Sharing Water with Nature

River Ride

  • A fast, smooth ride - safely on their way.

late spring and late summer, juvenile salmon getting a ride to the sea

In the late spring and late summer, juvenile salmon need a quick ride to the sea, spending less than a month in freshwater.

  • A slow rough ride - open to prey
instream water and safe paths

The instream water and safe paths needed may conflict with demands for irrigation withdrawals. What is the solution?

  • When years are dry, fish need not die.
efficient use of water on the farm

Very efficient use of water on the farm will leave enough water to share with fish. Through careful use there is enough water for all.

Flushing Flows

  • A silt covered gravel bed

depleted river deposit

Weak flows in a depleted river deposit fine silt that clogs and covers the stream gravel where salmon nest.

  • The salmon should see "redd" (salmon nest)

Strong flows flushing away the silt

Strong flows flush away the silt, preparing the gravel riffles for the salmon's arrival.

  • A "redd" is a nest, and clean is best!

silty farm runoff

"Best Management Practices" for farming can reduce water diversions and silty farm runoff.

Fish Screen

  • Which is the right way for fish to go?

fish screens

To protect fish and juvenille salmon from swimming into an agricultural canal, fish screens are placed to help them stay on the right path.

  • A fish screen will let them know

natural current

Fish are swept safely past the screen, following the natural current.

  • Fish now go with the right flow

fish in the natural channel

Fish screens allow farm water to flow while keeping fish in the natural channel where they can reach the sea.

 

Last Updated: 12/14/16