The Agency operates the Little San Gorgonio Creek Recharge Facility, on Orchard Street in Cherry Valley. The facility includes six ponds in which State Project Water is placed to percolate into the ground to recharge the Beaumont groundwater basin. The facility was partially funded by a Prop 13 grant from the State of California and the Santa Ana Watershed Project Authority. State Project Water is pumped to the facility via the East Branch Extension. The Cherry Valley Pump Station, located at the corner of Orchard Street and Taylor Street, is the terminal pump station on the Extension.

The East Branch Extension begins at Devil Canyon Power Plant in San Bernardino (near the Cal State, San Bernardino campus) and traverses the cities of San Bernardino, Highland, and Yucaipa before crossing into Riverside County. It then traverses the City of Calimesa and the community of Cherry Valley before ending near the intersection of Orchard Street and Noble Street.