Simulation Model for Economic Irrigation Project Planning and Design

by R. D. Bliesner, Keller-Bliesner Engineering, United States,
J. Keller, Keller-Bliesner Engineering, United States,
A. A. Keller, Keller-Bliesner Engineering, United States,
M. R. Petersen, Keller-Bliesner Engineering, United States,

Abstract: The principle design parameters considered are: water supply configurations (quantity, source and storage); shapes and sizes of the area to be served; on-farm irrigation techniques; cropping patterns; and system operating procedures. This is because of the complications involved with the many interactions among these variables. The problem is further complicated when stochastic weather and hydrologic data are applied. Therefore, the standard practice for project design is to set values for each of the above design parameters and use average or at best probabilistic weather and hydrologic data. We have developed an irrigation project simulation model which allows rapid analysis of various design alternatives and examines the impact of changes in any parameter on the economic return to the simulated project. This model calculates the benefit/cost, B/C, ratio for any project configuration using historic monthly weather and hydrologic data over the period for which they are available.

Subject Headings: Hydrologic data | Hydraulic design | Simulation models | Parameters (statistics) | Irrigation | Weather forecasting | Economic factors | Hydrologic models

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