Method for Analyzing Field Scale Surface Irrigation Uniformity

Abstract

This paper presents a method for describing and evaluating some of the major factors that cause nonuniformity in surface irrigation systems. Methods including the following are presented for statistically combining these effects: variations in opportunity times (e.g., caused by nonparallel advance and recession curves), variations in soil infiltration properties, variations in land grading, and variations in advance rates. A simulation model is used to test the derived equations for a typical example.