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Full-Text Articles in Engineering
Gis Mapping For Irrigation District Rapid Appraisals, Daniel Howes, Charles M. Burt, Stuart W. Styles
Gis Mapping For Irrigation District Rapid Appraisals, Daniel Howes, Charles M. Burt, Stuart W. Styles
Stuart W. Styles
Geographic information system (GIS) mapping is slowly becoming commonplace in irrigation districts as the need for more accurate and organized data becomes increasingly important. The Irrigation Training and Research Center (ITRC) at California Polytechnic State University, San Luis Obispo commonly uses GIS as a tool in technical assistance packages for irrigation districts. One of the challenges in developing a strategic irrigation district modernization plan is to organize spatial data in such a way that various options can be easily understood. ITRC uses a combination of commercially available software with web-downloadable maps and photographs to organize and present the spatial information. …
Subsurface Flows Water Balance Components For Irrigation Districts In The San Joaquin Valley, Stuart W. Styles, Charles M. Burt
Subsurface Flows Water Balance Components For Irrigation Districts In The San Joaquin Valley, Stuart W. Styles, Charles M. Burt
Stuart W. Styles
Cal Poly ITRC has conducted several water balances for regions or districts within the San Joaquin Valley. In each case, the greatest unknown component for the water balance is subsurface flows (ITRC, 1994). Water balance calculations can be confusing, especially in districts where there is groundwater pumping. This paper will discuss ITRC efforts to determine both lateral and vertical components of subsurface flow, the accuracy of the estimates, and the impact upon the accuracy of the final estimates of irrigation district or regional irrigation efficiencies.
Doppler Flow Meters For Turnouts, Stuart W. Styles
Doppler Flow Meters For Turnouts, Stuart W. Styles
Stuart W. Styles
Irrigation districts, farmers and other agricultural and environmental water users need reliable and low-cost flow meters with integrated dataloggers to measure water velocity and depth with a high level of precision. The Irrigation Training and Research Center has undertaken a performance review of advanced electronic flow measurement technologies in irrigation applications. Examples are the Unidata STARFLOW and the MACE AgriFlo Ultrasonic Doppler Meters.