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Articles 451 - 471 of 471
Full-Text Articles in Civil and Environmental Engineering
Evaluation Of Sprinkler Systems In Northern Utah, Murray J. Gavel
Evaluation Of Sprinkler Systems In Northern Utah, Murray J. Gavel
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Sprinkling as a method of irrigation has been expanding rapidly in the United States, with acreages irrigated by this method increasing every year. One of the major reasons for the expansion is the great improvements that have been made in sprinkler irrigation equipment. Light weight aluminum pipe, with quick couplers, improved pump and motor efficiencies have all made sprinkler irrigation more desirable. High efficiency of water application, labor requirements, and favorable plant response have also favored the expansion.
Another reason for the increase in sprinkler irrigation is that new lands being brought under irrigation are often not adaptable to surface …
Effectiveness Of Evaporation From Ground And Foliage In Reducing Soil Moisture Depletion, Val D. Wynn
Effectiveness Of Evaporation From Ground And Foliage In Reducing Soil Moisture Depletion, Val D. Wynn
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Field irrigation efficiency is the percentage of the water delivered to the field that becomes available to the crop as soil moisture. The so-called "evaporation losses" from wetted ground and foliage are rather difficult to measure, but are estimated by Christiansen (3) to be between 15 and 30 percent. No doubt part of this may be termed as a "loss," but the other part may be incorrectly termed as such. Many authorities claim that water must pass through the plant before being transpired into the atmosphere to be effectively used.
Sediment Movement In Bear River, Utah, Calvin Geary Clyde
Sediment Movement In Bear River, Utah, Calvin Geary Clyde
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
In the northern part of Cache Valley, Utah, accelerated erosion in recent decades has cut deep gullies of impressive size into the flat, irrigated bench land along the Bear River. Millions of tons of fine sediment have been washed into the river and great amounts have been deposited in the river bed. The resulting flooding and high water-table have caused much damage to the land near the river.
Consumptive Use Of Water By Major Farm Crops In The Milford District Of Utah, Glen H. Calder
Consumptive Use Of Water By Major Farm Crops In The Milford District Of Utah, Glen H. Calder
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Irrigation water supplies in the arid West have become limited, yet the area of irrigable land is still extensive. To realize the more efficient use of the available supply, or for planning new irrigation projects, studies are needed to determine how much water is consumptively used by farm crops and native vegetation.
Drainage Of The Logan-Hyde Park-Benson Area, Utah, Gordon H. Flammer
Drainage Of The Logan-Hyde Park-Benson Area, Utah, Gordon H. Flammer
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
B.A. Etcheverry (4) in his book, Land Drainage and Flood Protection, states that inadequate drainage causes: (1) a public health menace, (2) an animal health menace, (3) lower grade plant life, (4) inadequate soil saturation, (5) lower soil temperatures, (6) shallow root penetration and, therefore, plant suffering in late summer months from effects of drought, (7) poor soil texture and workability, (8) increased surface washing and erosion of land surface, and (9) alkali and saline conditions. Other factors such as poorer roads and highways, decreased tax revenues, etc., might be added to this list. The advantages of adequate drainage …
The Discharge Coefficient In The Coordinate Method For Measuring Pipe Flow, Day L. Bassett
The Discharge Coefficient In The Coordinate Method For Measuring Pipe Flow, Day L. Bassett
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Agriculture, industry, and community life continue to impose great demands upon available sources of water, particularly in arid and semi-arid regions. Efficient utilization of water, demanding careful distribution and use, implies flow measurement.
