watershed
Watershed is a hydrological term, which has been adopted in other fields in a more or less figurative sense. It may refer to:
Hydrology
* Drainage divide, the line that separates neighbouring drainage basins
* Drainage basin, called a "watershe ...
.
The Smith River begins at the outlet of Tewksbury Pond in
Grafton, New Hampshire
Grafton is a town in Grafton County, New Hampshire, United States. The population was 1,385 at the 2020 census.
History
Originally granted in 1761, and re-granted in 1769, Grafton, like the county it resides in, takes its name from Augustus F ...
. The river flows southwest and then southeast through Grafton, passing through Kilton Pond. Continuing through
Danbury
Danbury is a city in Fairfield County, Connecticut, United States, located approximately northeast of New York City. Danbury's population as of 2022 was 87,642. It is the seventh largest city in Connecticut.
Danbury is nicknamed the "Hat City ...
, the river remains generally flat until shortly before reaching the Alexandria- Hill town line, where it enters a narrow valley and produces several miles of whitewater. Passing under the New Hampshire Route 3A bridge at the Bristol-Hill town line, the Smith River drops over Profile Falls and arrives at the Pemigewasset River.
U.S. Route 4
U.S. Route 4 (US 4) is a long United States highway that runs from East Greenbush, New York, in the west to Portsmouth, New Hampshire, in the east, traversing Vermont.
In New York, US 4 is signed North-South to reflect its alignment in the s ...
follows the Smith River from its source to Danbury. NH-104 follows the river from Danbury to the east side of Alexandria.