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Pilot Valley Playa (Nevada And Utah)
The Pilot Valley Playa is a playa and salt pan in Box Elder County, Utah and Elko County, Nevada that is a remnant of Pleistocene Lake Bonneville. Located in northwestern Utah and northeastern Nevada, the Pilot Valley Playa varies from five to ten miles wide, and is thirty miles long, with an elevation just above 4200 feet. It is bordered by the Pilot Mountains to the west, and the Silver Island Mountains to the southeast. Springs are located in the alluvial fans at the base of the Pilot Range, and no water flows from the Silver Island Mountains. Shallow groundwater (e.g., Bettridge Creek, with threatened Lahotan cutthroat trout) along the western edge of the playa varies from fresh water to brine over a distance of about 2,000 feet. Pilot-Thousand Springs Watershed The Pilot Valley Playa gets very little precipitation, experiences extreme temperatures and high wind speeds. The playa is within the ''Pilot-Thousand Springs Watershed'' (USGS Huc 16020307), a endorheic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pilot Range
The Pilot Range is a mountain range straddling the border of Box Elder County, Utah and Elko County, Nevada, United States. Lying 50 miles west of the Great Salt Lake, the range forms part of the north-west border of the Great Salt Lake Desert. The range reaches a maximum elevation of 10,716 feet at the summit of Pilot Peak. Most of the range is public Bureau of Land Management land and thus has no access restrictions. Its principal uses are mining, livestock grazing, and seasonal elk and deer hunting. Description The Pilot Range begins about north of the community of West Wendover, and continues north-northeastwards for approximately . The abandoned railroad town of Lucin, Utah lay two miles north-east. The range runs SSW to NNE, with various canyons spurring east and west off a prominent ridgeline. It covers an area of about . Elevation varies from a base of feet to ] to 10,716 foot (3,266 m) Pilot Peak.Nevada Atlas & Gazetteer, p. 14-15. Other significant Summit (topo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cutthroat Trout
The cutthroat trout is a fish species of the family Salmonidae native to cold-water tributaries of the Pacific Ocean, Rocky Mountains, and Great Basin in North America. As a member of the genus '' Oncorhynchus'', it is one of the Pacific trout, a group that includes the widely distributed rainbow trout. Cutthroat trout are popular gamefish, especially among anglers who enjoy fly fishing. The common name "cutthroat" refers to the distinctive red coloration on the underside of the lower jaw. The specific name ''clarkii'' was given to honor explorer William Clark, coleader of the Lewis and Clark Expedition. Cutthroat trout usually inhabit and spawn in small to moderately large, clear, well- oxygenated, shallow rivers with gravel bottoms. They reproduce in clear, cold, moderately deep lakes. They are native to the alluvial or freestone streams that are typical tributaries of the rivers of the Pacific Basin, Great Basin and Rocky Mountains. Cutthroat trout spawn in the spring ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salt Flats Of The United States
Salt is a mineral composed primarily of sodium chloride (NaCl), a chemical compound belonging to the larger class of salts; salt in the form of a natural crystalline mineral is known as rock salt or halite. Salt is present in vast quantities in seawater. The open ocean has about of solids per liter of sea water, a salinity of 3.5%. Salt is essential for life in general, and saltiness is one of the basic human tastes. Salt is one of the oldest and most ubiquitous food seasonings, and is known to uniformly improve the taste perception of food, including otherwise unpalatable food. Salting, brining, and pickling are also ancient and important methods of food preservation. Some of the earliest evidence of salt processing dates to around 6,000 BC, when people living in the area of present-day Romania boiled spring water to extract salts; a salt-works in China dates to approximately the same period. Salt was also prized by the ancient Hebrews, Greeks, Romans, Byzantines, Hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pilot Peak (Nevada)
Pilot Peak (Shoshoni: Waahkai) is the highest mountain in the Pilot Range in extreme eastern Elko County, Nevada, United States. It is the most topographically prominent peak in Elko County and the fourth-most prominent peak in Nevada. The peak is on public land administered by the Bureau of Land Management and thus has no access restrictions. History Pilot Peak was named in 1845 for its use as an easily recognized landmark. John C. Fremont saw the peak from the east during his third expedition, mapping the Great Basin. Wondering whether his entire party could cross the desert he sent Kit Carson ahead to scout for water sources. Finding a perennial spring just east of the peak, Carson lit a large bonfire, the smoke from which signaled Fremont that the crossing was possible. In 1846 the Donner Party also used the peak as a landmark for their crossing of the Great Salt Lake Desert, part of the Hastings Cutoff emigrant route. Running out of water, they had to temporarily abandon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silver Island Range
The Silver Island Range, also called the Silver Island Mountains, is a mountain range in Utah, United States, situated the northwest corner of Tooele County and the southwest corner of Box Elder County, about northeast of Wendover. The Silver Island Range lies at the west perimeter of the Great Salt Lake Desert; the southeast flank of the range is on the northwest border of the Bonneville Salt Flats. Geography The Silver Island Range is a rough triangular area which extends into Utah from the Utah - Nevada border, with the Pilot Valley Playa to the west and the Great Salt Lake Desert to the east. The wilderness area includes with sloping stream terraces, foothills, canyons, and steep mountains. Elevation starts at at the base of the range, to more than at the summits. The four tallest peaks in the range are Graham Peak, at , Campbell Peak , Jenkins Peak , and Cobb Peak, at . Other peaks include Tetzlaff Peak, Rishel Peak, and Volcano Peak. With no perennial streams, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Salt Lake Desert
