Cocheco River Watershed
Coldrain Pond lies in a forested area north of Birch Hill Road. There is no development on it shoreline, which is comprised of emergent wetland. A small stream flows out of the eastern end of the pond and runs south, crossing Birch Hill Road. The stream passes through the backyards of several homes and then flows into Club Pond. The shoreline of this 40 acre pond is sparsely developed with a few homes at its northern and southern tips. Ela River flows out of the southern end of Club Pond, and passes under Old Bay Road, into a small forested area. It flows southeast, along the Henry Wilson Highway, passing a dozen homes and several industrial facilities. The river turns east and flows into a wide area of emergent wetland before crossing into Farmington on its way to join the Cocheco River.
The Mad River originates in a forested area on New Durham’s border with Alton, just north of Ten Rod Road. It flows east along this road, passing a farm and a few houses before crossing into Farmington.
Chalk Pond and Marchs Pond sit along Birch Hill Road, which separates the two ponds with a narrow causeway. Both of these ponds have a moderate level of development along their shores, with the highest density of homes along Birch Hill Road. Water flows from Chalk Pond, under the causeway, and into Marchs Pond, where it then drains into Hayes Brook. The brook flows south along Birch Hill Road for a mile, passing homes in the village of Coburn. It then crosses miller road and turns east. The brook flows through Jennings Forest and then joins the Cocheco River.
The Cocheco River originates in a forested area along Mountain Pasture Road. It flows south along the road, passing several farms, and runs through Jennings Forest. The river enters a small emergent wetland and then turns east into Middleton.