Hadlock Ponds

Upper Hadlock Pond North

The Hadlock Ponds provide potable water for the Town of Mount Desert. Upper Hadlock Pond is located east of State Route 198 about two miles (3.2 kilometers) north of the Village of Northeast Harbor. Lower Hadlock Pond is west of State Route 198 about a mile (1.6 kilometers) north of the Village of Northeast Harbor. The mountains in the photograph above are from, left to right, Parkman Mountain (barely visible), Bald Peak, Gilmore Peak and Cedar Swamp Mountain.

Upper Hadlock Pond, shown in the photographs above and immediately below, has a surface area of 35 acres (0.14 square kilometers) and the surface is at an altitude of 228 feet (69.5 meters) above sea level. The maximum depth of the pond is 37 feet (11.3 meters) and the average depth is 14 feet (4.3 meters). The pond is mesotrophic, that is, it has moderate levels of vegetation and dissolved oxygen. The fish in Upper Hadlock Pond include Brook Trout, Brown Trout, Smelt, Eel, White Sucker, Minnows, Banned Killifish, Punpkinseed Sunfish and Redbreast Sunfish.

Upper Hadlock Pond East Shore

The photograph below shows Lower Hadlock Pond with Norumbega Mountain in the background. The surface area of Lower Hadlock Pond is 32 acres (0.13 square kilometers) and is 188 feet (57.3 meters) above sea level. The maximum depth of the pond is 40 feet (12.2 meters) and the average depth is 18 feet (5.5 meters). The pond is mesotrophic, that is, it has moderate levels of vegetation and dissolved oxygen. The fish in Lower Hadlock Pond are Brook Trout, Brown Trout, Rainbow Smelt, American Eel, White Sucker, Minnows, Banned Killifish, Punpkinseed Sunfish, Hornpout (Brown Bullhead Catfish) and White Perch.

Lower Hadlock Pond

The next photograph shows some Fern Pondweeds (Potamogeton robbinsii) in Lower Hadlock Pond. These and other aquatic plants help oxygenate the water until they die. As they decompose, they extract oxygen from the water, which is not healthy for the fish.. The presence of vegetation in a pond is a mixed blessing.

Fern Pond Weed in Lower Hadlock Pond

Upper Hadlock Pond is on State Route 198. There are several parking area around Upper Hadlock Pond. Lower Hadlock Pond is at the base of  Norumbega Mountain and hidden from view by a forest. Look for Lower Hadlock Pond Road to the west of State Route 198. This road leads to the southern tip of Lower Hadlock Pond where there is a small parking area. The section of this road that leads to a pumping station is restricted to official vehicles. Watch for the sign identifying this section.

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