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Molalla River
The Molalla River is a tributary of the Willamette River in the northwestern part of Oregon in the United States. Flowing northwest from the Cascade Range through Table Rock Wilderness, it passes the city of Molalla before entering the larger river near Canby. The Molalla is the largest Willamette tributary unblocked by a dam. Course The river's headwaters are in Clackamas County, near the Table Rock Wilderness, in the Cascade Range. Flowing generally north-northwest from the mountains, the river enters the Willamette Valley and flows past the city of Molalla. It is joined by the Pudding River shortly before entering the Willamette near the city of Canby. The confluence is about from the Willamette's mouth on the Columbia River. The map includes mile markers along the Willamette River and most of the Molalla River. The Molalla River is the largest free-flowing tributary of the Willamette. Named tributaries from source to mouth are Henry, Ogle, Mining Iron, Lake, Scorpion, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molalla River State Park
The Molalla River State Park is located in U.S. state of Oregon. It is a few miles north of Canby, and half a mile from the Canby Ferry. The park is south of the Willamette River and east of the Molalla River, at the confluence of the Pudding, Molalla and Willamette rivers. The Pudding River flows into the Molalla from the west, just before the Molalla joins the Willamette. The floodplains of these rivers provide important habitat for waterfowl, wading birds, deer, small mammals, reptiles and amphibians. A blue heron rookery, one of the largest in the Willamette Valley, is located in Molalla River State Park. Gallery File:View_of_the_Molalla_River_from_walking_trail,_of_Molalla_River_State_Park,_Oregon.jpg, View of Molalla River from the walking trail File:Autumn play - Molalla River SP Oregon.jpg, Playing in the autumn leaves File:Beginning_of_walking_trail_at_Molalla_River_State_Park,_Oregon.jpg, Beginning of the walking trail, at parking lot File:Molalla River SP horseshoe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molala People
The Molala (also Molale, Molalla, Molele) are a people of the Plateau culture area in the Oregon Cascades and central Oregon, United States. They are one of the Confederated Tribes of the Grand Ronde Community of Oregon, with 141 of the 882 members in the 1950s claiming Molala descent. The Confederated Tribes of Siletz Indians also has Molalla representation among its confederation of Tribes and Bands. The Siletz Reservation was established in 1855, for the Coast, Willamette and Umpqua Tribes (Rogue River and Shasta Tribes soon after added). The Molalla are one of the Tribes who signed the 1855 Willamette Valley Treaty (aka Kalapuya, etc. Treaty). Language The Molala language was a member of the Plateau Penutian family. It was previously considered a language isolate. Molala is now extinct. History The ancestral lands of the Molala people were located south of the Columbia River where various areas were occupied for seasonal resource exploitation. During the winter, members of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ogle Creek
Ogle Creek is a headwaters tributary, about long, of the Molalla River in the northwestern part of Oregon in the United States. From its source in the Cascade Range, it flows north from far-northern Marion County into Clackamas County near Ogle Mountain. From there it continues north into the river about above its confluence with the Willamette River. The map includes mile markers along most of the Molalla River. Ogle Creek was named for Bob Ogle, a Molalla prospector who found gold along the creek in 1862. An Oregon City Mining Company employee had found placer gold along the upper Molalla in 1860. Over the next 40 years, many others filed mining claims in the Molalla watershed. The biggest claimant, the Ogle Mountain Mining Company, operated the Ogle Mountain Mine between 1903 and 1915. Limited mining continued here until 1953, when Weyerhaeuser bought the land for timber. See also *List of rivers of Oregon This is a partial listing of rivers in the state of Oregon, Unite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oregon Route 99E
Oregon Route 99E is an Oregon state highway that runs between Junction City, Oregon and an interchange with I-5 just south of the Oregon/Washington border, in Portland. It, along with OR 99W, makes up a split of OR 99 in the northern part of the state. This split existed when the route was U.S. Route 99, when the two branches were U.S. 99W and U.S. 99E. (Another such split occurred in California, but with the decommissioning of U.S. 99, that state elected to rename its U.S. 99W as Interstate 5, rather than preserve the directional suffix.) Currently, OR 99E and OR 99W do not reconvene at a northern junction in Oregon; OR 99W has been truncated from its original route, and ends in Downtown Portland, several miles south of its original northern terminus; nor is OR 99 (without a suffix) signed anywhere in Portland. History Route description OR 99E has its southern terminus in Junction City. Almost immediately after leaving the city limits the route crosses the Willamette ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Mile
A river mile is a measure of distance in miles along a river from its mouth. River mile numbers begin at zero and increase further upstream. The corresponding metric unit using kilometers is the river kilometer. They are analogous to vehicle roadway mile markers, except that river miles are rarely marked on the physical river; instead they are marked on navigation charts, and topographic maps. Riverfront properties are sometimes partially legally described by their river mile. The river mile is not the same as the length of the river, rather it is a means of locating any feature along the river relative to its distance from the mouth, when measured along the course (or navigable channel) of the river. River mile zero may not be exactly at the mouth. For example, the Willamette River (which discharges into the Columbia River) has its river mile zero at the edge of the navigable channel in the Columbia, some beyond the mouth. Also, the river mile zero for the Lower Mississippi Ri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Source
