That's a total of 66,400 sprinkler heads on campus! The water used for irrigation is ditch water - you can learn more about ditch water on this page.

CU estimates savings of $440,000 a year from using ditch water instead of treated City water. All 50,000 sprinkler heads in the CU system are controlled by radio from a computer. A weather station at ...

Water from the West Wailuaiki Stream flows through the Koolau Ditch on Wednesday in East Maui. - The Maui News / CHRIS SUGIDONO photo A trip to the East Maui Irrigation ditch system and ...