Design for Anadromous Fish
The vegetation on riparian floodplains benefits anadromous fish such as Central Valley Chinook salmon and Sacramento Splittail. Overhanging trees and shrubs create Shaded Riverine Aquatic Habitat (SRA). SRA provide helps stabilize water temperatures during the summer. Additionally, these trees and shrubs release nutrients like plant material and insects into the river. This terrestrial source of nutrients is a critical component of aquatic food webs.
Both Chinook salmon and splittail use the riparian vegetated floodplains during prolonged flooding, when water is at bankfull flow. Juvenile fish grow faster on floodplains, because the water temperatures are higher and the food is abundant because of the submerged herbaceous vegetation. Splittail will sometimes spawn in the floodplain, using the terrestrial vegetation to attach their eggs.
(Above) Anadromous Fish Habitat