Tecate Divide crests this high-elevation landscape in eastern San Diego County, marking a significant topographical transition between the Pacific and desert watersheds. The settlement of Boulevard and the surrounding community of Live Oak Springs are situated along the historic corridor of Old Highway 80, which remains a primary artery for the region alongside modern routes. Local heritage is centered around established landmarks such as the Saint Carmel Cem near Hill Valley, and the rural outposts of Manzanita and Calexico Lodge. The terrain is characterized by a series of prominent peaks, including Goat Mountain, Old George Mountain, and Music Mountain, which tower over drainages like Walker Cr and Boundary Cr. These features, along with the notable presence of Lark Canyon and Tule Lake, define a landscape shaped by both the high-desert environment and the transportation networks that connect these remote mountain communities.
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This is the sole edition of this map. No revisions or reprints were ever made.
1931 · Carrizo
USGS Topo · 1:125,000
1939 · Campo
USGS Topo · 1:62,500
1939 · Jacumba
USGS Topo · 1:62,500
1942 · Campo
USGS Topo · 1:62,500
1942 · Carrizo Mtn
USGS Topo · 1:62,500
1942 · Jacumba
USGS Topo · 1:62,500
1942 · Cuyapaipe
USGS Topo · 1:62,500
1950 · San Diego
USGS Topo · 1:250,000
1954 · San Diego
USGS Topo · 1:250,000
1955 · San Diego
USGS Topo · 1:250,000