| North Fork Trinity River | |
|---|---|
 | |
| Location | |
| Country | United States |
| State | California |
| City | Helena |
| Physical characteristics | |
| Source | Rays Peak and Chikoot Pass |
| • location | Trinity National Forest |
| • coordinates | 41°04′24″N 123°09′54″W / 41.07333°N 123.16500°W |
| • elevation | 5,700 ft (1,700 m) |
| Mouth | Trinity River |
• location | Helena |
• coordinates | 40°46′14″N 123°07′39″W / 40.77056°N 123.12750°W |
• elevation | 1,358 ft (414 m) |
| Length | 25 mi (40 km) |
| Basin size | 151 sq mi (390 km2) |
| Discharge | |
| • location | Helena, CA |
| • average | 431 cu ft/s (12.2 m3/s) |
| • minimum | 7.5 cu ft/s (0.21 m3/s) |
| • maximum | 35,800 cu ft/s (1,010 m3/s) |
| Basin features | |
| Tributaries | |
| • left | Grizzly Creek, East Fork North Fork Trinity River |
| Designated | January 19, 1981 |
The North Fork Trinity River is a tributary of the Trinity River in the U.S. state of California. It flows south through the Klamath Mountains for about 25 miles (40 km), emptying into the Trinity at Helena, about 5 miles (8.0 km) northeast of Junction City. The river drains an area of 151 square miles (390 km2). Important tributaries include the East Fork North Fork Trinity River and Grizzly Creek.