36-746: The Sanpoil River (also spelled San Poil ) is a tributary of the Columbia River , in the U.S. state of Washington . The river is named for the Sanpoil , the Interior Salish people who live along the river course. The name is from the Okanagan term [snpʕʷílx] , meaning "people of the gray country", or "gray as far as one can see". The Sanpoil River originates in the Kettle River Range of northeast central Washington, as
72-518: A highstand for up to two centuries at about 15,350 14C yr BP. Some placer gold is known from the lower river system, with reports of small amounts at the confluence of the West fork Sanpoil and Sanpoil and additional reports along the courses of Strawberry and Gold Creeks. The richest gold deposits are from the upper river valley, with alluvial gold found in the Granite Creek, a tributary of
108-683: A confluence of the North Fork Sanpoil and South Fork Sanpoil rivers. It flows west into the Curlew Lake valley and turns south at Torboy where it enters Sanpoil Lake. After flowing out of Sanpoil Lake it is joined by O'Brien Creek near Pine Grove and flows west again through the Ferry County Fairgrounds to the main Sanpoil Valley where it again turns south. Just after turning south below Republic , it
144-466: A landlocked white sturgeon population are all part of the fish fauna. There are other possible natives to the river, the mountain sucker , slimy shorthead and torrent sculpin plus the three-spined stickleback , all of which have ranges possibly including the Sanpoil basin. However, none of these species have been officially been recorded as present. The populations of cutthroat trout found in
180-400: A new river, to be given its own name, perhaps one already known to the people who live upon its banks. Conversely, explorers approaching a new land from the sea encounter its rivers at their mouths, where they name them on their charts, then, following a river upstream, encounter each tributary as a forking of the stream to the right and to the left, which then appear on their charts as such; or
216-652: A period of at least 900 years during the Fraser Glaciation . Concurrently the upper river valley north of the glacial lake area, was covered by ice by the Cordilleran ice sheets Okanogan lobe, which produced the topography seen in the Republic area today. At maximum extent, the lobe sent the Sanpoil sublobe down the upper Sanpoil river valley to a point somewhere between Empire Creek and Manila Creek. It has been suggested that Glacial Lake Columbia maintained
252-400: A river or stream that branches off from and flows away from the main stream. Distributaries are most often found in river deltas . Right tributary , or right-bank tributary , and left tributary , or left-bank tributary , describe the orientation of the tributary relative to the flow of the main stem river. These terms are defined from the perspective of looking downstream, that is, facing
288-449: Is a stream or river that flows into a larger stream ( main stem or "parent" ), river, or a lake . A tributary does not flow directly into a sea or ocean . Tributaries, and the main stem river into which they flow, drain the surrounding drainage basin of its surface water and groundwater , leading the water out into an ocean. The Irtysh is a chief tributary of the Ob river and
324-411: Is also the longest tributary river in the world with a length of 4,248 km (2,640 mi). The Madeira River is the largest tributary river by volume in the world with an average discharge of 31,200 m /s (1.1 million cu ft/s). A confluence , where two or more bodies of water meet, usually refers to the joining of tributaries. The opposite to a tributary is a distributary ,
360-667: Is joined by Granite Creek from the west. The rest of the course flows south through the Colville National Forest , Okanogan–Wenatchee National Forest , and the Colville Indian Reservation . After entering the reservation the river receives its main tributary, the West Fork Sanpoil River. It then receives a number of smaller tributaries such as Twenty-one Mile Creek, Twenty-three Mile Creek, and Thirty Mile Creek. Historically
396-490: The 0.5-year kokanee salmon, 39 (33–68)% of the 1.5-year kokanee salmon, 74 (60–118)% of the 1-year rainbow trout and 53 (44–92)% of the 2 and 3-year old rainbow trout in a 113-day study window. An additional threat to the river system fish is the expansion of invasive northern pike down the upper Columbia from the Pend Oreille River where they were first detected in 2004. Pike have been moving downstream towards
SECTION 10
#1732780540654432-553: The 1905 reorganization of the company into the Spokane and British Columbia Railway, an additional $ 4,000,000 in stocks was authorized for the southern line. However, as of a 1915 valuation by the US Commerce Commission, little actual building or prep work had been made on the southern route due to building debts, and none of the additional stocks had been issued. A series of dams were proposed and investigated along
