Bristol Bay Science Assessment Released - Sportsmen Across U.S. Call for Immediate Action

January 15th, 2014

EPA Report: Pebble Mine will Damage $1.5 Billion Bristol Bay Fishery
in spectacular Alaska landscape

Trout Unlimited and Sportsmen Across U.S. Call for Immediate Action

ANCHORAGE, Alaska—The Environmental Protection Agency’s final Bristol Bay Watershed Assessment (BBWA), released today, shows that large-scale mining in the headwaters of the Bristol Bay watershed would immediately cause the loss of 90 miles of salmon spawning waters and be potentially devastating to the entire drainage and its irreplaceable salmon and trout populations.

In light of the final assessment, Trout Unlimited today called on the EPA to immediately protect Bristol Bay from destructive mining. The BBWA was conducted after nine federally recognized tribes, commercial fishermen and sporting interests asked the EPA to use the Clean Water Act to protect Bristol Bay from large-scale mining in the region, including the proposed Pebble Mine. After nearly three years and extensive scientific research based on the mining company’s own development scenarios for Pebble Mine, as well as hundreds of thousands of public comments and two peer reviews, the report establishes a clear scientific foundation for the EPA to protect Bristol Bay.

 “The science is indisputable,” said Chris Wood, president and CEO of TU. “Bristol Bay is the world’s most important wild salmon fishery, and no place for a large-scale industrial mine. The EPA has done its job, and it’s now time for the Obama administration to use its authority under the Clean Water Act to stop the mine and protect the $1.5 billion-per-year fishery.”  

Additionally, Wood said, protecting Bristol Bay is the most important conservation priority for TU and its 153,000 members who work to make trout and salmon fishing better all across the United States.

“Our members understand the importance of this place, and they’ve made the protection of Bristol Bay their top concern,” Wood said. “For our members, and for anglers all across America, this is the wrong mine in the wrong place. It’s as simple as that.”

Sportfishing and the outdoors industry are important parts of Alaska's economy, according to Tim Bristol, director of TU’s Alaska Program.

“The EPA’s assessment makes it clear that the Pebble Mine would deal a huge blow to the sportsman’s paradise we have in Bristol Bay,” Bristol said. “Bristol Bay is the last place you should put a mine like this. The EPA needs to act now to protect Bristol Bay and Alaskan jobs.”

The EPA’s assessment is based on mining scenarios submitted to the Securities and Exchange Commission by the Pebble Limited Partnership’s now sole investor—Northern Dynasty Minerals. It examined the impacts that mining on the scale of the proposed Pebble Mine would have on the Bristol Bay region, which supports 14,000 jobs. Specifically, the assessment found that the Pebble Mine would:

  • Cause the direct loss of up to 94 miles of salmon-supporting streams.
  • Destroy up to 5,350 acres of wetlands, ponds, and lakes in the Bristol Bay region.
  • Alter streamflows of up to 33 miles of salmon-supporting streams, likely affecting ecosystem structure and function.
  • Create a transportation corridor to Cook Inlet crossing wetlands and approximately 64 streams and rivers in the Kvichak River watershed, 55 of which are known or likely to support salmon. Culvert failures, runoff, and spills of chemicals would put salmon spawning areas at risk.
  • Require the collection, storage, treatment and management of extensive quantities of mine waste, leachates, and wastewater during mining and “long after mining concludes.”

Section 404(c) of the Clean Water Act was created to allow the EPA Administrator to prohibit, withdraw, deny or restrict the discharge of dredged or fill materials into the waters of the United States if such discharge “will have an unacceptable adverse effect on municipal water supplies, shellfish beds and fishery areas (including spawning and breeding areas), wildlife, or recreational areas.” EPA may do so “before a permit application has been submitted to the Corps.” The standard for a 404(c) action has already been met and exceeded through the Bristol Bay Watershed Assessment. 

Section 404(c) has been used 13 times; 11 of these have been by republican administrations.  There is strong national support for protecting Bristol Bay from diverse interests, including more than 1,000 hunting and fishing groups and businesses, commercial fishermen in Alaska and across the country, 26,000 retail food stores, 225 chefs and restaurant owners, over 100 jewelers like Tiffany&Co., and religious organizations and leaders.. In a state known for its strong support for resource development, polls show that nearly 60 percent of Alaskans and 80 percent of Bristol Bay residents oppose the Pebble Mine.

Trout Unlimited is the nation’s oldest and largest coldwater fisheries conservation organization dedicated to conserving, protecting and restoring North America’s trout and salmon and their watersheds. Follow TU on Facebook and Twitter, and visit us online at or at