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NEBRASKA , a See also:state just N. of the centre of the U.S.A., lying approximately between 400 and 430 N. and between 18° 18' W., and 27° W. from See also:Washington . It is bounded on the N. by See also:South Dakota, on the E. by See also:Iowa and a corner of See also:Missouri, on the S. by See also:Kansas, on the S. and W. by a corner of See also:Colorado, and on the W. by See also:Wyoming . The Missouri See also:river extends along the eastern and See also:north-eastern border . The extreme length of the state is about 430 m., and extreme breadth about 210 M . The See also:area is 77,520 sq. m., of which 712 are See also:water See also:surface . See also:Physical Features.—The state lies partly in the physiographic See also:province of the See also:Great Plains (covering more than four-fifths of its area) and partly in that of the See also:Prairie Plains, and slopes gently from the N.W. to the S.E . The altitudes of extreme See also:geographical points are as follows: Rulo, in the S.E. corner of the state, 842 ft.; Dakota See also:city, in the N.E., 1102; Benkelman, in the S.W. in Dundy See also:county, 2968; Kimball, in the S.W. in Kimball county, 4697; See also:Harrison, in the N.W. corner, 4849 ft . There are three physiographic sub-divisions; the See also:foot-hills (and See also:Bad Lands), the See also:sand-hills and the prairie—all three being portions of three great corresponding regions of the Great Plains and Prairie Plains provinces . The western portion of the state lies in the foot-hills of the Rocky See also:Mountain See also:system, and is much rougher than western Kansas . The surface of western Nebraska is characterized by high, barren table-323 lands, broken by canyons, dotted with buttes, and dominated by some bold and lofty ridges . See also:Pine See also:Ridge, a picturesque escarpment of the Great Plains, cuts across the N.W. corner of Nebraska from Wyoming into South Dakota . A ridge of See also:low hills and bluffs, often precipitous, marked by buttes and deeply cut in places by canyons, it is the most striking surface feature of the state .
The See also:altitude in this region varies from 3500 to 5000 ft
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In the See also:fork of the North and South See also:Platte are the See also:Wild See also:Cat Mountains with contours rising to 5300 ft., in which Wild Cat Mountain, See also:long reported as the highest point in the state, attains 5038 ft., Hogback Mountain 5082 ft., and various other hills—Gabe See also:Rock (5006), Big See also:Horn Mountain (4718), Coliseum Rock (5050), Scotts See also:Bluff (4662) &c.—rise to heights of 45oo to 5000 ft
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In the extreme N.W. the See also: They are sometimes characteristically flat over wide areas, but are usually gently See also:rolling . Stream valleys and bottom lands are the conspicuous modifying feature of the prairie region; but in general, owing to the See also:gentle slope of the streams and the great breadth of the plains, erosion has been slight; and indeed the streams, overloaded in seasonal freshets, are See also:building up their valley floors . The water-partings are characteristically level uplands, often with shallow depressions, once lakes, and some of them still so . The valleys of the greatest streams are huge shallow troughs . The valley See also:floor of the North Platte in the foot-hills, the See also:flood-plain of an older river, is in places 700 ft. or more below the bounding tableland, and to to 15 m. wide; the present flood-plain being from I to 4 m. in width . Hundreds of small tributaries to the greater streams (especially along the Republican and the See also:Logan) complicate and beautify the landscape . No farming country is richer in quiet and diversifed scenic See also:charm than the prairies of the eastern See also:half of the state . The Missouri is noteworthy for high bluffs cut by ravines, which border it almost continuously or at least one See also:side . In the foot-hills there are typical canyons, as along the Platte forks, and in the See also:northern edge of the sand-hills . Those of the upper Republican are the largest, those of the Bad Lands are the most See also:peculiar; and the Niobrara tributary system is the most See also:developed . See also:Rivers.—The Missouri skirts the eastern border for perhaps 500 M . It is not navigated, and save at Sioux City and See also:Omaha serves practically no economic purposes, See also:irrigation. being unnecessary in the counties on which it See also:borders . Its bluffs, cut for the most part in the See also:loess but at places in the rock, are frequently from Too to 200 ft. high . At See also:Vermilion, South Dakota, its alluvial plain, 1131 ft. above the See also:sea, is 330 ft. above the mouth of the Nemaha . The current is always rapid and heavily loaded with sediment,' and its See also:axis is forever shifting . Large areas of See also:soil are thus shifted back and forth between Nebraska and the bordering states, to the encouragement of border lawlessness and uncertainty of titles; some portions E. of the See also:thread and apparently well within Iowa remain under the See also:jurisdiction of Nebraska, or See also:vice versa; and See also:Yankton has been seriously threatened with a sudden See also:transfer from the South Dakota to the Nebraska side . The Platte system is also heavily loaded with sediment in Nebraska . The North and South forks both rise in Colorado; each, especially the latter, has a rapid See also:primary descent, and a very See also:gradual fall down the foot-hills of the Great Plains ? Across Nebraska it maintains a remarkably straight course and an extraordinarily even gradient (about 6 ft. per mile) . In the See also:spring freshets it is a magnificent stream, but in summer its See also:volume greatly shrinks, and it is normally a broad, shallow, sluggish, stream, flowing through interlacing channels among the sand-bars it heaps athwart its course . The underfiow is probably much greater than the summer 1 About 52 grains per See also:gallon at low water, 404 at high . 