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Avalon Nature Preserve

Stony Brook
Hours

Tuesday–Sunday: April–May, 7:00 AM–7:00 PM; June–August, 6:00 AM–8:00 PM; September–October, 7:00 AM–7:00 PM; November–March, 7:00 AM–5:00 PM.

Closed Mondays. No restrooms are available; carry out all waste.
Dog Policy

restricted

Dogs must remain leashed at all times. Owners must pick up after their dogs.
Address

200 Harbor Road, Stony Brook, NY 11790

Park Type

Park

Acreage

8.16 acres

Plan your visitBefore you go

Check current details with the operator before heading out.

Hours & season

Tuesday–Sunday: April–May, 7:00 AM–7:00 PM; June–August, 6:00 AM–8:00 PM; September–October, 7:00 AM–7:00 PM; November–March, 7:00 AM–5:00 PM.

Closed Mondays. No restrooms are available; carry out all waste.

Parking & entrance

Parking is listed; entrance details are not provided.

Fees & residency

Not listed — confirm with the operator.

Restrooms

Not listed — confirm with the operator.

Dog rules

restricted

Dogs must remain leashed at all times. Owners must pick up after their dogs.

Accessibility

Not listed — confirm with the operator.

Listing source
Suffolk County Parks GIS
Last verified
Not yet recorded
Listing updated

Listing updates may include edits or imports. They do not indicate that visitor information was verified.

Missing information does not mean a facility is unavailable or access is unrestricted.

About Avalon Nature Preserve

  Avalon Nature Preserve Nestled in the heart of Stony Brook, NY, Avalon Nature Preserve is a serene sanctuary that spans 216 acres of diverse landscapes, inviting visitors to immerse themselves in the natural beauty of Long Island. Located at 200 Harbor Road, the preserve is free and open to the public, offering a rich tapestry of trails that guide you through five distinct habitats, each with its own unique charm. Hours of Operation: Spring (April-May): 7:00 AM - 7:00 PM Summer (June-August): 6:00 AM - 8:00 PM Fall (September-October): 7:00 AM - 6:00 PM Winter (November-March): 7:00 AM - 5:00 PM Closed...

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Mondays Please note that as of August 19, 2024, the preserve is closed until further notice. Explore the Trails: Mill Pond Trail (Boardwalk Trail - 0.35 miles): Begin your journey at the boardwalk entrance on Harbor Road, where you'll be immediately transported into Avalon’s oldest and most developed area. The boardwalk is flanked by the historic Mill Pond on one side and a small freshwater pond teeming with turtles and waterfowl on the other. As you make your way up the stone steps, you'll arrive at the Frog Pond and then the Old Field Meadow, home to the labyrinth and the Prometheus Sculpture. This trail offers a gentle introduction to the preserve, perfect for calming the mind and centering yourself. Coastal Corridor (Red Trail - 0.3 miles, Yellow Trail - 2.2 miles): This trail serves as a connector between Rhododendron Drive and the Shep Jones Lane parking lot. As you navigate the undulating hills of the Coastal Corridor, you'll encounter large glacial boulders and occasional glimpses of Long Island Sound. This section provides a peaceful and scenic route, ideal for those looking to explore the preserve's varied terrain. Hilltop Meadow (Yellow Trail - 2.2 miles, Orange Trail - 1.1 miles): Formerly agricultural fields, the Hilltop Meadow is now a vibrant expanse of wildflowers and native grasses, especially stunning in mid-summer. This area is perfect for a walk or run, offering open fields surrounded by woodlands and hedgerows. The meadow’s dynamic landscape changes with the seasons, making it a compelling visit throughout the year. During winter, the muted colors and longer shadows create a tranquil and expansive view. Forest Sanctuary (Yellow Trail - 2.2 miles, Green Trail - 1.0 miles, Blue Trail - 0.8 miles): For those seeking solitude and a deeper connection with nature, the Forest Sanctuary is the perfect retreat. Shaded by a canopy of oak, hickory, and beech trees, these trails offer a more secluded and immersive experience. As you wander through this section, you'll encounter an array of flora and fauna, along with the diverse understory that defines this part of the preserve. The well-marked trails provide a peaceful and reflective escape from the hustle and bustle of daily life. Visitor Information: Avalon Nature Preserve is more than just a place to walk; it's a community dedicated to conservation and education. Managed by the

Invasive Species

iMap record
5 Records
3 Species
Jul 7, 2025 Latest Report

Latest reported item: Beech Scale on .

Beech leaf disease nematode Litylenchus crenatae mccannii Microorganism · Terrestrial · Aug 26, 2020
3 records
Beech Scale Cryptococcus fagisuga Animal Insect · Terrestrial · Jul 7, 2025
1 record
Mile-a-minute-weed Persicaria perfoliata Plant · Terrestrial · Oct 10, 2019
1 record

Amenities

Conveniences

  • Parking

Trails

No hiking trails are listed for this park yet.

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