USGS

National Water Conditions

U.S. Geological Survey
Environment Canada Climate Information Branch

JAN 1977 || FEB 1977 || MAR 1977 || APR 1977 || MAY 1977 || JUNE 1977 ||
JULY 1977 || AUG 1977 || SEP 1977 || OCT 1977 || NOV 1977 || DEC 1977 ||

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