10,000+ results returned
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Title: Marin Crossings (Raster Image)
Contributors:- Not specified
- 2022
Summary: This layer is a georeferenced image of a map showing crossings between Marin County and the San Francisco Bay Area. The original map appeared in "San Francisco-Marin Crossing," published in 1967 by the California Division of Bay Toll Crossings. A scanned version of this map was georeferenced as part of the Imagined San Francisco project. This project traces the history of urban planning in San Francisco, placing special emphasis on unrealized schemes. Rather than using visual material simply to illustrate outcomes, Imagined San Francisco uses historical plans, maps, architectural renderings, and photographs to show what might have been. By enabling users to layer a series of urban plans, the project presents the city not only as a sequence of material changes, but also as a contingent process and a battleground for political power. Savvy institutional actors--like banks, developers, and many public officials--understood that in some cases to clearly articulate their interests would be to invite challenges. That means that textual sources like newspapers and municipal reports are limited in what they can tell researchers about the shape of political power. Urban plans, however, often speak volumes about interests and dynamics upon which textual sources remain silent. Mortgage lenders, for example, apparently thought it unwise to state that they wished to see a poor neighborhood cleared, to be replaced with a freeway onramp. Yet visual analysis of planning proposals makes that interest plain. So in the process of showing how the city might have looked, Imagined San Francisco also shows how political power actually was negotiated and exercised. California. Division of Bay Toll Crossings. (2022). Marin Crossings (Raster Image). Stanford University. Center for Spatial and Textual Analysis. Available at: http://purl.stanford.edu/mj633mx8023 This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
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Title: Southern Crossing and Approaches (Raster Image)
Contributors:- Not specified
- 2019
Summary: This raster dataset is a georeferenced image of the San Francisco Bay showing southern crossings, originally contained in the "Report to Department of Public Works on the southern crossing of San Francisco Bay," This report was originally created by the California Division of Bay Toll Crossings in October 1956. A scanned version of this map was georeferenced as part of the Imagined San Francisco project. This project traces the history of urban planning in San Francisco, placing special emphasis on unrealized schemes. Rather than using visual material simply to illustrate outcomes, Imagined San Francisco uses historical plans, maps, architectural renderings, and photographs to show what might have been. By enabling users to layer a series of urban plans, the project presents the city not only as a sequence of material changes, but also as a contingent process and a battleground for political power. Savvy institutional actors--like banks, developers, and many public officials--understood that in some cases to clearly articulate their interests would be to invite challenges. That means that textual sources like newspapers and municipal reports are limited in what they can tell researchers about the shape of political power. Urban plans, however, often speak volumes about interests and dynamics upon which textual sources remain silent. Mortgage lenders, for example, apparently thought it unwise to state that they wished to see a poor neighborhood cleared, to be replaced with a freeway onramp. Yet visual analysis of planning proposals makes that interest plain. So in the process of showing how the city might have looked, Imagined San Francisco also shows how political power actually was negotiated and exercised. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
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Title: Proposed Southern Crossings of San Francisco Bay (Raster Image)
Contributors:- Not specified
- 2019
Summary: This raster dataset is a georeferenced image of "Proposed Southern Crossings of San Francisco Bay," originally contained in the "Report to Department of Public Works on the southern crossing of San Francisco Bay," This report was originally created by the California Division of Bay Toll Crossings in October 1956. A scanned version of this map was georeferenced as part of the Imagined San Francisco project. This project traces the history of urban planning in San Francisco, placing special emphasis on unrealized schemes. Rather than using visual material simply to illustrate outcomes, Imagined San Francisco uses historical plans, maps, architectural renderings, and photographs to show what might have been. By enabling users to layer a series of urban plans, the project presents the city not only as a sequence of material changes, but also as a contingent process and a battleground for political power. Savvy institutional actors--like banks, developers, and many public officials--understood that in some cases to clearly articulate their interests would be to invite challenges. That means that textual sources like newspapers and municipal reports are limited in what they can tell researchers about the shape of political power. Urban plans, however, often speak volumes about interests and dynamics upon which textual sources remain silent. Mortgage lenders, for example, apparently thought it unwise to state that they wished to see a poor neighborhood cleared, to be replaced with a freeway onramp. Yet visual analysis of planning proposals makes that interest plain. So in the process of showing how the city might have looked, Imagined San Francisco also shows how political power actually was negotiated and exercised. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
