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873 results returned

  1. Title: Karst hydrogeology of LeRoy Township, Mower County, Minnesota, OFR97-02

    Contributors:

    Summary: Description of the bedrock geology, karst features and depth to bedrock as it relates to hydrogeology in LeRoy Township of Mower County, Minnesota, Plate 1 Bedrock geology map (39x49 in.), Plate 2 Database and bedrock topography map (25.5x28.5 in.).

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  2. Title: Geologic atlas of Mower County, Minnesota, C-11, Part B, Plate 10, Karst Hydrogeomorphic Units

    Contributors:

    Summary: Maps showing distribution of karst (carbonate rock with caves, springs) units and features and karst hydrology in carbonate rocks susceptible to being dissolved by acidic ground water, scale 1:100000, Mower County.

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  3. Title: Geologic atlas of Pine County, Minnesota, C-13, Part A, Plate 6, Sinkhole distribution, Depth to Bedrock, and Bedrock Topography

    Contributors:

    Summary: Map showing the thickness (depth to bedrock) of unconsolidated sediments (Quaternary glacial and stream materials) over the bedrock surface and elevation of the bedrock surface (bedrock topography), scale 1:200,000; map showing locations of sinkholes and sinkhole cross sections, scale 1:100,000, Pine County.

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  4. Title: Physiographic regions of Ohio

    Contributors:

    Summary: by C. Scott Brockman. "Total copies printed: 20,000. Unit cost: $.05. Publication date: 8/02." Table on verso. Scale approximately 1:212,000 "4/98." "Derived from Ohio ecoregions mapping project funded by U.S. Forest Service." Includes inset map "Provinces & sections."

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  5. Title: Hydrogeology of the Paleozoic bedrock in southeastern Minnesota, RI-61, Plate 2

    Contributors:

    Summary: Cross section of Paleozoic bedrock from central Mower County east showing hydrostratigraphic (water bearing rock units) attributes and classification of aquifers and confining units (rock units that prevent water movement in the vertical direction), scale 1 inch = about 7 miles.

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  6. Title: Hydrogeology of the Paleozoic bedrock in southeastern Minnesota, RI-61, Plate 1

    Contributors:

    Summary: Cross section of Paleozoic bedrock from the northern part of the Twin Cities Metropolitan area south to central Mower County showing hydrostratigraphic (water bearing rock units) attributes and classification of aquifers and confining units (rock units that prevent water movement in the vertical direction), scale 1 inch = about 7 miles.

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  7. Title: Geologic atlas of Fillmore County, Minnesota, C-8, Part B, Plate 9, Springsheds

    Contributors:

    Summary: Map showing the locations of springs and seeps and the interaction of surface drainage, karst (carbonate rock with caves, springs) ground water and subsurface flow, scale 1:100,000, Fillmore County.

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  8. Title: Geologic atlas of Goodhue County, Minnesota, C-12, Part B, Plate 10, Sinkholes, Sinkhole Probability, and Springs and Seeps

    Contributors:

    Summary: Maps showing distribution of karst (carbonate rock with caves, springs) units and features and karst hydrology in carbonate rocks susceptible to being dissolved by acidic ground water, scale 1:100000, Goodhue County.

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  9. Title: Geologic atlas of Fillmore County, Minnesota, C-8, Part B, Plate 8, Sinkholes and Sinkhole Probability

    Contributors:

    Summary: Map showing location of sinkholes and likelihood of future sinkhole development, scale 1:100,000, Fillmore County.

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  10. Title: Geologic atlas of Olmsted County, Minnesota, C-3, Plate 7, Sinkhole Probability

    Contributors:

    Summary: Map showing location of sinkholes and likelihood of future sinkhole development, scale 1:100,000, Olmsted County.

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  11. Title: Geologic atlas of Winona County, Minnesota, C-2, Plate 5, Sinkhole Probability

    Contributors:

    Summary: Map showing location of sinkholes and likelihood of future sinkhole development, scale 1:100,000, Winona County.

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  12. Title: Geologic atlas of Wabasha County, Minnesota, C-14, Part A, Plate 5, Karst Features

    Contributors:

    Summary: Maps showing distribution of karst (carbonate rock with caves, springs) rock units and features and karst hydrology, including springs (water emerging from the ground) and stream sinks (water sinking into the ground), in carbonate rocks susceptible to being dissolved by acidic ground water, scale 1:100000, Wabasha County.

