California River Map

About California River Map

Explore map of California with rivers and lakes, geographical / physical features clearly marked on map.

List of Major Rivers in California

River Name	Length in California (mi)	Total Length (mi)	Source / Headwaters	Mouth / Outfall	Major Tributaries	Counties Drained	Drainage Basin Area (sq mi)	Average Discharge (cfs)	Key Reservoirs / Dams	Primary Uses & Notes
Klamath River	263	263	Upper Klamath Lake, Oregon	Pacific Ocean (near Klamath, Del Norte County)	Trinity River, Scott River, Shasta River	Siskiyou, Humboldt, Trinity, Del Norte	15,719	≈ 17,000	Iron Gate Dam, Copco 1 & 2, J.C. Boyle	Major salmon fishery; dam removal ongoing (2023–2026)
Trinity River	165	165	Scott Mountains, Trinity County	Junction with Klamath River	South Fork Trinity, North Fork Trinity	Trinity, Humboldt	2,950	≈ 4,000–6,000	Trinity Dam, Lewiston Dam	Important wild salmon & steelhead fishery
Eel River	196	196	Mendocino County	Pacific Ocean (near Fortuna)	South Fork Eel, Middle Fork Eel, North Fork Eel, Van Duzen	Mendocino, Humboldt, Trinity	3,684	≈ 8,000–12,000	Scott Dam (Lake Pillsbury)	Third largest river entirely in California; wild steelhead
Russian River	110	110	Northern Sonoma County	Pacific Ocean (Jenner)	Mark West Creek, Dry Creek	Sonoma, Mendocino	1,485	≈ 1,500–3,000	Coyote Dam (Lake Mendocino)	Popular recreation river; salmon & steelhead
Sacramento River	445	445	Klamath Mountains, Siskiyou County	San Francisco Bay (via Sacramento–San Joaquin Delta)	Feather River, American River, Yuba River, Clear Creek	Siskiyou, Shasta, Tehama, Butte, Glenn, Colusa, Yolo, Sacramento, Solano	27,000	≈ 35,000 (at mouth)	Shasta Lake, Lake Oroville (via Feather), Folsom Lake	Largest river entirely in California; major water supply
Feather River	219	219	Plumas National Forest	Sacramento River	Yuba River, North Fork Feather	Plumas, Butte, Yuba, Sutter	6,200	≈ 8,000–12,000	Lake Oroville (largest reservoir in California)	Major water supply & flood control
American River	120	120	Sierra Nevada (near Echo Summit)	Sacramento River	South Fork, Middle Fork, North Fork	El Dorado, Placer, Sacramento	1,900	≈ 3,500–6,000	Folsom Lake, Folsom Dam	Gold Rush history; popular rafting river
San Joaquin River	366	366	Sierra Nevada (near Mono Pass)	San Francisco Bay (via Delta)	Merced, Tuolumne, Stanislaus, Fresno River	Madera, Fresno, Merced, Stanislaus, San Joaquin	15,880	≈ 4,000–10,000	Millerton Lake, Friant Dam	Major Central Valley water supply
Kings River	132	132	Sierra Nevada (Kings Canyon)	San Joaquin River	South Fork Kings, Middle Fork Kings	Fresno, Kings	1,400	≈ 4,000	Pine Flat Reservoir, Pine Flat Dam	Important irrigation river
Kern River	164	164	Sierra Nevada (near Mount Whitney)	San Joaquin Valley (disappears into ground)	South Fork Kern, North Fork Kern	Kern, Tulare	2,400	≈ 1,000–3,000	Lake Isabella, Isabella Dam	Popular whitewater rafting river
Salinas River	175	175	Los Padres National Forest	Pacific Ocean (Monterey Bay)	Nacimiento River, San Antonio River	Monterey, San Luis Obispo	4,700	≈ 500–2,000	San Antonio Reservoir, Nacimiento Reservoir	Largest river system on Central Coast
Santa Ana River	154	154	San Bernardino Mountains	Pacific Ocean (Huntington Beach)	Santa Ana River (main stem)	San Bernardino, Riverside, Orange	1,700	≈ 1,000	Prado Dam, Seven Oaks Dam	Most urbanized major river in Southern California
Santa Clara River	≈ 125	125	Sierra Pelona Mountains	Pacific Ocean (Ventura County)	Piru Creek, Sespe Creek	Los Angeles, Ventura	1,200	≈ 500–1,500	Piru Lake, Pyramid Lake	Important steelhead trout habitat

