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Delta Smelt Biological Opinion

Steamboat Slough, in the Bay Delta.

Earthjustice litigation has protected the smelt under the Endangered Species Act, aiding not only smelt, but salmon and rivers as a whole. Delta smelt are an indicator of the health of the Bay-Delta ecosystem, and are representative of a much larger decline in Delta fisheries, including striped bass, longfin smelt, threadfin shad and others.

Brad Zweerink / Earthjustice

Case Overview

In 2008, the U.S. Fish and Wildlife Service declared that water operations in California must be altered to protect the delta smelt from extinction. The Service issued a biological opinion about the effects that the federal and state water projects’ pumping of massive quantities of water from the Delta would have on this threatened species, a small fish that exists only in the Delta. Widely viewed by fish biologists as an indicator of the overall health of the Delta ecosystem, the delta smelt’s population has plummeted in recent years to a tiny fraction of its historic abundance. Studies clearly indicate that increasing diversions of water could lead to the smelt’s extinction and further degrade the Delta’s beleaguered ecosystem. The delta smelt biological opinion requires sufficient quantities of freshwater be allowed to flow through the Delta to promote the survival and recovery of the fish.

In response to legal challenges by a group of politically powerful, highly subsidized large agricultural and commercial water users, a federal district court upheld the 2008 biological opinion’s conclusions that the water projects’ operations jeopardize the imperiled smelt but invalidated some of the bi-op’s specific protective pumping restrictions and other requirements as inadequately supported by the evidence. Because of the “jeopardy” ruling, the court left the protections in place while federal wildlife agencies revise the biological opinions. Earthjustice’s clients joined the federal government in appealing the adverse parts of the lower court’s rulings which were overturned in March 2014.

Faced with a devastating drought, that same group of taxpayer-subsidized agricultural water users have demanded that drought policy cater to their desires while leaving the rest of California high and dry. In 2014, these agencies have succeeded in getting the government agencies charged with safeguarding the environment to waive critical environmental protections, doing great harm to imperiled salmon and the fishing industry which is already overtaxed by the drought. In drastically reducing freshwater flows through the Delta, these waivers also allow salt water to penetrate its myriad channels, degrading drinking water supplies for millions of people who rely upon the Delta for their domestic water. This salt water intrusion also deprives the many farmers in the Delta of suitable water to irrigate their crops, which, ironically, are located in close proximity to the Delta’s channels. Unlike the irrigators in the southern Central Valley, the Delta farmers don’t require giant pumps, miles of canals, and massive amounts of energy to artificially transport that water to distant arid lands.

This case isn't about fish versus farmers. It’s about protecting average citizens, Delta farmers, commercial and sport fisherfolk, and fighting for a healthy Delta ecosystem.

Case ID

1027

Case Updates

April 28, 2014 | Blog Post

Why “Fish Vs. Farmers” Is a False Dichotomy

California water management is not about protecting animals over people. It’s about coddling powerful special interests at the expense of average citizens, Delta farmers, commercial and sport fisherfolk—and a healthy Delta ecosystem.

April 16, 2014 | In the News: Central Valley Business Times

Delta Smelt Gain a Win in Federal Court

A federal court ruled that the U.S. Bureau of Reclamation violated the Endangered Species Act when it approved contracts to pump water out of the Sacramento-San Joaquin Delta to agriculture projects in the Central Valley, as the Delta provides crucial habitat to the endangered delta smelt fish.

March 14, 2014 | In the News: The Daily Republic

Protections of California Delta Smelt Upheld

After extensive scientific review, a federal appeals court upheld a 2008 decision that enacted water restriction on transporting water from the San Joaquin Delta to agricultural farms in the Central Valley to protect the Delta Smelt, an endangered fish.

“At the core of this decision, the 9th Circuit says this [study] is fine, and that at the time that it was finalized the agency had considered the best available science of the Delta smelt.” said Earthjustice attorney, Trent Orr.

February 24, 2014 | Blog Post

A Pear Farm On The Frontlines of California’s Water Wars

Notes from a trip to the San Francisco Bay Delta to hear stories from people who would be directly impacted by aplan to pump massive amounts of freshwater out of the Delta to farms in the southern Central Valley.

June 16, 2011 | Blog Post

Awash In Water and Profits, Cal Growers Denied More

It’s hard to view the recent actions of some big agricultural operations in California’s San Joaquin Valley as anything but hostile to the state’s wildlife. Some of the biggest growers are refusing to take an overflowing allotment of irrigation water as enough and are cluttering up the court system with lawsuits aimed at wringing every last drop of water for themselves, no matter what damage that causes native fish species.