League City’s afternoon onshore wind knocks spray sideways. Homeowners replace nozzles, then valves, then the controller — and the zone was fine at 6 a.m. Walk the yard at dawn before you assume a dead zone.
If it is still a stream at dawn, that is mineral crust or a failed rotor (common on Magnolia Creek and South Shore). If one head is down and the rest are up, that is a head or a local lateral, not the valve. League City sprinkler repair includes a filter add-on when MUD water keeps scoring nozzles. Book via sprinkler repair if you want us to walk it.