediately; shift to 20 to 30-foot boulders and rock, stick with the drop shot, and focus on early morning and late evening. If wind picks up and creates stain or ripple, you can upsize slightly and use brighter colors (chartreuse tips, bright white), but the clear water here means overcompensating will spook fish faster than helping. Stay subtle. If water somehow gets clearer and visibility pushes past 15 feet, match it with even tinier baits (1.5 to 2-inch plastics) and longer leaders, and expect fish to be even more cautious and deeper than planned.

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