At elevation, irrigation systems face a compressed season. Nights cool quickly, and a single early freeze can damage valves or backflow assemblies if they are still charged with water.
We recommend a clear shutdown sequence: isolate the water source, open low points to drain lateral lines where appropriate, and winterize components per manufacturer guidance—especially sensitive elements like smart controllers and weather sensors.
If you are unsure whether your system was designed with adequate drainage for your slope and soil, a fall walkthrough can catch issues before ice expands in fittings or poly lines. Planning ahead is almost always less costly than spring repairs.