2 The North Platte falls 3700 ft. in 510 m., the South, 7200 ft. in 427 m., above their junction; the latter falling 2692 ft. in 308 m. after leaving its canyon in the Rockies . surface flow in volume . The Loup system is remarkable for the even See also:dip of its parallel feeders, which once joined the Platte separately, until the latter banked up, its deposits across the mouths of their more sluggish currents. he Republican and South Platte—the former an intermittent stream—suffer in their flow from the drain made upon their See also:waters in Colorado for irrigation . The upper course of the Niobrara above the Keya Paha is in a narrow See also:gorge . Its immediate bluffs and the shores of some of its tributaries, notably the Snake, are modified by canons . This system is also notable among Nebraska streams for a number of See also:pretty water-falls . The White river, heading on Pine Ridge, falls 1 See also:loo ft. in 20 M . Some streams wholly dry up in the dry seasons, and in the foot-hills and sand-hills there are a few that disappear by sinking or evaporation . Surface Water.—Swamps and bogs, apart from purely temporary See also:weather ponds, are confined to a few restricted regions of the Missouri river bottoms and the prairies of the S.E . There are some cut-offs or oxbow lakes along the Missouri, and many lakelets origin-ally such are scattered along the Platte, Elkhorn, Big See also:Blue and other rivers . Scores of lakes are scattered about the heads of streams rising in the sand-hills, especially in Cherry county . Some of them are fresh and some alkaline . Springs also are numerous in the sand-hills, where they See also:form considerable streams . They often flow with force and are known locally from this peculiarity as " artesian " springs, or sometimes, from this and their large See also:size, as " See also:mound " springs . The state See also:fish-hatchery is on springs at South See also:Bend; at Long Pine springs of large flow See also:supply the See also:town and railway shops with water, and led to the See also:establishment here of See also:Chautauqua grounds .
Underground Water.—The so-called blowing-See also:wells are peculiar
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They occur over much of the state, but most frequently S. of the Platte, and are evidently sensitive to barometric conditions; alternately " blowing " or '' sucking " as these vary; so that, in See also:cold weather water-pipes may be frozen too or more feet below the surface of the ground
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Atmospheric pressure is probably the See also:principal cause of their action; they are therefore termed ' weather wells " in some localities
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Nearly all counties have a practically inexhaustible supply of ground water
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Well-depths vary from 15 to 20 ft. in the stream valleys and from 30 to 35 ft. on the loess prairies to 100-400 ft. in the western foot-hill region and isolated prairie areas
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Artesian water is also available in many parts of the state
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At Niobrara, in See also:Knox county, a well 656 ft. deep, drilled in 1896, yielded for a See also:time 2500 gallons per See also:minute at 95-lb pressure (in 1903 1900 gallons at 65-lb pressure), and furnishes See also:power for a See also:flour-See also: The drift covers the eastern fifth of the state . In striking contrast to Iowa. the Nebraska See also:deposit is very thin, seldom thicker than 1 or 2 ft . Above the drift there is usually a heavy covering of loess or " bluff deposit " (particularly typical in the neighbourhood of Omaha and See also:Council Bluffs) . Though thin and worn out in places, it averages probably too ft., and is often as much as 200 ft. in thickness, and runs diagonally across the state from the N.E. to the Colorado inset . The See also:opinion that it is of aqueous origin (and probably See also:dates from the See also:close of the glacial time) has the See also:weight of authority . It was spread by the rivers: some et idences of wind action may be attributed to a later See also:period . The sand-hills, which overlap the loess N. of the Platte, are probably mainly derived from the Arikaree, but probably also in part from the See also:early Pleistocene . See also:West of 102° long. there are beds several See also:hundred feet thick of See also:late Tertiary sands and See also:clays . The Arikaree (Miocene) and Ogallala (Pliocene) formations of the North Loup beds are superficial over much of the western half of the state, the former to the N., the latter to the S . The buttes are characteristically Arikaree or Gering formations topping Brule See also:clay . The same is true of at least considerable parts of Pine Ridge . In the Bad Lands there are scanty outcrops of the Chadron formation (known also as " Titanotherium beds "), the See also:oldest of the Tertiary beds . The thick superficial coverings over the state make difficult the determination of the underlying strata . There are only very scanty outcrops except along the rivers . No Archean rocks are exposed in Nebraska, and the sedimentary formations are undisturbed in situ . The Palaeozoic era is represented only by the Pennsylvanian See also:series of the Upper Carboniferous and a scanty See also:strip of Kansas-Nebraska See also:Permian, and is confined to the S.E. counties . But, though small in area, the Carboniferous is by far the most important formation as regards See also:mineral resources within the state . It is buried probably 2000 or goo ft. in central Nebraska, outcropping again only in the Rocky Mountains . Upon it, in the trough thus formed, See also:rest conformably the basal strata of the Cretaceous; the See also:Jurassic and Triassic being wholly absent (unless in the extreme north-west), The E. limit ofthe Cretaceous extends across the state from N. to S. between 98° and 99° W. long . Its See also:groups include the Dakota formation, characterized by a very peculiar rusty See also:sandstone, and the See also:Benton, both of which are rather widely accessible and heavy; the Niobrara; the See also:Pierre shales, which apparently underlie about three-quarters of the state in a deep and heavy See also:bed; and, in the extreme west, the See also:Laramie . There are almost no Cretaceous outcrops except on the streams, especially the Niobrara, Republican and Platte rivers—and in the Bad Lands . The superficial Miocene and Pliocene deposits in the west, above referred to, are underlaid by the White river groups of the Oligocene, whose outcrops of Brule clay and Chadron formation also have been mentioned . The Bad Lands are essentially nothing but fresh-water mud excessively weathered and eroded . They are often intersected by dikes of See also:chalcedony, formerly mistaken for See also:lava .
The Bad Lands and the Arikaree are famous fossil See also:fields, the latter being the source of the Daemonelix, or " See also:Devil's See also:cork-See also:screw," a large See also:spiral fossil, apparently a lacustrine alga
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It was once generally supposed that the Pliocene See also:epoch in Nebraska was distinguished by the activity of geysers; but the so-called " geyserite " now known commonly and correctly as "natural See also:pumice " and " volcanic ash," which is found in the Oligocene and later formations, has no connexion whatever with geysers, but is produced by the shattering of volcanic rock
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It occurs widely in Nebraska and adjoining states
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Minerals.—Mineral resources are decidedly limited; the See also:total value of the mineral output (excluding See also:coal) in 1907 was $1,383,916, of which $953,432 was the value of clay products, $324,239 of See also: Of building stones limestones are the most abundant and important, the best comes from the Benton beds and when " See also:green " can be sawed into blocks . The Dakota formation, though its sand-stones are in general coarse or otherwise inferior, yields some of splendid quality . Its clays. which are of all See also:colours, are the most valuable of the state . The finest building stone is a beautiful green See also:quartzite rock of dense, See also:fine texture and lasting quality . It is related to the Ogallala beds and occurs only in small areas . The quarries and clay pits of the state are mainly in the Carboniferous region of the S.E . Cretaceous See also:lignite occurs in small quantities in the N.E., and See also:peat more widely . The Carboniferous formations carry only thin seams of coal, never thicker than about 2 ft., and rarely readily accessible, and they can never be of more than small and merely See also:local importance . See also:Flora.—Nebraska lies partly in the arid, or Upper Sonoran, and partly in the humid, or Carolinian, area of the Upper Austral See also:life-See also:zone; the divisional See also:line being placed by the See also:United States Biological Survey at about too° W. long . The most marked characteristic of Nebraskan vegetation is its immigrant See also:character, and the state has been called " one of the finest illustrations of the commingling of contiguous See also:species to be found anywhere in See also:America " (C . E . Bessey) . Immigrant species have even come from See also:Texas and New See also:Mexico, from the Dakotas and the Rockies . From the last-named various species have crept two-thirds of the way across the state, one (the See also:buffalo See also:berry) wholly covers it, and some have barely crossed into the border foot-hills from Wyoming . A very few trees and shrubs, and some See also:grasses, are strictly endemic to the plains and to Nebraska . Four floral regions lying in north to south belts across the state, and