The New Fork River is the uppermost major tributary of the Green River

Green River (Utah)

The Green River, located in the western United States, is the chief tributary of the Colorado River. The watershed of the river, known as the Green River Basin, covers parts of Wyoming, Utah, and Colorado. The Green River is long, beginning in the Wind River Mountains of Wyoming and flowing...

 in Wyoming

Wyoming

Wyoming is a state in the mountain region of the Western United States. The western two thirds of the state is covered mostly with the mountain ranges and rangelands in the foothills of the Eastern Rocky Mountains, while the eastern third of the state is high elevation prairie known as the High...

, flowing about 70 miles (112.7 km) entirely within Sublette County. It drains an arid farming region of southwestern Wyoming south of the Wind River Range

Wind River Range

The Wind River Range , is a mountain range of the Rocky Mountains in western Wyoming in the United States. The range runs roughly NW-SE for approximately 100 miles . The Continental Divide follows the crest of the range and includes Gannett Peak, which at 13,804 feet , is the highest peak...

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Course

It rises at Lozier Lake in the Wind River Range, nearly 10000 feet (3,048 m) above sea level, in the Bridger National Forest

Bridger National Forest

Bridger National Forest was first established by the U.S. Forest Service on July 1, 1911 in Wyoming with from part of Bonneville National Forest. On May 14, 1923 Bridger was transferred Wyoming National Forest, and the name was discontinued. On March 10, 1943 Wyoming was renamed Bridger...

. Flowing southwest through a steep and narrow glacial canyon, it comes out of the mountains about 10 miles (16.1 km) north of Cora

Cora, Wyoming

-Demographics:As of the census of 2000, there were 76 people, 38 households, and 25 families residing in the CDP. The population density was 14.1 people per square mile . There were 60 housing units at an average density of 11.1/sq mi...

, briefly widening into the New Fork Lakes. From there it swings south then southeast, past Cora and on to Pinedale

Pinedale, Wyoming

Pinedale is a town in and the county seat of Sublette County, Wyoming, United States. The population was 1,412 at the 2000 census. Pinedale is an important hunting outfitting town and a gateway to the Wind River Mountains. It is also a major gateway to the Jackson Hole area in Wyoming. Pinedale is...

, receiving Willow, Pine and Pole Creeks from the left. At Boulder

Boulder, Wyoming

Boulder is a census-designated place in Sublette County, Wyoming, United States. The population was 30 at the 2000 census.-Geography:Boulder is located at ....

 it receives Boulder Creek and turns south again. The East Fork River

East Fork River

East Fork Little River is a river in the U.S. states of Alabama and Georgia. It originates near LaFayette, Georgia and discharges into the Little River near Fort Payne, Alabama....

 joins a few miles south of there. From the confluence, the New Fork meanders generally southwest between low bluffs, and joins the Green River about 6 miles (9.7 km) east of Big Piney

Big Piney, Wyoming

Big Piney is a town in Sublette County, Wyoming, United States. The population was 408 at the 2000 census.-History:Big Piney is the oldest settlement in Sublette County. It was founded in 1879, when rancher Daniel B...

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Recreation

The New Fork is considered an excellent river for inner-tube floating and canoeing because of its width and strong but not dangerous current. The river and many of its tributaries also have good fishing especially in the upper reaches. However, most of the river course is isolated and aside from the three small towns along its course (Cora, Pinedale and Boulder) there are few significant settlements of any size nearby.