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Adobe Reader®  is required to view the landslide maps or geologic report.      getacro.gif (712 bytes)

Maps are provided in PDF format. A large format plotter (minimum 36" width) is required to print these maps at full scale.

GIS data are provided as zipped folders of ESRI export files (.e00) and shapefiles in both Teale Albers (NAD27) and UTM Zone 10 (NAD 83) projections. 

A complete list of landslide maps and  geologic maps by the California Geological Survey is available.

 

DISCLAIMER:

The State of California and the Department of Conservation make no representations or warrantees regarding the accuracy of the data from which these maps were derived. Neither the State nor the Department shall be liable under any circumstances for any direct, indirect, special, incidental or consequential damages with respect to any claim by any user or any third party on account of or arising from the use of these maps.

The identification and location of landslide hazard areas are based on review of limited aerial photographs that are listed on each specific map. In most cases, only two sets of aerial photographs were used to construct the landslide and geomorphic features maps. Due to time constraints all available data were not necessarily reviewed and used in construction of these maps. The quality of data used is varied. The information depicted on the maps has been drawn as accurately as possible at 1:24,000 scale. The maps and reports provided on this web site are subject to change without notice, and the latest available versions will be posted on this web site.

Information on the maps are not sufficient to serve as a substitute for site specific geologic and geotechnical site investigations as required under the Chapters 7.5 and 7.8 of Division 2 of the Public Resources Code.

By DOWNLOADING FILES FROM THE CGS FWGP  WEB SITE,

you acknowledge that you have read THE disclaimer

ABOVE AND THAT YOU ACCEPT ITS CONDITIONS

 

Maps (PDF) 

 

Preview Image Description Scale Download

 


Watershed Mapping Series, Map Set 9, Plate 1, Geologic and Geomorphic Features Related to Landsliding (color), Big River Watershed, Mendocino County, California

(East and West sheets)


1:24,000

 

East: 57"x36"

 

West: 36"x62"

 

 

COLOR PRINT FILE

 


Watershed Mapping Series, Map Set 9, Plate 1, Geologic and Geomorphic Features Related to Landsliding (black-and-white), Big River Watershed, Mendocino County, California

(East and West sheets)

1:24,000

 

East: 57"x36"

 

West: 36"x62"

 B&W PRINT FILES

 


Watershed Mapping Series, Map Set 9, Plate 2, Relative Landslide Potential with Geologic and Geomorphic Features, Big River Watershed, Mendocino County, California

(East and West sheets)

1:24,000

 

East: 62"x36"

 

West: 36"x62"

 RLP PRINT FILES

 

GIS Data

Type Description Scale Download

 

"ReadMe" File

 

Contains helpful information regarding the organization and display of GIS layers

N/A

BIG README FILE


Metadata

Data Dictionary


Text documents describing project background, data processing procedures, data format and attributes for all GIS layers

N/A BIG METADATA
 

BIG DATA DICTIONARY


Landslide

landslides (polygons)
small landslides (points)

narrow landslides (lines)
symbology (lines, used as annotation)
relative landslide potential (grid)

1:24,000

(These are different formats of the same data package)

 

Albers (NAD27) Coverages
 

 

Albers (NAD27) Shapefiles
 

 

 

UTM (NAD83) Coverages
 

 

UTM (NAD83) Shapefiles
 


Geomorphology

debris slide slopes (polygons)

disrupted ground (polygons)
inner gorges
(lines)


Fluvial


stream features
(lines)

 


Geology

geologic units (polygons)

contacts and faults (lines)

structures (lines)

strike & dip and other symbols (points)
shear zones (polygons)

 1:24,000 

 

Documents

Description Download

Compiled document of geologic and fluvial notes, GIS metadata, and data dictionary to accompany maps of geologic and geomorphic features related to landsliding and landslide potential in the Big River Watershed, Mendocino County, California

BIG GEOLOGY DOCUMENT