The headwaters of a river or stream is the farthest place in that river or stream from its estuary or downstream confluence with another river, as measured along the course of the river. It is also known as a river's source. Definition The United States Geological Survey (USGS) states that a river's "length may be considered to be the distance from the mouth to the most distant headwater source (irrespective of stream name), or from the mouth to the headwaters of the stream commonly known as the source stream". As an example of the second definition above, the USGS at times considers the Missouri River as a tributary of the Mississippi River. But it also follows the first definition above (along with virtually all other geographic authorities and publications) in using the combined Missouri—lower Mississippi length figure in lists of lengths of rivers around the world. Most rivers have numerous tributaries and change names often; it is customary to regard the longest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Confluence
In geography, a confluence (also: ''conflux'') occurs where two or more flowing bodies of water join to form a single channel. A confluence can occur in several configurations: at the point where a tributary joins a larger river (main stem); or where two streams meet to become the source of a river of a new name (such as the confluence of the Monongahela and Allegheny rivers at Pittsburgh, forming the Ohio); or where two separated channels of a river (forming a river island) rejoin at the downstream end. Scientific study of confluences Confluences are studied in a variety of sciences. Hydrology studies the characteristic flow patterns of confluences and how they give rise to patterns of erosion, bars, and scour pools. The water flows and their consequences are often studied with mathematical models. Confluences are relevant to the distribution of living organisms (i.e., ecology) as well; "the general pattern ownstream of confluencesof increasing stream flow and decreasing s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Splash Dam
A splash dam was a temporary wooden dam used to raise the water level in streams to float logs downstream to sawmills. By impounding water and allowing it to be released on the log drive's schedule, these dams allowed many more logs to be brought to market than the natural flow of the creek allowed. Water releases from multiple splash dams on tributaries were also often combined to maximize the number of logs floated throughout a given watershed. Construction Splash dams were typically constructed of logs or boards, which formed cribs that were then filled with stones and earth. They could be anywhere from to several hundred feet wide, and were used from one to several years. A splash dam had to be sited on a section of the stream that allowed as large a body of water to accumulate behind the dam as possible. Behind the dam logs were transported to the creek and its banks, often along log slides. (No ISBN) The splash dam was equipped with a chute to allow water and logs to esc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Logging
Logging is the process of cutting, processing, and moving trees to a location for transport. It may include skidding, on-site processing, and loading of trees or logs onto trucks or skeleton cars. Logging is the beginning of a supply chain that provides raw material for many products societies worldwide use for housing, construction, energy, and consumer paper products. Logging systems are also used to manage forests, reduce the risk of wildfires, and restore ecosystem functions, though their efficiency for these purposes has been challenged. In forestry, the term logging is sometimes used narrowly to describe the logistics of moving wood from the stump to somewhere outside the forest, usually a sawmill or a lumber yard. In common usage, however, the term may cover a range of forestry or silviculture activities. Illegal logging refers to the harvesting, transportation, purchase, or sale of timber in violation of laws. The harvesting procedure itself may be illegal, includin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Placer Mining
Placer mining () is the mining of stream bed (Alluvium, alluvial) deposits for minerals. This may be done by open-pit mining, open-pit (also called open-cast mining) or by various surface excavating equipment or tunneling equipment. Placer mining is frequently used for precious metal deposits (particularly gold) and gemstones, both of which are often found in Alluvium, alluvial deposits—deposits of sand and gravel in modern or ancient stream beds, or occasionally glacial deposits. The metal or gemstones, having been moved by stream flow from an original source such as a vein, are typically only a minuscule portion of the total deposit. Since gems and heavy metals like gold are considerably denser than sand, they tend to accumulate at the base of placer deposits. Placer deposits can be as young as a few years old, such as the Canadian Queen Charlotte beach gold placer deposits, or billions of years old like the Elliot Lake uranium paleoplacer within the Huronian Supergroup i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gold Mining
Gold mining is the extraction of gold resources by mining. Historically, mining gold from alluvial deposits used manual separation processes, such as gold panning. However, with the expansion of gold mining to ores that are not on the surface, has led to more complex extraction processes such as pit mining and gold cyanidation. In the 20th and 21st centuries, most volume of mining was done by large corporations, however the value of gold has led to millions of small, artisanal miners in many parts of the Global South. Like all mining, human rights and environmental issues are common issues in the gold mining industry. In smaller mines with less regulation, health and safety risks are much higher. History The exact date that humans first began to mine gold is unknown, but some of the oldest known gold artifacts were found in the Varna Necropolis in Bulgaria. The graves of the necropolis were built between 4700 and 4200 BC, indicating that gold mining could be at least 700 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Donation Land Claim Act
The Donation Land Claim Act of 1850, sometimes known as the Donation Land Act, was a statute enacted by the United States Congress in late 1850, intended to promote homestead settlements in the Oregon Territory. It followed the Distribution-Preemption Act 1841. The law, a forerunner of the later Homestead Act, brought thousands of settlers into the new territory, swelling their ranks along the Oregon Trail. 7,437 land patents were issued under the law, which expired in late 1855. The Donation Land Claim Act allowed white men or partial Native Americans (mixed with white) who had arrived in Oregon before 1850 to work on a piece of land for four years and legally claim the land for themselves. Along with other US land grant legislation, the Donation Land Claim Act discriminated against nonwhite settlers and had the effect of dispossessing land from Native Americans. History The passage of the law was largely due to the efforts of Samuel R. Thurston, the Oregon territorial deleg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
