https://www.news4jax.com/news/hundreds- ... -city-lake
https://www.actionnewsjax.com/news/loca ... /787816490
https://lakeokeechobeenews.com/lake-oke ... ople-call/
Refer to Point 5 ... https://www.aquaticsystems.com/blog/fis ... ida-lakes/
Excerpt ... "While we don’t have a definitive answer for the chum die-off on the Koyukuk River, all signs seem to point to heat stress. We found dead chums far above (~100 miles) the Hogatza River, likely ruling out any mining activity. Oxygen content in the river was good everywhere we sampled. Recently washed up chum salmon appeared to be in good condition based on physical appearance - no pus pockets indicating infections, no worms or other parasites, no kidney problems, and no tumors or deformities. By all indications, these were healthy fish.
We counted over 800 dead chum salmon and we know we missed many more that were either difficult to see driving by or had already sank to the bottom. We only saw dead chum salmon in very large numbers in a few places, but we saw dead chum salmon fairly consistently throughout the entire stretch of river we boated (~200 miles). It was a difficult thing to witness.
We saw only two dead pike and no dead kings. This is only afflicting chum salmon (also ruling out pollution in the water).
Talking with local fishermen, they began seeing dead chum about two weeks ago (July 12). Starting July 7, air temperatures on the Koyukuk were around 90 degrees for about four days. That’s 25 degrees above average. The water temperatures were undoubtedly very difficult for migrating chum salmon. "