closely corresponding to—though in boundaries by no means coinciding with—its great topographic divisions are distinguished in the regions of the Missouri border, the prairies, sand-hills and foot-hills . In 1896 some 3196, and by 1905 fully 3300 species had been listed, " representing every See also:branch and nearly every class of the See also:vegetable See also:kingdom " (C . E . Bessey) . There are at least 64 trees and at least 77 shrubs growing native in the state; but of their See also:joint number a See also:mere half-dozen or so can be classed as strictly endemic . Small See also:woods of broad-See also:leaf trees (and red cedars) grow very generally along all the water-courses of the state; and coniferous species grow along Pine Ridge and the Wild Cat Mountains . In the East, various trees are readily grown on the uplands; in the West the See also:honey-See also:locust, the Osage See also:orange and See also:Russian mulberry for windbreaks; the green ash, and red See also:cedar are perhaps the most valuable drought resisting species . The conifers are spreading naturally . In the sand-hills the sand-See also:bar See also:willow of the rivers and the cottonwood growing naturally, See also:evidence the good conditions of moisture; and the forestation of much of the region is undoubtedly possible . See also:Forest reserves were established on the See also:Dismal river in 1902 and millions of seedlings had been grown by 1906 for transplantation in Nebraska and other states of the Great Plains . Arbor See also:Day (the loth of See also:April) was instituted by the Nebraska State See also:Board of See also:Agriculture in 1872 at the instance of See also:Sterling See also:Morton, later secretary of agriculture of the United Mates (see ARBOR DAY) . It has been yearly observed by the public See also:schools of the state, and no state has done more than Nebraska for the forestation of its See also:waste and prairie lands . In such a purely agricultural state a large wooded area is not desired . Plums, grapes and the See also:dwarf " sand-cherry " (Prunus demissa) of the sand-hills are prominent among many wild fruits . The flora is decidedly rich in species as compared with other states, but less so in the number of individuals . Grasses are perhaps the most noteworthy vegetable forms . Nebraska claims a greater variety of native See also:hay and See also:forage species than grow in any other state of the See also:Union . No less than 200 grasses, at least 154 being wild or commonly cultivated, had been listed in 1904 . Of the total 200 species 150 (130 indigenous) are valuable for forage, 34 (20 indigenous) are classed economically as weeds, to are non-indigenous cereals and 6 are ornamental . The See also:short buffalo-grass was originally everywhere abundant, but it had practically disappeared by 1890 from the eastern half of the state, and since then has steadily become more restricted in See also:habitat . The native prairie grasses have been in considerable part displaced by grasses introduced from more humid regicns . Weeds are very numerous (about 125) ; and some, notably the sand-See also:bur (Soianum rostratum) See also:cockle-bur, and tumble-weeds among indigenous, and the Russian See also:thistle (Salsola tragus) and See also:purslane among non-indigenous species, are agricultural pests . Nothing can surpass in beauty the See also:rank grasses and See also:bright See also:flowers that grow on the lowlands and rolling uplands of a virgin prairie—now hardly to be found in the state . The See also:common See also:sunflower (the most conspicuous See also:weed of the state) and allied flowers, which spring up in myriads even in the midst of unbroken prairie wherever this is disturbed, line the roads with yellow bands from See also:horizon to horizon, enclose the broken fields and choke waste places . See also:Fauna.—The fauna of the state is not known with the same thoroughness and detail as the flora, but it too is varied . This is notably true of birds and of See also:insects . Of the latter there are probably 12,000 to 15,000 species, including 140 butterflies, at least 18o grasshoppers, several hundred bees, &c . The so-called " grass hoppers," true locusts, have done great damage at times in Nebraska . About a third of all the species known in the United States are found within the state or close to its borders, and of these, 9 or 10 are so common that their increase under conditions favourable to their development may be a danger Such conditions are found in dry years, unfavourable to their See also:chief parasitic enemies, favourable to their own breeding, and the cause of their migrations . There were locust plagues in 1874, 1876 and 1877 . Fungus parasites have been used with some, but on the whole rather slight, success, and See also:mechanical appliances with perhaps greater success, in combating these pests . Birds are more effective . As in the See also:case of See also:plants, western, eastern, northern and See also:southern avian species meet in Nebraska . In 1905 some 415 to 420 species had been found within its borders, and more than half of these were known to See also:nest in the state; 120 had been counted in the See also:winter . The lakes of the sand-hills are the breeding-See also:place--less so as settlement increases—of myriads of water-See also:fowl . Before the See also:advent of the white See