What condition could create backpressure in an irrigation system?

The presence of backpressure in an irrigation system is often linked to the elevation of the system discharge. When water is discharged from a higher elevation, it creates resistance against the flow of water due to the force of gravity. This resistance can lead to backpressure, which is the pressure opposing the desired flow of water in the system. In practical terms, if the outlet of the irrigation system is at a significantly higher point than the water source, or if the system is designed to push water uphill, the backpressure can inhibit the effective distribution of water throughout the system.

While low water levels in the reservoir, the use of non-potable water, and increased air temperature can influence various aspects of an irrigation system, they do not directly create the same conditions that lead to backpressure. Low water levels may reduce flow rate but would not inherently cause pressure build-up. Non-potable water usage relates more to water quality issues rather than pressure dynamics. Increased air temperature can affect evaporation rates and soil moisture but does not directly create backpressure in the irrigation infrastructure.