Search for geospatial/GIS data

Find GIS data held at MIT and other institutions

10,000+ results returned

  1. Title: MassGIS 2003 Massachusetts Hydrography (1:100,000) (Polygons) (August 2000)

    Contributors:

    Summary: This datalayer contains polygons representing Massachusetts ponds, lakes, reservoirs, and rivers. MassGIS has adapted and modified the U.S. Geological Survey 1:100,000 Hydrography Digital Line Graph (DLG) quadrangle files to produce two layers: Hydrography (1:100,000) Polygons - ponds and lakes, Hydrography (1:100,000) Arcs - streams and rivers.

    View full record

  2. Title: MassGIS 2003 Massachusetts Hydrography (1:100,000) (Arcs) (August 2000)

    Contributors:

    Summary: This datalayer contains arcs representing Massachusetts rivers and streams. MassGIS has adapted and modified the U.S. Geological Survey 1:100,000 Hydrography Digital Line Graph (DLG) quadrangle files to produce two layers: Hydrography (1:100,000) Polygons - ponds and lakes, Hydrography (1:100,000) Arcs - streams and rivers.

    View full record

  3. Title: MassGIS 2000 Anadromous Fish Runs for Cape Cod (1997)

    Contributors:

    Summary: The Department of Fisheries, Wildlife and Environmental Law Enforcement (DFWELE) GIS Program working in conjunction with biologists from the MA Division of Marine Fisheries and the MA Division of Fisheries and Wildlife compiled and automated a point coverage of anadromous fish data. The data include all known coastal anadromous fish runs spawning habitat and runs for three major inland rivers - the Nashua, the Concord and the Shawsheen. Note, this data layer should not be considered definitive in determining the presence or absence of fish runs, spawning habitat, barriers or fishways. It is the DFWELE GIS Program's best current representation of these features. Neither should this layer or its derived maps be used for making site specific regulatory decisions. Rather, its appropriate use is for education and regional planning. This is a transition coverage. When MASSGIS completes its 'hydro centerline' project, producing a complete hydro network for the Commonwealth, inherently linear features such as fish runs and many of the spawning habitat features will be represented as such.

    View full record

  4. Title: MassGIS 2003 Massachusetts Designated Shellfish Growing Areas (Polygons) (October 2000)

    Contributors:

    Summary: The Designated Shellfish Growing Area (DSGA) datalayer was compiled by the Department of Fisheries, Wildlife and Environmental Law Enforcement's (DFWELE) Division of Marine Fisheries (DMF). Three hundred and three growing areas in Massachusetts have been designated by DMF's Shellfish Project. The data are stored in two feature layers: Designated Shellfish Growing Areas (Arcs) and Designated Shellfish Growing Areas (Polygons). A designated shellfish growing area is an area of potential shellfish habitat, and all three hundred and three DSGA's make up the territorial waters (tidal zone out to the territorial line) of the Commonwealth. Growing areas are managed with respect to shellfish harvest for direct human consumption, and comprise at least one or more classification areas. The classification areas are the management units, and range from being approved to prohibited (six different classification types in all) with respect to shellfish harvest. For example, one growing area may be composed of four classification areas, all of which are managed separately (have a classification type the same or different from the rest in the growing area). This coverage reflects classification areas as of July 1, 2000. The dataset was originally issued in October 2000.

    View full record

  5. Title: MassGIS 2003 Massachusetts Designated Shellfish Growing Areas (Arcs) (October 2000)

    Contributors:

    Summary: The Designated Shellfish Growing Area (DSGA) datalayer was compiled by the Department of Fisheries, Wildlife and Environmental Law Enforcement's (DFWELE) Division of Marine Fisheries (DMF). Three hundred and three growing areas in Massachusetts have been designated by DMF's Shellfish Project. The data are stored in two feature layers: Designated Shellfish Growing Areas (Arcs) and Designated Shellfish Growing Areas (Polygons). A designated shellfish growing area is an area of potential shellfish habitat, and all three hundred and three DSGA's make up the territorial waters (tidal zone out to the territorial line) of the Commonwealth. Growing areas are managed with respect to shellfish harvest for direct human consumption, and comprise at least one or more classification areas. The classification areas are the management units, and range from being approved to prohibited (six different classification types in all) with respect to shellfish harvest. For example, one growing area may be composed of four classification areas, all of which are managed separately (have a classification type the same or different from the rest in the growing area). This coverage reflects classification areas as of July 1, 2000. The dataset was originally issued in October 2000.

