From http://www.allianceforwaterefficiency.org/Drip_and_Micro-Spray_Irrigation_Introduction.aspx
"The efficiency of overhead irrigation, such as rotors, and pop-up sprayheads is typically 50 percent and rarely exceeds 70 percent. "
From http://www.allianceforwaterefficiency.org/Drip_and_Micro-Spray_Irrigation_Introduction.aspx
"The efficiency of overhead irrigation, such as rotors, and pop-up sprayheads is typically 50 percent and rarely exceeds 70 percent. "