HELENA, Mont. — A federal appeals court ruling Wednesday will allow construction to begin on a $59 million dam on Montana’s Yellowstone River that wildlife advocates say could doom an endangered ancient fish species.
But the legal fight isn’t over yet, and the U.S. government agency leading the project near the Montana-North Dakota border will wait for a separate court ruling before deciding how to proceed.
“This is an important step to move forward with this project to protect the endangered pallid sturgeon and other fish in the river while continuing to assure that irrigation needs are met,” U.S. Army Corps of Engineers spokeswoman Jamie Danesi said.
The three-judge panel from the 9th U.S. Circuit Court of Appeals ruled Wednesday that the advocacy group Defenders of Wildlife did not prove the project would cause irreparable harm to the river’s pallid sturgeon.
The panel also reversed U.S. District Judge Brian Morris’ temporary block of the project because the appellate judges disagreed with Morris that Defenders of Wildlife was likely to win its lawsuit against the U.S. Army Corps of Engineers.
It’s the second time that the courts have blocked and then ordered the project to go ahead over concerns about whether the 125 remaining pallid sturgeon would be able to swim around the dam to spawn.
Aaron Hall, the Rockies and Plains representative for Defenders of Wildlife, said his organization will still fight to prevent the dam from being built.
“We’re still reviewing things and deciding where to go,” he said.
Still pending is an April 19 court hearing in the lawsuit, when Morris will hear arguments on whether he should rule in favor of the advocacy group without a trial and permanently block the dam.
The long-snouted pallid sturgeon, which evolved from fish that were alive in the age of dinosaurs, are already cut off from their spawning grounds by a wood-and-rock irrigation dam in eastern Montana.
Both the U.S. Army Corps of Engineers and Defenders of Wildlife agree something needs to be done soon if the species is to survive.
But their solutions are very different. The Corps’ project includes a man-made bypass channel for the fish to swim to their spawning grounds. Defenders of Wildlife is concerned that the fish won’t use the bypass channel, and propose to make that section of river free-flowing and install pumps to provide river water for irrigation.