    View full record

  6. Title: MassGIS 2000 Fish Traps (Weirs) (August 1999)

    Contributors:

    Summary: The Fish Traps (weirs) datalayer contains the point locations of fish trap permit holders' traps. These permit holders are licensed by the town in which the traps reside as well as by the MA Division of Marine Fisheries (DMF). Not all locations are active, and attributes in the PAT file reflect which trap was active each year from 1990 through 1998 based on catch reports submitted monthly by the permit holders.

    View full record

  7. Title: MassGIS 2000 Massachusetts Lobster Harvest Zone Statistics, 1997 (Polygons)

    Contributors:

    Summary: This datalayer shows statistics for lobsters harvested (by pounds) from 25 distinct statistical reporting areas covering a large portion of the Gulf of Maine and south, including the territorial waters of the Commonwealth of Massachusetts. Fourteen of the areas compose territorial waters, while the other 11 match those of the National Marine Fisheries Service areas for offshore bodies of water bordering the Commonwealth's territorial areas, including George's Bank. These areas are used mainly on maps for fishermen to report their landings (including lobster harvest), as well as for producing plots in various Massachusetts Division of Marine Fisheries (DMF) annual publications showing landings per area. The data distributed by MassGIS includes statistics for lobster harvest zones only; 1997 is the only year data is currently available.

    View full record

  8. Title: MassGIS 2000 Massachusetts Lobster Harvest Zones, 1997 (Polylines)

    Contributors:

    Summary: This datalayer consists of 25 distinct 'statistical reporting areas' covering a large portion of the Gulf of Maine and south, including the territorial waters of the Commonwealth of Massachusetts. Fourteen of the areas compose the territorial waters, while the other 11 match those of the National Marine Fisheries Service areas for offshore bodies of water bordering the Commonwealth's territorial areas, including George's Bank. These areas are used mainly on maps for fishermen to report their landings (including lobster harvest), as well as for producing plots in various Massachusetts Division of Marine Fisheries (DMF) annual publications showing landings per area. The data distributed by MassGIS includes statistics for lobster harvest zones only; 1997 is the only year data currently available.

    View full record

  9. Title: Kelp Canopy: Southern California, 2011

    Contributors:

    Summary: This polygon shapefile depicts the 2011 aerial kelp survey that was created from Digital Multi-Spectral Camera image files. The data was collected and processed by Ocean Imaging under contract by the Naval Air Systems Command (NAVAIR). This mosaicked multi-spectral imagery targeted giant kelp beds along the Naval Air Systems Command (NAVAIR) Point Mugu Sea Range. The area from Santa Monica Pier, Los Angeles county to Pt. Magu, Ventura county were not photographed. Some of the outer portions of kelp beds were cut off due to inadequate overlap in aerial surveys and these areas are noted in Grid Code 2. The imagery was collected on November 22 and December 07-08, 2011 from altitudes between 10,000 to 12,500 feet. Surveys were planned to coincide with periods of minimal change between high and low tides to avoid strong tidal induced currents. This dataset is complete, although the user should note any omissions. The data are projected in California Teale Albers using North American Datum 1983. File reindexed to match CDFW kelp administrative kelp bed boundaries modified by changes to California Code of Regulations, Title 14, Section 165, effective April 1, 2014. The dataset is used to assess the extent of kelp resources along the Southern California coast (Point Loma to two miles north of Gaviota Beach). The dataset was collected and created with the same camera system and processing software as the 2008 survey. Surface and subsurface kelp canopy imagery was collected under the same classification scheme. The user is cautioned to look for areas which appear truncated. The user is cautioned against making direct comparisons between the various kelp surveys for the following reasons: 1) Timing of the survey is important, particularly with respect to growing season, conditions in the ocean, storms, and harvest levels preceding the dates of survey photography. Seasonal variability may account for differences in surveys, which may not reflect a change in the bed's extent, productivity, or harvest level. 2) Statistical significance in change of area should be evaluated. To do this, a variance parameter is needed, which is obtained by repeated measurements. 3) Survey methods may not be consistent. Some method of calibration between the methods needs to be performed in order to insure a change of area is not due to survey instrumentation and not misinterpreted as a biological change. 4) An area where no kelp data are present may represent an area devoid of kelp, or may represent an area where kelp was not detected due to poor photo quality, missing photo coverage, or other issues with data collection and processing. Photo coverage is extensive for the state, but the user is advised to consult the supplementary information for each year to determine whether photographs were acquired for an area of interest. California Department of Fish and Wildlife Marine Resources Region. (2012). Kelp Canopy: Southern California, 2011. California Department of Fish and Wildlife. Marine Resources Region. Available at: http://purl.stanford.edu/pq743qn0702. Please cite the Originators in any reference to the data. NAVAIR and the California Department of Fish and Wildlife must be credited with the distribution of these data. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.