also:man Nebraska was full of wild mammals, the buffalo, See also:elk, See also:black and white tailed See also:deer, See also:antelope, bears, See also:timber wolves, panthers (pumas), See also:lynx, See also:otter and See also:mink being common . Almost all that remain are black bears, foxes, coyotes (prairie wolves), mink, See also:musk-rats, raccoons and prairie See also:dogs (or gophers) . Antelope were not uncommon in the west and northwest until after 1890 . The See also:coyote is still so common even in the east as to be a See also:nuisance to the See also:farmer; in 1907 a See also:bounty See also:law was in force which provided for the See also:payment of a state bounty of $5, on every See also:grey See also:wolf, $1.25 on every coyote and $1 on every lynx (wild cat) . A few rodents have increased in See also:numbers; the prairie See also:dog especially is a pest in the See also:alfalfa fields of the arid lands (as are See also:pocket-gophers at places in the east) . See also:Climate.—The climate of Nebraska is typically inland or See also:continental; i.e. it is characterized by " winters of considerable severity, summers of unusual warmth, rainfall in limited quantities, marked and sudden changes of temperature, large seasonal and daily temperature ranges, and dry, salubrious See also:atmosphere, with a small percentage of cloudiness, and a large percentage of See also:sunshine."r The See also:average wind velocity for the High Plains of Nebraska and adjoining states is about to to 12 m.; 25 M. is not uncommon; and a velocity of 40 M. and over is recorded a half-dozen or more times every See also:year . In spring velocities of 15 to 20 M. are common . The average velocity of winds for the entire state for 11 years preceding 1906 was 9.8 m. per See also:hour . The prevailing directions are those common to a large part of the western See also:Mississippi valley . The prevailing wind of the year is N.W.; but in the spring, the summer and much of the autumn its predominance is greatly reduced or overcome by S. and S.W. winds blowing from the Gulf of Mexico (but deflected by the rotation of the earth) . Sometimes these winds blow in the winter—causing the curious phenomenon of melting snows on the coldest days of the year; in the summer in seasons of drought, especially in the western part of the state, this wind from the Gult sometimes reaches Nebraska r See also:Senate Executive Document 115 (vol . 10), 51 See also:Congress, 1 Session (1890), Climate of Nebraska.wrung dry of its moisture and so hot that in a day or two it shrivels and ruins the crops in its path . Such calamities are, however, uncommon, and the belief that Nebraska is often visited by tornadoes is erroneous . The normal mean-See also:annual temperature of the state is about 48.7 ° F, and the normals for the six approximately equal weather sections into which the state is divided by the See also:National Weather Service are respectively about 48°, 50.5 48.6 50.40, 47`9° and 46.6° F . This illustrates the extraordinary homogeneity of See also:climatic conditions . But there is a considerable difference in the averages for different months—the normal means of See also:January and See also:July through 30 years being 20.9° and 74.6° F., and the means of spring, summer, autumn and winter respectively about 48°, 72°, 53° and 23.50 F . Thus there is for any particular locality a wide range in See also:absolute temperature through the year, which averages for the state probably about 120° (1897-1905) . Similarly, the range is large through the day, especially in the higher altitudes, where the nights are almost invariably cool and refreshing after even the hottest day . The number of continuous days with a mean temperature above 50° F., averages probably about 175 for the state . The actual growing-See also:season between frosts is, however, not so great . Temperature is of course See also:lower as one moves to the N. and N.W., the initial planting and harvesting of each See also:crop progressing See also:wave-like across the state in from one to two See also:weeks . Especially in the W. and N.W. there are in some winters occasional See also:anti-cyclonic or high-area storms known as blizzards—wind-storms preceded or accompanied by See also:snow-fall—which are very severe . They continue from one to three days, and are habitually followed by very low temperature . They are the cause of great loss to the See also:cattle owners . Such storms are, however, rare . In the S.E. portion of the state the winters are characteristically mild and open . Temperatures below zero are rare for any locality; and the same may be said of temperatures above 95° in summer . The normal mean-annual precipitation for the whole state is about 23.84 in. in See also:rain and melted snow, the actual yearly fall varying through 30 years between 13.30 and 31.65 in . Such rainfall might seem inadequate for an agricultural country: moreover, the eastern half of the state is more favoured than the western, which belongs, indeed, to the semi-arid Great Plains on which the Reclamation Service of the United States See also:Government is active . But aridity is a. See also:matter of the efficiency rather than of the mere quantity of rainfall, and in this regard Nebraska is very fortunately situated . Rain is most plenteous in the See also:critical months of the year . Seven-tenths of all pre |