3,554 results returned
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Title: ENTERPRISE_DBO_geology
Contributors:- Polygon data
- 2009
Summary: Marin county-wide geology compiled from four USGS publications and 2004 topographic mapping - Open-File Report (1997) OFR97-456 for Point Reyes and the San Andreas Fault Zone, 1:48000 - Miscellaneous Field Study (2000) MF-2337 for parts of Marin, San Francisco, and Contra Costa counties, 1:75000 - portion of Miscellaneous Field Study (2005) MF-2402 for northernmost Marin and western Sonoma counties, 1:62500 - portion of Scientific Investigations Map (2007) SIM-2956 for eastern Sonoma county, 1:62500
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Title: Seismic Shaking
Contributors:- Polygon data
- 2002
Summary: Ground shaking is the primary cause of earthquake damage to man-made structures. When the ground shakes strongly, buildings can be damaged or destroyed and their occupants may be injured or killed. Seismologists have observed that some districts tend to repeatedly experience stronger seismic shaking than others. This is because the ground under these districts is relatively soft. Soft soils amplify ground shaking. If you live in an area that in past earthquakes suffered shaking stronger than that felt in other areas at comparable distance from the source, you are likely to experience relatively strong shaking in future earthquakes as well. An example of this effect was observed in San Francisco, where many of the same neighborhoods were heavily damaged in both the 1906 and 1989 earthquakes. The influence of the underlying soil on the local amplification of earthquake shaking is called the site effect. Other factors influence the strengh of earthquake shaking at a site as well, including the earthquake's magnitude and the site's proximity to the fault. These factors vary from earthquake to earthquake. In contrast, soft soil always amplifies shear waves. If an earthquake is strong enough and close enough to cause damage, the damage will usually be more severe on soft soils.
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Title: Bus Route
Contributors:- Line data
- 2007
Summary: County Connection Shuttle Bus Routes were created from information provided by the County Connection Shuttle. Bus routes were extracted from existing TIGER data. Golden Gate Bus routes were created from the "Winter 2003-2004 Golden Gate Bus Ferry Transit Guide." Routes were extracted from our existing TIGER data. National Park Service bus routes were created from information provided by Point Reyes National Seashore. Routes were extracted from existing TIGER data. Sausalito Area Local Land Yacht (SALLY) data were created from information provided by SALLY. Routes were extracted from existing TIGER data. West Marin Stagecoach bus route data were created from information provided by the West Marin Stagecoach. Bus routes were extracted from existing TIGER data.
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Title: SCGISDB2_BASE_HYD_USGSSTRM
Contributors:- Line data
- 2003
Summary: Compiled by Sonoma County GIS group. Polyline layer only. The base line work is compiled from the CDF FRAP (California Department of Forestry Fire and Resource Assessment Program) Russian River and Gualala River Watersheds (River Basins) data sets which include; 1:24000 Forest Service Cartographic Feature Files and 1:24000 USGS (United States Geological Survey) DLG-3 files, Sonoma Creek Watershed data provided by Sonoma Ecology Center, watersheds that include part of Sonoma County not included in the above data are derived from USGS DLG-3 files. The original USGS DLG-3 files used in this data set were edited and new line work added. The original USGS DLG-3 files used for this data set were edge matched and edited for connectivity. The stream line work has also been centerlined through water bodies using artificial connectors. The data was then compared to USGS 7.5 minute quads and edited to reflect the USGS classification of perennial and intermittent streams. Only streams included on the USGS 7.5 minute quads where retained in this layer. USGS stream symbol number 405 was used to determine intermittent streams. 7.5 minute quads with this symbol number on it show perennial streams as a solid blue line. Some USGS 7.5 minute quads show blue line streams on them with a solid blue line, in these cases the blue line with a thickness of .008" was classified as a perennial stream while the lines with a thickness of .004" were classified as a intermittent stream. Most fields from the data sets used to compile this layer where removed, and network not retained.
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Title: Bouguer gravity anomaly map of Minnesota, S-16
Contributors:- Not specified
- 1992
Summary: Bouguer gravity anomaly map (anomaly related to different densities of rocks in the upper crust, Bouguer anomaly is a corrected difference between an observed gravity measurement and value predicted from a generalized earth model), shown as contour lines (isolines) of equal value, map of Minnesota, scale 1:500,000.