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  13. Title: Truck Traffic Volume, California, 2014

    Contributors:

    Summary: This point shapefile contains annual average daily truck traffic volume (also known as traffic counts) on California's state highway network for 2014. Annual average daily truck traffic is the total truck traffic volume divided by 365 days. Truck counting is done throughout the state in a program of continuous truck count sampling. The sampling includes a partial day, 24-hour, 7-day and continuous vehicle classification counts. The partial day and 24-hour counts are usually made on high volume, urban highways. The 7-day counts are made on low volume, rural highways. The counts are usually taken only once in the year. About one-sixth of the locations are counted annually. The resulting counts are adjusted to an estimate of annual average daily truck traffic by compensating for seasonal influence, weekly variation, and other variables that may be present. Annual average daily truck traffic is necessary for presenting a statewide picture of truck flow, evaluating truck trends, planning and designing highways and for other purposes. Truck traffic is classified by number of axles. The two-axle class includes 11/2-ton trucks with dual rear tires and excludes pickups and vans with only four tires. ). This layer is part of a collection of GIS data created by the California Department of Transportation (Caltrans). This dataset is intended for researchers, students, and policy makers for reference and mapping purposes, and may be used for basic applications such as viewing, querying, and map output production, or to provide a basemap to support graphical overlays and analysis with other spatial data. California Department of Transportation. (2015). Truck Traffic Volume, California, 2014. California Department of Transportation. Available at http://purl.stanford.edu/ds218yv2329. This is Category I data. Category I data are public domain and available to share with Caltrans partners. 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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  14. Title: Truck Traffic Volume, California, 2010

    Contributors:

    Summary: This point shapefile contains annual average daily truck traffic volume (also known as traffic counts) on California's state highway network for 2010. Annual average daily truck traffic is the total truck traffic volume divided by 365 days. Truck counting is done throughout the state in a program of continuous truck count sampling. The sampling includes a partial day, 24-hour, 7-day and continuous vehicle classification counts. The partial day and 24-hour counts are usually made on high volume, urban highways. The 7-day counts are made on low volume, rural highways. The counts are usually taken only once in the year. About one-sixth of the locations are counted annually. The resulting counts are adjusted to an estimate of annual average daily truck traffic by compensating for seasonal influence, weekly variation, and other variables that may be present. Annual average daily truck traffic is necessary for presenting a statewide picture of truck flow, evaluating truck trends, planning and designing highways and for other purposes. Truck traffic is classified by number of axles. The two-axle class includes 11/2-ton trucks with dual rear tires and excludes pickups and vans with only four tires. ). This layer is part of a collection of GIS data created by the California Department of Transportation (Caltrans). This dataset is intended for researchers, students, and policy makers for reference and mapping purposes, and may be used for basic applications such as viewing, querying, and map output production, or to provide a basemap to support graphical overlays and analysis with other spatial data. California Department of Transportation. (2014). Truck Traffic Volume, California, 2010. California Department of Transportation. Available at http://purl.stanford.edu/cz102xx0313. Total vehicle AADT for the same year is taken from the Traffic Volumes on California State Highways booklet also published by the California Department of Transportation.Reference Link: http://www.dot.ca.gov/hq/traffops/saferesr/trafdata/index.htm This is Category I data. Category I data are public domain and available to share with Caltrans partners. 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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  15. Title: Truck Traffic Volume, California, 2013

    Contributors:

    Summary: This point shapefile contains annual average daily truck traffic volume (also known as traffic counts) on California's state highway network for 2013. Annual average daily truck traffic is the total truck traffic volume divided by 365 days. Truck counting is done throughout the state in a program of continuous truck count sampling. The sampling includes a partial day, 24-hour, 7-day and continuous vehicle classification counts. The partial day and 24-hour counts are usually made on high volume, urban highways. The 7-day counts are made on low volume, rural highways. The counts are usually taken only once in the year. About one-sixth of the locations are counted annually. The resulting counts are adjusted to an estimate of annual average daily truck traffic by compensating for seasonal influence, weekly variation, and other variables that may be present. Annual average daily truck traffic is necessary for presenting a statewide picture of truck flow, evaluating truck trends, planning and designing highways and for other purposes. Truck traffic is classified by number of axles. The two-axle class includes 11/2-ton trucks with dual rear tires and excludes pickups and vans with only four tires. ). This layer is part of a collection of GIS data created by the California Department of Transportation (Caltrans). This dataset is intended for researchers, students, and policy makers for reference and mapping purposes, and may be used for basic applications such as viewing, querying, and map output production, or to provide a basemap to support graphical overlays and analysis with other spatial data. California Department of Transportation. (2014). Truck Traffic Volume, California, 2013. California Department of Transportation. Available at http://purl.stanford.edu/jq569jn6481. This is Category I data. Category I data are public domain and available to share with Caltrans partners. 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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  16. Title: Truck Traffic Volume, California, 2012

    Contributors:

