$5K donation will help school district manage its water resources Town and school officials at Riverhead High School Wednesday to announce the donation from Peconic Green Growth. (Credit: Tara Smith) A donation of new irrigation equipment to the Riverhead Central School District will help curb overwatering and reduce water costs. District and town officials gathered at the high school Wednesday to receive a donation from Peconic Green Growth, an organization that aims to preserve and enhance natural resources through sustainability. Irrigation sensors and controls will be installed at the high school, middle school and Pulaski Street schools. They’ll each be linked to weather stations and onsite moisture sensors that will help avoid overwatering, according to Peconic Green Growth executive director Glynis Berry.