How is groundwater replenished?
Groundwater basins can be replenished naturally and artificially when water from the surface is allowed to seep into the soil. The Mission Creek Subbasin is naturally replenished from the Mission Creek drainage with some subsurface flow also occurring from Desert Hot Springs Subbasin to the north. Water agencies in the Mission Creek Subbasin also artificially replenish the groundwater with imported water that is pumped into what are known as “recharge ponds” and allowed to seep into the ground.