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Global Change Master Directory (GCMD)
Aquifer Sensitivity to Contamination by Pesticide Leaching in Illinois
Entry ID: IGDNR_PESTAQSENS


Summary
Abstract: This data set was designed for statewide evaluation of
agrichemical leaching characteristics and associated
aquifer sensitivity to contamination. It was created to
classify soils and aquifer settings according to predictions
of leaching potential. The classifications have not been
validated by the results of water quality sampling. Accordingly,
the reliability of these aquifer sensitivity ratings as
predictors of water quality has not been evaluated.

This is a statewide Arc/Info data set for evaluating the potential
for contamination of shallow aquifers by pesticides. The sources
of this data set were published and digitized at 1:250,000; however,
the soils map and depth to aquifer map (stack-unit map) were
generated from source data mapped at 1:15,000 and 1:64,000,
respectively. This aquifer sensitivity map was published at
1:500,000 (statewide map), and 1:250,000 (county maps).
Nominal scale is 1:250,000.

Two statewide data sets were identified as containing
information that would be useful for producing aquifer
sensitivity maps: a soil association map (and database)
and a map of geologic materials to a depth of 50 feet
(Stack-unit map). The soil association map and database
were used in an interpretive mapping model that generated
a map of pesticide leaching classes by evaluating factors that
that relate to water movement characteristics of the soil. A
corresponding nitrate data set was generated by considering factors
that could predict water movement in the soil. This pesticide data
set was created by combining the nitrate map interpretations with
information on the distribution of organic matter. (Pesticides are
organic compounds that tend to adsorb to soil organic matter, and
so have their movement in soil water retarded.)

The Stack-Unit map was used to create a map of depth to the uppermost
aquifer, which was then combined with the map of pesticide leaching
classes to contamination by pesticide leaching. Six aquifer sensitivity
classes are indicated: Excessive, High, Moderate, Somewhat limited,
Limited, and Very limited.

Disturbed land and surface water areas are also shown.

These data are to be used in conjunction with ISGS Environmental
Geology report 148. This data set is one of a suite of six
related data sets (listed below). Full citation details are
available in the Cross References section.

Aquifer Sensitivity to Contamination by Nitrate Leaching in Illinois
Nitrate Leaching Classes of Illinois Soils
Nitrate Leaching Class Ranges

Aquifer Sensitivity to Contamination by
Pesticide Leaching in Illinois (this data set)
Pesticide Leaching Classes of Illinois Soils
Pesticide Leaching Class Ranges

This coverage includes county lines. These lines are not directly
relevant to the data, but are necessary for technical reasons.
Without the additional county lines, some of the polygons exceed
the maximum allowable vertex limit in ARCPLOT. This problem is
solved by the additional county lines, which serve to divide polygons
with too many vertices into smaller units. Accordingly, to remove
the county lines from maps created with ARCPLOT, the DROPLINE
command must be used on conjunction with the COUNTY_NAME
polygon item.

Related URL
Link: View Related Information
Description: Data available in Arc/Info export format.


Link: View Related Information
Description: FGDC metadata on Aquifer Sensitivity to Contamination by Pesticide Leaching in
Illinois.

This description is a member of a collection. Click to see members of this collection.


Geographic Coverage
 N: 42.0 S: 36.0  E: -87.0  W: -91.0

Data Set Citation
Dataset Creator: Illinois State Geological Survey
Dataset Title: Aquifer Sensitivity to Contamination by Pesticide Leaching in Illinois
Dataset Series Name: ISGS GIS Database
Dataset Release Date: 1995
Dataset Release Place: Champaign, Illinois
Dataset Publisher: Illinois State Geological Survey
Version: 1.0
Data Presentation Form: map


Temporal Coverage
Start Date: 1995-01-01
Stop Date: 1995-12-31


Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > ILLINOIS


Data Resolution
Latitude Resolution: not determined
Longitude Resolution: not determined


Science Keywords
AGRICULTURE >AGRICULTURAL CHEMICALS >FERTILIZERS    [Definition]
AGRICULTURE >AGRICULTURAL CHEMICALS >PESTICIDES    [Definition]
HUMAN DIMENSIONS >ENVIRONMENTAL IMPACTS >CONTAMINANT LEVELS/SPILLS    [Definition]
TERRESTRIAL HYDROSPHERE >GROUND WATER >GROUND WATER FEATURES >AQUIFERS    [Definition]
TERRESTRIAL HYDROSPHERE >GROUND WATER >GROUNDWATER CHEMISTRY    [Definition]
TERRESTRIAL HYDROSPHERE >GROUND WATER >GROUND WATER PROCESSES/MEASUREMENTS >INFILTRATION    [Definition]
TERRESTRIAL HYDROSPHERE >WATER QUALITY/WATER CHEMISTRY >CONTAMINANTS    [Definition]
LAND SURFACE >SOILS >SOIL CHEMISTRY    [Definition]
AGRICULTURE >SOILS >SOIL INFILTRATION    [Definition]
LAND SURFACE >SOILS >SOIL INFILTRATION    [Definition]


Access Constraints
none


Use Constraints
Reproduction or redistribution of copyrighted digital data sets or products
derived therefrom outside of licensees' organization or entity is expressly
forbidden. The only exception is redistribution to consultants working for the
licensee, and then only for purposes, related to work for the licensee. Such
consultants may not further reproduce or redistribute these data sets. None of
these data shall be electronically duplicated on magnetic or optical media for
use by others, in whole or in part, without permission of the appropriate
custodial division within DNR. Any hardcopies utilizing DNR data sets shall
clearly indicate their source. If the licensee has modified the data in any
way they are obligated to describe the types of modifications they have
performed on the hardcopy map. Licensee specifically agrees not to misrepresent
DNR data sets, nor to imply that changes they made were approved by DNR. These
data are not to be used for commercial profit.


Keywords
GIS
Geographic Information Systems
AGRICULTURE
AQUIFER
CONTAMINATION
GEOLOGY
GROUNDWATER
PESTICIDE
SOIL


Data Set Progress
COMPLETE


Originating Center
IGDNR


Data Center
Geological Survey, Dept. of Natural Resources, Illinois    [Information]
Data Center URL: http://isgs.illinois.edu/

Data Center Personnel
Name: DATABASE ADMINISTRATOR ILLINOIS STATE GEOLOGICAL SURVEY
Phone: 217-333-5102
Fax: 217-333-2830
Email: denhart at nomad.isgs.uiuc.edu
Contact Address:
615 East Peabody Drive
City: Champaign
Province or State: Illinois
Postal Code: 61820
Country: USA



Distribution
Distribution_Media: Online
Distribution_Size: 17.9 MB
Distribution_Format: Arc/Info export format
Fees: No fees


Personnel
DON KEEFER
Role: DIF AUTHOR
Role: TECHNICAL CONTACT
Phone: 217-244-2786
Fax: 217-333-2830
Email: dkeefer at geoserv.isgs.uiuc.edu
Contact Address:
615 East Peabody Drive
City: Champaign
Province or State: Illinois
Postal Code: 61820
Country: USA


Extended Metadata Properties
(Click to view more)

Creation and Review Dates
Last DIF Revision Date: 2018-05-11



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