What Mashomack Preserve offers anglers

Mashomack Preserve is a 2,039-acre nature preserve on the eastern end of Shelter Island, between the North and South Forks of Long Island. The preserve sits on a peninsula that juts into Peconic Bay and Gardiners Bay, giving anglers access to productive saltwater flats, channels, and deeper water without the crowds of the main Sound. The property is managed by The Nature Conservancy and open to the public year-round, with fishing permitted from designated areas along the shoreline and from a maintained trail system that runs through the property.

The preserve's value to anglers lies in its shallow-water habitat. Flats along the bay side hold striped bass, bluefish, and weakfish during spring and fall migrations. The deeper channels and drop-offs near the bay mouth hold larger stripers and blues during summer. Bonefish and permit occasionally show in the shallows during warm months, though they are not reliable targets. The property also offers a quieter alternative to heavily fished public beaches and ramps, with the trade-off that you are walking to the water rather than launching a boat.

Key Takeaways

  • Mashomack Preserve offers walk-in saltwater access to Peconic Bay and Gardiners Bay, with striped bass and bluefish as the primary targets in spring, fall, and summer.
  • Fishing is permitted from the shoreline and designated areas, but you must stay on marked trails and respect posted boundaries to protect the preserve's habitat.
  • No motorized vehicles are allowed on the preserve; access is by foot only, and parking is limited to a small lot near the entrance.
  • The preserve is open dawn to dusk, and a small day-use fee applies; check The Nature Conservancy's website for current hours and any seasonal closures.
  • Best fishing occurs during slack tide on the flats and during the last two hours of the outgoing tide in the channels.

Seasons and target species

Spring (April through May) brings the first strong run of striped bass moving into the bays after winter in deeper offshore water. Fish range from 18 inches to over 40 pounds, and they feed aggressively on sand eels and small baitfish in the shallows. Early morning and late evening are most productive, and the flats on the bay side of the preserve hold the most consistent action. Water temperatures climb from the mid-50s to the low 60s, and fish move shallower as the season progresses.

Summer (June through August) shifts the bite deeper. Stripers and bluefish move into the channels and deeper holes as water temperatures climb into the 70s. Daytime fishing is slower; dawn and dusk are best. Bonefish and permit may appear in the shallows during July and August, but sightings are sporadic and depend on water clarity and temperature. Live bait—mullet, mackerel, or herring—works better than lures during the heat of summer.

Fall (September through November) is the strongest season. Striped bass and bluefish return to the shallows as water cools, and they feed heavily in preparation for migration. Fish are larger and more aggressive than in spring. The flats hold steady action from mid-September through October, and the channels remain productive into November. Water temperatures drop from the high 60s to the low 50s by late fall.

Winter (December through March) is slow. Some stripers remain in the deeper channels, but they are lethargic and difficult to target. Most anglers focus on other locations during these months. The preserve remains open, but fishing pressure is minimal and success is unpredictable.

Access, parking, and regulations

Mashomack Preserve is located at the end of Route 114 on Shelter Island. The entrance is marked, and a small parking area accommodates roughly 15 to 20 vehicles. Parking fills quickly on weekends during peak season, and there is no overflow lot. Arrive early or plan to visit on weekdays if possible. The preserve charges a day-use fee; check The Nature Conservancy's Shelter Island website for current rates and payment methods.

All access is on foot. No motorized vehicles, bicycles, or horses are permitted on the trails. The main trail system is well-maintained and marked, and it takes roughly 15 to 30 minutes to reach the water depending on which section you target. Fishing is permitted from the shoreline and designated overlooks, but you must stay on marked trails and respect all posted boundaries. The preserve protects sensitive nesting habitat for piping plovers and other shorebirds, and certain areas are closed seasonally (typically April through August) to protect breeding birds.

New York State saltwater fishing regulations apply. You do not need a license to fish in New York saltwater, but you must follow state size and possession limits. Striped bass have a 18-inch minimum and a one-fish daily limit (as of 2024, though this changes annually). Bluefish have a 12-inch minimum and a 10-fish daily limit. Check the New York Department of Environmental Conservation website before you fish to confirm current regulations, as they are adjusted each year based on stock assessments.

Tackle and technique for the flats

The flats at Mashomack are shallow—typically 2 to 4 feet at high tide and 1 to 2 feet at low tide. Light tackle works well and is more enjoyable than heavy gear. A 7- to 8-foot medium-power spinning rod with 15- to 20-pound braided line is standard. Fluorocarbon leader (20 to 30 pounds) reduces visibility in the clear water. Small topwater plugs, soft plastics (3 to 4 inches), and spoons are effective lures. Live bait—grass shrimp, sand eels, or small mullet—often outperforms artificials, especially during summer.

