The Columbia River: Pacific Northwest's Hydroelectric Artery

The **Columbia River** (2,000 km / 1,243 mi) is **North America's 4th-largest by volume** (7,500 m³/s average) and the **dominant force shaping the Pacific Northwest**—geologically, ecologically, economically, and politically.

Source to Sea: The Journey

• Source: **Columbia Lake**, British Columbia (843m elevation, Rocky Mountains)
• Canadian reach: 800 km north/northwest — **Kinbasket Lake** (Mica Dam), **Revelstoke**, **Arrow Lakes**
• Border entry: Crosses 49th parallel at **Waneta**
• US course: **Grand Coulee Dam** → **Lake Roosevelt** (240 km) → **Hanford Reach** (last free-flowing, 80 km) → **Priest Rapids, Wanapum, Rock Island, Rocky Reach, Wells Dams**
• Snake River confluence: Tri-Cities (Kennewick/Pasco/Richland) — **largest tributary**
• Columbia Gorge: 130 km through **Cascades** — **Bonneville, The Dalles, John Day Dams**
• Estuary: **Astoria, OR** — 260 km², tidal influence to **Bonneville Dam (235 km inland)**
• Mouth: **Ilwaco, WA** — **Columbia River Bar** ("Graveyard of the Pacific," 2,000+ wrecks)

The Dam Cascade: 14 Mainstem + 400+ Tributary

• Grand Coulee (1942): 6,809 MW — **largest US power station**; **Franklin D. Roosevelt Lake** (150 km)
• Chief Joseph (1958): 2,620 MW — run-of-river
• Bonneville (1938): 1,092 MW — **first federal dam**, fish ladders, navigation lock
• Total hydro capacity: **~35 GW** — **40% of US hydropower**, 60% of PNW electricity

Ecological Stakes

• Salmon/steelhead: 13 ESA-listed runs; **<2% of historic returns**; dams = primary threat
• Hanford Reach: Only free-flowing mainstem — **last wild fall Chinook stronghold
• Sturgeon, lamprey, bull trout: All impacted by fragmentation
• Treaty rights: Tribes (Yakama, Umatilla, Nez Perce, Warm Springs) — **guaranteed fishery**

Transboundary Governance

• Columbia River Treaty (1964, Canada/US): Flood control, hydropower optimization — **renegotiation underway (2024+)
• Northwest Power Act (1980): Fish/wildlife program funded by power revenues ($1B+ spent)
• BiOp (Biological Opinions): Federal dam operations vs. ESA — perpetual litigation

Economic Engine

• Navigation: 720 km inland to **Lewiston, ID** (oceangoing barges — wheat, wood, fuel)
• Irrigation: **670,000 ha** (Columbia Basin Project — Grand Coulee)
• Recreation: Wind sports (Gorge), fishing, cruises, tourism

The Columbia isn't a river anymore—it's a **plumbed system**. The question isn't "what is it?" but **"who decides its future?"** Tribes, ratepayers, salmon, cities, farms, two nations—all drawing from the same flow.