What is the best way to check for uniform coverage in an irrigation system?

The catch-can test is the best method for checking for uniform coverage in an irrigation system because it provides quantitative data on how evenly water is being distributed across the irrigated area. This test involves placing several catch cans or similar containers at various locations throughout the irrigation zone and running the system for a set period. Afterward, the amount of water collected in each container is measured.

By comparing the amounts of water collected, you can identify areas that may be overwatered or underwatered, allowing for adjustments to the system to ensure that all parts of the area receive the appropriate amount of irrigation. This method is particularly effective because it directly measures the output of the system as it operates in real-world conditions.

In contrast, a pressure gauge test primarily measures the system’s pressure, and while it can help identify issues with the operation of the system, it does not provide information about how evenly water is distributed across the landscape. Visual inspection can give some insights into irrigation coverage, but it is subjective and not as reliable as quantitative measurements from the catch-can test. A soil moisture test can indicate water levels, but it does not provide information on the distribution pattern of the irrigation system itself. Each of these alternatives has its own purposes, but for evaluating uniform coverage