The coordinate method for measuring pipe flow finds some application in industry where estimates must be made of the flow of fluids containing relatively large amounts of suspended solids that would render other measuring devices ineffective. Widest application may be found, however, in agriculture where a simple, quick, and inexpensive means for estimating well flow, pump discharge, drain efflux, etc., is necessary if the farmers are to …
Unit Consumptive Use Of Water Studies In The Ashley And Ferron Valleys Of Utah For The 1950 Growing Season, James O. Henrie
Unit Consumptive Use Of Water Studies In The Ashley And Ferron Valleys Of Utah For The 1950 Growing Season, James O. Henrie
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
For the past 2 years a project has been carried on by the Utah Agricultural Experiment Station and the United States Department of Agriculture, Soil Conservation Service, in cooperation with the Utah State Engineer, in the Ashley and Ferron valleys of Utah to determine the consumptive use of water in these areas. This report is the preliminary part of the third year of study. It includes a determination of unit consumptive use values for the major agricultural crops. These values will later be used by the Soil Conservation Service and Experiment Station in determining the valley consumptive use by the …
Drainage By Pumping In The Lewiston Area, Utah, Paul J. Pehrson
Drainage By Pumping In The Lewiston Area, Utah, Paul J. Pehrson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
In irrigated areas it often becomes necessary to provide means by which the excess water may be removed. After a period of time if these drainage provisions are not made, it may become necessary, because of the saline soils or water logged condition that may develop, to abandon the land for agricultural purposes.
The increases of irrigation on the higher lands in Utah has resulted in an increased need for drainage on much of the lower land in the valleys. This increased need for drainage has long been recognized and in 1947 it influenced the Utah Agricultural Experiment Station, in …
Consumptive Use Of Water Studies In The Ashley And Ferron Creek Areas Of Utah, Elden E. Fisher
Consumptive Use Of Water Studies In The Ashley And Ferron Creek Areas Of Utah, Elden E. Fisher
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The inadequacy of water and power supplies in Utah for agriculture, for industry, for domestic and community consumption has retarded the State's economic growth. Shortages of water and hydroelectric power are the principle impediments to the full realization of other potentials of Utah, that is, the full use of its arable lands, the wide and diversified use of its industrial raw materials, and the unrestricted development of its communities. The problem of securing additional sources of water and power has resolved itself into one of major concern. The objective of this study was to determine unit values of consumptive use …
A Study Of The Street Plan Of Logan, Utah, Paul Walter Gottschalk
A Study Of The Street Plan Of Logan, Utah, Paul Walter Gottschalk
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
It is the purpose of this thesis to make a study of the street plan for the City of Logan, Utah, to attempt to analyze its desirable and undesirable features as they affect the community, and to prepare a solution to eliminate, insofar as possible, the undesirable features and preserving the desirable.
Design Of Shallow Wells For Drainage By Pumping, Lewiston Area, Utah, Gregory L. Pearson
Design Of Shallow Wells For Drainage By Pumping, Lewiston Area, Utah, Gregory L. Pearson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
After approximately 25 years of using open drains in the Lewiston Area, Utah, the water table has not changed appreciably from what it was in 1921 when Hart and Adams (4) conducted their drainage investigations. It is still only about three feet below the ground surface. This is not effective drainage, meeting neither of the two primary drainage requirements of an arid or semi-arid agricultural region, namely; preventing an accumulation of excessive water within the depth of soil required for optimum growth of plant root systems, and maintaining the water table at a depth below the ground surface greater than …
The Drainage Problem In The Lewiston Area, Utah, Sterling Davis
The Drainage Problem In The Lewiston Area, Utah, Sterling Davis
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Often where water is artificially applied to land, means must be provided for removal of some of this water. Too much water is just as bad as too little. The increased use of irrigation water in Utah has caused an increased need for drainage. Some irrigated lands are poorly drained. With high water table, yield of crops has been materially decreased, and with present drainage methods only a part of possible production had been attained.
The Drainage Problem In The Draper Area, Utah, Stanley H. Van Orman
The Drainage Problem In The Draper Area, Utah, Stanley H. Van Orman
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
As a rule, in the practice of irrigation, more water is delivered to a project than is used by the plants, evaporated, or removed by natural drainage. It is now generally accepted that, in the West, irrigation and drainage are necessary complementary practices. With comparatively good irrigation practice the efficiency is about 34 percent; that is, approximately one-third or the water is actually used by the crops. With rather poor irrigation practice the efficiency may drop as low as 12 percent.
