By mid-July the rain can quit for three weeks at a stretch, and lawns on the streets off Oliver go pale while the river keeps rolling past Tonawanda Island as though nothing were wrong. Huron Sprinklers Inc works the water side of lawn care in North Tonawanda — irrigation systems, spring start-ups, head adjustments, midsummer checks and fall blow-outs before the ground locks up. A system tuned right waters grass and not the driveway, and the proof is a yard that stays even and green through the flattest part of the season. Early morning is the hour for it, when pressure is up and the sun has not yet begun pulling the moisture back out. After the first hard freeze the lines sit empty, and the turf goes into winter with roots that spent all summer reaching deep.