Humptulips River

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Humptulips River
Mouth of the Humptulips River at Grays Harbor
Mouth of the Humptulips River in Washington
Location
Country	United States
State	Washington
Physical characteristics
Source	Olympic Mountains
Mouth	Pacific Ocean
• location	Copalis Crossing
• coordinates	47°2′28″N 124°3′16″W / 47.04111°N 124.05444°W / 47.04111; -124.05444
Length	50 mi (80 km)[1]
Basin size	276 sq mi (710 km2)
Discharge
• average	1,344 cu ft/s (38.1 m3/s)
• minimum	82 cu ft/s (2.3 m3/s)
• maximum	37,500 cu ft/s (1,060 m3/s)

The Humptulips River is a river in Grays Harbor County, Washington, in the United States. Its main tributaries are the East Fork Humptulips River, about 20 miles (32 km) long (32 km), and West Fork Humptulips River, about 30 miles (48 km) long (48 km). After the forks join, the main river is approximately 20 miles (32 km) long.

The Humptulips has a drainage basin of 276 square miles (710 km²). The river's average discharge is 1,344 cu ft/s (38.1 m³/s), with a maximum recorded discharge of 37,500 cu ft/s (1,060 m³/s), in November, 2006, and a minimum of 82 cu ft/s (2.3 m³/s), in September, 1944.

Variant names, according to the United States Geological Survey (USGS), include Hum-tu-lups, Humptolups, Humtutup, and Um-ta-lah. The name comes from the Humptulips Indians, part of the Chehalis tribe. Some sources say the word "humptulips" means "hard to pole" while others say it means "chilly region".^[2]