A Study Of Land Drainage By Pumping From An Experimental Drainage Well In The Delta Area, Utah, Ellaf Arni Olafson
A Study Of Land Drainage By Pumping From An Experimental Drainage Well In The Delta Area, Utah, Ellaf Arni Olafson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Although it is now generally accepted that, in the west, irrigation and drainage are necessarily complementary practices, the realization has been slow in developing. Recent estimates indicate that about 8 million acres of land under irrigation in the 17 western states require drainage. For most irrigated lands a depth to groundwater of at least five to ten feet is desirable. Very high capital as well as annual maintenance costs would be involved in meeting this minimum requirement with the usual types of tile and open drains. Indeed, in most instances it cannot economically be accomplished. The purpose of this study …
Engineering In Traffic Safety In Utah, Donald T. Hunter
Engineering In Traffic Safety In Utah, Donald T. Hunter
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Traffic safety involves accident-free movement of physical entities. It includes all means of transportation and is a function of mobility, an important variable affecting directly the mortality rate and increase of accidents. All transportation groups have coincidentally with or without increase of mobility been attempting to reduce accidents. Those notably succeeding are the shipping, railroad, and airline interests. The operating motor vehicle and pedestrian groups have failed conspicuously.
The early means of attaining a better degree of traffic safety in the motor vehicle and pedestrian groups were based on opinions, and though rational, were incomplete because of the dynamic and …
A Critical Analysis Of Methods Of Securing Basic Irrigation Data Used In Water Right Determinations, A. Alvin Bishop
A Critical Analysis Of Methods Of Securing Basic Irrigation Data Used In Water Right Determinations, A. Alvin Bishop
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Agriculture in the Western United States is almost entirely dependent upon irrigation. Irrigation has transformed the desert lands into fertile, producing valleys. It has made possible communities and settlement areas which would otherwise be impossible. Although the achievements of irrigation have been great, there still remains millions of acres of fertile land that will never be reclaimed because there is not available water.
A Method Of Snow Surveying And Its Application To Forecasting Stream Flow, Leslie Bowen
A Method Of Snow Surveying And Its Application To Forecasting Stream Flow, Leslie Bowen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The value of knowing ahead of time the amount of water to be expected from any given stream before the season is to far spent is a valuable asset.
A Study To Determine The Feasibility Of Irrigating The Lands Included In The Cache Valley Water Conservation District No. 1, I. Donald Jerman
A Study To Determine The Feasibility Of Irrigating The Lands Included In The Cache Valley Water Conservation District No. 1, I. Donald Jerman
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The purpose of this report is to investigate the feasibility of irrigating the lands of the Cache Valley Water Conservation District No. 1. The district, as it now stands, is very much in need of many improvements. The Main canals are now in use and are in a good condition to serve all the lands with the required amount of water, but the few laterals that are now constructed, are in a poor condition, with the remaining laterals yet to be finished.
Before successful irrigation can be practiced, a large portion of the land will require leveling and small areas …
A Study Of The Flow Of Water Over Triangular Weirs And The Determination Of Coefficients Of Discharge For Small Heads, J. Milton Barrett
A Study Of The Flow Of Water Over Triangular Weirs And The Determination Of Coefficients Of Discharge For Small Heads, J. Milton Barrett
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The development of artesian and pumped wells as a source of irrigation water has created the need for a measuring device which will be accurate for small discharges. The thin edged weir has been accepted as one of the most accurate and desirable measuring devices for this work. Three types of weirs are now commonly used: the Rectangular, the Cipolleti, and the Triangular Notch weir. Of these types the triangular notch is probably best suited for small discharges (under 3 second feet). The various formulae for discharge over 90% Triangular weirs have been accurately determined for heads over two tenths …
The Movement Of Ground Water And Its Relation To The Drainage Of Irrigated Lands, Ernest O. Larson
The Movement Of Ground Water And Its Relation To The Drainage Of Irrigated Lands, Ernest O. Larson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
One needs but to review the history of the irrigated projects of the West to see clearly the importance of drainage. Since the passing of the Reclamation Act in 1902, the construction of drainage work by the United States Reclamation Service on seventeen projects located in thirteen western states represents about 12 percent of the expenditures from the Reclamation Fund. The portion for drainage has been spent during the last few years. This work has required an annual expenditure of about $1,000,000 or a total of $8,000,000 to July, 1922(1). The work completed is estimated to have reclaimed …
The Drainage District Movement, Leo K. Homer
The Drainage District Movement, Leo K. Homer
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
It has been recognized down thru the ages that the prosperity of a country could be measured by its agricultural development.