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Title: San Francisco Bay Toll-Bridge Company comparative route map
Contributors:- Not specified
- 1926
Summary: Date from ancillary map: "based upon 1926 official census ..."; Includes chart comparing routes and ancillary map: Traffic density chart.; On verso: [General view of the San Francisco Bay area and the Sacramento and San Joaquin Valleys]. 19 x 20 centimeters, on sheet 36 x 43 centimeters, folded to 36 x 22 centimeters
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Title: 2-Meter Bathymetric Slope Grid: North-Central Monterey Bay, 2009
Contributors:- Raster data
- 2010
Summary: This raster dataset is a 2-meter digital bathymetric slope grid containing data for the North-Central Monterey Bay region of California. The survey for North-Central Monterey Bay was conducted conducted on September 3, 5-11, 2009; October 21-23, 2009; November 1, 3, 5-6, 8-12, 2009. This layer was created as part of the California Seafloor Mapping Project. Marine data offered here represent the efforts of a comprehensive state waters mapping program for California launched by the California State Coastal Conservancy, Ocean Protection Council, Department of Fish and Game, and the NOAA National Marine Sanctuary Program. The ultimate goal is the creation of a high-resolution 1:24,000 scale geologic and habitat base map series covering all of California's 14,500 km2 state waters out to the 3 mile limit, and support of the state's Marine Life Protection Act Initiative (MLPA) goal to create a statewide network of Marine Protected Areas (MPAs). This statewide project requires, involves and leverages expertise from industry, resource management agencies and academia. The tiered mapping campaign involves the use of state-of-the-art sonar, LIDAR (aerial laser) and video seafloor mapping technologies; computer aided classification and visualization; expert geologic and habitat interpretations codified into strip maps spanning California's land/sea boundary; and the creation of an online, publicly accessible data repository for the dissemination of all mapping products. Seafloor Mapping Lab. (2009). 2-Meter Bathymetric Slope Grid: North-Central Monterey Bay, 2009. Seafloor Mapping Lab. Available at: http://purl.stanford.edu/yg428kz6108 Bathymetry products are presented according to standard California State Mapping Project specifications, including depth-dependent resolutions of 2m for data from the 0-85m depth range, 5m for 80-250m depth range, and 10m for depths of 230-1500m. A comprehensive 5m data set was produced for the total survey coverage only if per block data exceeded 85m depth and 5m resolution products were included. MBES and side scan data for the South Monterey Bay region were acquired using a 200 KHz/ 400 KHz Reson 7125 sonar aboard the R/V VenTresca by the Seafloor Mapping Lab at California State University Monterey Bay. Prior to data collection, a series of planned survey lines were created using the survey navigation and planning software Hypack 2008 from Hypack, Inc. An Applanix POS/MV 320 v4 system was used to provide position and attitude data during data collection and accounted for vessel motion such as heave, pitch, and roll (position accuracy ± 2m, pitch, roll and heading accuracy ±0.02°, heave accuracy ± 5% or 5cm) with input from a Cnav® enabled NAVCON 2050 GPS. KGPS altitude data were used to account for tide cycle fluctuations and sound velocity profiles were collected with an Applied Microsystems SVPlus sound velocimeter. Data acquisition, post-processing, and final products derived from multibeam bathymetry data were handled by the Seafloor Mapping Lab at CSUMB. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
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Title: 10-Meter Digital Elevation Model: Albion River Watershed, California, 1984-2002
Contributors:- Raster data
- 2004
Summary: This raster layer is a 10-meter resolution digital elevation model (DEM) depicting the terrain surface and elevations within the Albion River watershed. These data were generated from 7.5-minute topographic quadrangle maps by the US Geological Survey. This mapping began as part of the North Coast Watershed Assessment Program (NCWAP) which was de-funded by the Legislature in June 2003, the work was subsequently completed in late 2003 and early 2004. The California Geological Survey (CGS) evaluated the geology, fluvial geomorphic characteristics, relative slope stability and geomorphic characteristics within the watershed, and compiled the digital geospatial data described in this document. This mapping and compilation is geared toward providing baseline geologic and geomorphic data to aid in responsible land management, as well as the development of watershed restoration projects, watershed management strategies, and watershed plans. California. Division of Mines and Geology. (2004). 10-Meter Digital Elevation Model: Albion River Watershed, California, 1984-2002. California Division of Mines and Geology. Available at: http://purl.stanford.edu/jg941rj5247 The Albion River watershed is predominantly located on the coastal side of the Mendocino Range, the western-most range of the northern California Coast Ranges Geomorphic Province. The Albion River drains 43 square miles of the Mendocino County coastline. The headwaters are approximately 12 miles inland. The data is a product of the Department of Conservation, California Geological Survey’s (CGS) investigation of landslides and fluvial geomorphology of the Albion River watershed. The investigation was based on interpretation of 1984 and 2000 aerial photos, findings from CGS’s landslide mapping conducted in the early 1980s (Kilbourne, R.T. 1982-84, Manson, M. W. 1984), as well as other sources (McLaughlin, 1997 and Matthews, 2001). Link to this dataset on the California Department of Conservation website as of November 2014: http://www.conservation.ca.gov/cgs/fwgp/Pages/albion.aspx This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