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Title: Vernal Pools: South Coast Ranges, California, 1998
Contributors:- Polygon data
- 2003
Summary: This polygon shapefile depicts vernal pools in Monterey, Santa Barbara, San Benito, San Luis Obispo and Ventura counties that were mapped from one-meter resolution digital orthophoto quadrangles (DOQQs) from the United States Geological Survey, mostly based on 1994 air photos. Mapping from DOQQs subsequently was checked against 10-meter resolution SPOT cover taken during the summer of 2000. This coverage presents findings from comprehensive mapping of vernal pool habitats in Monterey, Santa Barbara, San Benito, San Luis Obispo and Ventura counties. In 1995, Dr. Robert F. Holland identified the complexes on aerial photos (the most recent available for each county) and traced the polygons onto USGS 7.5' quads from which they were digitized. Vernal pool complexes were then given a density rating. The coverage was refined in June of 1998, with SPOT Imagery and recent U2 (low-flying aircraft) photography. The layer does not contain delineations of individual vernal pools and was not intended for use in wetland delineations. This coverage allows for display and analysis of existing vernal pool complexes in these California counties. California Department of Fish and Wildlife. (2003). Vernal Pools: South Coast Ranges, California, 1998. Available at: http://purl.stanford.edu/bx292ps4054. 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: Vernal Pools Study Area: South Coast Ranges, California, 1998
Contributors:- Polygon data
- 2003
Summary: This polygon shapefile depicts the vernal pool study area boundaries within Monterey, Santa Barbara, San Benito, San Luis Obispo and Ventura counties. This coverage presents findings from comprehensive mapping of vernal pool habitats in Monterey, Santa Barbara, San Benito, San Luis Obispo and Ventura counties. In 1995, Dr. Robert F. Holland identified the complexes on aerial photos (the most recent available for each county) and traced the polygons onto USGS 7.5' quads from which they were digitized. Vernal pool complexes were then given a density rating. The coverage was refined in June of 1998, with SPOT Imagery and recent U2 (low-flying aircraft) photography. The layer does not contain delineations of individual vernal pools and was not intended for use in wetland delineations. This coverage allows for display and analysis of existing vernal pool complexes in these California counties. California Department of Fish and Wildlife. (2003). Vernal Pools Study Area: South Coast Ranges, California, 1998. Geobotanical Phenomenology. Available at: http://purl.stanford.edu/bt252xw4705. 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: Vernal Pools: Central Valley, California, 1998
Contributors:- Polygon data
- 1998
Summary: This polygon shapefile depicts the distribution of extant California Central Valley vernal pool complexes for use by the United States Fish and Wildlife Service in recovery planning for listed and sensitive species. True color aerial slides from the Deptartment of Water Resources were interpreted, and vernal pool complexes were identified. Complexes more than 40 acres in size were then digitized as polygons and given a density rating (see Resource Fields for attribute definitions). This layer was created to help biologists and resource planners make informed decisions in their recovery and planning efforts. It depicts vernal pool complexes, not individual vernal pools. Since the minimum mapping unit of the coverage is 40 acres, it may not provide the level of detail required for larger scale (smaller area, more site-specific) conservation planning. This coverage is a polygon layer of vernal pool complexes throughout the greater Central Valley. In 1995, Dr. Robert F. Holland identified the complexes on aerial photos (the most recent available for each county) and traced the polygons onto USGS 7.5' quads from which they were digitized. Vernal pool complexes were then given a density rating. The coverage was refined in June of 1998, with SPOT Imagery and recent U2 (low-flying aircraft) photography. The layer does not contain delineations of individual vernal pools and was not intended for use in wetland delineations. This coverage allows for display and analysis of existing vernal pool complexes in California's Central Valley. California Department of Fish and Wildlife. (1998). Vernal Pools: Central Valley, California, 1998 Geobotanical Phenomenology. Available at: http://purl.stanford.edu/vk516fv3812. Converted to California Teale Albers NAD83 by the California Department of Fish and Game -- BEGIN ORIGINAL METADATA - THIS INFORMATION MAY NOT BE CURRENT -- CALIFORNIA DEPARTMENT OF FISH AND GAME HABITAT CONSERVATION DIVISION WETLANDS INVENTORY AND CONSERVATION UNIT (WICU) METADATA FOR HOLLAND'S CENTRAL VALLEY VERNAL POOLS COVERAGE LICENSE AGREEMENT AND PROTOCOL FOR DISTRIBUTION 1) By registering, downloading, and/or otherwise accepting this data-set, the user agrees to abide by all terms and conditions listed herein. 1) This data-set is not intended for regulatory purposes and may not be used for such purposes. 