
On Friday, January 10, the Bureau of Reclamation issued an order to reduce water releases on the American River below Nimbus Dam from 2,500 cfs to 2,000 cfs at a time when fall Chinook salmon eggs are incubating in the redds (nests), a critical period in the life cycle of the species.
The Reclamation spokesperson cited storage conservation in Folsom Lake as the reason for reducing flows.
Over the past 18 years, salmon runs on the American River, the crown jewel of the Sacramento area, have declined dramatically from a record run of over 150,000 fish in 2003 to relatively small numbers in the past few years. In only one year since 2005 did the run exceed 50,000 fish.
The cut in flows may result in the dewatering of salmon redds (nests) and the stranding of salmon fry in pools, according to salmon advocates. The dropping of flows may also adversely impact steelhead that are now spawning in the river.
The memo from Reclamation states:
Please make the following release changes to the American River at Nimbus:
Date Time From (cfs) To (cfs)
01/15/20 0100 2,500 2,400
01/15/20 0200 2,400 2,300
01/15/20 0300 2,300 2,200
01/15/20 0400 2,200 2,100
01/15/20 0500 2,100 2,000
Salmon advocates responded with dismay to the change in flows, arguing that this wouldn't be good for American River salmon and eggs now incubating in their nests on the river.
Felix Smith, Board Member of the Save the American River Association and the federal whistleblower.