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Title: 10-Meter Hillshade Grid: Albion River Watershed, California, 2004
Contributors:- Raster data
- 2004
Summary: This shaded relief map was derived from the digital elevation model (see "Digital Elevation Model: Albion River Watershed, California, 2004" raster file) file to more accurately depict landscape within the Albion River watershed predominantly located on the coastal side of the Mendocino Range, the western-most range of the northern California Coast Ranges Geomorphic Province. The Albion River drains 43 square miles of the Mendocino County coastline. The headwaters are approximately 12 miles inland. Data portrays landslides, geomorphic features related to landsliding, relative landslide potential, geology, and stream channel geomorphic conditions. The data is a product of the Department of Conservation, California Geological Survey’s (CGS) investigation of landslides and fluvial geomorphology of the Albion River watershed. The investigation was based on interpretation of 1984 and 2000 aerial photos, findings from CGS’s landslide mapping conducted in the early 1980s (Kilbourne, R.T. 1982-84, Manson, M. W. 1984), as well as other sources (McLaughlin, 1997 and Matthews, 2001). This mapping began as part of the North Coast Watershed Assessment Program (NCWAP) which was de-funded by the Legislature in June 2003, the work was subsequently completed in late 2003 and early 2004. The California Geological Survey (CGS) evaluated the geology, fluvial geomorphic characteristics, relative slope stability and geomorphic characteristics within the watershed, and compiled the digital geospatial data described in this document. This mapping and compilation is geared toward providing baseline geologic and geomorphic data to aid in responsible land management, as well as the development of watershed restoration projects, watershed management strategies, and watershed plans. The Albion River watershed is predominantly located on the coastal side of the Mendocino Range, the western-most range of the northern California Coast Ranges Geomorphic Province. The Albion River drains 43 square miles of the Mendocino County coastline. The headwaters are approximately 12 miles inland. The data is a product of the Department of Conservation, California Geological Survey’s (CGS) investigation of landslides and fluvial geomorphology of the Albion River watershed. The investigation was based on interpretation of 1984 and 2000 aerial photos, findings from CGS’s landslide mapping conducted in the early 1980s (Kilbourne, R.T. 1982-84, Manson, M. W. 1984), as well as other sources (McLaughlin, 1997 and Matthews, 2001). Link to this dataset on the California Department of Conservation website as of November 2014: http://www.conservation.ca.gov/cgs/fwgp/Pages/albion.aspx
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Title: Relative Landslide Potential Matrix: Albion River Watershed, California, 1984-2002
Contributors:- Raster data
- 2004
Summary: This raster layer represents relative landslide potentials within the Albion River watershed in Mendocino County, California. These data were generated using a landslide potential matrix prepared by geologists familiar with the study area. The matrix is based on landslide feature type and activity, geomorphic features, geology, and slope found within the watershed. The matrix is included in the data dictionary with the relative landslide potential layer information. This mapping began as part of the North Coast Watershed Assessment Program (NCWAP) which was de-funded by the Legislature in June 2003, the work was subsequently completed in late 2003 and early 2004. The California Geological Survey (CGS) evaluated the geology, fluvial geomorphic characteristics, relative slope stability and geomorphic characteristics within the watershed, and compiled the digital geospatial data described in this document. This mapping and compilation is geared toward providing baseline geologic and geomorphic data to aid in responsible land management, as well as the development of watershed restoration projects, watershed management strategies, and watershed plans. California. Division of Mines and Geology. (2004). Relative Landslide Potential Matrix: Albion River Watershed, California, 1984-2002. California Division of Mines and Geology. Available at: http://purl.stanford.edu/sd935db0706 The Albion River watershed is predominantly located on the coastal side of the Mendocino Range, the western-most range of the northern California Coast Ranges Geomorphic Province. The Albion River drains 43 square miles of the Mendocino County coastline. The headwaters are approximately 12 miles inland. The data is a product of the Department of Conservation, California Geological Survey’s (CGS) investigation of landslides and fluvial geomorphology of the Albion River watershed. The investigation was based on interpretation of 1984 and 2000 aerial photos, findings from CGS’s landslide mapping conducted in the early 1980s (Kilbourne, R.T. 1982-84, Manson, M. W. 1984), as well as other sources (McLaughlin, 1997 and Matthews, 2001). Link to this dataset on the California Department of Conservation website as of November 2014: http://www.conservation.ca.gov/cgs/fwgp/Pages/albion.aspx This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
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Title: Geologic map of the Valyermo quadrangle, Los Angeles County, California
Contributors:- Not specified
- 2002
- Dibblee, T. W. (Thomas Wilson), 1911-2004
- Minch, John A. (John Albert)
- California Division of Mines and Geology
- Thomas W. Dibblee, Jr. Geological Foundation
- Geological Survey (U.S.)
