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  2. National Cooperative Soil Survey - Wikipedia

    en.wikipedia.org/wiki/National_Cooperative_Soil...

    Geological Survey maps were generally unavailable and early soil surveyors used the plane table and alidade to develop their own base maps. Work for soil surveys was done at a mapping scale 1 inch to the mile. Scale as of 1999 is pretty well standardized at 1:12000 or 1:24000. Six different scales have been used in published soil surveys.

  3. List of GIS data sources - Wikipedia

    en.wikipedia.org/wiki/List_of_GIS_data_sources

    USDA NRCS soil data. Can interact with the dataset with Web Soil Survey online mapping tool. Libre Map Project: Online collection of all digital USGS 1:24K scale topographic maps (as well as various other GIS data) covering the United States, available as a free download. NPScape

  4. United States Geological Survey - Wikipedia

    en.wikipedia.org/.../United_States_Geological_Survey

    Works by or about United States Geological Survey at the Internet Archive; Mytopo historical maps hosts historical USGS topos in the northeast U.S. U.S. Geological Survey Documents at Texas Tech University 1873–2015; Historic technical reports from USGS (and other Federal agencies) are available in the Technical Report Archive and Image ...

  5. The National Map - Wikipedia

    en.wikipedia.org/wiki/The_National_Map

    The National Map Corps consists of volunteers who devote some of their time to provide cartographic information to the U.S. Geological Survey. The only requirements to participate are having access to the Internet and a current familiarity with the area being mapped. [6] This data is used to update The National Map.

  6. Soil survey - Wikipedia

    en.wikipedia.org/wiki/Soil_survey

    Soil survey, or soil mapping, is the process of classifying soil types and other soil properties in a given area and geo-encoding such information. Background

  7. Geological survey - Wikipedia

    en.wikipedia.org/wiki/Geological_survey

    A geological survey is the systematic investigation of the geology beneath a given piece of ground for the purpose of creating a geological map or model.Geological surveying employs techniques from the traditional walk-over survey, studying outcrops and landforms, to intrusive methods, such as hand augering and machine-driven boreholes, to the use of geophysical techniques and remote sensing ...

  8. Soil map - Wikipedia

    en.wikipedia.org/wiki/Soil_map

    A soil map is a geographical representation showing diversity of soil types or soil properties (soil pH, textures, organic matter, depths of horizons etc.) in the area of interest. [1] It is typically the result of a soil survey inventory, i.e. soil survey .

  9. USDA soil taxonomy - Wikipedia

    en.wikipedia.org/wiki/USDA_soil_taxonomy

    USDA soil taxonomy (ST) developed by the United States Department of Agriculture and the National Cooperative Soil Survey provides an elaborate classification of soil types according to several parameters (most commonly their properties) and in several levels: Order, Suborder, Great Group, Subgroup, Family, and Series.