The cost of pumping irrigation water in central Arizona

Abstract

Irrigation water is a major component of the cost of crop production for farmers In central Arizona. For many, water Is the main factor limiting the size of operation. In order to attain maximum profits, the farmer must have advance knowledge of costs. The cost of pumping water needs to be known to organize farms efficiently, This study attempts to add to the body of knowledge about the farmer's environment to assist In achieving this efficiency. A description of groundwater conditions and pumping Installations gives a cross-sectional look at pumping In central Arizona. Rates and service availability of utilities were exam1ned Cost and physical inventory data were collected from various farmers and complete costs were computed for all components contributing to the cost of pumping water. The importance of these components was indicated and statistical analysis demonstrated the degree of reliability that should be placed in the estimates. Variations of costs between geographical areas were determined. The cost of reusing waste water was examined briefly Use of the results of such a study was illustrated so that it might be useful for individual farmers. Unless a farmer is applying the correct amount of water to his land, he is not obtaining the maximum possible profit. It appears that the cost of pumping water in central Arizona is placing restrictions upon land use.