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Digital Geologic-GIS Map of the Igo Quadrangle, California (NPS, GRD, GRI, WHIS, IGO digital map) adapted from a U.S. Geological Survey Professional Paper map by Kinkel, Hall and Albers (1956)

Metadata Updated: June 5, 2024

The Unpublished Digital Geologic-GIS Map of the Igo Quadrangle, California is composed of GIS data layers and GIS tables in a 10.1 file geodatabase (igo_geology.gdb), a 10.1 ArcMap (.mxd) map document (igo_geology.mxd), individual 10.1 layer (.lyr) files for each GIS data layer, an ancillary map information document (whis_geology_gis_readme.pdf) which contains source map unit descriptions, as well as other source map text, figures and tables, metadata in FGDC text (.txt) and FAQ (.pdf) formats, and a GIS readme file (whis_geology_gis_readme.pdf). Please read the whis_geology_gis_readme.pdf for information pertaining to the proper extraction of the file geodatabase and other map files. To request GIS data in ESRI 10.1 shapefile format contact Stephanie O'Meara (; see contact information below). Presently, a GRI Google Earth KMZ/KML product doesn't exist for this map. The data were completed as a component of the Geologic Resources Inventory (GRI) program, a National Park Service (NPS) Inventory and Monitoring (I&M) Division funded program that is administered by the NPS Geologic Resources Division (GRD). Source geologic maps and data used to complete this GRI digital dataset were provided by the following: U.S. Geological Survey. Detailed information concerning the sources used and their contribution the GRI product are listed in the Source Citation section(s) of this metadata record (igo_geology_metadata.txt or igo_geology_metadata_faq.pdf). Users of this data are cautioned about the locational accuracy of features within this dataset. Based on the source map scale of 1:24,000 and United States National Map Accuracy Standards features are within (horizontally) 12.2 meters or 40 feet of their actual location as presented by this dataset. Users of this data should thus not assume the location of features is exactly where they are portrayed in ArcGIS or other software used to display this dataset. All GIS and ancillary tables were produced as per the NPS GRI Geology-GIS Geodatabase Data Model v. 2.3. (available at: The GIS data projection is NAD83, UTM Zone 10N. The data is within the area of interest of Whiskeytown National Recreation Area.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources



Metadata Created Date June 1, 2023
Metadata Updated Date June 5, 2024

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date June 5, 2024
Publisher National Park Service
Identifier NPS_DataStore_1044143
Data First Published 2018-09-24T12:00:00Z
Data Last Modified 2018-09-24
Category geospatial
Public Access Level public
Bureau Code 010:24
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Data Quality True
Harvest Object Id 33a39b74-df12-4e69-a359-4e45b432a150
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Homepage URL
Metadata Type geospatial
Old Spatial -122.626823,40.4994,-122.500191,40.6253433
Program Code 010:118, 010:119
Publisher Hierarchy White House > U.S. Department of the Interior > National Park Service
Related Documents
Source Datajson Identifier True
Source Hash cc197e200bbbee801afcdc49270dd92da7b773646978192e53929ddb33ff64d8
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -122.626823, 40.4994, -122.626823, 40.6253433, -122.500191, 40.6253433, -122.500191, 40.4994, -122.626823, 40.4994}
Temporal 2018-09-24T12:00:00Z/2018-09-24T12:00:00Z

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