The Santa Ana River Basin’s unseen lifeline, groundwater recharge, is being expanded and enhanced, offering Riverside a beacon of hope for enduring water resilience. The water utilities serving the Santa Ana River Basin area work hard to maintain the groundwater basins underlying the Santa Ana River watershed by regulating the amount of water pumped over time, recharging stormwater runoff, recharging treated wastewater, and, when available, recharging imported water. Far more recharge occurs than most people realize. The figure below shows the location of most of the larger recharge basins in the Santa Ana River watershed.