The Cowlitz River is a river in the state of Washington in the United States, a tributary of the Columbia River. Its headwaters can be found on Mt. Rainier. Image File history File links No higher resolution available. ... Río Peralonso - El Zulia (Norte de Santander), Colombia River Gambia flowing through Niokolokoba National Park Nevėžis River in Lithuania A river is a natural waterway usually formed by water derived from either precipitation or glacial meltwater, and flows from higher ground to lower ground. ... “Washington State” redirects here. ... The Columbia River (French: fleuve Columbia) is a river situated in British Columbia and the Pacific Northwest of the United States. ... Mount Rainier is a stratovolcano (and national park) located 54 miles (87 km) southeast of Seattle, Washington in Pierce County. ...

The Cowlitz has a 2,480 sq mi (4,017.6 km²) drainage basin, located between the Cascade Range in eastern Lewis County, Washington and the cities of Kelso and Longview. The river is roughly 105 miles (170 km) in total length, not counting tributaries. Mount Adams in Washington The Cascade Range is a mountainous region famous for its chain of tall volcanoes called the High Cascades that run north-south along the west coast of North America from British Columbia through Washington and Oregon to the Shasta Cascade area of northern California. ... Lewis County is a county located in the state of Washington. ... Kelso is a city in Cowlitz County, Washington, United States. ... Longview is a city in Cowlitz County, Washington, United States. ...

Major tributaries of the Cowlitz River include the Toutle River, which was overtaken by volcanic mudflows (lahars) during the May 1980 eruption of Mount St. Helens (see 1980 Mount St. Helens eruption). The Toutle River is a river in southwest Washington State, in the Pacific Northwest region of the United States. ... Lahar from a March 1982 eruption of Mount St. ... 1980 (MCMLXXX) was a leap year starting on Tuesday. ... For the mountain in California see Mount Saint Helena. Mount St. ... (Redirected from 1980 Mount St. ...

Dams

The Cowlitz River currently has 3 major hydroelectric dams, with several small-scale hydropower and sediment retention structures within the Cowlitz Basin. Hydraulic turbine and electrical generator. ... Hydraulic turbine and electrical generator. ...

The Cowlitz Falls Project is a 70 megawatt hydroelectric dam that was constructed in the early 1990’s and completed in 1994. The dam is 140 feet high and 700 feet wide. The Cowlitz Falls Project produces on average 260 gigawatthours annually for Lewis County PUD. Its reservoir, Lake Scanewa, is located at the confluence of the Cowlitz and Cispus Rivers downstream of Randle. The megawatt (symbol: MW) is a unit for measuring power corresponding to one million (106) watts. ... Hydraulic turbine and electrical generator. ... Randle, Washington is a town located in extreme eastern Lewis County, Washington. ...

Mossyrock Dam began generating power for Tacoma City Light in 1968. It rises 605 feet from bedrock and created 23-mile long Riffe Lake (previously Davisson Reservoir). It is the highest dam in the Pacific Northwest. The dam is named for the nearby city of Mossyrock, the lake for the town of Riffe, which, along with Kosmos, was destroyed by the flooding of the Cowlitz River valley above the dam. Mossyrock is a city located in Lewis County, Washington. ...

The Mayfield Dam is 850 feet long and 185 feet high. An 860-foot tunnel connects the reservoir to the powerhouse. The dam began producing electricity in 1963. Mayfield Lake offers many recreational opportunities due to the presence of several county and state parks and its location below the Mossyrock Dam. The modulated inflow from the Mossyrock Dam allows Mayfield Lake to maintain a water level that rarely fluctuates more than a few feet. It is located several miles downstream of Mossyrock. Mossyrock is a city located in Lewis County, Washington. ...

Packwood lake was dammed in 1964 by the Washington Public Power Supply System (now called Energy Northwest). The dam has taken over the job of holding back the lake from an ancient landslide and redirects streamflow to a 27 megawatt hydroelectric generator in the Cowlitz River valley floor 2000 feet (300 meters) below just outside the town of Packwood. Great care was used when designing and building the dam so as not to affect the abundant wildlife that calls the lake and surrounding area home - the dam raising the water level by only a few feet. The megawatt (symbol: MW) is a unit for measuring power corresponding to one million (106) watts. ... Packwood, Washington is a small town located in easternmost Lewis County, Washington. ... Various species of deer are commonly seen wildlife across the Americas and Eurasia. ...