Summary: by Thomas W. Dibblee, Jr.; edited by John A. Minch. Relief shown by contours and spot heights. "Prepared in cooperation with the California Department of Conservation, Division of Mines and Geology; and the U.S. Geological Survey." "Levi F. Noble Honorary Map." "First printing, February 2002". Includes 3 col. cross sections, quadrangle location map, index to adjacent 7.5 minute quadrangles, and index to sources of geology. Includes "pertinent references".
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Title: GIS data for the Watersheds mapping series
Contributors:- Not specified
- 2002
Summary: Contains 10 vector shapefiles as well as preliminary maps of geologic and geomorphic features (landslide maps) compiled from mapping conducted between 1982 and 2001 in the Jackson Demonstration State Forest (JDSF). A preliminary map of landslide potential in the JDSF, based on landslide potential mapping conducted in 2001 in the Noyo river watershed, is included. California Department of Conservation, California Geological Survey. Title from CD cover. Compiled from multiple sources, including published maps and reports. System requirements: Intel Pentium processor or Macintosh Power PC or later with CD-ROM drive; Microsoft Windows 95 OSR2.0, Windows 98SE, Windows Millenium, Windows NT 4.0 wit service pack 5, or Windows 2000, Macintosh OS8 or later; 64 MB RAM for any Windows platform; 16 MB RAM (32 MB recommended) of RAM for Macintosh; 24 MB available hard disk space; Acrobat Reader 5.0 (included on disc) to view the reference images; Arcview or Arcinfo to view GIS data. Graphics files (.gra, .rtl and .pdf formats) for three maps; Arcinfo export files; Arcview shapefiles; metadata files (.rtf and .txt).
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Title: Geologic map of the Burnt Peak quadrangle, Los Angeles County, California
Contributors:- Not specified
- 2002
- Dibblee, T. W. (Thomas Wilson), 1911-2004
- Minch, John A. (John Albert)
- California Division of Mines and Geology
- Thomas W. Dibblee, Jr. Geological Foundation
- Geological Survey (U.S.)
Summary: by Thomas W. Dibblee, Jr.; edited by John A. Minch. Relief shown by contours and spot heights. "Prepared in cooperation with the California Department of Conservation, Division of Mines and Geology; and the U.S. Geological Survey." "John Szakai Honorary Map." "First printing, February 2002". Includes quadrangle location map, index to adjacent 7.5 minute quadrangles, and index to sources of geology. Includes "pertinent references".
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Title: Geologic map of the Lake Hughes and Del Sur quadrangles, Los Angeles County, California
Contributors:- Not specified
- 2002
- Dibblee, T. W. (Thomas Wilson), 1911-2004
- Minch, John A. (John Albert)
- California Division of Mines and Geology
- Thomas W. Dibblee, Jr. Geological Foundation
- Geological Survey (U.S.)
Summary: by Thomas W. Dibblee, Jr.; edited by John A. Minch. Relief shown by contours and spot heights. Geology 1960-1987. "Prepared in cooperation with the California Department of Conservation, Division of Mines and Geology; and the U.S. Geological Survey." "Robert Wallace Honorary Map." "First printing, February 2002". Includes 2 col. cross sections, quadrangle location map, index to adjacent 7.5 minute quadrangles, and index to sources of geology. Includes "pertinent references".
