Does Hand Watering Waste Water if The Course Has an Irrigation System?

Automatic irrigation systems are designed to apply water quickly and efficiently over a large area, with each sprinkler typically covering an area ranging from 120-feet to 180-feet in diameter. Dry spots in the turf often develop that are much smaller than the coverage of the sprinkler, so from a conservation standpoint, it makes much more sense to hand water the small areas that are dry and keep water off the areas that are already sufficiently moist.