The Great Salt Lake Desert (colloquially referred to as the West Desert) is a large dry lake in northern Utah, United States, between the Great Salt Lake and the Nevada border. It is a subregion of the larger Great Basin Desert, and noted for white evaporite Lake Bonneville salt deposits including the Bonneville Salt Flats. Description Several small mountain ranges occupy the edges of the desert, such as the Cedar Mountains, Lakeside Mountains, Silver Island Mountains, Hogup Mountains, Grassy Mountains, and Newfoundland Mountains. On the western edge of the desert, just across the border in Nevada, stands Pilot Peak in the Pilot Range. The desert is cool during the winter and includes unusual plants adapted to the dry conditions. Most of the desert receives less than of annual precipitation. The salt crust covering the desert reforms yearly when the rain evaporates. The military's Utah Test and Training Range is in the northern portion of the desert. The lowest part of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endorheic
An endorheic basin (; also spelled endoreic basin or endorreic basin) is a drainage basin that normally retains water and allows no outflow to other external bodies of water, such as rivers or oceans, but drainage converges instead into lakes or swamps, permanent or seasonal, that equilibrate through evaporation. They are also called closed or terminal basins, internal drainage systems, or simply basins. Endorheic regions contrast with open and closed lakes, exorheic regions. Endorheic water bodies include some of the largest lakes in the world, such as the Caspian Sea, the world's largest inland body of water. Basins with subsurface outflows which eventually lead to the ocean are generally not considered endorheic; they are cryptorheic. Endorheic basins constitute local base levels, defining a limit of erosion and deposition processes of nearby areas. Etymology The term was borrowed from French ''endor(rh)éisme'', coined from the combining form ''endo-'' (from grc, ἔνΠ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrological Code
A hydrological code or hydrologic unit code is a sequence of numbers or letters (a ''geocode'') that identify a hydrological unit or feature, such as a river, river reach, lake, or area like a drainage basin (also called watershed in North America) or catchment. One system, developed by Strahler, known as the Strahler stream order, ranks streams based on a hierarchy of tributaries. Each segment of a stream or river within a river network is treated as a node in a tree, with the next segment downstream as its parent. When two first-order streams come together, they form a second-order stream. When two second-order streams come together, they form a third-order stream, and so on. Another example is the system of assigning IDs to watersheds devised by Otto Pfafstetter, known as the Pfafstetter Coding System or the Pfafstetter System. Drainage areas are delineated in a hierarchical fashion, with "level 1" watersheds at continental scales, subdivided into smaller level 2 watersheds, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wind
Wind is the natural movement of air or other gases relative to a planet's surface. Winds occur on a range of scales, from thunderstorm flows lasting tens of minutes, to local breezes generated by heating of land surfaces and lasting a few hours, to global winds resulting from the difference in absorption of solar energy between the climate zones on Earth. The two main causes of large-scale atmospheric circulation are the differential heating between the equator and the poles, and the rotation of the planet (Coriolis effect). Within the tropics and subtropics, thermal low circulations over terrain and high plateaus can drive monsoon circulations. In coastal areas the sea breeze/land breeze cycle can define local winds; in areas that have variable terrain, mountain and valley breezes can prevail. Winds are commonly classified by their spatial scale, their speed and direction, the forces that cause them, the regions in which they occur, and their effect. Winds have various asp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Precipitation (meteorology)
In meteorology, precipitation is any product of the condensation of atmospheric water vapor that falls under gravitational pull from clouds. The main forms of precipitation include drizzle, rain, sleet, snow, ice pellets, graupel and hail. Precipitation occurs when a portion of the atmosphere becomes saturated with water vapor (reaching 100% relative humidity), so that the water condenses and "precipitates" or falls. Thus, fog and mist are not precipitation but colloids, because the water vapor does not condense sufficiently to precipitate. Two processes, possibly acting together, can lead to air becoming saturated: cooling the air or adding water vapor to the air. Precipitation forms as smaller droplets coalesce via collision with other rain drops or ice crystals within a cloud. Short, intense periods of rain in scattered locations are called showers. Moisture that is lifted or otherwise forced to rise over a layer of sub-freezing air at the surface may be condense ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brine
Brine is a high-concentration solution of salt (NaCl) in water (H2O). In diverse contexts, ''brine'' may refer to the salt solutions ranging from about 3.5% (a typical concentration of seawater, on the lower end of that of solutions used for brining foods) up to about 26% (a typical saturated solution, depending on temperature). Brine forms naturally due to evaporation of ground saline water but it is also generated in the mining of sodium chloride. Brine is used for food processing and cooking (pickling and brining), for de-icing of roads and other structures, and in a number of technological processes. It is also a by-product of many industrial processes, such as desalination, so it requires wastewater treatment for proper disposal or further utilization (fresh water recovery). In nature Brines are produced in multiple ways in nature. Modification of seawater via evaporation results in the concentration of salts in the residual fluid, a characteristic geologic deposit call ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alluvial Fan
An alluvial fan is an accumulation of sediments that fans outwards from a concentrated source of sediments, such as a narrow canyon emerging from an escarpment. They are characteristic of mountainous terrain in arid to semiarid climates, but are also found in more humid environments subject to intense rainfall and in areas of modern glaciation. They range in area from less than to almost . Alluvial fans typically form where flow emerges from a confined channel and is free to spread out and infiltrate the surface. This reduces the carrying capacity of the flow and results in deposition of sediments. The flow can take the form of infrequent debris flows or one or more ephemeral or perennial streams. Alluvial fans are common in the geologic record, such as in the Triassic basins of eastern North America and the New Red Sandstone of south Devon. Such fan deposits likely contain the largest accumulations of gravel in the geologic record. Alluvial fans have also been found on Mars ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
