The Washington Department of Fish & Wildlife said the fish are yellow perch, which are common in the lake.

If upwelling starts a month earlier than usual, the amount of oxygen, already low, has to last until the fall when storms promote mixing which adds oxygen back into the system. As of late September this year, upwelling is still occurring and low levels of oxygen are still persisting.

For the first time in Seattle’s history, temperatures spiked above 100 degrees two days in a row, with residents scrambling to find relief — and flocking to beaches, parks and...

Moss balls imported from Ukraine to pet shops in the United States have been found to house the invasive Zebra mussel. Once in bodies of water, this mussel reproduces rapidly and wreaks havoc on ecosystems.

Some 22,950 sockeye were counted at Ballard’s Hiram Chittenden Locks in 2020, but only about 3,000 made it to the mouth of the Cedar. Another 40 to 50% of those fish typically die on the spawning grounds before they can reproduce.A vortex of climate change, urbanization and predators endangers a beloved species.

DES MOINES, Wash. - Drier weather on Wednesday helped to lessen the landslide threat across Western Washington, but another system will be moving in later in the week, increasing the threat by Friday.

All the rain and snow falling in Western Washington bumps up the risk for mudslides and avalanches.

The counts of fall Chinook at Bonneville Dam are 29 percent below preseason forecasts, and ongoing fisheries are approaching the allowable catch limits under the Endangered Species Act (ESA).

The population of endangered killer whales has hit a 30-year-low, numbering only 75 this year.

The biggest challenges for whales is the buildup of toxic chemicals in their bodies and the shrinking runs of Chinook salmon, their primary prey.

NOAA has issued a Winter Storm Warning for the Mt. Rainier area of Washington State for today including Crystal Mountain ski resort. The Winter Storm Warning is calling for 6-10 of snow by 5…

UPDATE 3:55 P.M. With assistance from several supporting agencies, the Kittitas County Sheriff’s Office completed evacuation notices mid-day Saturday in the Roslyn, Ronald and Lake Cle Elum areas.

Multiple groups of transient killer whales were spotted in the waters off Vashon Island Friday, according to the Vashon Hydrophone Project’s Ann Stateler (“Orca Annie”).

After a bat was found near Seattle with deadly White Nose Syndrome, a conservation group has teamed up with cave explorers to find out if B.C.'s bats are also affected. The White Nose fungus can kill 99 or even 100 percent of a population it infects.

Washington State's historic drought is pushing Lakes Washington and Union below the normal annual 20-foot mark for the first time in 28 years, and officials anticipate another foot drop.

The peer-reviewed research published this week in the Public Library of Science suggests that 99% of the orcas studied had photographic evidence of skin lesions. Researchers evaluated photos from nearly 20,000 orca sightings from 2004 to 2016, finding that lesions — often gray patches and gray targets on the orcas' skin — generally became more prevalent over time.