An integrated study of earth resources in the State of California using remote sensing techniques

The author has identified the following significant results. The supply, demand, and impact relationships of California's water resources as exemplified by the Feather River project and other aspects of the California Water Plan are discussed

An integrated study of earth resources in the state of California using remote sensing techniques

University of California investigations to determine the usefulness of modern remote sensing techniques have concentrated on the water resources of the state. The studies consider in detail the supply, demand, and impact relationships

Water rights and related water supply issues

Presented during the USCID water management conference held on October 13-16, 2004 in Salt Lake City, Utah. The theme of the conference was "Water rights and related water supply issues."Includes bibliographical references.Proceedings sponsored by the U.S. Department of the Interior, Central Utah Project Completion Act Office and the U.S. Committee on Irrigation and Drainage.Consensus building as a primary tool to resolve water supply conflicts -- Administration to Colorado River allocations: the Law of the River and the Colorado River Water Delivery Agreement of 2003 -- Irrigation management in Afghanistan: the tradition of Mirabs -- Institutional reforms in irrigation sector of Pakistan: an approach towards integrated water resource management -- On-line and real-time water right allocation in Utah's Sevier River basin -- Improving equity of water distribution: the challenge for farmer organizations in Sindh, Pakistan -- Impacts from transboundary water rights violations in South Asia -- Impacts of water conservation and Endangered Species Act on large water project planning, Utah Lake Drainage Basin Water Delivery System, Bonneville Unit of the Central Utah Project -- Economic importance and environmental challenges of the Awash River basin to Ethiopia -- Accomplishing the impossible: overcoming obstacles of a combined irrigation project -- Estimating actual evapotranspiration without land use classification -- Improving water management in irrigated agricultue -- Beneficial uses of treated drainage water -- Comparative assessment of risk mitigation options for irrigated agricutlrue -- A multi-variable approach for the command of Canal de Provence Aix Nord Water Supply Subsystem -- Hierarchical Bayesian Analysis and Statistical Learning Theory II: water management application -- Soil moisture data collection and water supply forecasting -- Development and implementation of a farm water conservation program within the Coachella Valley Water District, California -- Concepts of ground water recharge and well augmentation in northeastern Colorado -- Water banking in Colorado: an experiment in trouble? -- Estimating conservable water in the Klamath Irrigation Project -- Socio-economic impacts of land retirement in Westlands Water District -- EPDM rubber lining system chosen to save valuable irrigation water -- A user-centered approach to develop decision support systems for estimating pumping and augmentation needs in Colorado's South Platte basin -- Utah's Tri-County Automation Project -- Using HEC-RAS to model canal systems -- Potential water and energy conservation and improved flexibility for water users in the Oasis area of the Coachella Valley Water District, California

An integrated study of earth resources in the state of California using remote sensing techniques

The author has identified the following significant results. The effects on estimates of monthly volume runoff were determined separately for each of the following parameters: precipitation, evapotranspiration, lower zone and upper zone tension water capacity, imperviousness of the watershed, and percent of the watershed occupied by riparian vegetation, streams, and lakes. The most sensitive and critical parameters were found to be precipitation during the entire year and springtime evapotranspiration

An integrated study of earth resources in the state of California using remote sensing techniques

