The water in the Penobscot River has been about 80 degrees Fahrenheit for the past few weeks — a level that’s less than optimal for Atlantic salmon — but the run of migrating fish is still the best in nine years, with 1,369 salmon being counted as of Monday, July 13. Over the past two weeks, despite those warm water temperatures, 329 salmon have been counted according to Jason Valliere, a marine resource scientist for the Maine Department of Marine Resources’ Division of Sea Run Fisheries and Habitat.