Historically, the Klamath was the third-most important salmon river in the West, after the Columbia and the Sacramento.
Then you have the Great Lakes rivers the Salmon River the most well-known among them that have runs of salmon and steelhead.
Once used by rafters and home to wild salmon, the river now runs in culverts constrained by highway fortifications.
But Mary Getchell, a spokeswoman for the ecology department, said there are uncertainties in linking salmon survival with river flows.
"We should let the people of the Northwest decide the fate of Snake River salmon, " said Scott Faber, a spokesman for American Rivers.
Federal and independent studies have shown that removing four dams on the lower Snake River in Washington state is the best option for saving Snake River salmon.
"No previous study has allowed the evaluation of the impact of hatchery stocking activities on Penobscot river Salmon, " said Chris Lage, a graduate student working with Kornfield on the study.
CNN: Gene study seeks 'wildness' of Atlantic salmon - October 25 1999
And fertiliser-maker Akron is preparing to develop apatite fields in the Khibini mountains, an area used for reindeer grazing above the salmon-rich river system that runs south from Lake Imandra.
If the dams are not removed, new restrictions on logging, fish harvest, shipping channel deepening, and irrigated agriculture would be needed to avoid the extinction of five runs of Snake River salmon and steelhead, the paper says.
Samples in 1999 from fall chinook salmon in the Columbia River's Hanford Reach show that four-fifths of the females spawning there apparently began life as males.
James J Anderson and Chloe Bracis of the University of Washington say the work supports recent modelling studies showing geomagnetic imprinting is feasible to return salmon to their home river.
They have seasonal access to wild-caught (better than farmed) King salmon (larger and more desirable than sockeye) from the Columbia River (one of the greatest salmon locales), and the piece I had, cooked on an alder wood plank, was THE best salmon I have ever tasted.
To try to combat the problem, the agency has twice released better-oxygenated water from Kielder Reservoir into the river in an effort to help salmon move out of the estuary and into the freshwater section of the river.
Our goal: a pool of leaping Atlantic salmon on the wild Castors River.
Removing the dams altogether, which would cool down the river and reduce salmon-infecting parasites, is also being considered but is similarly expensive.
Even the rivers of the Kola peninsula, so heavily promoted by American and British travel companies, now seem under threat, with biologists estimating that poachers kill up to 50% of the salmon run on the Kola River and as much as a third on the Umba, Kharlovka and Rynda.
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But dams, diversions and recent drought have combined to push the spawning salmon population in the Klamath well below the 35, 000-fish threshold deemed necessary for the river to maintain a sustainable salmon population.
Organizations that endorse removing the four lower Snake River dams to save salmon say the resolution is unfair.
Last season the River Erriff yielded 320 salmon and 284 sea trout.
Record numbers of salmon have been recorded in the River Tyne, making it the best river for the species in England and Wales.
Anglers say they continue to have concerns about the impact of the Tees Barrage on stocks of salmon and sea trout in the river.
The spawning habits of the eel is the exact opposite of the other migratory river users - the salmon and the sea-trout which migrate upstream to spawn.
And because there is no way to tell a Klamath-spawned salmon from one from any other river once the fish reach the ocean, the fishery council says it has no choice but to restrict all salmon fishing along 700 miles of coast.
Because of federal dams operating on the Snake River, every species of salmon has been listed for protection under the Endangered Species Act.
The National Marine Fisheries Service and the U.S. Fish and Wildlife Service recently proposed the listing of eight river runs of North Atlantic salmon.
CNN: Gene study seeks 'wildness' of Atlantic salmon - October 25 1999
The LRS said it would also be working closely with the Environment Agency on the project, as the stretch of the River Dee is home to salmon and freshwater mussels.
"It is impossible to reconcile a maximum transport approach to salmon recovery with protection of the remaining diversity of salmon and steelhead populations in the Snake River basin, " the report notes.
Too much spill dissolves too much nitrogen in the river, which can kill migrating salmon.
He was surprised to find that most salmon do not die as they leave the river and enter the sea, as previously believed.
Undamming the Elwha River is expected to boost its salmon population from 3, 000 to 400, 000, which will attract bears, eagles and other wildlife that thrived before the river was dammed in 1914.
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