Description

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This data set was derived from the 1981 publication of the Hydrological Atlas of Michigan plate 26. Three plates of the Aquifer Characteristics of Glacial Drift map were scanned, geo-rectified and used as a backdrop in the digitizing of this polygon vector file.More Metadata

Dataset Attributes

  • OBJECTID
    Number
  • AQU_UNIT
    Text
    {"value"=>"4", "count"=>762} (), {"value"=>"2", "count"=>391} (), {"value"=>"3b", "count"=>97} (), {"value"=>"1", "count"=>77} (), {"value"=>"3a", "count"=>33} (), {"value"=>"3aX", "count"=>17} (), {"value"=>"3bX", "count"=>11} ()
  • AQU_CHAR
    Text
    {"value"=>"IV - Drift may be an unconfined aquifer to bedrock. Not possible to delinate from available data.", "count"=>762} (), {"value"=>"II - Drift generally not an aquifer, may include thin interbeded aquifers at depth", "count"=>391} (), {"value"=>"IIIb - Drift may or may not be aquifer at or near the surface. Drift generally consists of interbedded aquifers, aquicludes, and aquitards at depth", "count"=>97} (), {"value"=>"I - Thin drift (0-30 feet) overlying bedrock", "count"=>77} (), {"value"=>"IIIa - Drift usually unconfined at or near surface, generally consists of interbedded aquifers, aquicludes, and aquitards at depth", "count"=>33} (), {"value"=>"IIIa - Drift usually unconfined at or near surface, generally consists of interbedded aquifers, aquicludes, and aquitards at depth, BUT DRIFT MAY NOT BE AN AQUIFER IN SMALL DISCONTINUOUS AREAS", "count"=>17} (), {"value"=>"IIIb - Drift may or may not be aquifer at or near the surface. Drift generally consists of interbedded aquifers, aquicludes, and aquitards at depth, BUT DRIFT MAY NOT BE AN AQUIFER IN SMALL DISCONTINUOUS AREAS", "count"=>10} (), {"value"=>"IIIb - Drift may or may not be aquifer at or near the surface. Drift generally consists of interbedded aquifers, aquicludes, BUT DRIFT MAY NOT BE AN AQUIFER IN SMALL DISCONTINUOUS AREAS", "count"=>1} ()
  • Shape
    Number
  • Shape.STArea()
    Number
  • Shape.STLength()
    Number

About

  • By on February 27, 2015
  • Updated almost 2 years ago

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