Water-supply Paper, Volumes 499-500U.S. Government Printing Office, 1925 - Irrigation |
From inside the book
Results 1-5 of 69
Page iv
... Grades of mountain slopes . Cliffy slopes --- Boulder - controlled slopes__ . Rain - washed slopes ... Canyon ... grade___ 129 Falls due to renewed uplift__ . 131 Sand tanks____ 134 Characteristics of water in tanks . 135 Surface ...
... Grades of mountain slopes . Cliffy slopes --- Boulder - controlled slopes__ . Rain - washed slopes ... Canyon ... grade___ 129 Falls due to renewed uplift__ . 131 Sand tanks____ 134 Characteristics of water in tanks . 135 Surface ...
Page xiii
... grade of mountain slopes ---- 81 6. Sketch map of the Papago country showing distribution so far as observed of gullied and ungullied mountains of approxi- mately the same size ---- 7. Diagram showing four stages in the erosion of a ...
... grade of mountain slopes ---- 81 6. Sketch map of the Papago country showing distribution so far as observed of gullied and ungullied mountains of approxi- mately the same size ---- 7. Diagram showing four stages in the erosion of a ...
Page 67
... grade , and consequently the stream - built slopes of the adjacent mountains of the interrior valleys slope to the top of the terrace . The cutting down of Gila River to or perhaps below its present level changed the base - level of the ...
... grade , and consequently the stream - built slopes of the adjacent mountains of the interrior valleys slope to the top of the terrace . The cutting down of Gila River to or perhaps below its present level changed the base - level of the ...
Page 68
... grades and perhaps belongs to the older alluvium . The gravel con- tains boulders of all sizes up to 3 feet in diameter and is similar to the channel gravel in the present streams . The upper 2 feet is thoroughly cemented with calcium ...
... grades and perhaps belongs to the older alluvium . The gravel con- tains boulders of all sizes up to 3 feet in diameter and is similar to the channel gravel in the present streams . The upper 2 feet is thoroughly cemented with calcium ...
Page 76
... grade . The eastward - flowing streams then do not have a smooth , continuous grade , but one which is steep at the divide and becomes more gentle . then very steep , and gradually gentle again . ( See p . 131 and fig . 27. ) As the ...
... grade . The eastward - flowing streams then do not have a smooth , continuous grade , but one which is steep at the divide and becomes more gentle . then very steep , and gradually gentle again . ( See p . 131 and fig . 27. ) As the ...
Other editions - View all
Common terms and phrases
adobe flats Ajo Mountains alluvial slope alluvium Altar Valley Arivaca Arizona arroyo Baboquivari Mountains Batamote boulders Butte canyons Casa Casa Grande channel Charco conglomerate Copeka Coyote Mountains Cross Crossroads crystalline complex Cubo deposits desert diameter dissected east erosion Faint road fault feet deep flood plain Geological Survey sign Gila Bend Gila River gneiss granite Growler Mountains hills inches Indian Oasis lava Lechuguilla Desert log in opposite Maricopa mesquite miles wide moun mountain pediment Nogales Papago country Peak pediment Pima County Pisinemo plateaus Quijotoa radicle railroad ranchería range region represo reservoir Reverse fork ridge Road comes road goes Road on left Road on right route Sand Tank Santa Cruz River Sauceda Sierra Sierra Estrella Sonoita Sonoita River stream surface tains Tertiary Tinajas Altas traveler Tucson Tule Turn to left Turn to right Vekol water supply watering places Wellton Yuma
Popular passages
Page xv - In so far as the authorization made herein will permit, to discover, develop, protect, and render more accessible for the benefit of the general public! springs, streams, and water holes on arid public lands of the United States; and in connection therewith to erect and maintain suitable and durable monuments and signboards at proper places and intervals along and near the accustomed lines of travel...
Page 105 - The water was thick with mud, slimy with foam, and loaded with twigs, dead leaflets and other flotsam ; it was seen up and down the road several hundred yards in either direction or fully half a mile in all, covering the entire surface on both sides of the road, save a few islands protected by exceptionally large mesquite clumps at their upper...
Page 105 - The torrent advanced at race-horse speed at first, but, slowing rapidly, died out in irregular lobes not more than a quarter of a mile below the road ; yet, though so broad and tumultuous, it was nowhere more than about 18 inches and generally only 8 to 12 inches in depth, the diminution in depth in the direction of flow being less rapid than the diminution in velocity.
Page 85 - ... been produced by any process now in action, but that, laid on the slope in some ancient time, they have ever since been slowly rotting and disintegrating. The bedrock on which the boulders lie is covered with a loose film of small fragments made up of the mineral grains that once formed the granite. The fragments slip under the foot, and new pieces crumble from the bedrock continually. Disintegration of the bedrock proceeds most rapidly along joints but is effective everywhere. Every rainstorm...
Page 6 - As far as I can judge, it does not appear to me that there is any hope of getting gold or silver, but I trust in God that, if there is any, we shall get our share of it...
Page 13 - In these new nations and new lands there are many good veins and mineral lands bearing gold and silver; and in the neighborhood and even in sight of these new missions and new conversions some very good new mining camps of very rich silver ore are now being established.
Page xv - ... over the general area of said desert lands, containing information and directions as to the location and nature of said springs, streams, and water holes, to the end that the same may be more readily traced and found by persons in search or need thereof; also to provide convenient and ready means, apparatus, and appliances by which water may be brought to the earth's surface at said water holes for the use of such persons ; also to prepare and distribute suitable maps, reports, and general information...
Page 94 - The eplgene profiles of the desert : California Univ. Dept. Geology Bull., vol. 9, p. 34, 1915. plain and are more or less strung out in lines which are prolongations of the intercanyon ridges of the mountains. Unfortunately no maps that cover large areas of normal pediment are available. The northern slope of the western part of the Sacaton Mountains is shown in figure 13. The plains around the hills and small mountains are cut on rock, but the northern part of the area shown has a heavy burden...
Page xv - ... the general public springs, streams, and water holes on arid public lands of the United States; and in connection therewith to erect and maintain suitable and durable monuments and signboards at proper places and intervals along and near the accustomed lines of travel and over the general area of said desert lands, containing information and directions as to the location and nature of said springs, streams, and water holes, to the end that the same may be more readily traced and found by persons...
Page 13 - THESE NEW CONVERSIONS AND FOR THE TOTAL REDUCTION OF THIS NORTH AMERICA, WHICH HITHERTO HAS BEEN UNKNOWN I. First, there are already many cattle, sheep and goats, and horses; for, although in the past year I have given more than seven hundred cattle to the four fathers who entered this Pimeria, I have for the other new conversions and missions which by the favor of heaven it may be desired to establish, more than three thousand five hundred more cattle; and some of them are already far inland, ninety...