468-679: The Sanpoil River basin was possibly connected to the Curlew Lake basin , however anthropogenic changes during the early 1900s redirected the northern water flow from the Sanpoil river basin into the Curlew Lake Basin via Lake Roberta and on north to the Kettle River . The Sanpoil River discharges into Franklin D. Roosevelt Lake (Lake Roosevelt), the impounded Columbia River above Grand Coulee Dam . The dam flooded
504-549: The Sanpoil River by the Colville Tribal Fish and Wildlife Department . This was an effort to begin repopulation of the species almost 70 years after the historic runs were killed by completion of Grand Coulee Dam. The salmon were born and raised in the Wells fish hatchery , and do not have a instinctual connection to a specific stream or river for spawning. As a result, in the fall of 2020 the mature adults returned to
540-426: The Sanpoil River from Lake Roosevelt. Smallmouth bass and walleye, two nonindigenous predators that stage at the river/lake interface during the juvenile migration season, are thought to consume large numbers of these species. To determine the percentage that were consumed, Stroud et al. (2010, 2011) used bioenergetic models linked to population estimates. They estimate that the predators consumed 105 (95% CI, 86–162)% of
576-424: The Sanpoil River system to spawn. There are several native carp species including chiselmouth , longnosed dace , peamouth , speckled dace , and the predatory northern pikeminnow . Native suckers include the bridgelip , largescale , and longnose sucker are recorded from the river. A single native minnow, the redside shiner , burbot , three species of sculpin , the mottled , paiute , and prickly , and
612-434: The Sanpoil and Grand Coulee Dam, but had not been detected in that Sanpoil area as of 2018. The pike are noted predators of small and larger fish, with a preference for soft-rayed fish such as salmon and trout. Pike have been moving downstream towards the Sanpoil and Grand Coulee Dam, but had not been detected in that Sanpoil area as of 2018. However in early 2019, two mature pike, a male and an egg laden female, were caught in
648-561: The Sanpoil arm. The pair were caught before the female could spawn, but there is concern that the encroachment could impact native runs of redband and bull trout. The river valley is the hereditary home of the Sanpoil people , the Interior Salish who are now part of the Colville Confederated Tribes . The term Sanpoil is from the Okanagan term [snpʕʷílx] , meaning "people of the gray country", or "gray as far as one can see". Its noted that early misattribution of
684-409: The Sanpoil west of Republic. The Republic Mining District was centered in the upper river basin, with both placer and underground mining operations occurring from 1896 though the early 1900s. Several ore mills were in operation on or near tributaries of the Sanpoil, using mercury plate amalgamation and MacArthur-Forrest cyanide leaching processes. The Sanpoil Volcanics are named in reference to
720-420: The West fork Sanpoil, along with Gold lake and its tributaries are suggested to not be relictual native populations, but possibly have origins dating to historic fish stocking activity. In contrast, a number of streams in the basin host genetically pure populations of the Columbia River redband trout , a subspecies of rainbow trout . There are also a number of introduced fish species that have populations in
756-403: The course of the Sanpoil River prior to 1930, though none would be built. The six sites were spaced along the lower Sanpoil from 7 miles south of the West Fork Sanpoil River confluence to 6 miles north of the old Keller townsite. From upstream to downstream they were to be named Devils Elbow Dam #3, Devils Elbow #2, Devils Elbow #1, Louis Creek Dam, Iron Creek Dam, and Sanpoil Dam; each of the dams
SECTION 20
#1732780540654792-421: The direction the water current of the main stem is going. In a navigational context, if one were floating on a raft or other vessel in the main stream, this would be the side the tributary enters from as one floats past; alternately, if one were floating down the tributary, the main stream meets it on the opposite bank of the tributary. This information may be used to avoid turbulent water by moving towards
828-416: The first-order tributary being typically the least in size. For example, a second-order tributary would be the result of two or more first-order tributaries combining to form the second-order tributary. Another method is to list tributaries from mouth to source, in the form of a tree structure , stored as a tree data structure . Type locality (geology) Type locality , also called type area ,
864-451: The handedness is from the point of view of an observer facing upstream. For instance, Steer Creek has a left tributary which is called Right Fork Steer Creek. These naming conventions are reflective of the circumstances of a particular river's identification and charting: people living along the banks of a river, with a name known to them, may then float down the river in exploration, and each tributary joining it as they pass by appears as
