Browsing by Author "Vellidis, G."
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- Assessing the feasibility and potential expansion of large-scale riparian irrigation in VirginiaTaylor, Daniel B.; Ross, Burton Blake; Vellidis, G.; Lanier, Alan B. (Virginia Water Resources Research Center, Virginia Polytechnic Institute and State University, 1985-09)The purpose of this study was to develop a method, using readily available information, for evaluating the feasibility of t he expansion of large scale riparian based irrigation. This report represents the first in a series of reports addressing this issue. Its primary purpose is to document the methods which were employed in the feasibility analysis. Microcomputer irrigation system design models were developed to calculate the annual costs of installing and operating center pivot, traveling gun, big gun, and portable pipe irrigation systems. The information generated by these design models was summarized by estimating a series of equations using ordinary least squares regression techniques. These equations can be employed by planners and policy makers in Virginia to evaluate the potential of future conflicts in riparian water use arising from irrigation. An example using the equations in a benefit-cost analysis was presented for Havover County where it borders the Pamunkey River. It was recommended that this procedure be further refined to increase its flexibility , that data bases be developed for the areas of potential riparian based irrigation, and that the entire evaluation procedure be computerized and made more user friendly to facilitate its use by water use policy makers and planners.
- A methodology for assessing the feasibility of riparian-based irrigation systemsVellidis, G. (Virginia Polytechnic Institute and State University, 1985)A procedure that determines the economic feasibility of irrigation and determines the instantaneous pumping demand and seasonal water use of feasible irrigation systems was developed. A 54 year (1930-1983) precipitation record was used to determine the future probability of drought occurring in a specific location under a given set of conditions in Virginia. Econometric models developed by Taylor, et al. (1985) were used to conduct the economic analysis. Econometric models for various ranges for center pivot, traveling gun, big gun, and portable pipe irrigation systems were utilized in the procedure. The developed procedure was applied to the Pamunkey River area in Eastern Virginia. Projections on cumulative irrigated acreage, pumping capacity, and seasonal water use were produced.