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Title: Geologic map of the Mescal Creek quadrangle, Los Angeles and San Bernardino Counties, California
Contributors:- Not specified
- 2002
- Dibblee, T. W. (Thomas Wilson), 1911-2004
- Minch, John A. (John Albert)
- California Division of Mines and Geology
- Thomas W. Dibblee, Jr. Geological Foundation
- Geological Survey (U.S.)
Summary: by Thomas W. Dibblee, Jr.; edited by John A. Minch. Relief shown by contours and spot heights. "Prepared in cooperation with the California Department of Conservation, Division of Mines and Geology; and the U.S. Geological Survey." "First printing, February 2002". Includes 2 col. cross sections, quadrangle location map, index to adjacent 7.5 minute quadrangles, and index to sources of geology. Includes "pertinent references."
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Title: Geologic map of the Juniper Hills quadrangle, Los Angeles County, California
Contributors:- Not specified
- 2002
- Dibblee, T. W. (Thomas Wilson), 1911-2004
- Minch, John A. (John Albert)
- California Division of Mines and Geology
- Thomas W. Dibblee, Jr. Geological Foundation
- Geological Survey (U.S.)
Summary: by Thomas W. Dibblee, Jr.; edited by John A. Minch. Relief shown by contours and spot heights. "Prepared in cooperation with the California Department of Conservation, Division of Mines and Geology; and the U.S. Geological Survey." "Allan Barrows Honorary Map." "First printing, February 2002". Includes 2 col. cross sections, quadrangle location map, index to sources of geology, and index to adjacent 7.5 minute quadrangles. Includes "pertinent references".
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Title: Relative Landslide Potential: Noyo River Watershed, California, 2000
Contributors:- Polygon data
- 2001
Summary: This polygon shapefile depicts relative landslide potential for the Noyo River Watershed, which lies within the Coast Ranges physiographic province of California. The area is mountainous, with elevations ranging from sea level in the coastal area of the watershed to approximately 2,850 feet in the eastern headwaters portion of the watershed. The majority of the watershed is heavily forested; portions of the extreme western and southeastern portions of the watershed are grass covered. This map set was compiled from multiple sources including published maps and reports, unpublished mapping by the U.S. Geological Survey, aerial photograph mapping, and reconnaissance geologic mapping. Results of Noyo River Watershed Landslide Mapping Project, including geologic and geomorphic features (landslide) maps and landslide potential maps. The maps/data are useful in preparation of Timber Harvesting Plans, and for use by land managers for identifying areas of potentially unstable ground. The maps/data serve as a guide to potential problem areas where more site-specific review is required. California Division of Mines and Geology. (2001). Relative Landslide Potential: Noyo River Watershed, California, 2000. California Division of Mines and Geology. Available at: http://purl.stanford.edu/wr168pd1325 This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
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Title: Landslides (Points): Noyo River Watershed, California, 2000
Contributors:- Point data
- 2001
Summary: Coverage contains landslide data represented as points for the Noyo River Watershed, which lies within the Coast Ranges physiographic province of California. The area is mountainous, with elevations ranging from sea level in the coastal area of the watershed to approximately 2,850 feet in the eastern headwaters portion of the watershed. The majority of the watershed is heavily forested; portions of the extreme western and southeastern portions of the watershed are grass covered. This map set was compiled from multiple sources including published maps and reports, unpublished mapping by the U.S. Geological Survey, aerial photograph mapping, and reconnaissance geologic mapping. Results of Noyo River Watershed Landslide Mapping Project, including geologic and geomorphic features (landslide) maps and landslide potential maps. The maps/data are useful in preparation of Timber Harvesting Plans, and for use by land managers for identifying areas of potentially unstable ground. The maps/data serve as a guide to potential problem areas where more site-specific review is required. California Division of Mines and Geology. (2001). Landslides (Points): Noyo River Watershed, California, 2000. California Division of Mines and Geology. Available at: http://purl.stanford.edu/ff893hy5605 This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
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Title: Geologic map of San Miguel Island, Santa Barbara County, California
Contributors:- Not specified
- 2001
- Dibblee, T. W. (Thomas Wilson), 1911-2004
- Ehrenspeck, Helmut E
- California Division of Mines and Geology
- Thomas W. Dibblee, Jr. Geological Foundation
- Geological Survey (U.S.)