The sediment retention structure on the North Fork of the Toutle River. The dam is approximately 22 miles upriver from the confluence of the Toutle and the Cowlitz.

A serious side effect of the Mount St. Helens 1980 eruption has been the downstream movement of enormous amounts of sediment through the North Fork Toutle River. After the eruption, river borne sediment increased over five thousand-fold, making the Toutle River one of the most sediment-laden rivers in the world. The Toutle River Sediment Retention Structure was constructed to trap this sediment before it was carried farther downstream, where it could clog the river channel, exacerbate floods along the lower Toutle and Cowlitz Rivers, and destroy the Columbia River shipping channel, which still requires periodic dredging. An overflow channel has been added to divert lahars around the dam. Image File history File links Size of this preview: 800 × 549 pixel Image in higher resolution (1500 × 1030 pixel, file size: 649 KB, MIME type: image/jpeg) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Cowlitz River Toutle... Image File history File links Size of this preview: 800 × 549 pixel Image in higher resolution (1500 × 1030 pixel, file size: 649 KB, MIME type: image/jpeg) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Cowlitz River Toutle... For the mountain in California see Mount Saint Helena. Mount St. ... (Redirected from 1980 Mount St. ... The Toutle River is a river in southwest Washington State, in the Pacific Northwest region of the United States. ... The Sediment Retention Structure is a 1800 foot long, 184 foot high earthen dam on the Toutle River in Washington. ... The Columbia River (French: fleuve Columbia) is a river situated in British Columbia and the Pacific Northwest of the United States. ... Lahar from a March 1982 eruption of Mount St. ...

Bridges

The Cowlitz is spanned by several bridges along its length.

Just upstream from its mouth at the Columbia river, a railroad bridge connecting the Port of Longview to the BNSF rail line crosses the Cowlitz, with a road bridge for SR 432 (Tennant Way) beside. The BNSF Railway (AAR reporting mark BNSF), headquartered in Fort Worth, Texas, is one of the largest railroad networks in North America (only its competitor, the Union Pacific Railroad, is comparable in size). ...

Further upstream are the Allen St. and Cowlitz Way bridges, connecting West Kelso with the rest of Kelso. Just north of Kelso, a railroad bridge provides crossing for the Columbia & Cowlitz Railroad. Kelso is a city in Cowlitz County, Washington, United States. ... The Columbia and Cowlitz Railway(FRA Reporting Mark:CLC), headquartered in Longview,WA, serves a 8. ...

At Castle Rock, the A St. bridge provides access from downtown to the school and residential areas across the river. A few miles north, after the Toutle River split, the BNSF line crosses the river. Castle Rock is a city located in Cowlitz County, Washington. ... The Toutle River is a river in southwest Washington State, in the Pacific Northwest region of the United States. ... The BNSF Railway (AAR reporting mark BNSF), headquartered in Fort Worth, Texas, is one of the largest railroad networks in North America (only its competitor, the Union Pacific Railroad, is comparable in size). ...

Across the Lewis/Cowlitz County line, between the towns of Vader and Toledo, Washington, I-5 crosses the river. At Toledo, SR-505 (called the Jackson Highway) crosses. Lewis County is a county located in the state of Washington. ... Cowlitz County is a county located in the state of Washington. ... Vader is a city located in Lewis County, Washington. ... Toledo is a city in Lewis County, Washington, United States. ... Interstate 5 (abbreviated I-5) is the westernmost interstate highway in the continental United States. ... Toledo is a city in Lewis County, Washington, United States. ...

Where Highway 12 crosses Mayfield Lake, just west of Mossyrock, causeways were built out to the middle of the lake, where a short bridge section connects the two sides. A small bridge provides a crossing for SR 122 at the head of Mayfield Lake. Just east of Mossyrock, the Cowlitz River Bridge on Highway 12 was the largest concrete arch bridge in North America until 1971 at 550 feet. U.S. Route 12, or US 12, is an east-west United States highway running from downtown Detroit almost 2500 miles (4000 km) to Grays Harbor on the Pacific Ocean in the northwest corner of the state of Washington. ... Mossyrock is a city located in Lewis County, Washington. ... Mossyrock is a city located in Lewis County, Washington. ... U.S. Route 12, or US 12, is an east-west United States highway running from downtown Detroit almost 2500 miles (4000 km) to Grays Harbor on the Pacific Ocean in the northwest corner of the state of Washington. ...

