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Aquifer Sensitivity to Contamination by Nitrate Leaching in Illinois Entry ID: IGDNR_NO3AQSENS |
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Summary
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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 and 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 nitrate. 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. 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 nitrate leaching classes by examining factors that relate to water movement characteristics of the soil. The Stack-Unit map was used to create a map of depth to the uppermost aquifer, which was then combined with the map of nitrate leaching classes. This combined map was interpreted based on the sensitivity of aquifers (to create a map of aquifer sensitivity) to contamination by nitrate 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 (this data set) Nitrate Leaching Class Ranges Aquifer Sensitivity to Contamination by Pesticide Leaching in Illinois 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
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Link:
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Description: Data available in Arc/Info export format. Link: VIEW EXTENDED METADATA Description: FGDC metadata on Aquifer Sensitivity to Contamination by Nitrate Leaching in Illinois. |
This data set 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 |
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Data Set Citation
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Dataset Originator/Creator:
Illinois State Geological Survey
Dataset Title: Aquifer Sensitivity to Contamination by Nitrate 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
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CONTINENT
> NORTH AMERICA
> UNITED STATES OF AMERICA
> ILLINOIS
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Data Resolution
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Latitude Resolution:
not determined
Longitude Resolution: not determined |
Science Keywords
| AGRICULTURE >AGRICULTURAL CHEMICALS >FERTILIZERS [Definition] |
| AGRICULTURE >AGRICULTURAL CHEMICALS >PESTICIDES [Definition] |
| AGRICULTURE >ANIMAL SCIENCE >ANIMAL MANURE AND WASTE [Definition] |
| HUMAN DIMENSIONS >ENVIRONMENTAL IMPACTS >CONTAMINANT LEVELS/SPILLS [Definition] |
| HUMAN DIMENSIONS >ENVIRONMENTAL GOVERNANCE/MANAGEMENT >LAND MANAGEMENT [Definition] |
| HUMAN DIMENSIONS >ENVIRONMENTAL GOVERNANCE/MANAGEMENT >LAND MANAGEMENT >LAND USE CLASSES [Definition] |
| TERRESTRIAL HYDROSPHERE >GROUND WATER >GROUNDWATER CHEMISTRY [Definition] |
| TERRESTRIAL HYDROSPHERE >WATER QUALITY/WATER CHEMISTRY >CONTAMINANTS [Definition] |
| TERRESTRIAL HYDROSPHERE >WATER QUALITY/WATER CHEMISTRY >NITROGEN COMPOUNDS [Definition] |
| TERRESTRIAL HYDROSPHERE >WATER QUALITY/WATER CHEMISTRY >TOXIC CHEMICALS [Definition] |
| LAND SURFACE >EROSION/SEDIMENTATION >SEDIMENT CHEMISTRY [Definition] |
| LAND SURFACE >LAND USE/LAND COVER >LAND PRODUCTIVITY [Definition] |
| LAND SURFACE >LAND USE/LAND COVER >LAND RESOURCES [Definition] |
| LAND SURFACE >LAND USE/LAND COVER >LAND USE CLASSES [Definition] |
| LAND SURFACE >SOILS >SOIL CHEMISTRY [Definition] |
ISO Topic Category
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FARMING
ENVIRONMENT |
Access Constraints
| none |
Use Constraints
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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
| AGRICULTURE |
| AQUIFER |
| CONTAMINATION |
| GEOLOGY |
| GROUNDWATER |
| LEACHING |
| NITRATE |
| SOIL |
| GIS |
| Geographic Information Systems |
Data Set Progress
| COMPLETE |
Originating Center
| IGDNR |
Data Center
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Geological Survey, Dept. of Natural Resources, Illinois
[Information]
Data Center URL: http://www.isgs.uiuc.edu/
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Distribution
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Distribution_Media:
Online
Distribution_Size: 17.6MB Distribution_Format: Arc/Info export format Fees: No fees |
Personnel
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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 |
Creation and Review Dates
Last DIF Revision Date:
2009-03-26
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