What You'll Find in the Poquonnock River

The Poquonnock River is a tidal estuary in Groton, Connecticut, where the Connecticut River system meets Long Island Sound. The river holds striped bass as its primary draw, along with shad during spring runs and bluefish in summer and fall. The lower river, from the Route 117 bridge down to the sound, is where most fishing happens—it's brackish water that shifts with the tide and holds fish year-round, though spring and fall are most productive.

Access is straightforward: you can fish from the Route 117 bridge area, from boat launches at Groton Long Point, or by wading the shallower sections near the mouth. The river is narrow—roughly 200 yards across at its widest—so it doesn't require a long boat run to reach good water. Tidal movement is the main factor that determines where fish hold and when they feed, so understanding the tide schedule for your fishing day matters more than time of day alone.

Key Takeaways

  • Striped bass are the main target from April through November, with peak fishing in May and September when shad and baitfish move through the river.
  • The Poquonnock is a tidal river, so incoming tide typically produces better fishing than slack or outgoing water, especially near the Route 117 bridge.
  • Connecticut saltwater fishing regulations require a saltwater permit for anyone 16 and older; the Poquonnock is tidal saltwater, so the permit applies here.
  • Boat access is available at Groton Long Point and other local ramps; shore fishing from the bridge and nearby banks works well during moving tides.
  • Shad run hard in April and May, and bluefish show up in July through October, giving you multiple target species across the season.

Seasons and What Fish Are Active

Spring (April and May) is when the Poquonnock comes alive. Shad move upriver to spawn, striped bass follow them, and the water temperature climbs into the 50s and 60s. This is the most reliable time to catch numbers of fish. Shad darts and small spoons work well during this window, and live shad or herring will draw stripers if you can get them.

Summer (June through August) slows down considerably. Water temperatures climb into the 70s, and fish move deeper or toward the mouth where cooler water enters from the sound. Early morning and evening fishing produces better results than midday. Bluefish begin showing in July and stay through August, though they're not as consistent as spring stripers.

Fall (September and October) brings a second strong bite. Striped bass return to feed heavily as water cools, and shad make a secondary run. This period often rivals spring for consistent action. By November, water temperatures drop into the 50s and fishing slows, though winter stripers are still catchable on live bait or slow-moving lures near deeper holes.

Tides, Currents, and Best Fishing Times

The Poquonnock is entirely tidal, which means water level and current direction change roughly every six hours. Incoming tide—when water rises and flows upriver—is almost always better than outgoing or slack water. Fish position themselves to intercept baitfish moving with the current, so they're more aggressive and easier to locate during a strong incoming push.

The Route 117 bridge is the focal point for most fishing because the current funnels through the bridge pilings, creating a natural choke point where stripers and shad congregate. Fish the incoming tide here and you'll see consistent action. The area just below the bridge, where the river widens slightly, also holds fish during the incoming push.

Slack tide—the brief period when current stops before reversing—is the slowest time. Many anglers skip slack and fish the hour or two before and after, when current is moving steadily. Check tide tables for your fishing day; the NOAA tide station for New London, Connecticut, is close enough to give you accurate predictions for the Poquonnock.

Regulations and Permits You Need

Connecticut requires a saltwater fishing permit for anyone 16 years old and older. The Poquonnock is tidal saltwater, so the permit applies. You can obtain the permit through the Connecticut Department of Energy and Environmental Protection (DEEP) website or at most tackle shops in the area. The permit is inexpensive and valid for one year from the date of purchase.

Striped bass have a minimum size of 18 inches and a daily limit of two fish per person in Connecticut. Shad have no size or bag limit during the open season (April through May). Bluefish have a 12-inch minimum and a 10-fish daily limit. Always check the current DEEP regulations before you fish, as rules can change year to year.

No special launch fees apply at Groton Long Point, though parking is limited and fills quickly on weekends. Arrive early or fish from shore if boat access is crowded. The Route 117 bridge area has roadside parking, though space is tight during peak season.

Tackle, Lures, and Bait That Work

For striped bass, small spoons (1/2 to 1 ounce) in silver or gold work well during the shad run. Shad darts and tube jigs also produce, especially in the 2- to 3-inch range. Live shad or herring are the most reliable bait if you can source them; cast them near the bridge pilings or along the deeper banks and let the current work them. Soft plastics rigged on 1/4- to 1/2-ounce jigs work during slower periods.

For shad, small shad darts (1/8 to 1/4 ounce) are the standard. Cast upstream and let the current swing them through the strike zone. Shad are aggressive during the spawn and will hit quickly, so stay alert.

Bluefish hit larger lures and live bait. Use 1- to 2-ounce spoons, small plugs, or live mackerel. Bluefish have sharp teeth, so use a wire bite leader or 30-pound fluorocarbon to avoid cut-offs.

How to Access the River

The easiest shore access is from the Route 117 bridge in Groton. Park along the road (space is limited) and fish from the bridge or the banks below. This spot is productive during incoming tide and requires no boat. The water is shallow enough to wade in places, though current can be strong during peak tide.

Groton Long Point has a public boat launch with parking. The ramp is well-maintained and provides access to the lower river and the mouth where it meets the sound. From the launch, you can run upriver to the bridge area or fish the deeper water near the point. Other local ramps in the Groton area also provide access; check with local tackle shops for current conditions and any seasonal closures.

If you fish from a boat, a 16- to 18-foot center console or open boat is ideal for the Poquonnock. The river is narrow and shallow in places, so avoid heavy draft. Anchor near the bridge pilings during incoming tide or drift the deeper channels near the mouth.

What Makes the Poquonnock Different

The Poquonnock is small and tidal, which means it concentrates fish in predictable spots rather than spreading them across a large area. This makes it easier to locate fish than on bigger rivers, but it also means fishing pressure can be high during peak season. The narrow channel and strong current create natural feeding zones, so you don't need to cover a lot of water to find action.

The river's proximity to Long Island Sound means it receives fresh baitfish runs from the sound, which keeps stripers and bluefish moving through. Spring shad runs are particularly strong here because the river is a known spawning ground. If you're new to Connecticut fishing or prefer a smaller, more intimate setting than the Connecticut River proper, the Poquonnock delivers consistent fishing without the crowds of larger systems.

Frequently Asked Questions

Do I need a boat to fish the Poquonnock?

No. The Route 117 bridge is productive from shore, and you can wade sections of the lower river. A boat gives you more flexibility and access to deeper water, but shore fishing during incoming tide at the bridge is reliable and requires no launch fee.

What's the best month to fish here?

May and September are the most consistent. May has the spring shad run and aggressive stripers. September brings cooler water and heavy feeding as stripers prepare for winter. April and October are also good; June through August are slower.

Can I fish the Poquonnock in winter?

Yes, but fishing is slower. Striped bass are still present in deeper holes and near the mouth, especially on live bait. Water temperatures drop into the 40s, so dress warmly and fish during the warmest part of the day.

What size striped bass do I typically catch here?

Most stripers in the Poquonnock run 18 to 24 inches. Larger fish (30+ inches) are less common but do show up, especially in fall. The river's size and food supply support good numbers of schoolie-sized fish rather than trophy-class stripers.

Is the water clean and safe to fish?

The Poquonnock is a working estuary with industrial history, so water quality varies. Check current advisories from DEEP before fishing. Most anglers fish here regularly without issue, but avoid swallowing water and wash your hands after handling fish.