USGS

National Water Conditions

U.S. Geological Survey
Environment Canada Climate Information Branch

JAN 1971 || FEB 1971 || MAR 1971 || APR 1971 || MAY 1971 || JUNE 1971 ||
JULY 1971 || AUG 1971 || SEP 1971 || OCT 1971 || NOV 1971 || DEC 1971 ||

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