900-717: The last twelve miles of the Sanpoil River as well. This part of Lake Roosevelt is called the Sanpoil Arm. The Sanpoil river runs south between two distinct geologic provinces, the Kootenai Arc and the Okanogan microcontinent . Both of these provinces are overlain in the southern reach of the Sanpoil by the Miocene age Columbia River basalts . The lower river course, to a point north of Manila Creek, were notably marked by cyclical inundation from Glacial Lake Columbia over
936-506: The name was to a "possible Spanish" origin, and that early translations of the name to English included Hudson's Bay Companys 1825 "Lampoile" by John Work and David Douglas 's 1826 "Cinqpoil". The mouth and lower river valley of the Sanpoil was visited by David Thompson and his party on July 3, 1811, after the first day of his journey down the Columbia River. This was the first visit to the lower Sanpoil valley by Europeans , and
972-469: The opposite bank before approaching the confluence. An early tributary is a tributary that joins the main stem river closer to its source than its mouth, that is, before the river's midpoint ; a late tributary joins the main stem further downstream, closer to its mouth than to its source, that is, after the midpoint. In the United States, where tributaries sometimes have the same name as
1008-666: The river into which they feed, they are called forks . These are typically designated by compass direction. For example, the American River in California receives flow from its North, Middle, and South forks. The Chicago River 's North Branch has the East, West, and Middle Fork; the South Branch has its South Fork, and used to have a West Fork as well (now filled in). Forks are sometimes designated as right or left. Here,
1044-456: The river, as the type locality for the formation is an exposure along the river near Republic. The river system hosts a mixture of riverine and lake fish, resulting from the long mouth area formed by the Sanpoil arm of Lake Roosevelt. Before construction of the hydroelectric dams on the Columbia River , notably Grand Coulee Dam in 1941, the Sanpoil basin hosted runs of anadromous salmon and Steelhead trout , along with Pacific lamprey , but
1080-513: The river, including the salominds brook and brown trout , the lake whitefish , the cyprinid common carp and the tench . Sportfish from the sunfish family including black and white crappie , plus largemouth and smallmouth bass , along with the perch family walleye have been established over the years. Possibly due to use as live bait or a forage fish, yellow perch are also present. Relatively low numbers of adfluvial wild rainbow trout and hatchery-released kokanee salmon return to
1116-526: The runs have gone extinct due to the lack of a fish ladder at Grand Coulee. The lost runs include confirmed Chinook salmon populations, and was within the known range of coho , chum , pink , and sockeye salmon runs. Native salmonid family species that are still present in the river system or itinerant visitors from Lake Roosevelt include mountain whitefish , cutthroat trout , rainbow trout , kokanee salmon , bull trout . In August 2019 100 "naive adult" Chinook salmon were released in three groups into
Sanpoil River - Misplaced Pages Continue
1152-510: The section for over two weeks, until the Washington State Department of Transportation completed installation of a temporary one lane bailey bridge over the river from surplus bridge parts. The bridge was not fully replaced and officially reopened for full traffic use until October 2020, with construction of the permanent replacement bridge starting in early 2020. Tributary A tributary , or an affluent ,
1188-418: The smaller stream designated the little fork, the larger either retaining its name unmodified, or receives the designation big . Tributaries are sometimes listed starting with those nearest to the source of the river and ending with those nearest to the mouth of the river . The Strahler stream order examines the arrangement of tributaries in a hierarchy of first, second, third and higher orders, with
1224-432: The streams are seen to diverge by the cardinal direction (north, south, east, or west) in which they proceed upstream, sometimes a third stream entering between two others is designated the middle fork; or the streams are distinguished by the relative height of one to the other, as one stream descending over a cataract into another becomes the upper fork, and the one it descends into, the lower ; or by relative volume:
1260-816: Was done on commission of the Canadian fur trading North West Company who were looking to chart the Columbia for trade routes. On January 2, 1902, the Spokane and British Columbia Railway was approved by the Secretary of the Interior to conduct surveying for a southern line though the Colville Reservation along the Sanpoil River. The full extent of the line was a proposed 140 mi (230 km) route connecting Republic to Spokane, Washington . With
1296-532: Was to create small retention pools for general domestic use. In early 2017, heavy rains combined with intense snowmelt throughout the Sanpoil River Basin resulted in the worst flooding that had been seen in the valley in decades. The flooding washed out at least one house and the west embankment for the State Route 21 bridge over the West Fork Sanpoil River. The highway was impassable through
#653346