Sight-fishing is possible during clear-water conditions and low light. Polarized sunglasses are essential. Wade slowly along the flats and look for tails, wakes, or shadows. Stripers often hunt in small groups, and a single cast to a feeding fish is more productive than blind casting. If you see nothing, work the edges where the flat drops into deeper water; fish often patrol these transitions.

Tide matters. Slack tide (the period around high or low tide when water movement is minimal) concentrates fish and makes them easier to spot. The last two hours of the outgoing tide are also productive, as fish move into deeper water and feed along the channels. Incoming tide can be slow, especially if the water is clear and the sun is high.

Conditions and what to expect

Water clarity varies. After heavy rain or strong wind, the bays can turn murky, and sight-fishing becomes impossible. Calm, sunny days with light wind produce the clearest water and the best sight-fishing opportunities. Wind direction matters: a south or southwest wind pushes water into the bays and can improve clarity, while a north or northeast wind drains the bays and can make water stained.

The preserve is quiet and lightly fished compared to public beaches and ramps on the North Fork. You may encounter other anglers, but crowds are rare. The trails are open to all visitors—hikers, bird-watchers, and photographers—so expect to share the space. The preserve is also a working nature area, and you may see maintenance crews or research staff during your visit.

Facilities are minimal. There are no restrooms, no water, and no shade structures at the fishing areas. Bring water, sunscreen, and insect repellent. Mosquitoes and biting flies can be heavy during summer and early fall, especially near dawn and dusk. A head net or bug jacket is worth considering if you plan to fish during these periods.

Getting there and timing your visit

Mashomack Preserve is on Shelter Island, which is accessible by ferry from Greenport (North Fork) or Sag Harbor (South Fork). The Greenport ferry is the more direct route from the North Fork and takes roughly 10 minutes. The Sag Harbor ferry takes about 15 minutes. Both ferries run year-round, though schedules change seasonally. Once on Shelter Island, follow Route 114 east to the preserve entrance; it is roughly 5 miles from the Greenport ferry terminal.

Plan to arrive at least 30 minutes before sunrise if you want to fish the dawn bite. The preserve opens at dawn and closes at dusk, and fishing is not permitted outside these hours. During spring and fall, dawn and dusk are short, so plan accordingly. Bring a headlamp if you plan to fish the last hour before sunset.

Weekday visits are more pleasant than weekends, especially during peak season. The parking lot fills quickly on Saturday and Sunday mornings from May through October. If you can only visit on weekends, arrive by 6 a.m. or plan to fish the afternoon and evening instead.

Nearby alternatives and resources

If Mashomack is full or you want to explore other options, Shelter Island has other public access points. Dering Harbor, on the west side of the island, offers bay access and is less crowded than Mashomack. The North Fork has numerous public beaches and ramps, including Greenport's Stirling Basin and Orient Beach State Park. The South Fork offers access at Sag Harbor and Montauk, though these are more heavily fished and often more crowded.

The Nature Conservancy's Shelter Island website has current information on preserve hours, fees, and any seasonal closures. The New York Department of Environmental Conservation website publishes current fishing regulations and updates them annually. Local tackle shops in Greenport and Sag Harbor can provide up-to-date information on recent catches and conditions.

Frequently Asked Questions

Can I fish Mashomack in winter?

Yes, the preserve is open year-round and fishing is permitted in winter. However, fish are deep and lethargic, and success is unpredictable. Most anglers focus on other locations during December through March. If you do visit, target the deeper channels and use live bait rather than lures.

Do I need a New York fishing license for saltwater fishing at Mashomack?

No. New York does not require a license for saltwater fishing. However, you must follow all state size and possession limits, which change annually. Check the New York Department of Environmental Conservation website before you fish to confirm current regulations.

What is the best tide for fishing the flats?

Slack tide (around high or low tide) and the last two hours of the outgoing tide are most productive. During these periods, fish concentrate and feed actively. Incoming tide can be slow, especially if the water is clear and the sun is high.

Is wading allowed at Mashomack?

Yes, wading is permitted in the shallow areas. Stay on marked trails when approaching the water, and respect all posted boundaries. Certain areas are closed seasonally to protect nesting birds, so check for posted signs before you wade.

How far is Mashomack from the ferry terminal?

The preserve is roughly 5 miles from the Greenport ferry terminal, a 10-minute drive. From the Sag Harbor ferry, it is roughly 8 miles and takes about 15 minutes. Both ferries run year-round, though schedules change seasonally.