There are no author-identified significant results in this report

Proceedings from the 1992 national conference

Presented at Irrigation and water resources in the 1990's: proceedings from the 1992 national conference held on October 5-7, 1992 in Phoenix, Arizona.Includes bibliographical references.Sponsored by U.S. Committee on Irrigation and Drainage.Interdisciplinary teams for assessing the performance of irrigated agriculture systems -- Putah South Canal remote acoustic water level monitoring and flow measurement -- Decentralized constant-volume control of irrigation canals -- Field manufacture and application of reinforced plastic canal and pipe linings -- Improving channel maintenance methods for Egypt's irrigation systems -- Routing flood water through an irrigation delivery system -- Experience with flexible schedules and automation on pilot projects -- Canal linings used by the Bureau of Reclamation with emphasis on rehabilitation -- The California Farm Water Coalition: telling thirsty Californians why agriculture needs water -- Institutional framework and challenges in management of agricultural water use in South Florida -- Technology transfer lessons from a U.S. water district -- Management of water conservation through irrigation system modernization and rehabilitation -- Artificial recharge of groundwater -- Long-term storage through indirect recharge -- Mitigating agricultural impacts on groundwater through desalination -- Agriculture's impact on water resources in Eastern Europe: Bulgaria, Hungary, and Romania -- How probiotic fertilizers improve irrigation efficiency, buffer salts, and reduce nitrate infiltration into groundwater -- Drought, supply shortages and E.S.A.: can the farmer survive? -- Avoiding pitfalls in canal automation -- AZSCHED computer software for irrigation scheduling -- Determination of irrigated crops consumptive water use by remote sensing and GIS techniques for river basins -- GIS and conjunctive use for irrigated agriculture -- Mapping technology in the '90's for GIS applications to irrigation and drainage

Satellite‐Based Monitoring of Irrigation Water Use: Assessing Measurement Errors and Their Implications for Agricultural Water Management Policy

Reliable accounting of agricultural water use is critical for sustainable water management. However, the majority of agricultural water use is not monitored, with limited metering of irrigation despite increasing pressure on both groundwater and surface water resources in many agricultural regions worldwide. Satellite remote sensing has been proposed as a low-cost and scalable solution to fill widespread gaps in monitoring of irrigation water use in both developed and developing countries, bypassing the technical, socioeconomic, and political challenges that to date have constrained in situ metering. In this paper, we show through a systematic meta-analysis that the relative accuracy of different satellite-based irrigation water use monitoring approaches remains poorly understood, with evidence of large uncertainties when water use estimates are validated against in situ irrigation data at both field and regional scales. Subsequently, we demonstrate that water use measurement errors result in large economic welfare losses for farmers and may negatively impact ability of policies to limit acute and nonlinear externalities of irrigation abstraction on both the environment and other water users. Our findings highlight that water resource planners must consider the trade-offs between accuracy and costs associated with different water use accounting approaches. Remote sensing has an important role to play in supporting improved agricultural water accounting—both independently and in combination with in situ monitoring. However, greater transparency and evidence is needed about underlying uncertainties in satellite-based models, along with how these measurement errors affect the performance of associated policies to manage different short- and long-term externalities of irrigation water use

An integrated study of earth resources in the state of California using remote sensing techniques

The author has identified the following significant results. A weighted stratified double sample design using hardcopy LANDSAT-1 and ground data was utilized in developmental studies for snow water content estimation. Study results gave a correlation coefficient of 0.80 between LANDSAT sample units estimates of snow water content and ground subsamples. A basin snow water content estimate allowable error was given as 1.00 percent at the 99 percent confidence level with the same budget level utilized in conventional snow surveys. Several evapotranspiration estimation models were selected for efficient application at each level of data to be sampled. An area estimation procedure for impervious surface types of differing impermeability adjacent to stream channels was developed. This technique employs a double sample of 1:125,000 color infrared hightflight transparency data with ground or large scale photography

An integrated study of earth resources in the State of California based on ERTS-1 and supporting aircraft data, volume 1

There are no author-identified significant results in this report

USCID 14th technical conference

Presented at Contemporary challenges for irrigation and drainage: proceedings from the USCID 14th technical conference on irrigation, drainage and flood control held on June 3-6, 1998 in Phoenix, Arizona.Metering of farm water deliveries in the Imperial Irrigation District has always been a costly and difficult procedure. Due to existing structural and environmental conditions, many of the traditional methods of metering deliveries had in the past proved cumbersome or unsuccessful. With funding provided by the IID/MWD Water Conservation Program, a method for utilizing ultrasonic transducers for metering farm water deliveries under orifice flow conditions has been developed. These on-farm water level sensors were designed to be portable, environmentally rugged, solar powered, simple to operate and maintain, and visually unobtrusive to minimize vandalism. This paper describes the construction of the on-farm water level sensors and their function as a useful tool in providing rapid and accurate irrigation evaluations to farmers