    Summary: This point shapefile contains annual average daily truck traffic volume (also known as traffic counts) on California's state highway network for 2012. Annual average daily truck traffic is the total truck traffic volume divided by 365 days. Truck counting is done throughout the state in a program of continuous truck count sampling. The sampling includes a partial day, 24-hour, 7-day and continuous vehicle classification counts. The partial day and 24-hour counts are usually made on high volume, urban highways. The 7-day counts are made on low volume, rural highways. The counts are usually taken only once in the year. About one-sixth of the locations are counted annually. The resulting counts are adjusted to an estimate of annual average daily truck traffic by compensating for seasonal influence, weekly variation, and other variables that may be present. Annual average daily truck traffic is necessary for presenting a statewide picture of truck flow, evaluating truck trends, planning and designing highways and for other purposes. Truck traffic is classified by number of axles. The two-axle class includes 11/2-ton trucks with dual rear tires and excludes pickups and vans with only four tires. ). This layer is part of a collection of GIS data created by the California Department of Transportation (Caltrans). This dataset is intended for researchers, students, and policy makers for reference and mapping purposes, and may be used for basic applications such as viewing, querying, and map output production, or to provide a basemap to support graphical overlays and analysis with other spatial data. California Department of Transportation. (2014). Truck Traffic Volume, California, 2012. California Department of Transportation. Available at http://purl.stanford.edu/qt447xz2667. This is Category I data. Category I data are public domain and available to share with Caltrans partners. 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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  17. Title: Truck Traffic Volume, California, 2011

    Contributors:

    Summary: This point shapefile contains annual average daily truck traffic volume (also known as traffic counts) on California's state highway network for 2011. Annual average daily truck traffic is the total truck traffic volume divided by 365 days. Truck counting is done throughout the state in a program of continuous truck count sampling. The sampling includes a partial day, 24-hour, 7-day and continuous vehicle classification counts. The partial day and 24-hour counts are usually made on high volume, urban highways. The 7-day counts are made on low volume, rural highways. The counts are usually taken only once in the year. About one-sixth of the locations are counted annually. The resulting counts are adjusted to an estimate of annual average daily truck traffic by compensating for seasonal influence, weekly variation, and other variables that may be present. Annual average daily truck traffic is necessary for presenting a statewide picture of truck flow, evaluating truck trends, planning and designing highways and for other purposes. Truck traffic is classified by number of axles. The two-axle class includes 11/2-ton trucks with dual rear tires and excludes pickups and vans with only four tires. ). This layer is part of a collection of GIS data created by the California Department of Transportation (Caltrans). This dataset is intended for researchers, students, and policy makers for reference and mapping purposes, and may be used for basic applications such as viewing, querying, and map output production, or to provide a basemap to support graphical overlays and analysis with other spatial data. California Department of Transportation. (2014). Truck Traffic Volume, California, 2011. California Department of Transportation. Available at http://purl.stanford.edu/tg908cp8649. This is Category I data. Category I data are public domain and available to share with Caltrans partners. 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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  18. Title: Keyes Landing, Highgate, Vermont, 1836 (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of the historic paper map entitled: Map of Keyes Landing on Lake Champlain, Franklin County, State of Vermont, surveyed by Alexr. Martin. It was published in 1836. Scale [ca. 1:2,400]. Covers Keyes Landing in the Highgate Springs, Vermont. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Vermont State Plane Coordinate System (Meters) (FIPS 4400). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, or other information associated with the principal map. This map is a partial cadastral map showing drainage, proposed streets, parks, and property lot numbers and dimensions, selected buildings (store, tavern), and more. This layer is part of a selection of digitally scanned and georeferenced historic maps of New England from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of regions, originators, ground condition dates, scales, and map purposes.

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  19. Title: New map of Cairo and environs

    Contributors:

    Summary: Relief shown by hachures. Map shows railways, tramways, hills, gardens, and Maham, Christian and Jewish cemeteries and places of worship. Insets: Giza pyramids -- Heliopolis -- Helwan.

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  20. Title: Battle field of Young's Branch or Manassa Plains battle fought July 21, 1861; relief survey and map by James L. Bowen, topographical engineer.

    Contributors:

    Summary: Relief shown by hachures. Shows disposition of troops. Diagram showing shape and height of hills: "Scale of hills. Datum line, Young's Branch at the Stone house." "Linear survey by Warder & Catlett, surveyors and publishers." "Lith. of Hoyer & Ludwig. Richmond, Va." Includes "explanations" and guide to symbols. 1 map: mounted on cloth; 52 x 44 cm Manuscript note reads "The Above map represents a portion of the field of the first battle of Bull run. It was made by the Topographical Department of the Southern Army. S. Alexander Topographer 3rd Army Corps, Army of the Potomac, Ann Arbor Mich., Oct. 18th 1905.

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