    View full record

  10. Title: Kelp Canopy: California, 2009

    Contributors:

    Summary: The data for this polygon shapefile was collected and created with the same camera system and processing software as the 2008 survey. Surface and subsurface kelp canopy imagery was collected and processed with separate classification schemes. The shapefile was created from Digital Multi-Spectral Camera image files. The data was collected and processed by Ocean Imaging under contract by the Resources Legacy Fund Foundation (RLFF) for the Marine Protected Areas Monitoring Enterprise. This dataset represents the 2009 aerial kelp survey. The imagery was collected on October 01, 2009 from an altitude of 12,500 feet. Surveys were planned to coincide with periods of minimal change between high and low tides to avoid strong tidal induced currents. This coverage is complete, although the user should note any omissions. The data are projected in California Teale Albers using North American Datum 1983. File reindexed to match CDFW kelp administrative kelp bed boundaries modified by changes to California Code of Regulations, Title 14, Section 165, effective April 1, 2014. This dataset was developed for the Marine Protected Areas Monitoring Enterprise to assess the extent of kelp canopy resources along the North Central California coast (Pigeon Point to Alder Creek). California Department of Fish and Wildlife Marine Resources Region. (2010). Kelp Canopy: California, 2009. California Department of Fish and Wildlife. Marine Resources Region. Available at: http://purl.stanford.edu/zd395qv1073. Please cite the Originators in any reference to the data. For the north central data: The Resources Legacy Fund Foundation (contract), the Marine Protected Areas Monitoring Enterprise (coordination), Ocean Imaging (data collection and processing), The California Department of Fish and Game (database management). For the Santa Barbara and San Nicolas Islands data: NAVAIR (contract), Ocean Imaging (data collection and processing, The California Department of Fish and Game (database management). For the southern California mainland section: The Central and Region 9 Kelp Consortiums (contract) , MBC Applied Environmental Sciences (data collection and processing), The California Department of Fish and Game (database management). This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.

    View full record

  11. Title: Turtle Nesting Sites on the Eastern Coast of Kenya, 2006

    Contributors:

    Summary: This point shapefile contains locations of turtle nesting and breeding sites on the eastern coast of Kenya. This data was used in Map 6.4 and Map 6.5 in Nature's Benefits in Kenya: An Atlas of Ecosystems and Human Well-Being. United Nations Development Programme (Kenya), Kenya Marine and Fisheries Research Institute and Geological Survey of Denmark . (2006). Turtle Nesting Sites on the Eastern Coast of Kenya, 2006. World Resources Institute. KMFRI and GSD. Available at: http://purl.stanford.edu/rp968zc9902 The full report is available at http://www.geus.dk/program-areas/nature-environment/international/reports/kensea/kensea_rapport.pdf. Data set is not for use in litigation. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, WRI, cannot assume liability for any damages, or misrepresentations, caused by any inaccuracies in the data, or as a result of the data to be used on a particular system. WRI makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.

