The Sacramento Bee reports state and federal wildlife officials have announced a plan to move hatchery-raised salmon by tanker trucks should the river and its tributaries prove inhospitable for the fish.
Officials fear the rivers could become too shallow and warm to sustain salmon trying to migrate on their own.
They're keeping an eye on conditions and will be ready to implement the plan next month, barring heavy rains.
Salmon from the Coleman National Fish Hatchery on Battle Creek, a tributary of the Sacramento River, are usually released in April and May.
The trucking plan is similar to one carried out in the drought of 1991-92.
There were no changes in the intensity of drought in California over the past week and El Niño is not expected to end the state's historic drought.
California water regulators accuse company of illegally diverting water that is later trucked, bottled, and sold in stores.
The drought is changing the size and flavor of California's fruit.
California's drought is having a devastating effect on its forests. Recent aerial surveys show 20 million dead trees so far. And the drought has a partner in crime -- the pine beetle.
Californians are exceeding Governor Jerry Brown's 25 percent conservation mandate.