| East Branch Missisquoi River | |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Vermont |
| Subdivision Type3: | County |
| Subdivision Name3: | Lamoille County Orleans County, Vermont |
| Subdivision Type4: | Cities |
| Subdivision Name4: | Eden, Vermont, Lowell, Vermont |
| Source1: | Mountain Brook |
| Source1 Coordinates: | 44.7396°N -72.4493°W |
| Mouth: | Missisquoi River |
| Mouth Coordinates: | 44.8061°N -72.4593°W |
| Progression: | Missisquoi River, Lake Champlain (via Missisquoi Bay), Richelieu River, Saint Lawrence River |
| Tributaries Right: | (upstream) Truland Brook, Ace Brook. |
The East Branch of the Missisquoi River (Français: Branche Est de la rivière Missisquoi) is a tributary of the Missisquoi River, crossing the municipalities of Eden (Lamoille County) and Lowell, Vermont (Orleans County, Vermont, in the state of Vermont, in United States.
Most of the eastern branch of the Missisquoi River is accessible by route 100 (Vermont) which descends this valley; the lower part is served by route 58 (Vermont).
The surface of the East Branch of the Missisquoi River is usually frozen from mid-December to mid-March, except the rapids areas; however, safe circulation on the ice is generally from late December to early March.
The eastern branch of the Missisquoi River takes its source on the mountainside (altitude:) on the northwest side of the Lowell Mountains whose summit reaches, in the municipality of Eden. This source of the river is located at:
From its source, the eastern branch of the Missisquoi River flows over, with a drop of, according to the following segments:
The East Branch of the Missisquoi River empties into a river elbow of the south-est shore of the Missisquoi River.
The mouth of the East Branch of the Missisquoi River is located at:
The toponym "East Branch Missisquoi River" was registered on October 29, 1980 in the USGS (US Geological Survey).[2]