Underground water that flows through the water table beneath the city is pumped from areas where Buildings basements, garages and roads are lower than Sea Level. This water is continuously pumped and dumped into the river. with a bit of management this water could be used to restore local Salmon and Trout habitats in the Guadalupe and other rivers in the Bay Area. This video demonstrates the available water flow from a few locations on the Guadalupe River.
Roger Castillo