What is a vernal pool?
Vernal pools are small ponds that appear, like clockwork, in shallow depressions in certain woods every spring. Filled with rain and melted snow, vernal pools eventually dry out in the heat of summer. That’s part of what makes them so special to see in spring.
Because of their temporary nature, vernal pools aren’t home to fish. Instead, amphibians like wood frogs and spotted salamanders lay their eggs here, as do some insects. These particular species have evolved to lay their eggs in vernal pools, and can’t breed anywhere else.
Vernal pools are fascinating places, but they’re also extremely sensitive and best viewed from solid ground. Massachusetts has strong regulations that protect vernal pools, but we all need to do our part to keep these special habitats safe.
Where can I view a vernal pool around Buzzards Bay?
There are dozens of vernal pools in the Buzzards Bay watershed – from Westport all the way to Woods Hole. You can see where all the certified vernal pools in Massachusetts are located on this interactive map.
To make it easy for you, we’ve rounded up 13 spots where you can take a walk this spring and see a vernal pool. But before you go, remember – vernal pools are delicate habitats. Please enjoy the view from a distance, and keep dogs and children away from the water to protect eggs and small species.
1. Dunham’s Brook Conservation Area (Westport)
Follow the easternmost trail at this Westport Land Conservation Trust property to the edge of an extensive forested wetland/vernal pool community. Visit near dusk, and you’ll be treated to a loud spring chorus of mating frogs.
2. Copicut Woods (Fall River)
The Trustees’s Copicut Woods is part of the Southeastern Massachusetts Bioreserve. This 13,600-acre area along the Fall River/Freetown border is full of wetlands. As you walk the three miles of trails at Copicut Woods, you’ll pass vernal pools and a special cedar swamp.
3. Parsons Reserve (Dartmouth)
The Dartmouth Natural Resources Trust’s Parsons Reserve is home to a large vernal pool that thrives with many species in spring. Spot it from the Green Trail, in the back corner of the property.
4. Demarest Lloyd State Park (Dartmouth)
From the northwest corner of the parking lot at Demarest Lloyd State Park, a trail leads through the salt marsh and brings visitors to a beautiful vernal pool in the woods.
5. Flora B. Peirce Nature Trail (New Bedford)
The city-owned Flora B. Peirce Nature Trail is one of New Bedford’s best-kept secrets. The vernal pool here is just one of the surprises hidden in this natural area in the North End.
6. Shaw Farm Trail & Nasketucket Bay State Reservation (Fairhaven/Mattapoisett)
The Coalition’s Shaw Farm Trail connects the local bike path with Nasketucket Bay State Reservation, where there are two certified vernal pools. Together, these trails offer a great spring day of exploration through the woods to the shores of Nasketucket Bay.
7. Old Aucoot District (Mattapoisett)
The vernal pool in the Old Aucoot District is so large it has a name: Grace Pond (even though it’s actually a vernal pool). Stop in at this Mattapoisett Land Trust property off Aucoot Road for a springtime visit.
8. Doggett’s Brook Recreational Area (Rochester)
Just behind the Dexter Lane ball fields, explorers can enter Doggett’s Brook Recreational Area. Look for a large vernal pool at the back of the field where the loop trail begins.
9. Rounseville II Preserve (Rochester)
On the other side of Route 105 from Doggett’s Brook Recreational Area, explore the Wildlands Trust’s Rounseville II Preserve. Look for the vernal pool at the base of the hill in the property’s back corner.
10. Myles Standish State Forest (Carver/Plymouth)
Myles Standish State Forest is known for its trees and cranberry bogs, but there are vernal pools here, too! Look for one of several certified vernal pools around Barretts and East Head ponds.
11. Four Ponds Conservation Area – Bourne Town Forest (Bourne)
Vernal pools and wetlands are common in the woods at Four Ponds Conservation Area, which sits next to Bourne Town Forest. Explore the loop trails here, and listen for frogs to help tell you where the vernal pools are.
12. Goodwill Park/Long Pond (Falmouth)
Goodwill Park is a gateway to Long Pond, part of Falmouth’s extensive glacial moraine trail. Look for several vernal pools along the trails that lead from Goodwill Park toward the pond.
13. Beebe Woods/Peterson Farm (Falmouth)
As you explore Beebe Woods’ network of trails, you’re sure to find ponds and pastures, but there are vernal pools here, too! Look for one along the trail in the property’s northwest corner.
What types of species live in vernal pools?
Once you’ve spotted a vernal pool, you might be wondering what’s happening beneath the surface. Amphibians like woods frogs and spotted salamanders gather at vernal pools during early spring rain storms to breed in these unique little wetlands. In vernal pools, their jelly-like egg masses are safe from fish and other large predators. Once the eggs hatch, young frogs and salamanders grow up and depart before the pool dries up. You might think of vernal pools as amphibian elementary school!
Here are a few species that are probably living in a vernal pool you visit:
- Spotted salamanders: These yellow-spotted salamanders – which can grow to nearly ten inches long! – will stay in a vernal pool for just a few days to mate and lay their eggs before returning to their burrows. Light brown hatchlings will emerge a month or two later.
- Wood frogs: Black-“masked” wood frogs are another species that breed exclusively in vernal pools. In late winter and early spring, wood frogs gather in huge numbers at vernal pools and search for a mate.
- Fairy shrimp: These tiny crustaceans are one of the first vernal pool species to hatch – they’ve even been seen swimming under the ice in frozen vernal pools! In addition to being cool little dudes, fairy shrimp provide an important source of food for other species that use vernal pools.
- Caddisfly larvae: Caddisflies are moth-like insects, but the larvae are aquatic. You can sometimes find caddisfly larvae hidden in a cocoon of spiky pine needles in vernal pools.
- Red-spotted newts: Red-spotted newts don’t require vernal pools, but they will use them if they’re there. You might see small brown newt larvae or greenish-colored adults swimming in a vernal pool. Nearby, look for land-dwelling juveniles, which are an unmistakable bright orange color.
- Spring peepers: Like the red-spotted newt, spring peepers don’t need vernal pools, but they like them. These tiny frogs hibernate all winter and emerge in early spring. Listening to their calls ring through the woods on a cool, wet March evening is a true delight for winter-weary outdoor explorers.