[22] Since the area experiences a Mediterranean climate, most of the precipitation occurs between November and March. Although long stretches of the Middle Fork have been dewatered by diversions, the portion of the river and canyon in the Auburn State Recreation Area is one of the state's most popular whitewater runs. Class IV whitewater with additional challenges.
The Middle Fork has whitewater rafting below Oxbow Reservoir; due to an informal agreement between Placer County Water Agency and the various commercial rafting companies operating on the Middle Fork, boatable flows are released year-round except in severe droughts.
[47] The dam was rebuilt and completed in 1966.[48]. [44], In 1906 John C. Hawver, an Auburn dentist, discovered large limestone caverns along the lower Middle Fork canyon north of Cool at a height of some 700 feet (210 m) above the river.
The Western States Trail follows a winding 100-mile (160 km) course through the canyons of the Middle Fork and its tributaries from Auburn to Squaw Valley.
Before heading out, be sure to check the relevant Dreamflows flow report and Bulletin Board thread to determine current and expected release trends.
Water flows are measured in cubic feet per second (CFS), which indicates the amount of water which passes through a single point in the river. [29], The Middle Fork is home to many fish species; rainbow trout, brown trout, Sacramento sucker, and Sacramento pikeminnow are found along the length of the river, and smallmouth bass are present in most of the major reservoirs and lakes.
[1] The Confluence is just east of Auburn, directly upstream of Highway 49 and below the Foresthill Bridge.[16]. 3. However, since there were no permanent residences in the canyon, there was no loss of human life, and the floodwaters were contained by Folsom Lake, sparing the city of Sacramento from damage. In 1863 William Brewer had crossed the Sierra Nevada via the Middle Fork and Squaw Valley, accomplishing what Jedediah Smith had failed to do almost 40 years earlier. In order to force the river back into the tunnel, a narrow channel was blasted through the ledge, creating the formidable rapid known today as Tunnel Chute.
The old Native American trail Brewer had followed was subsequently used by some miners during the silver boom in Nevada, but due to its ruggedness and lack of water along much of the route, it failed to become a major crossing of the Sierra Nevada.
Explore the NEW USGS National Water Dashboard; to access real-time data from over 13,500 stations nationwide.
800 – 1600 CFS: normal flows.
[64], massive flooding struck northern California, "National Hydrography Dataset via National Map Viewer", "USGS Gage #11433500 on the Middle Fork American River near Auburn, CA: Monthly Statistics", "United States Geological Survey Topographic Map: Granite Chief, California quad", "United States Geological Survey Topographic Map: Royal Gorge, California quad", "United States Geological Survey Topographic Map: Bunker Hill, California quad", "United States Geological Survey Topographic Map: Greek Store, California quad", "United States Geological Survey Topographic Map: Michigan Bluff, California quad", "United States Geological Survey Topographic Map: Foresthill, California quad", "United States Geological Survey Topographic Map: Georgetown quad", "United States Geological Survey Topographic Map: Greenwood quad", "United States Geological Survey Topographic Map: Wentworth Springs quad", "Supporting Document F: Description of the Middle Fork American River Watershed", "The Middle Fork of the American River Restoration Project", "Big Trees Grove northernmost collection of Sequoias", "2005 Final Cultural Resources Inventory Report", "American River National Recreation Area Feasibility Study Report", "Channel changes wrought by gold mining: Northern Sierra Nevada, California", "Historic mining ditches of El Dorado County, California", "Vandals blocked out of iconic Hawver Cave near Auburn: Concrete blocks cover heavy metal gate at fossil discovery site", "Geological Survey Professional Paper 422-M: Flood Surge on the Rubicon River, California–Hydrology, Hydraulics and Boulder Transport", "Case Study Report #27: Hell Hole Reservoir, Rubicon River", "Bridge with a twist: Unique hanging-arc design solves environmental and engineering problems", "American River Pump Station Project: Draft Environmental Impact Statement/Environmental Impact Report", "Gold panning spikes in Auburn State Recreation Area rivers", "North Fork/Middle Fork American River Sediment Study", "Supporting Document B: Detailed Existing Project Description", https://en.wikipedia.org/w/index.php?title=Middle_Fork_American_River&oldid=979950973, Articles with unsourced statements from February 2019, Creative Commons Attribution-ShareAlike License, This page was last edited on 23 September 2020, at 18:34.
In addition, sudden higher or lower (or no) releases may result from emergency mechanical or electrical conditions. [8][10] The Middle Fork's canyons, often exceeding 2,000 ft (610 m) in depth, are bounded by extensive high ridges on either side, with Red Star and Chipmunk Ridges to the north and south of the river, respectively, between French Meadows and Duncan Creek. Releases Below Ralston Dam. Almost the entire watershed is forested, with the exception of the alpine zone at the highest elevations near the Sierra Crest, and some areas of grasslan…
[39] The Middle Fork continued producing large amounts of placer gold into the 1880s, more than 20 years after most nearby streams had been exhausted.[40]. On December 23 the incomplete dam was overtopped and destroyed, and a 60-foot (18 m) wall of water swept down the Rubicon, lower Middle Fork, and lower North Fork canyons, triggering landslides, uprooting trees, and obliterating any buildings and bridges along its path. The diversion of Army resources at the onset of World War II postponed this project indefinitely. 4. The popular motorcycle/ATV riding area was established in 1993.
L.L.
With the Forest Hill Divide forming the northern boundary of the watershed, the major ridges heading south are Deadwood, Mosquito, Red Star, Ralston/Chipmunk and Nevada Point Ridges.
Dreamflows Middle Fork American Flow Graph. The following is a guideline for different water levels: Tunnel Chute rapid remains a Class V rapid. Part of the trail in the Auburn State Recreation Area has been named the Wendell T. Robie Trail. [26] Fuel loading in forests has increased due to interruption of the natural fire cycle, leading to an increase in the number and intensity of fires in recent decades.
The Middle Fork American River watershed encompasses 616 square miles (1,600 km2), which represents about 33 percent of the total American River drainage basin above Folsom Lake.
Smith's party searched, unsuccessfully, for a way to cross the Sierra Nevada via the American River, though they later did cross the Sierra Nevada via Ebbetts Pass becoming the first non-natives to do so. By 1912 the Pacific Portland Cement Company was operating a limestone quarry near the site. A debris dam to contain sediment on the Middle Fork was first contemplated in 1891.
[9] The Middle Fork continues west towards the western end of Ralston Ridge, north of Balderson Station, where it is joined by its largest tributary, the Rubicon River.
Less than two years later, nearly 10,000 miners had staked claims on the Middle Fork, with some of the richest sites including Ford's Bar, Maine Bar, Murderer's Bar and Spanish Bar. Below Anderson Dam the Middle Fork begins to form the boundary between the Tahoe National Forest on the north and the Eldorado National Forest on the south, almost to its confluence with the North Fork. Thanks to the California Department of Water Resources for providing web pages linked to real-time gauges for the South Fork and many other California rivers.. Best Real-time River Flows Information. It operates several reservoirs in the upper Rubicon drainage, the largest being Loon Lake.
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