    View full record

  12. Title: Coral Reefs on Eastern Coast of Kenya, 2006

    Contributors:

    Summary: This polygon shapefile represents coral reefs on the eastern coast of Kenya. These data were acquired from 'KenSea, Environmental Sensitivity Atlas for Coastal Area of Kenya,' published by the Geological Survey of Denmark (GEUS) (2006). To protect the ecological integrity of Kenya’s coral reefs, the government has designated six marine reserves — Kisite, Kiunga, Malindi, Mombasa, Mpunguti, and Watamu — encompassing a significant portion of the reef and its surrounding waters. This data was used in Map 6.4 and Map 6.5 in Nature's Benefits in Kenya: An Atlas of Ecosystems and Human Well-Being. Geological Survey of Denmark and Greenland, Kenya Marine and Fisheries Research Institute, and the United Nations Development Programme of Kenya. (2006). Coral Reefs on Eastern Coast of Kenya, 2006. GEUS. Available at: http://purl.stanford.edu/kb118sw6233 The full report is available at http://www.geus.dk/program-areas/nature-environment/international/reports/kensea/kensea_rapport.pdf. Data set is not for use in litigation. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, WRI, cannot assume liability for any damages, or misrepresentations, caused by any inaccuracies in the data, or as a result of the data to be used on a particular system. WRI makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.

    View full record

  13. Title: Mangroves on the Eastern Coast of Kenya, 2006 (Polygons)

    Contributors:

    Summary: This polygon shapefile shows areas of mangroves on the eastern coast of Kenya. This data was used in Map 6.4 and Map 6.5 in Nature's Benefits in Kenya: An Atlas of Ecosystems and Human Well-Being. Kenya Marine and Fisheries Research Institute, Danmarks og Grønlands geologiske undersøgelse and United Nations Development Programme, Kenya. (2006). Mangroves on the Eastern Coast of Kenya, 2006 (Polygons). World Resources Institute. Available at: http://purl.stanford.edu/qx480ts2219 The full report is available at http://www.geus.dk/program-areas/nature-environment/international/reports/kensea/kensea_rapport.pdf. Data set is not for use in litigation. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, WRI, cannot assume liability for any damages, or misrepresentations, caused by any inaccuracies in the data, or as a result of the data to be used on a particular system. WRI makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.

    View full record

  14. Title: Mangroves on the Eastern Coast of Kenya, 2006 (Lines)

    Contributors:

    Summary: This line shapefile represents mangroves on the eastern coast of Kenya. This data was used in Map 6.4 and Map 6.5 in Nature's Benefits in Kenya: An Atlas of Ecosystems and Human Well-Being. Kenya Marine and Fisheries Research Institute, Danmarks og Grønlands geologiske undersøgelse and United Nations Development Programme, Kenya. (2006). Mangroves on the Eastern Coast of Kenya, 2006 (Lines). World Resources Institute. Available at: http://purl.stanford.edu/sw115tp5754 The full report is available at http://www.geus.dk/program-areas/nature-environment/international/reports/kensea/kensea_rapport.pdf. Data set is not for use in litigation. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, WRI, cannot assume liability for any damages, or misrepresentations, caused by any inaccuracies in the data, or as a result of the data to be used on a particular system. WRI makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.

    View full record

  15. Title: Vernal Pools: Central Valley, California, 1998

    Contributors:

    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.

    View full record

  16. Title: Vernal Pools Study Area: Central Valley, California, 1998

    Contributors:

    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.

    View full record

  17. Title: Coastal Wetlands, Northeast United States, 1977-2014

    Contributors:

