Supplemental report to energy and water consumption of Pacific Northwest irrigation systems

Abstract

This supplement provides a revised estimate of the design energy and water requirements of various irrigation systems utilized in the Pacific Northwest states of Idaho, Oregon, and Washington. It is intended to provide interested readers information concerning sources of irrigation water, along with the water and energy requirements of the major types of irrigation systems used throughout the region. Revisions were made to update portions of the primary data deck and to correct errors discovered in the original data deck. These revisions have resulted in a reduction in the total regional energy requirements for irrigated agriculture by approximately 7%. Decreases occurred in the states of Idaho and Washington, while Oregon demonstrated an increase. Water requirements for regional irrigated agriculture were increased by 3%; all of this increase occurred in the state of Washington. Slight changes in the acreages irrigated by each type of irrigation system were noted, but are insignificant.