Summary: by Thomas W. Dibblee, Jr. ; edited by Helmut E. Ehrenspeck. Relief shown by contours and spot heights. "Prepared in cooperation with the California Dept. of Conservation, Division of Mines and Geology; and the U.S. Geological Survey." "John J. Woolley Memorial Map." "First printing, April 2001." Includes 4 col. cross-sections, location map, index to sources of geology, 1 stratigraphic column, 2 remote sensing images and 1 air photo mosaic. Text, ill., and ancillary map on verso. Bibliography on verso.
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Title: Geologic Features (Points): Noyo River Watershed, California, 2000
Contributors:- Point data
- 2001
Summary: This point shapefile depicts geologic features including: mines/quarries, outcrops, spring, strikes and dips of bedding, strikes of vertical bedding, and marsh/wet areas of the Noyo River Watershed, which lies within the Coast Ranges physiographic province of California. The area is mountainous, with elevations ranging from sea level in the coastal area of the watershed to approximately 2,850 feet in the eastern headwaters portion of the watershed. The majority of the watershed is heavily forested; portions of the extreme western and southeastern portions of the watershed are grass covered. This map set was compiled from multiple sources including published maps and reports, unpublished mapping by the U.S. Geological Survey, aerial photograph mapping, and reconnaissance geologic mapping. Azimuth of stikes, angle and direction of dips, and angle of dip in degrees are included. Results of Noyo River Watershed Landslide Mapping Project, including geologic and geomorphic features (landslide) maps and landslide potential maps. The maps/data are useful in preparation of Timber Harvesting Plans, and for use by land managers for identifying areas of potentially unstable ground. The maps/data serve as a guide to potential problem areas where more site-specific review is required. California Division of Mines and Geology. (2001). Geologic Features (Points): Noyo River Watershed, California, 2000. California Division of Mines and Geology. Available at: http://purl.stanford.edu/hp569gv0192 This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
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Title: Mapping Symbology: Noyo River Watershed, California, 2000
Contributors:- Line data
- 2001
Summary: This file contains the geologic mapping symbology, such as landslide scarps and direction of movement arrows, as well as prior landslide activity, for the Noyo River Watershed, which lies within the Coast Ranges physiographic province of California. The area is mountainous, with elevations ranging from sea level in the coastal area of the watershed to approximately 2,850 feet in the eastern headwaters portion of the watershed. The majority of the watershed is heavily forested; portions of the extreme western and southeastern portions of the watershed are grass covered. This map set was compiled from multiple sources including published maps and reports, unpublished mapping by the U.S. Geological Survey, aerial photograph mapping, and reconnaissance geologic mapping. Results of Noyo River Watershed Landslide Mapping Project, including geologic and geomorphic features (landslide) maps and landslide potential maps. The maps/data are useful in preparation of Timber Harvesting Plans, and for use by land managers for identifying areas of potentially unstable ground. The maps/data serve as a guide to potential problem areas where more site-specific review is required. California Division of Mines and Geology. (2001). Mapping Symbology: Noyo River Watershed, California, 2000. California Division of Mines and Geology. Available at: http://purl.stanford.edu/pt361ms4705 This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
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Title: Boundaries: Noyo River Watershed, California, 2000
Contributors:- Polygon data
- 2001
Summary: This polygon shapefile displays the boundaries of the Noyo River Watershed, which lies within the Coast Ranges physiographic province of California. The area is mountainous, with elevations ranging from sea level in the coastal area of the watershed to approximately 2,850 feet in the eastern headwaters portion of the watershed. The majority of the watershed is heavily forested; portions of the extreme western and southeastern portions of the watershed are grass covered. This map set was compiled from multiple sources including published maps and reports, unpublished mapping by the U.S. Geological Survey, aerial photograph mapping, and reconnaissance geologic mapping. Results of Noyo River Watershed Landslide Mapping Project, including geologic and geomorphic features (landslide) maps and landslide potential maps. The maps/data are useful in preparation of Timber Harvesting Plans, and for use by land managers for identifying areas of potentially unstable ground. The maps/data serve as a guide to potential problem areas where more site-specific review is required. California Division of Mines and Geology. (2001). Boundaries: Noyo River Watershed, California, 2000. California Division of Mines and Geology. Available at: http://purl.stanford.edu/tx325jh7799 This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.