MILL BROOK SUB-BASIN
The Mill Brook watershed is located within three different townships: Middletown and a small portion of Colchester in Delaware County, and Hardenburgh in Ulster County. There are no population centers located in this sub-basin.
The Mill Brook mainstem drains directly into the Pepacton Reservoir. The majority of the land along Mill Brook mainstem is owned by a private club called the Tuscarora Club. The stream is managed by the Tuscarora Club to preserve quality fishing habitat along the mainstem. The Mill Brook mainstem is a fourth order stream. Clark Hollow is one major tributary that enters the Mill Brook mainstem in addition to numerous unnamed tributaries. Tributaries within this sub-basin seem to have a small impact on the mainstem and appear
to be fairly stable.
The drainage area of Mill Brook is approximately 25.36 square miles and the mainstem is 11.2 stream miles from the headwaters to the outlet of the Pepacton Reservoir. The land is predominately forested along the majority of the mainstem. The average annual rainfall in the w
atershed can range from 35-41 inches/year at the lower portion of the sub-basin to 41-51 inches/year in the headwaters.
EXISTING RECREATIONAL ACCESS
Much of the Mill Brook valley is privately-owned, however opportunities exist near the extreme headwaters – where much is Catskill Forest Preserve, and at its mouth – the Pepacton Reservoir – owned by the City of New York.