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Digital Collections at BYU
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ART I. INTRODUCTION
A. Legislative Requirements
Presented herein is the second progress report on Quality of Water in the Colorado River Basin. The first report dated January 1963 was limited principally to the Upper Colorado River Basin...
2008-10-01
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INTRODUCTION
C. Cooperation
This report has been prepared by the Bureau of Reclamation. The Geological Survey contributed considerable basic data and reviewed the technical aspects of the report. A continuing cooperative program between the...
2008-10-01
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PART II. DESCRIPTION OF BASIN
The upper or northern portion of the Colorado Rifer Basin in Wyoming and Colorado is a mountainous plateau 5»000 to 8,000 feet in elevation marked by broad, rolling valleys, deep canyons, and intersecting mountain...
2008-10-01
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DESCRIPTION OF BASIN
The new reservoirs recently constructed or under construction above Lees Ferry (Lake Powell, Flaming Gorge, Navajo, Morrow Point, and Blue Mesa), together with Lake Mead downstream, have resulted in some major changes in the...
2008-10-01
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DESCRIPTION OF BASIN
C. Climate
The Colorado River Basin has climatic extremes, ranging between year-round snow cover and heavy precipitation on the high peaks of the Rocky Mountains to desert conditions with very little rain in the southern...
2008-10-01
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DESCRIPTION OF BASIN
desert willows are found along desert streams with mesquite and creosote bush or catclaw and paloverde. In recent years many river channels have been overrun with tamarix or salt cedar to the extent that a large volume of...
2008-10-01
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DESCRIPTION OF BASIN
Lake Mohave, the reservoir formed by Davis Dam, backs water at high stages about 67 miles upstream to the tailrace of Hoover Powerplant. Storage in Lake Mohave is used for some reregulation of releases from Hoover Dam, for...
2008-10-01
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PART III. HISTORY OF DEVELOPMENT
A. Acres Irrigated Prior to Colorado River Storage Project Authorization
A study of the irrigated acreage in the Upper Basin shows that about 800,000 acres were irrigated by 1905. Irrigation development took...
2008-10-01
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HISTORY OF DEVELOPMENT
because not all of the diverted water is gaged and practically none of the return flow is measured.
As water exported from the Upper Basin during the same period averages about 315*000 acre-feet, the estimated average Upper...
2008-10-01
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HISTORY OF DEVELOPMENT
2. Mexican Treaty
The treaty with Mexico, signed in 19hh > provides basically for an annual delivery by the United States to Mexico of 1,$009000 acre-feet of Colorado River water.
3* Upper Colorado River Basin Compact...
2008-10-01
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PART IV. AUTHORIZED DEVELOPMENT
A. Acres to be Developed
About 212,000 acres of new land to be irrigated within the Upper Colorado River Basin under the recently authorized projects considered in this report represent an increase of about 15...
2008-10-01
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AUTHORIZED DEVELOPMENT
C. Economic Impact
The impact of the authorized storage units and participating projects on the economy of the Upper Basin is highly significant and increasingly evident as construction work proceeds and reservoirs are...
2008-10-01
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AUTHORIZED DEVELOPMENT
Water from the Dixie project will improve and stabilize economic conditions in southwestern Utah, and electrical energy from the potential Marble Canyon and Bridge Canyon projects will further enhance economic
2008-10-01
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PART V. BASIC STUDIES
A. Procedures
Studies of past and future effects of storage and irrigation projects on the quality of water downstream depend primarily on records of stream-flow and quality of water collected before the project was...
2008-10-01
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BASIC STUDIES
used in this report applies to dissolved solids picked up in addition to favorable salt balance conditions.
Studies conducted thus far indicate that there is much variation in the amount of pickup from irrigated land. For...
2008-10-01
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BASIC STUDIES
monthly concentrations occur in isolated instances in the flow and quality tables for the other stations.
A brief resume of the source and method of derivation for each of the records shown on Figure No. 1 and in Tables No. 1 to No....
2008-10-01
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BASIC STUDIES
San Rafael River near Green River, Utah
Correlations were used to estimate flow at this gage from 19^1 to 19^5 after which measurements of flow were taken (Table No. 6). Quality sampling was begun in 19*+6 and is complete for the...
2008-10-01
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BASIC STUDIES
Colorado River at Imperial Dam, Arizona-California
Discharge figures are available for the study period. Those from October 19^2 through'September i960 are based on the combined records of discharge obtained at gaging stations on...
2008-10-01
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BASIC STUDIES
D. Special Studies
Special quality of water studies have been made in a number of irrigated areas to determine storage and irrigation effects on water quality. Sufficient quality data have been collected by the Bureau of...
2008-10-01
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BASIC STUDIES
Eden^Project
Ac.-ft. Total Total Differ- Tons/
Year or tons inflow outflow ence Acres acre
1955 A.F. ~53%^00 19,700 56,800 33,700 ^5,500
Tons 11,300 67,800 8,700 5.2
1956 A.F. 21,100 61,600 46,700
Tons 19,200 k2>kOQ 8,600...
2008-10-01
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BASIC STUDIES
LaPlata River between State Line and Farmington
Ac.-ft.
or tons Acre-feet Tons
Inflow 26,000 14,000
Outflow
22,000"
23,000
Differ-
ence__ 4,000
9,000
Acres irrigated
9,000
Tons/ acre
1.00
Lands in the lower LaPlata drainage area have...
2008-10-01
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BASIC STUDIES
Florida Project, Colorado
Pickup Loss
Ac .-ft. Differ- tons/ tons/
Year or tons Inflow Outflow ence acre. acre
1958 A.F. 99,800 14,315 90,3£o~ 9,440
Tons 15^70 +1,155 0.08
1959 A F 28,260 14,300 13,960
Tons 4,900 J+,365...
2008-10-01
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BASIC STUDIES
Considerable variation in the effects of irrigation return flow on water quality is to be expected. Differences arise due to the size of the irrigated areas, the number of times the return flow is reused, properties of the soils...
2008-10-01
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