2022 Map of Big Swamp
USGS Topo · Published 2022About this map
Big Swamp and the surrounding Big Valley basin dominate this landscape along the border of Modoc and Lassen Counties. The topography is defined by the complex water systems of the Ash Creek drainage and the Big Valley Canal, which support the protected marshes of the Ash Creek Wildlife Area. The map reveals a region managed for both conservation and historical ranching, with the Modoc National Forest occupying the northeastern ridges like Barber Ridge.
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Map Details
Editions of this 2022 Big Swamp Map
This is the sole edition of this map. No revisions or reprints were ever made.
Other maps of this area
1886 · Alturas
USGS Topo · 1:250,000
1886 · Modoc Lava Bed
USGS Topo · 1:250,000
1892 · Modoc Lava-Bed
USGS Topo · 1:250,000
1892 · Alturas
USGS Topo · 1:250,000
1954 · Alturas
USGS Topo · 1:250,000
1958 · Alturas
USGS Topo · 1:250,000
1961 · Canby
USGS Topo · 1:62,500
1961 · Bieber
USGS Topo · 1:62,500
1962 · Alturas
USGS Topo · 1:250,000
1962 · Crank Mountain
USGS Topo · 1:62,500