
Bartlett Springs and its neighboring mineral springs define this portion of the northern California Coast Ranges within the Mendocino National Forest. The landscape is characterized by a series of high ridges including Mary Ann Ridge, Spanish Ridge, and Ruppert Ridge, which separate the drainages of Bartlett Cr and the Rice Fork. The topography is dotted with a variety of small clearings known as glades, such as Johnson Glades, Root Glades, and Evans Glade, suggesting a traditional pattern of mountain grazing or homesteading. Transportation is primarily limited to rugged routes like Lake Co. Road (Bartlett Spr) and specialized paths such as the Green Flat Trl, illustrating the isolation of this terrain. High points like Pine Mtn and Goat Rock overlook a network of seasonal and perennial springs, including Newman Springs and Addington Springs, which have long been points of interest in this part of Lake County.
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1922 · Hullville
USGS Topo · 1:62,500
1924 · Bartlett Springs
USGS Topo · 1:62,500
1938 · Lakeport
USGS Topo · 1:62,500
1942 · Bartlett Springs
USGS Topo · 1:62,500
1944 · Bartlett Springs
USGS Topo · 1:62,500
1951 · Lake Pillsbury
USGS Topo · 1:62,500
1951 · Lakeport
USGS Topo · 1:62,500
1951 · Stonyford
USGS Topo · 1:62,500
1957 · Ukiah
USGS Topo · 1:250,000
1958 · Clearlake Oaks
USGS Topo · 1:24,000