Datasets

Coarse-grained Materials Within 50 Feet of the Ground Surface [Illinois]

Illinois Geospatial Data Clearinghouse Full Details

Full Details

Title
Coarse-grained Materials Within 50 Feet of the Ground Surface [Illinois]
Description
This map shows the distribution of coarse-grained materials and permeable bedrock within 50 feet of ground surface in Illinois.  This includes bedrock, sand and gravel, and alluvial units with characteristics that suggest a potential to store or conduct groundwater and yield potable water to wells and springs.  It was derived from stack-unit map data. Aquifers or potential aquifers on this map are defined as sand and gravel units at least five feet thick, sandstone at least ten feet thick, and fractured limestone or dolomite at least fifteen feet thick with a lateral extent of at least one square mile.  Minor aquifers typically yield from five to seventy gallons of potable water per minute. Potable water is defined as water containing less than 2,500 mg/L of total dissolved solids.   This feature class is intended to identify areas of Illinois where there is a potential for shallow aquifers to exist.   The scale of these data is 1:250,000.
Access Rights
Public
Format
File
Language
English
Date Added
October 21, 2023

Location

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Cite and Reference

  • Citation
    [Creator not found] (n.d.). Coarse-grained Materials Within 50 Feet of the Ground Surface [Illinois]. . https://clearinghouse.isgs.illinois.edu/data/hydrology/coarse-grained-materials-within-50-feet-ground-surface-illinois (dataset)
  • BTAA Geoportal Link

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