Action: Reduce peak flood flows into the river.
In addition to increasing capacity of the river, flood risk can also be improved by reducing the amount of water that enters the LA River at peak flows.
Upstream storage or detention facilities, such as dams, help to store runoff during large storm events and slowly release the water so as not to exceed the downstream channel capacity. Groundwater recharge facilities direct stormwater to spreading grounds, where the water can percolate into the groundwater basins for later use.
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Methods
specific, tangible ways to reach the goal

Sepulveda Basin is an important asset to reduce peak flows on the LA River.
OLIN, 2019.