Baby steelhead swimming down the San Joaquin River might have a better chance of reaching the ocean this spring, after state and federal agencies agreed to install a rock barrier at the head of Old River, near Lathrop.

Typically, fish heading down the San Joaquin toward Stockton make a left turn into Old River, which draws them into the south Delta and perilously close to enormous pumps that send water to distant reaches of California.

The rock barrier will keep those fish in the San Joaquin, hopefully steering them away from the pumps.


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