20240416 09032400 1.0 TRUE San Anselmo Slope Stability Polygons showing an interpretation of the relative stability of upland slopes in the Town of San Anselmo, in the upper Ross Valley, Marin County CA. Digitized from a georectified scan of the 1976 Smith Rice Strand map STABILITY SLOPES IN THE UPPER ROSS VALLEY, hosted on MarinMap's server. Original 1976 map scale of 1:12,000. Digitization at 1:2,400 or smaller. Precision of the original 1976 map and the georectification unknown. Theodore C. Smith, Salem J. Rice and Rudolf G. Strand (1976). Digitization N. Salcedo (2023)