1) This data-set may not be redistributed without prior written approval from the California Department of Fish and Game, W.I.C.U. coordinator (Mr. Joe Carboni : 916/324-1414). 1) Graphic or textual representation of data shall include appropriate references to sources including author, the U.S. Fish and Wildlife Service (USFWS) and the California Department of Fish and Game (CDFG). 1) Data shall not be amended, edited, or revised in any manner or used inappropriately to produce inaccurate, incomplete, or misleading analyses, reports, maps, or related products. 1) All rights in data remain the property of the U.S. Fish and Wildlife Service and USFWS reserves the right to revoke use privileges at any time. SUMMARY This Arc/Info coverage is a polygon layer of vernal pool complexes greater than 40 acres in size for 29 counties throughout the greater Central Valley, and some north bay counties. In 1995, Dr. Robert F. Holland identified the complexes on aerial photos (the most recent available for each county) and traced the polygons onto USGS 7.5' quads from which they were digitized. Vernal pool complexes were then given a density rating. The coverage was refined in June of 1998, with SPOT Imagery and recent U2 (low-flying aircraft) photography. The layer does not contain delineations of individual vernal pools and was not intended for use in wetland delineations. FULL METADATA (DRAFT) COVERAGE NAME: usfwsvp2 COVERAGE DATE: June 22nd, 1998 METADATA FILE: vpool_meta.txt METADATA DATE: August, 1998 COVERAGE DESCRIPTION: The VERNAL POOLS coverage (USFWSVP) is a polygon coverage representing existing vernal pool complexes in California's Central Valley, as identified and mapped by Dr. Robert F. Holland. The purpose of the inventory was to map the distribution of extant CA Central Valley vernal pool complexes for use by the U.S. Fish and Wildlife Service in recovery planning for listed and sensitive species. True color aerial slides from the Dept of Water Resources were interpreted, and vernal pool complexes were identified. Complexes more than 40 acres in size were then digitized as polygons and given a density rating (described below). This coverage was created to help biologists and resource planners make informed decisions in their recovery and planning efforts. It depicts vernal pool complexes, not individual vernal pools. Since the minimum mapping unit of the coverage is 40 acres, it may not provide the level of detail required for larger scale (smaller area, more site-specific) conservation planning. The coverage was created using the Arc/Info command `CREATE', using an existing coverage as a template for cartographic parameters. After the initial setup of the coverage for data input, vernal pool polygon complexes were digitized into the G.I.S database. The coverage was then built, the tolerances set and the attribute fields added. The polygon boundaries were refined by Dr. Holland by reviewing U2 (low-flying aircraft) photographs and 1:130,000 scale paper plots of the original data laid over SPOT Imagery. The changes were then edited in the G.I.S. database. VITAL STATISTICS: Datum: NAD 27 Projection: Albers Units: Meters 1st Std. Parallel: 34 00 00 (34.0 degrees N) 2nd Std. Parallel: 40 30 00 (40.5 degrees N) Longitude of Origin: -120 00 00 (120.0 degrees W) Latitude of Origin: 00 00 00 (0.0 degrees) False Easting (X shift): 0 False Northing (Y shift): -4,000,000 Source: Department of Fish and Game Source Media: paper maps Source Projection: Teale Albers Source Units: meters Source Scale: 1:24,000 Capture Method: Digitized Conversion Software: ARC/INFO rev. 6.1.1 Data Structure: Vector ARC/INFO Coverage Type: Polygon ARC/INFO Precision: Double ARC/INFO Tolerances: fuzzy = .002V Number of Features: 1918 Layer Size: 1.92 MB Data Updated: June, 1998 DATA DICTIONARY: Non-standard POLYGON attribute fields: COLUMN ITEM NAME WIDTH TYPE --------------------------------------------------------- 49 QUAD_NAME 20 C 69 LUCODEOLD 1 N 70 DATEOLD 4 N 74 COUNTY 20 C 94 LUCODENEW 1 N 95 DATENEW 4 N NOTE: Items common to all POLYGON coverages: AREA, PERIMETER, USFWSVP# and USFWSVP-ID are not described here. Description of items (fields): QUADNAME: Name of USGS quadrangle (24K) where data were originally digitized from. LUCODEOLD: There are nine fields, marked 1-9. Cut_Out = 0 Density Index = 1 Density Index = 2 Density Index = 3 Cultivated = 4 Developed = 5 Mitigated Site = 6 Extirpated = 7 Disturbed DI 1 = 8 (disturbed vernal pool/density index of 1) Disturbed DI 2 = 9 (disturbed vernal pool/density index of 2) Density Indexes Described 0 = CUT_OUT. These polygons are 'do-nut' holes within vernal pool complexes; e.g. a cultivated feld surrounded by habitat. 1 = LOW DENSITY. Pools are small, widely and patchily scattered. At least 2 pools and usually 5 or more exist within the delineated complex. 2 = MEDIUM DENSITY. Pools are larger, more numerous, and more pervasively scattered, but still patchy within the delineated complex. 3 = HIGH DENSITY. Pools are all sizes and numerous. Pools are distributed over the entire delineated vernal pool complex. Also includes large, isolated playa-like pools. 