USGS

National Water Conditions

U.S. Geological Survey
Environment Canada Climate Information Branch

OCT 1970 || NOV 1970 || DEC 1970 || JAN 1971 || FEB 1971 || MAR 1971 ||
APR 1971 || MAY 1971 JUNE 1971 || JULY 1971 || AUG 1971 || SEP 1971 ||

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