10,000+ results returned
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Title: Arctic regions with the tracks of search parties and the progress of discovery
Contributors:- Image data
- 1896
Summary: Relief shown by spot heights. "Soundings in fathoms." "Compiled from the latest information." "No. 1531."
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Title: University of Minnesota Minneapolis-St. Paul Campus map, 1968
Contributors:- Not specified
- 1968
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Title: University of Minnesota Minneapolis-St. Paul Campus, includeing InterCampus, map, 1966
Contributors:- Not specified
- 1966
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Title: Argentina, Territorio Nacional de la Tierra del Fuego, Estrecho de le Maire, Isla de los Estados (Raster Image)
Contributors:- Raster data
- 1985
Summary: compilation of hydrographic surveys done by the Servicio de Hidrografia Naval de la Armada Argentina (Naval Hydrographic Service of the Argentine Navy up to 1981). Depths shown by isolines and soundings. Relief shown by hachures and spot heights. "Soundings in meters." "Reproduction of Argentine chart H-418, 1st edition, 1984 with modifications in accordance with agreement between the Argentine Navy Hydrographic Service and the Defense Mapping Agency Hydrographic/Topographic Center. Argentinean copyright law applies." Includes tidal information. Sheet no. 22440. This map is part of a collection of scanned and georeferenced nautical charts produced by the National Geospatial-Intelligence Agency (NGA). United States. Servicio de Hidrografía Naval. Defense Mapping Agency. (1985). Argentina, Territorio Nacional de la Tierra del Fuego, Estrecho de le Maire, Isla de los Estados (Raster Image). LandInfo. Available at: https://purl.stanford.edu/df513dj0826 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: Kelp Canopy: Southern California, 2012
Contributors:- Polygon data
- 2013
Summary: This polygon shapefile is a thematic map representing mosaicked multi-spectral imagery targeting both exposed and submerged giant kelp beds along the Naval Air Systems Command (NAVAIR) Point Mugu Sea Range. The imagery used to create this classification was acquired at a spatial resolution of 0.3 meters using a Microsoft UltraCam-X digital camera acquiring in the red, green, blue and near-infrared bands. The image mosaic product used for the classification is a result of the resampling of the 0.3 meter data to 2 meter GSD. Surface kelp canopy and subsurface kelp classifications are seperate. The imagery was collected on October 14-16, November 13-14 and December 9-10, 2012. This dataset is complete at this time, 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 is used to assess the extent of kelp resources along the Southern California coast (Point Loma to approximately 3.8 miles north of Point Conception) and includes the Channel Islands. Surface kelp canopy and subsurface kelp classifications are seperate. The data was collected and processed by Ocean Imaging under contract by the Naval Air Systems Command (NAVAIR). 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 imagery collection. Season variability may account for differences in surveys which may not reflect a change in the bed's extent, productivity, or harvest level. (2) Statisical 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 should 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. Image coverage is extensive for the state, but the user is advised to consult the supplementary information for each year to determine whether imagery were acquired for an area of interest. California Department of Fish and Wildlife Marine Resources Region. (2013). Kelp Canopy: Southern California, 2012. California Department of Fish and Wildlife. Marine Resources Region. Available at: http://purl.stanford.edu/xk635rd3987. DISCLAIMER 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 imagery collection. Season variability may account for differences in surveys which may not reflect a change in the bed's extent, productivity, or harvest level. (2) Statisical 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 should 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. Image coverage is extensive for the state, but the user is advised to consult the supplementary information for each year to determine whether imagery were acquired for an area of interest. 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.
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Title: Uncompahgre Irrigation Project, Colorado
Contributors:- Not specified
- 1929
Summary: Relief shown by contours.; Prepared in the Washington office, J.H. Pellan, chief draftsman.; Includes text. 29 x 24 Centimeters
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Title: Colorado River Basin below Boulder Dam : 1929
Contributors:- Not specified
- 1929
Summary: Map no. 23566.; Shows irrigated and irrigable lands. 24 x 18 centimeters
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Title: Orland Project, California
Contributors:- Not specified
- 1927
Summary: Shows reservoirs and irrigable area.; Map no. 21880. 24 x 17 Centimeters
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Title: Newlands Irrigation Project, Nevada
Contributors:- Not specified
- 1925
Summary: Relief shown by hachures and spot heights.; Map no. 21444.; Includes text. 25 x 31 Centimeters
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Title: Umatilla Irrigation Project, Oregon
Contributors:- Not specified
- 1925
Summary: Relief shown by contours, hachures, and spot heights.; "Map no. 21441."; Includes text and index map. 25 x 50 centimeters
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Title: Rio Grande Irrigation Project, New Mexico-Texas
Contributors:- Not specified
- 1923
Summary: Relief shown by hachures and spot heights.; "Map No. 19199."; Inset: Upper Rio Grande drainage basin -- Location of Rio Grande Project. 26 x 54 centimeters
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Title: Soil map, Indiana, Monroe County sheet
Contributors:- Thematic maps
- 1922
Summary: Coordinates: W 86°41ʹ--W 86°19ʹ / N 39°21ʹ--N 38°59ʹ. Relief shown by contours. Shows distribution of soil types by colors and symbols. In lower margin: Williams & Heintz Co. Washington D.C. "Base map in part from U.S. Geological Survey sheets." Imprint: [Washington] : The Bureau, 1922 Dimensions: 52 x 66 cm; Scale: 1:63,360 Coordinates: W0880500 W0844700 N0414500 N0374600
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Title: Strawberry Valley Project, Utah
Contributors:- Not specified
- 1919
Summary: "Map no. 18208." Includes text. 29 x 34 centimeters
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Title: Soil map, Minnesota, Crookston sheet
Contributors:- Not specified
- 1906
Summary: Soils surveyed by A.W. Mangum and F.C. Schroeder 1906. 79 x 82 Centimeters
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Title: USA (MPO Boundaries, 2005)
Contributors:- Polygon data
- 2005
Summary: The United States Metropolitan Planning Organization database is a geographic database of Metropolitan Planning Organization political boundaries.
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Title: USA (MPO Boundaries, 2003)
Contributors:- Polygon data
- 2003
Summary: The United States Metropolitan Planning Organization database is a geographic database of Metropolitan Planning Organization political boundaries.
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Title: Lawrence, MA (Census Block Groups, 1990)
Contributors:- Polygon data
- 2002
Summary: 1990 census data for the City of Lawrence. Data is aggregated at the block group level
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Title: Lawrence, MA (Census Block Groups, 2000)
Contributors:- Polygon data
- 2002
Summary: The 2000 censuss data of Lawrence, MA, at the block group level
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Title: Boston, MA (US Census Blocks 2000)
Contributors:- Polygon data
- 2000
Summary: These data are a selection of geographic and cartographic information from the 1998 TIGER/Line files detailing blocks. This dataset includes geographic blocks, tabulation block, and block number record locations.
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Title: USA (Military Installations, 2001)
Contributors:- Polygon data
- 2001
Summary: The United States Military Installations database contains the boundaries, location, and areal information for important military installations in the United States and Puerto Rico. The database includes 436 polygons that represent 365 military installations.