27 JULY 1998. WASHINGTON,
OREGON: SALMON " On July 27, 1998, the daily average temperatures of water
at Bonneville and McNary Dams on the Columbia River were 74 degrees, well
in excess of the 68 degrees required by state and federal regulations.
Meanwhile, the daily average temperature reached 72 degrees at Ice Harbor
Dam on the Snake River. [Assoc Press]" (salmon require cooler waters for
survival) AND "Salmon in Hot Water. Between July 11 and July 14, 1998,
about 4% of the 1 million fall chinook salmon juveniles passing through
the collection system at McNary Dam died, likely from conditions related
to elevated water temperatures. On July 27, 1998, the daily average temperatures
of water at Bonneville and McNary Dams on the Columbia River were 74 degrees,
well in excess of the 68 degrees required by state and federal regulations.
Meanwhile, the daily average temperature reached 72 degrees at Ice Harbor
Dam on the Snake River. [Assoc Press]"-John Field <John.Field@mail.house.gov
VIA Scientific forum on fish and fisheries FISH-SCI@SEGATE.SUNET.SE
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1997 El Niño/Southern Oscillation (ENSO 97-98)