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2012 Map of La Porte

Name: 2012 Topographic Map of La Porte
Creator: U.S. Geological Survey
Published: 2012
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2012

About this map

La Porte and the surrounding Sierra County mining districts are documented in this 2012 study, where the landscape is defined by a dense network of ravines and historical settlements. The town of Gibsonville sits at the northern end of Gibsonville Ridge, while the eastern side of the quadrangle shows the remote locations of Howland Flat and Potosi along Potosi Cr. This area is notable for its numerous named flats and ravines, such as Spanish Flat and Deadwood Ravine, reflecting a geography heavily shaped by gold-era operations.

Legacy landmarks including the Saint Louis Cem near Saint Louis and the Thistle Shaft provide specific points of interest for historical research. Water management remains central to the area's layout, from the expansive Little Grass Valley Reservoir to the complex drainages of Slate Cr and its various branches. The presence of Port Wine and Queen City along the Port Wine Ridge Rd illustrates the enduring footprint of established mountain camps in this part of the northern Sierra.