The Klamath River flows 257 miles (414 km) through Oregon and northern California in the United States, emptying into the Pacific Ocean. By average discharge, the Klamath is the second largest river in California after the Sacramento River. It drains an extensive watershed of almost 16,000 square miles (41,000 km2) that stretches from the arid country of south-central Oregon to the temperate rainforest of the Pacific coast. Unlike most rivers, the Klamath begins in the high desert and flows toward the mountains – carving its way through the rugged Cascade Range and Klamath Mountains before reaching the sea. The upper basin, today used for farming and ranching, once contained vast freshwater marshes that provided habitat for abundant wildlife, including millions of migratory birds. Most of the lower basin remains wild, with much of it designated wilderness. The watershed is known for this peculiar geography, and the Klamath has been called "a river upside down" by National Geographic magazine.
The North Santiam River is a 92-mile (148 km) tributary of the Santiam River in western Oregon in the United States. It drains 766 square miles (1,980 km2) of the Cascade Range on the eastern side of the Willamette Valley east of Salem.
Upper Klamath Lake is a large, shallow freshwater lake east of the Cascade Range in south-central Oregon in the United States. The largest body of fresh water by surface area in Oregon, it is approximately 25 miles (40 km) long and 8 miles (13 km) wide and extends northwest from the city of Klamath Falls. It sits at an average elevation of 4,140 feet (1,260 m).
The Williamson River of south-central Oregon in the United States is about 100 miles (160 km) long. It drains about 3,000 square miles (7,800 km2) east of the Cascade Range. Together with its principal tributary, the Sprague River, it provides over half the inflow to Upper Klamath Lake, the largest freshwater lake in Oregon. The lake's outlet is the Link River, which flows into Lake Ewauna and the Klamath River.
The Umatilla River is an 89-mile (143 km) tributary of the Columbia River in northern Umatilla County, Oregon, United States. Draining a basin of 2,450 square miles (6,300 km2), it enters the Columbia near the city of Umatilla in the northeastern part of the state. In downstream order, beginning at the headwaters, major tributaries of the Umatilla River are the North Fork Umatilla River and the South Fork Umatilla River, then Meacham, McKay, Birch, and Butter creeks.
Donaca Lake is a 3-acre (12,000 m2), 41-foot (12 m) deep lake in Linn County, Oregon, United States. It lies at an elevation of 2,700 feet (820 m). The lake can be accessed via two different trails, one from the south and one from the north. The lake is located within an old growth forest in the Middle Santiam Wilderness near Sweet Home.
Walling Pond is a privately owned pond that is open to the public for fishing. The pond, located in Salem, Oregon, is owned by the Walling family. The pond is located at the original site of their sand and gravel processing plant at the northeast corner of McGilchrist and 16th Streets, S.E. The pond is popular with bait anglers and produces stocked rainbow trout.
The Wood River is a short river in the southern region of the U.S. state of Oregon, and part of the Klamath Basin drainage. It flows 18 miles (29 km) through the Fremont-Winema National Forests, Bureau of Land Management land, and private property in southern Oregon. Its watershed consists of 220 square miles (570 km2) of conifer forest, rural pasture land, and marsh. The river provides habitat for many species of wildlife including an adfluvial (migratory) and resident populations of native Great Basin redband trout.
Howard Prairie Lake is a reservoir located 4,526 feet (1,380 m) above sea level in Jackson County, Oregon, United States. It is 18 miles (29 km) east of Ashland. The lake is formed by the 100-foot (30 m) tall Howard Prairie Dam, which impounds Beaver Creek, in the Klamath River watershed.
The Wenaha River is a tributary of the Grande Ronde River, about 22 miles (35 km) long, in the U.S. state of Oregon. The river begins at the confluence of its north and south forks in the Blue Mountains and flows east through the Wenaha–Tucannon Wilderness to meet the larger river at the small settlement of Troy. A designated Wild and Scenic River for its entire length, the stream flows wholly within Wallowa County.
Palmer Creek is a tributary of the Yamhill River in northwestern Oregon in the United States. Arising in Polk County it flows north, crossing almost immediately into Yamhill County. It continues generally north, entering the larger stream at Dayton, 5 miles (8 km) upstream of the Yamhill's confluence with the Willamette River.
The Trout Creek Mountains are a remote, semi-arid Great Basin mountain range mostly in southeastern Oregon and partially in northern Nevada in the United States. The range's highest point is Orevada View Benchmark, 8,506 feet (2,593 m) above sea level, in Nevada. Disaster Peak, elevation 7,781 feet (2,372 m), is another prominent summit in the Nevada portion of the mountains.
Fish Lake is a reservoir located 4,639 feet (1,414 m) above sea level in Jackson County, Oregon, United States. It is 35 miles (56 km) northeast of Medford. Originally a natural lake, it was enlarged by the 50-foot (15 m) tall Fish Lake Dam, which impounds the north fork of Little Butte Creek, in the Rogue River watershed.
Fourmile Lake is a reservoir located 5,748 feet (1,752 m) above sea level in Klamath County, Oregon, United States. It is 45 miles (72 km) northeast of Medford. The lake was created when the 25-foot (7.6 m) tall Fourmile Lake Dam was constructed, impounding Fourmile Creek, in the Klamath River watershed. It is located just to the east of Mount McLoughlin, which stands 9,495 feet (2,894 m) above sea level. The lake is bordered by Sky Lakes Wilderness, and is in the Winema National Forest.
Aspen Lake is a swampy lake in the Southern Cascade Range, just west of Klamath Falls, Oregon, United States. It is about 5.5 by 3 miles in area and located at 4,314 ft (1,315 m) in altitude off Aspen Rd, 56.8 mi (91 km) from the junction of Oregon Route 140 with Oregon Route 62 at White City, Oregon.
The Williams River is a tributary, about 21 miles (34 km) long, of the South Fork Coos River in the U.S. state of Oregon. Formed by the confluence of Lost Creek and Little Cow Creek, it begins in western Douglas County near the Coos County line and flows generally northwest through the Southern Oregon Coast Range. In eastern Coos County, it joins Tioga Creek to form the South Fork Coos River about 32 miles (51 km) from its confluence with the Millicoma River.
Lake of the Woods is a natural lake near the crest of the Cascade Range in the Fremont–Winema National Forest in southern Oregon in the United States. The lake covers 1,146 acres (4.64 km2). It was named by Oliver C. Applegate in 1870. Today, the Oregon Department of Fish and Wildlife manages the lake's fishery. The small unincorporated community of Lake of the Woods is located on the east shore of the lake. Lake of the Woods is one of southern Oregon's most popular outdoor recreation sites.
Woahink Lake extends further below sea level than any other lake dammed by sand dunes along the coast of the U.S. state of Oregon. The lake fills a depression in the Siltcoos River watershed about 3 miles (5 km) from the Pacific Ocean south of Florence along U.S. Route 101. The lowest point of the lake, which is up to 74 feet (23 m) deep, is about 36 feet (11 m) below sea level. The lake drains south to Siltcoos Lake via Woahink Creek. The lake's name may derive from the Siuslaw language.
The Rosary Lakes are a group of three lakes in Klamath County, Oregon, in the United States. All three lakes are within the Deschutes National Forest.
Wood River Wetland is a marsh wetland and freshwater ecoregion in the heart of Klamath County in Southern Oregon. The wetland neighbors the north shore of Agency Lake and is the focus of a Bureau of Land Management river channel restoration project from agricultural land.
