Founders Grove on the Bull Creek flood plain was within purchased in 1931 by the Save the Redwoods League . Timber on land upslope of Founders Grove was harvested in 1947 . Heavy rains in December 1955 washed soil , rocks , and debris from the deforested slopes ; and this debris flood felled three hundred trees with trunks more than in diameter within the downslope grove . Four hundred more large trees were felled from the grove by the Christmas flood of 1964 . Most of the remainder of the Bull Creek watershed was subsequently purchased by Save-the-Redwoods League to encourage upslope forest management practices more similar to natural processes
Christmas flood of 1964
Christmas flood of 1964
Bull Creek (Humboldt County)