Major Rivers of California

What defines California isn’t obvious at first glance. Its winding streams run deeper than in most states across the U.S. Cold water spills from the high peaks of the Sierra range straight into the heart of the land. These flows carve valleys while feeding farms under clear skies. People live close by, relying on fish, power, and transport tied directly to river movement. Along every stretch, nature finds balance - thanks to steady force behind concrete walls and old-style ditches. Rain falls infrequently but hard during one season only; dry spells follow without warning later. Management on a massive scale keeps everything running within tight limits. Water from these rivers flows into urban centers, feeding both residents and vast agricultural regions. Powering hydro stations, they also sustain major fishing industries alongside opportunities for outdoor activities across diverse populations annually.

The Sacramento River System – Northern California’s Lifeline

Starting high near Mount Shasta, the Sacramento River stands as California's longest inside its borders - stretching about 445 miles southward toward the delta. Water gathers from a huge area, close to 27,000 square miles, feeding what moves through the channel each second: roughly three dozen thousand cubic feet every few beats near where it meets the sea. Fed by key streams like the Feather, American, Yuba, and Pit, each one adds volume along the way. Water from the Sacramento River flows to vast populations across Northern California, including cities near the bay, while feeding farms stretching under canopy skies. Farms drink deep where streams split off from the main channel, carrying life beyond urban growth. Salmon return each year under ancient patterns, their paths marked by season and place, not just by law or science. Steelhead appear in ripples that trace mountain edges, living through winter without shelter or warning. Shasta Lake sits behind a dam built decades ago, holding more volume than any below its name, feeding power plants when rain pauses overseas. This system links state agencies, fish migrations, agricultural routines, and hydroelectric needs within quiet yet urgent balance.

The San Joaquin River System – The Southern Counterpart

From the High Sierra, the San Joaquin River runs 366 miles downward into Central Valley before meeting the Sacramento River in the Delta. Water flows through nearly 15,880 square miles - shaped largely by human changes made for farming, managing floods, and delivering urban needs. Along its path, several streams join: the Merced, Tuolumne, Stanislaus, and Fresno feed its course. Down the line, key storage spots hold water - Millerton Lake comes from Friant Dam, while Pine Flat Reservoir sits nearby. Farming around the San Joaquin Valley relies heavily on the San Joaquin River, feeding much of the country’s output in produce, milk, tree crops, and harvested greens. Still, years of siphoning off flow took a heavy toll on fish that lived there before, which now drives broad recovery work across the region.

Coastal Rivers – From the North Coast to Southern California

Down near the ocean, rivers like the Klamath, Trinity, and Eel run long and wild, feeding huge runs of salmon and steelhead. Farther south, up in Sonoma and Mendocino, people swim and float on the Russian River all summer. Inland on the Central Coast, the Salinas River stretches over two hundred miles, shaping much of the land between San Francisco and Los Angeles. Down in SoCal, the Santa Ana River and Santa Clara River sit amidst dense urban areas - yet they offer space, shelter, and protection from floods. Even surrounded by development, they help feed local water needs, support outdoor activities, and keep wildlife thriving where cities dominate.

The Colorado River in California

Even though little of the Colorado River reaches California, its role cannot be ignored. Water from the river moves through the Colorado River Aqueduct to serve millions in Southern California. Farms in the Imperial Valley depend on it for growing crops on a massive scale - this area stands among the world's most fertile. Lakes along the river draw visitors who enjoy swimming, boating, and outdoor activities. Talks about how much water each state should receive still drag on, especially between California and the other six Basin states.

Current Challenges and Management

By 2026, California's rivers struggle under long droughts, shifting weather patterns, old water systems, fewer salmon each year, dirtying waters, along with rising pressures from cities, farms, and nature seeking supply. Billions have been spent since enacting the Sustainable Groundwater Management Act, tearing down dams - most notably along the Klamath - rebuilding habitats, upgrading how water moves across the state. Still, finding room for everything at once keeps state leaders deeply involved.