The Black River is a tributary of Lake Memphremagog, over 30 miles (48 km) long, in northern Vermont in the United States.

It is paralleled much of the way by Vermont Route 14, taking advantage of the terrain of the Black River Valley.

The Black River is 26 miles (42 km) in length, originates east of Great Hosmer Pond with headwater tributaries flowing west off Ames Hill in Albany.

The drop from the source to Lake Memphremagog, including the falls at Irasburg and Coventry, is 190 feet (58 m).

[2] The Black River, after beginning on the east side of Great Hosmer Pond in the southern portion of the town of Albany.

[2] It continues in a generally southerly flow into the town of Craftsbury entering a wider valley east of Duck Pond.

The river twists and turns its way north through a broad valley, which contains many significant floodplain and wetland communities (see section below).

Within 1 mile (1.6 km) it turns south, then curves around to the west, then heads northwest to join its western branch.

The Black River flows through the central part of the town from south to north, having a number of quite considerable tributaries.

Downstream of Irasburg, the Black River continues north in a narrower valley with less meandering.

The Black River follows an east-northeasterly course through the central part of Coventry, until it joins the South Bay of Lake Memphremagog in Newport.

For about the last 4.7 miles (7.6 km), the river is part of the state's South Bay Wildlife Management Area.

From there the river proceeds north to enter Lake Memphremagog from the west side of the South Bay.

The river enters Lake Memphremagog in the extreme eastern part of the town, near the village, in the South Bay