river
A river is a natural stream of fresh water that flows on land or inside Subterranean river, caves towards another body of water at a lower elevation, such as an ocean, lake, or another river. A river may run dry before reaching the end of ...
in western
New Hampshire
New Hampshire ( ) is a U.S. state, state in the New England region of the Northeastern United States. It borders Massachusetts to the south, Vermont to the west, Maine and the Gulf of Maine to the east, and the Canadian province of Quebec t ...
in the
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
. It is a tributary of the
Connecticut River
The Connecticut River is the longest river in the New England region of the United States, flowing roughly southward for through four states. It rises 300 yards (270 m) south of the U.S. border with Quebec, Canada, and discharges into Long Isl ...
, which flows to
Long Island Sound
Long Island Sound is a sound (geography), marine sound and tidal estuary of the Atlantic Ocean. It lies predominantly between the U.S. state of Connecticut to the north and Long Island in New York (state), New York to the south. From west to east, ...
.
Oliverian Brook rises in the town of Benton, New Hampshire, on the western slopes of Mount Moosilauke on the northern outskirts of the village of Glencliff, at the juncture of Slide Brook and Still Brook. The brook flows south to near the center of Glencliff in the town of Warren before taking a sharp turn to the northwest and flowing through the center of Oliverian Notch, the westernmost of the major passes through the White Mountains.
The brook passes through a
flood control
Flood management or flood control are methods used to reduce or prevent the detrimental effects of flood waters. Flooding can be caused by a mix of both natural processes, such as extreme weather upstream, and human changes to waterbodies and ru ...
reservoir
A reservoir (; ) is an enlarged lake behind a dam, usually built to water storage, store fresh water, often doubling for hydroelectric power generation.
Reservoirs are created by controlling a watercourse that drains an existing body of wa ...
known as Oliverian Pond before entering the town of Haverhill, where it passes through the villages of East Haverhill and Pike before reaching the Connecticut River near Haverhill village. New Hampshire Route 25 closely follows Oliverian Brook from Glencliff to NH 10 near the Connecticut River.