4 = CULTIVATED. Pools are present and persist in spite of obvious cultivation, usually of hay crops. 5 = DEVELOPED. Pools are present and still visible in spite of subdivision into parcels smaller than minimum mapping size. 6 = MITIGATED SITE. The site is a mitigated area consisting within a vernal pool complex. (Not used in this project) 7 =EXTIRPATED. Pools were present in earlier photos, but were gone in 1997 U2 flight photos.. 8 = DISTURBED DI 1. This is a polygon/delineated complex that is fits the criteria of 'density index of 1', but that is disturbed in some way or form. 9 = DISTURBED DI 2. This is a polygon/delineated complex that is fits the criteria of 'density index of 2', but that is disturbed in some way or form. DATEOLD: This is the year of the photographs used for each county in the original 1995 aerial photo interpretation. COUNTY: This is the county in which the polygon is contained. LUCODENEW: These are 1997-1998 updates of LUCODEOLD, especially where land use changes have taken place. DATENEW: This is the year the check was done with SPOT Imagery and U2 photography. DATA QUALITY ASSESSMENT This coverage depicts vernal pool complexes, not individual vernal pools. The density ratings are subjective but were validated with actual point occurrence data of individual vernal pools. (For a copy of the paper "A Comparison of Two Methods for Mapping Vernal Pools" contact Monica Parisi, Wildlife Biologist at (916) 657-4341 or e-mail The validation suggested that 1.) dense complexes of vernal pools were being picked up by aerial photo interpretation and 2.) the density ratings should not be the sole basis for identifying high priority preserve areas, especially at the local planning level. At the local level, this layer is probably best used for suggesting new areas for regional preserves, areas which may never have been considered because of a lack of information. DATA CONTACTS Please contact one of the individuals below for questions about the data or for a copy of "Mapping Project for the Vernal Pool Recovery Plan Methodology", a report by Dr. Robert F. Holland to the U.S. Fish and Wildlife Service (January, 1996). Craig Turner, Research Analyst (G.I.S) Phone: (916) 324-8298 E-mail: cturner@dfg.ca.gov Kari Lewis, Land Conservation Planner Phone: (916) 322-1869 E-mail: klewis@dfg.ca.gov California Department of Fish and Game Natural Heritage Division 1807 `13th' street, Sacramento 95814. -- END ORIGINAL METADATA -- 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: Vernal Pools Study Area: Central Valley, California, 1998
Contributors:- Polygon data
- 1998
- Holland, Ph.D., Robert F.
- U.S. Fish and Wildlife Service
- California. Department of Fish and Wildlife
Summary: This polygon shapefile is believed to represent a boundary used for mapping vernal pool complexes in a study by Dr. Robert F. Holland (reference the mapped vernal pool complexes dataset named "usfwsvp2" for related information).True color aerial slides from the Deptartment of Water Resources were interpreted, and vernal pool complexes were identified. Complexes more than 40 acres in size were then digitized as polygons and given a density rating (see Resource Fields for attribute definitions). This layer was created to help biologists and resource planners make informed decisions in their recovery and planning efforts. It depicts vernal pool complexes, not individual vernal pools. Since the minimum mapping unit of the coverage is 40 acres, it may not provide the level of detail required for larger scale (smaller area, more site-specific) conservation planning. This coverage is a polygon layer of vernal pool complexes greater than 40 acres in size for 29 counties throughout the greater Central Valley, and some north bay counties. In 1995, Dr. Robert F. Holland identified the complexes on aerial photos (the most recent available for each county) and traced the polygons onto USGS 7.5' quads from which they were digitized. Vernal pool complexes were then given a density rating. The coverage was refined in June of 1998, with SPOT Imagery and recent U2 (low-flying aircraft) photography. The layer does not contain delineations of individual vernal pools and was not intended for use in wetland delineations. This coverage allows for display and analysis of existing vernal pool complexes in California's Central Valley. California Department of Fish and Wildlife. (1998). Vernal Pools Study Area: Central Valley, California, 1998. California Department of Fish and Wildlife. Available at: http://purl.stanford.edu/vp108sq2622. 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: USA (Populated Places, 2003)
Contributors:- Point data
- 2008
Summary: This data set includes cities in the United States, Puerto Rico and the U.S. Virgin Islands. These cities were collected from the 1970 National Atlas of the United States. Where applicable, U.S. Census Bureau codes for named populated places were associated with each name to allow additional information to be attached. The Geographic Names Information System (GNIS) was also used as a source for additional information. This is a revised version of the December, 2003, data set.
