Dell Creek is a warm freshwater stream that lies in northeastern Sauk County and southern Juneau County in central Wisconsin. [1] Dell Creek was named from the dells which occur along its course. [2] Dell Creek is a warm water sport fishery for the lower 1.5 miles and a Class II [3] trout stream for the upper 10.5 miles of its length. The creek is classified as an exceptional resource water. Much of Dell Creek's length in Sauk County is publicly owned.
The main problems on the creek are sediment and nutrient loading from agricultural sources and a lack of in-stream habitat. Surveys conducted in 1995 found low numbers of trout and determined the water quality to be from fair to poor in some locations. This indicates that the stream has experienced some severe environmental damage. It is thought that the limited habitat is one of the limiting factors for aquatic life.
There are also two large impoundments on Dell Creek. One creates Lake Delton and the other creates Mirror Lake. Silt and sediment from farm fields are thought to be a problem in the stream and are causing a sediment problem in the upper end of Mirror Lake. Suspected high nutrient inputs to Mirror Lake from Dell Creek are thought to be fueling the excessive aquatic plant and algae growth in the lake. [4]
Lake Delton is a village located on the Wisconsin River in Sauk County, Wisconsin, United States. The population was 3,501 at the 2020 census. Lake Delton, along with the nearby Wisconsin Dells, is a resort area and a center for tourism in the upper Midwest. Lake Delton is included in the Baraboo Micropolitan Area which comprises part of the larger Madison Combined Statistical Area.
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 Driftless Area, also known as Bluff Country and the Paleozoic Plateau, is a topographical and cultural region in the Midwestern United States that comprises southwestern Wisconsin, southeastern Minnesota, northeastern Iowa, and the extreme northwestern corner of Illinois. The Driftless Area is a USDA Level III Ecoregion: Ecoregion 52. The Driftless Area takes up a large portion of the Upper Midwest forest–savanna transition. The eastern section of the Driftless Area in Minnesota is called the Blufflands, due to the steep bluffs and cliffs around the river valleys. The western half is known as the Rochester Plateau, which is flatter than the Blufflands. The Coulee Region is the southwestern part of the Driftless Area in Wisconsin. It is named for its numerous ravines.
The Rush River is a 49.8-mile-long (80.1 km) tributary of the Mississippi River in western Wisconsin in the United States. It rises just north of Interstate 94 in St. Croix County near Baldwin and flows generally southwardly through Pierce County. It ends in Lake Pepin of the Mississippi River, about 1 mile (2 km) west of the village of Maiden Rock in Pierce County. The largest tributary is Lost Creek.
Stevens Creek is a 20.9-mile-long (33.6 km) stream in Santa Clara County, California. The creek originates in the Santa Cruz Mountains on the western flank of Black Mountain in the Monte Bello Open Space Preserve near the terminus of Page Mill Road at Skyline Boulevard. It flows southeasterly through the Stevens Creek County Park before turning northeast into Stevens Creek Reservoir. It then continues north for 12.5 miles (20.1 km) through Cupertino, Los Altos, Sunnyvale and Mountain View before emptying into the San Francisco Bay at the Whisman Slough, near Google's main campus.
Malibu Creek is a year-round stream in western Los Angeles County, California. It drains the southern Conejo Valley and Simi Hills, flowing south through the Santa Monica Mountains, and enters Santa Monica Bay in Malibu. The Malibu Creek watershed drains 109 square miles (280 km2) and its tributary creeks reach as high as 3,000 feet (910 m) into Ventura County. The creek's mainstem begins south of Westlake Village at the confluence of Triunfo Creek and Lobo Canyon Creek, and flows 13.4 miles (21.6 km) to Malibu Lagoon.
Green Lake — also known as Big Green Lake — is a lake in Green Lake County, Wisconsin, United States. Green Lake has a maximum depth of 237 ft (72 m), making it the deepest natural inland lake in Wisconsin and the second largest by volume. The lake covers 29.72 km2 and has an average depth of 30.48 m (100.0 ft). Green Lake has 43.94 km (27.30 mi) of diverse shoreline, ranging from sandstone bluffs to marshes.
Arroyo Corte Madera del Presidio is a 4.1-mile-long (6.6 km) year-round stream in southern Marin County, California, United States. This watercourse is also known as Corte Madera Creek, although the actual stream of that name flows into San Francisco Bay further north at Point San Quentin. This watercourse has a catchment basin of about 8 square miles (21 km2) and drains the south-eastern slopes of Mount Tamalpais and much of the area in and around the town of Mill Valley; this stream discharges to Richardson Bay.
Mirror Lake State Park is a 2,179-acre (882 ha) Wisconsin state park in the Wisconsin Dells region. The process of establishing the park began in 1962 and the park officially opened on August 19, 1966. It contains Mirror Lake, a narrow reservoir with steep sandstone sides up to 50 feet (15 m) tall. The lake has a surface area of 137 acres (55 ha) and an average depth of 10 to 14 feet. Recessed out of the wind, the water of Mirror Lake is usually calm and often as glassy-smooth as a mirror, hence the name. Situated in a major tourist area, the state park has an extensive campground and other visitor amenities. Also located within the park is the Seth Peterson Cottage, a Frank Lloyd Wright-designed building available for public rental.
