Analysis of Technologies for Small Water Systems
The problems encountered when small systems must meet the provisions of the National Primary Drinking Water Regulations are discussed. Among the potential water quality problems that could...
Geothermal Salt Recovery From Evaporating Ponds
The water from geothermal reservoir 'Los Azufres' in Michoacan, Mexico, is characterized by its high content of chloride, silica, borum and arsenic. Due to the...
Impact of Metallic Solders on Water Quality
A description is given of first-draw water testing at residences in a Long Island, N. Y. , water district. Results for heavy metals, particularly lead, leaching from the solder and plumbing...
Boston MDC Experience With Chloramine Disinfection
In May, 1982, as a condition for approval of plans for improvements to the Metropolitan District Commission (MDC) chlorination facility at Norumbega Reservoir, the Massachusetts Department...
Estimating Transmission Losses
Infiltration or transmission losses in ephemeral stream channels are an important part of the water balance in arid and semiarid regions. The governing equations for movement of flood...
Rating Systems to Evaluate Onfarm Water Conservation
The U. S. Department of Agriculture, Soil Conservation Service, concentrates its assistance on modernization of onfarm irrigation systems and improvement of water management to provide...
Effect of Wetted Perimeter on Infiltration in Furrows
Five empirical infiltration equations were evaluated using data from blocked infiltrometer tests with wetted perimeter values ranging from 28 to 49 cm. The results indicate that the Kostiakov...
Water Rights in Heber Valley, Utah
The Heber Valley is an agricultural area in Central Utah which is rapidly converting to recreational seasonal home development. There are many competing demands for the available water...
Proposal for Funding Water Conservation Programs
Programs have been identified which appear to have the potential to conserve significant amounts of water within a large irrigated agricultural area. Losses such as canal seepage, operational...
Development and Management of the Northern Colorado Water Conservancy District
This paper discusses and explains the Northern Colorado Water Conservancy District. The purposes, accomplishments, operation and management, and financing of the District are mentioned....
Optimization of Irrigation Distribution System Operation
The initial phases of the Federal Central Arizona Project (CAP) are nearing completion and in the latter part of this year the long-awaited delivery of Colorado River water will become...
Incorporating Crop Water Use in Drainage Design in Arid Areas
A method of drainage design for use in arid areas was developed by combining procedures proposed by D. B. McWhorter along with plant uptake functions developed by D. W. Grimes and D. W....
Appropriated Water Rights in Utah
The appropriated water rights system used in Utah is discussed. The historical background for establishing this allocation process is reviewed. The process of changing the location and...
Progress in Controlling Subsidence in the Houston Area
The withdrawal of large quantities of groundwater in Harris and Galveston counties of Texas has resulted in a critical subsidence problem, especially in the low lying areas along the coast....
Effects of Saline Water Tables on Corn Irrigation
Hydraulic, weighing lysimeters were used for three years to measure the effect of high, saline water tables on irrigation requirement of corn. For each of the years corn was grown with...
Water Losses from an Irrigation Canal-Ditch-Dugout System
The general limitations of and requirements for accurate determination of water losses from an irrigation distribution system have been identified. A hydrologic water balance technique...
A Practical Means for Estimating Irrigation Canal Seepage Contribution to Agricultural Subsurface Drains
This paper describes a means for estimating canal seepage contribution to nearby agricultural subsurface drains. Canal seepage rate is influenced by a complex of many variables, but the...
Channels and Groundwater: The Hydraulic Connection
Hydraulic connection between surface and groundwater implies that surface water can seep into the ground (transmission losses from open channels, for example) and eventually become or...
Texas Ground Water Law
Groundwater in Texas is generally considered the property of the surface owner, subject to the rule of capture. This English common law standard was developed at a time when the movement...
The Edwards Aquifer in the San Antonio Area
The Edwards Aquifer in the San Antonio area is a highly productive groundwater system consisting of the Edwards Plateau water table aquifer and the Edwards Balcones fault zone artesian...
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