Yakima River

About

Yakima River, Washington — 1805-1806 Lewis and Clark, 1905-1910 Yakima Project, 2009 Integrated Plan. The land sets the terms. The city of Yakima and Yakima Sportsman State Park sit between Yakima Ridge to the north and the Rattlesnake Hills to the south, both part of the Yakima Fold Belt — the long basalt corrugations that channel the river through its canyon. Paddlers on the 23-mile stretch move through two named sections, The Farmlands and the Lower Yakima Canyon, on water that runs Class I–II. USGS gauge 12484500 reports a long-term average near 2,425 cubic feet per second, with an optimal paddling window between 1,200 and 3,650 CFS.

Long before the surveyors arrived, the Yakima was ancestral homeland of the Yakama and Wanapum peoples, a key tributary of the Columbia. The 1855 Treaty of Yakama saw the Yakama cede 11.5 million acres while reserving fishing, hunting, and gathering rights, and the 1855–1858 Yakama War followed as the Yakama resisted US military occupation. These remain the most-cited cultural touchstones of the watershed.

The written record of study begins with the 1869 Yakima River Survey, led by Washington Territory Engineer T.S. Edson — the first comprehensive hydrological study of the basin. In the decades that followed, the watershed was heavily logged, from the 1860s through the 1930s, feeding the 1870–1910 Yakima County sawmill industry, the North Yakima and Ellensburg mills, and the timber demands of the Northern Pacific Railway expansion. The exhaustion of the ponderosa pine and Douglas-fir stands around 1910, the start of forestry conservation in 1920, and the 1934 creation of the Wenatchee National Forest brought the large-scale logging era to a close.

Water engineering reshaped the river's hydrology. The 1905–1910 Yakima Project was the Bureau of Reclamation's first major project in Washington, threading dams and canals across the basin, and the 1911 Roza Dam followed. But the river can still turn violent: on December 23, 1933, the valley endured its largest recorded flood, damaging or destroying every transportation route along with many homes and businesses. In answer, the Army Corps of Engineers raised 25,000 feet of levee on the west bank and 10,700 feet on the east between Selah and Union Gaps by March 1948 — defenses that still shape the river's course.

Today the Yakima balances agriculture and recovery. The river supports the Yakima and Ellensburg economies and a roughly $3 billion agricultural economy, while the Yakima Basin Integrated Plan — which reached consensus on a final proposal in December 2010 — guides its long-term management. In 2024, the Yakima River Restoration Program, a joint effort of the Yakama Nation, the Washington Department of Ecology, and the Bureau of Reclamation, removed 8 fish-passage barriers and restored 28 miles of riparian buffer. The 2018–2024 recovery work showed a 178% increase in native sockeye salmon (Oncorhynchus nerka). Recreation has grown alongside restoration: 2024 paddling logged 22,500 user-days, a 27% increase from 2018. The paddled corridor falls under Bureau of Land Management stewardship.