Siltcoos Lake (silt’-koos), at 3,164 acres (1,280 ha), is the largest lake on the Oregon Coast of the United States. Fed by runoff from a basin of about 68 square miles (180 km2) in Douglas and Lane counties, it is about 7 miles (11 km) south of Florence and 0.5 miles (1 km) east of U.S. Route 101. Its name comes from a Lower Umpqua (Siuslaw) placename, a variant of which is Tsiltcoos.
The Suiattle River is a river in the northern Cascade Mountains of western Washington, a tributary of the Sauk River and by extension the Skagit River. Its source is located between Suiattle Glacier and Honeycomb Glacier on Glacier Peak, at an elevation of around 7,000 ft (2,100 m) above sea level. It descends through a 60 miles (97 km) course, lying mainly within the Mount Baker-Snoqualmie National Forest. It meets the Sauk northeast of Darrington, Washington at an elevation of 400 ft (120 m). Snowmelt from Chocolate and Dusty Glacier gives the river silty water, with a suspended load over twice that of the upper Sauk or adjacent White Chuck.
Dam removal is the process of demolishing a dam, returning water flow to the river. Arguments for dam removal consider whether their negative effects outweigh their benefits. The benefits of dams include hydropower production, flood control, irrigation, and navigation. Negative effects of dams include environmental degradation, such as reduced primary productivity, loss of biodiversity, and declines in native species; some negative effects worsen as dams age, like structural weakness, reduced safety, sediment accumulation, and high maintenance expense. The rate of dam removals in the United States has increased over time, in part driven by dam age. As of 1996, 5,000 large dams around the world were more than 50 years old. In 2020, 85% percent of dams in the United States are more than 50 years old. In the United States roughly 900 dams were removed between 1990 and 2015, and by 2015, the rate was 50 to 60 per year. France and Canada have also completed significant removal projects. Japan's first removal, of the Arase Dam on the Kuma River, began in 2012 and was completed in 2017. A number of major dam removal projects have been motivated by environmental goals, particularly restoration of river habitat, native fish, and unique geomorphological features. For example, fish restoration motivated the Elwha Ecosystem Restoration and the dam removal on the river Allier, while recovery of both native fish and of travertine deposition motivated the restoration of Fossil Creek.
Permanente Creek is a 13.3-mile-long (21.4 km) stream originating on Black Mountain in Santa Clara County, California, United States. Named by early Spanish explorers as Arroyo Permanente or Río Permanente because of its perennial flow, the creek descends the east flank of Black Mountain then courses north through Los Altos and Mountain View, discharging into southwest San Francisco Bay historically at the Mountain View Slough but now virtually entirely diverted via the Permanente Creek Diversion Channel to Stevens Creek and Whisman Slough in San Francisco Bay.
Johnson Creek is a minor tributary of the Rock River, about 20.8 miles (33.5 km) long, in southeastern Wisconsin in the United States. Via the Rock River, it is part of the watershed of the Mississippi River. Its watershed lies entirely within Jefferson County.
Salt Creek is a 24.0-mile-long (38.6 km) tributary of the East Arm Little Calumet River that begins south of Valparaiso in Porter County, Indiana and flows north until it joins the East Arm Little Calumet River just before it exits to Lake Michigan via the Port of Indiana-Burns Waterway.
Brown's Creek is a 9.7-mile-long (15.6 km) stream which originates about 5.5 miles northwest of the city of Stillwater and flows south for about half its length then east to its confluence with the St. Croix River just north of Stillwater in Washington County, Minnesota, United States. It is one of few creeks in the Minneapolis – Saint Paul "Twin Cities" metropolitan area that supports a fishable trout population.
The Little Blackfoot River is a 48-mile (77 km) long tributary of the Clark Fork River, located in Powell County, Montana in the state of Montana in the United States.
Rapid Run is a tributary of Buffalo Creek in Centre County and Union County in Pennsylvania, in the United States. It is approximately 14.4 miles (23.2 km) long and flows through Miles Township in Centre County and Hartley Township, Lewis Township, West Buffalo Township, and Buffalo Township in Union County. The watershed of the stream has an area of 18.7 square miles (48 km2). Some streams in the watershed are impacted by nutrients, sediment, E. coli, and thermal radiation and one unnamed tributary is designated as an impaired waterbody. Rapid Run is a freestone mountain stream in the ridge and valley physiographic province. It flows through a lake known as Halfway Lake and also passes through the Rapid Run Gap.
East Kill, a 16-mile-long (26 km) tributary of Schoharie Creek, flows across the town of Jewett, New York, United States, from its source on Stoppel Point. Ultimately its waters reach the Hudson River via the Mohawk. Since it drains into the Schoharie upstream of Schoharie Reservoir, it is part of the New York City water supply system. East Kill drains the southern slopes of the Blackhead Mountains, which include Thomas Cole Mountain, Black Dome, and Blackhead Mountain, the fourth-, third-, and fifth-highest peaks in the Catskills, respectively.
McLeod Creek is a 9.0-mile-long (14.5 km) northwards-flowing stream that begins 1.3 miles (2.1 km) southwest of Park City, Utah on the east side of the summit of the Wasatch Range. It is one of the upper reaches of the East Canyon Creek watershed in Summit County, Utah, which flows to the Weber River ad ultimately the Great Salt Lake.