USGS

National Water Conditions

U.S. Geological Survey
Environment Canada Climate Information Branch

JAN 1973 || FEB 1973 || MAR 1973 || APR 1973 || MAY 1973 || JUNE 1973 ||
JULY 1973 || AUG 1973 || SEP 1973 || OCT 1973 || NOV 1973 || DEC 1973 ||

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