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Title: Soil map Hendricks County sheet Indiana
Contributors:- Thematic maps
- 1913
Summary: Shows soil types classification by colors and symbols. "Field Operations, Bureau of Soils, 1913." "A. Hoen & Co. Lith Baltimore Md." Imprint: [Washington, D.C.?] : Bureau of Soils, 1913. Scale: 1:63,360; Dimensions: 57 x 50 cm Coordinates: W0864200 W0862000 N0395600 N0393600
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Title: Soil map, Indiana, Boone County sheet
Contributors:- Thematic maps
- 1912
Summary: Shows soil types classification by colors and symbols. "Field Operations Bureau of Soils 1912." "A. Hoen & Co. Lith. Baltimore, Md." Imprint: [Washington, D.C.?] : The Bureau, [1912?] Scale: 1:63,360; Dimensions: 47 x 63 cm Coordinates: W0864200 W0861500 N0401100 N0395600
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Title: Portland Air Toxics Solutions Data, 2012
Contributors:- Polygon data
- 2016
- Oregon Department of Environmental Quality (www.deq.state.or.us)
- Scotti Cosentino Reed; James D. Proctor. Data obtained from DEQ and processed by SR and JDP.
Summary: "In 2009, DEQ created the Portland Air Toxics Solutions project to work with local communities to develop air toxics reduction strategies for the Portland region, including portions of Multnomah, Washington and Clackamas Counties" (www.deq.state.or.us/aq/toxics/pats.htm). These data represent block-group scale modeling of air toxics risks from a variety of sources (19 pollutants total), prepared in 2012 with model extrapolation to target year 2017. The study led to a number of priorities and ongoing management/policy discussions regarding Portland air quality. Data included here generally represent a ratio of pollutant concentration to ABC (ambient background concentration) for that pollutant, implying relative risk from each pollutant; see attribute file for details.
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Title: Portland Topographical Map of 1964
Contributors:- Raster data
- 1964
Summary: This topographical map is a compilation of four Geological Survey Portland maps published in 1964. Georeferenced to fit Oregon North State Plane (feet) NAD 1927 coordinate system (Fipszone 3601).
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Title: USA (GNIS Buildings, 2005)
Contributors:- Point data
- 2005
Summary: U.S. Geographic Names Information System Buildings represents an automated inventory of the proper names and locations of physical and cultural geographic features located throughout the United States and its Territories.
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Title: USA (GNIS Cemeteries, 2005)
Contributors:- Point data
- 2005
Summary: U.S. Geographic Names Information System Cemeteries represents an automated inventory of the proper names and locations of physical and cultural geographic features located throughout the United States and its Territories.
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Title: USA (GNIS Churches, 2005)
Contributors:- Point data
- 2005
Summary: U.S. Geographic Names Information System Churches represents an automated inventory of the proper names and locations of physical and cultural geographic features located throughout the United States and its Territories.
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Title: USA (GNIS Golf Locales, 2005)
Contributors:- Point data
- 2005
Summary: U.S. Geographic Names Information System Golf Locales represents an automated inventory of the proper names and locations of physical and cultural geographic features located throughout the United States and its Territories. No data exists for Alaska.
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Title: USA (GNIS Locales, 2005)
Contributors:- Point data
- 2005
Summary: U.S. Geographic Names Information System Locales represents an automated inventory of the proper names and locations of physical and cultural geographic features located throughout the United States and its Territories.
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Title: USA (GNIS Summits, 2005)
Contributors:- Point data
- 2005
Summary: U.S. Geographic Names Information System Summits represents an automated inventory of the proper names and locations of physical and cultural geographic features located throughout the United States and its Territories.