    Summary: This polygon shapefile represents the extent, approximate location and type of wetlands and deepwater habitats in the Northeastern United States between 1977 ansd 2014. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and near shore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. By policy, the Service also excludes certain types of "farmed wetlands" as may be defined by the Food Security Act or that do not coincide with the Cowardin et al. definition. Contact the Service's Regional Wetland Coordinator for additional information on what types of farmed wetlands are included on wetland maps. This dataset should be used in conjunction with the Wetlands Project Metadata layer, which contains project specific wetlands mapping procedures and information on dates, scales and emulsion of imagery used to map the wetlands within specific project boundaries. The present goal of the Service is to provide the citizens of the United States and its Trust Territories with current geospatially referenced information on the status, extent, characteristics and functions of wetlands, riparian, deepwater and related aquatic habitats in priority areas to promote the understanding and conservation of these resources. U.S. Fish and Wildlife Service. (2014). Coastal Wetlands, Northeast United States, 1977-2014. U.S. Fish and Wildlife Service. Available at: http://purl.stanford.edu/tq206qz6894. Digital wetlands data are intended for use us with base maps and digital aerial photography at a scale of 1:12,000 or smaller. Due to the scale, the primary intended use is for regional and watershed data display and analysis, rather than specific project data analysis. The map products were neither designed or intended to represent legal or regulatory products. Questions or comments regarding the interpretation or classification of wetlands or deepwater habitats can be addressed by visiting http://www.fws.gov/wetlands/FAQs.html These data were developed in conjunction with the publication Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of Wetlands and Deepwater Habitats of the United States. U.S. Department of the Interior, Fish and Wildlife Service, Washington, DC. FWS/OBS-79/31. Alpha-numeric map codes have been developed to correspond to the wetland and deepwater classifications described. For more informtion on the wetland classification codes visit http://www.fws.gov/wetlands/Data/Wetland-Codes.html. The U.S. Fish and Wildlife Service uses data standards to increase the quality and compatibility of its data. The standards used for the wetlands data can be found at: http://www.fws.gov/wetlands/Data/Data-Standards.html and include the FGDC Wetlands Mapping Standard, FGDC-STD-015-2009. Note that coastline delineations were drawn to follow the extent of wetland or deepwater features as described by this project and may not match the coastline shown in other base maps. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this Federal Geographic Data Committee-compliant and Content Standard for Digital Geospatial Metadata (CSDGM) file is intended to document the data set in nonproprietary form, as well as in Arc/INFO format, this metadata file may include some Arc/INFO-specific terminology. None. Precautions - Federal, state, and local regulatory agencies with jurisdiction over wetlands may define and describe wetlands in a different manner than that used in this inventory. There is no attempt, in either the design or products of this inventory, to define the limits of proprietary jurisdiction of any Federal, state, or local government or to establish the geographical scope of the regulatory programs of government agencies. Persons intending to engage in activities involving modifications within or adjacent to wetland areas should seek the advice of appropriate federal, state, or local agencies concerning specified agency regulatory programs and proprietary jurisdictions that may affect such activities. Acknowledgement of the U.S. Fish and Wildlife Service and (or) the National Wetlands Inventory would be appreciated in products derived from these data. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.

    View full record

  18. Title: Vernal Pool Complexes: San Francisco Bay Area, California, 1998

    Contributors:

    Summary: This polygon shapefile depicts existing vernal pool complexes, not individual vernal pools, in the nine county San Francisco Bay Area Region, California as identified and mapped by Dr. Robert F. Holland. The purpose of the inventory was to map the distribution of 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 Department 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. 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 dataset was developed/compiled for use in the San Francisco Bay Area Upland Habitat Goals Project, a Project used to identify a Conservation Lands Network (CLN) for biodiversity preservation to inform conservation investments and lasting cooperative conservation partnerships. The Conservation Lands Network GIS Database is the primary output of the Project. The data depicts the spatially explicit CLN that is recommended for the nine county San Francisco Bay Area Region, California. Bay Area Open Space Council, GreenInfo Network, Conservation Lands Network, and San Francisco Bay Area Upland Habitat Goals Project. (2011). Vernal Pool Complexes: San Francisco Bay Area, California, 1998. Bay Area Open Space Council. Available at http://purl.stanford.edu/yt005zz5295. 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.

    View full record

  19. Title: Wetland

    Contributors:

    Summary: This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and near shore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. By policy, the Service also excludes certain types of "farmed wetlands" as may be defined by the Food Security Act or that do not coincide with the Cowardin et al. definition. Contact the Service's Regional Wetland Coordinator for additional information on what types of farmed wetlands are included on wetland maps.

    View full record

  20. Title: MassGIS 2003 Massachusetts National Wetlands Inventory (Polygons) (February 2003)

    Contributors:

    Summary: This layer contains polygon features representing various wetlands and deepwater habitats for the state for Massachusetts. The National Wetlands Inventory (NWI) project, administered by the U.S. Fish and Wildlife Service, was established to generate information about the characteristics, extent and status of the Nation's wetlands and deepwater habitats. This information is used by Federal, State, and local agencies, academic institutions, U.S. Congress, and the private sector. The Emergency Wetland Resources Act of 1986 directs the Service to map the wetlands of the United States. The NWI has mapped 89% of the lower 48 states, and 31% of Alaska. The Act also requires the Service to produce a digital wetlands database for the United States. About 39% of the lower 48 states and 11% of Alaska are digitized. Approximately 50 percent of Massachusetts is available in digital format. For full details on the national mapping project visit the National Wetlands Inventory web site: http://www.fws.gov/nwi/

    View full record

Need help?

Ask GIS