At the head of Riffe Lake, the 27 Road provides access to the forestland south of the Cowlitz from Morton and Glenoma to the north. Morton is a city located in Lewis County, Washington. ... Glenoma is a mid-small town in Lewis County, Washington. ...

At Randle, SR 131 crosses the Cowlitz to provide access to the Cispus basin and the northern areas of the Mt. St. Helens Monument. East of Randle, at Cora, Highway 12 again crosses the Cowlitz. Randle, Washington is a town located in extreme eastern Lewis County, Washington. ... Mount St. ... Randle, Washington is a town located in extreme eastern Lewis County, Washington. ... U.S. Route 12, or US 12, is an east-west United States highway running from downtown Detroit almost 2500 miles (4000 km) to Grays Harbor on the Pacific Ocean in the northwest corner of the state of Washington. ...

In the Big Bottom Valley between Randle and Packwood, Highway 12 crosses the Cowlitz. Randle, Washington is a town located in extreme eastern Lewis County, Washington. ... Packwood, Washington is a small town located in easternmost Lewis County, Washington. ... U.S. Route 12, or US 12, is an east-west United States highway running from downtown Detroit almost 2500 miles (4000 km) to Grays Harbor on the Pacific Ocean in the northwest corner of the state of Washington. ...

At Packwood, Skate Creek Road spans the river, providing access to the Gifford Pinchot National Forest and Tatoosh Wilderness, as well as connecting the downtown and residential areas of Packwood. Packwood, Washington is a small town located in easternmost Lewis County, Washington. ... Gifford Pinchot National Forest is a national forest located in southwestern Washington. ... Located in Washington State, the 15,750 acres of Tatoosh Wilderness is managed by the U.S. Forest Service. ... Packwood, Washington is a small town located in easternmost Lewis County, Washington. ...

Upstream from Packwood, the Cowlitz splits into the Muddy and Clear Forks, with several Forest Service and Park Service roads crossing each. Packwood, Washington is a small town located in easternmost Lewis County, Washington. ...

Other River Structures

When the Cowlitz Salmon Hatchery began operation in 1968, it was the largest salmon hatchery in the world. Currently, it produces nearly 13 million fish each year. Adjacent to the salmon hatchery is the barrier dam, which diverts spawning and upriver migrating fish to a separating station where fish are sorted by species. Some of the fish are used by the hatchery while others are transported upstream to continue migration.

The Bonneville Power Administration, in cooperation with the Lewis County PUD, state and federal agencies and Tacoma Power, constructed a downstream anadromous fish collection facility as part of the Cowlitz Falls Project. The fish facility, along with the Cowlitz River Salmon Hatchery's diversion dam below Mayfield Lake, has permitted the reintroduction of salmon and steelhead in the upper Cowlitz River basin for the first time since the construction of the Mossyrock and Mayfield Dams in the 1960’s. The Bonneville Power Administration (BPA) is a US self-financed federal agency headquartered in Portland, Oregon which transmits and sells wholesale electricity to Washington, Oregon, Idaho and western Montana. ...

Recreational Opportunities

These two hatcheries provide an exceptional sportfishing opportunity for recreational anglers in Washington and Oregon. The Cowlitz river consistently ranks as one of the states top ten steelhead and salmon producers.

Steelhead and Salmon Fishing Trips can be arranged through several local fishing guides Cowlitz River Fishing Guides, Eli Rico Washington Steelhead Fishing Guide Service,/Cowlitz River Fishing Guides Serviceand Washington Salmon Fishing Guide Service

External links

• USGS Cowlitz River Basin map
• Cowlitz Falls Project
• Tacoma City Light's Cowlitz River Project
• http://www.energy-northwest.com/generation/packwood
• The Army Corps of Engineers' Mt. St. Helens Sediment Retention Structure