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Section 1 | Identification Information - - - - - - top |
Originator | Minnesota DNR Division of Ecological and Water Resources - County Geologic Atlas and Regional Hydrogeologic Assessment Program |
Title | CHEMPT |
System Name | |
Abstract | Data includes wells sampled in Benton County, Minnesota for natural chemistry of groundwater by DNR staff for major cations and anions, trace elements, tritium, and carbon-14. Includes data collected for the Benton CGA Part B from 2010 and 2011. |
Purpose | County Geologic Atlas and Regional Hydrogeologic Assessment Program, Benton County Geologic Atlas, Part B, County Geologic Atlas Series C-23 |
Time Period of Content Date | 1991 to 2011 |
Currentness Reference | Publication date |
Progress | Complete |
Maintenance and Update Frequency | None Planned |
Spatial Extent of Data | Benton County, Minnesota |
Bounding Coordinates | East | -93.8 | West | -94.3 | North | 45.8 | South | 45.6 |
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Place Keywords | Minnesota, Benton County |
Theme Keywords | groundwater, water chemistry, residence time, wells |
Theme Keyword Thesaurus | None |
Access Constraints | None |
Use Constraints | Users may wish to verify critical information; sources include both the references here and information on file in the offices of the Minnesota Geological Survey and the Department of Natural Resources. Every effort has been made to ensure the interpretation shown conforms to sound geologic and cartographic principles. This map should not be used to establish legal title, boundaries, or locations of improvements. |
Contact Person Information | See Metadata Reference Information section, below |
Browse Graphic File Name | |
Browse Graphic File Description | |
Associated Data Sets | Benton County Geologic Atlas, Part A, County Geologic Atlas Series C-23, published by the Minnesota Geological Survey, 2010. More information and downloadable data for Part A available on the MGS data site. |
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Section 2 | Data Quality Information - - - - - - top |
Attribute Accuracy | |
Logical Consistency | Data are topologically correct using ArcGIS 10.0 |
Completeness | Complete |
Horizontal Positional Accuracy | unknown |
Vertical Positional Accuracy | not applicable |
Lineage | This file primarily contains well locations and associated inorganic and isotope chemistry sample analyses for wells sampled for the Benton County Geologic Atlas, Part B. Chemistry data are managed in a MS Access database. Excel tables of chemistry data are available online for download at water chemistry data access page. |
Source Scale Denominator | 100000 |
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Section 3 | Spatial Data Organization Information - - - - - - top |
Native Data Set Environment | ArcGIS 10.0 |
Geographic Reference for Tabular Data | Not Applicable |
Spatial Object Type | Vector |
Vendor Specific Object Types | point |
Tiling Scheme | state |
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Section 4 | Spatial Reference Information - - - - - - top |
Horizontal Coordinate Scheme | UTM |
Ellipsoid | GRS1980 |
Horizontal Datum | NAD83 |
Horizontal Units | meters |
Distance Resolution | meters |
Altitude Datum | n/a |
Altitude Units | n/a |
Depth Datum | n/a |
Depth Units | n/a |
Cell Width | 0 |
Cell Height | 0 |
Latitude Resolution | 0 |
Longitude Resolution | 0 |
UTM Zone Number | 15 |
SPCS Zone Identifier | 0 |
County Coordinate Zone Identifier | 0 |
Coordinate Offsets or Adjustments | n/a |
Map Projection Name | n/a |
Map Projection Parameters | n/a |
Other Coordinate System's Definition | n/a |
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Section 5 | Entity and Attribute Information - - - - - - top |
Entity and Attribute Overview | |
Entity and Attribute Detailed Citation | chempt | | | | RELATEID | Four 0's followed by 6 digit unique number for wells, or the Lake id from DNR Lakes Database + 2 digits for a site at a lake (01,02, etc.), or a 2-digit county number followed by 'A' followed by a 7-digit unique number for a spring | | AQUIFER_Q | Aquifer code. The aquifers are identified as "bdrk", "surf", "sb", "sw", "se", "sx",and "qu". | | TRITIUM | Tritium age of water sampled in well.
"RECENT"
"MIXED"
"VINTAGE" | | NO3 | Nitrite concentration in milligrams per liter reported as Nitrogen (values in table less than 10 parts per million are represented by a 0 value). | | ClvBr | Chloride to bromide ratio (values less than or equal to 300 are represented by a 0 value). | | C14 | Groundwater residence time in years, estimated by carbon-14 isotope analysis (Model estimated age in years rounded to 1 significant digit). | | TRIT_NUM | Tritium in Tritium Units (TU). |
Water chemistry data dictionary Online table displaying names and descriptions of fields that appear in 'chempt.' Note: This table lists all possible chemistry parameters in the County Geologica Atlas and Regional Hydrogeologic Assessment master database; some fields are not in this coverage. |
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Section 6 | Distribution Information - - - - - - top |
Publisher | Minnesota DNR Division of Ecological and Water Resources |
Publication Date | 2012 |
Contact Person Information | See Metadata Reference Information section, below |
Distributor's Data Set Identifier | CHEMPT |
Distribution Liability | This map was prepared from publicly available information only. Every reasonable effort has been made to ensure the accuracy of the factual data on which this map is based. However, the Department of Natural Resources does not warrant the accuracy, completeness, or any implied uses of these data. Users may wish to verify critical information; sources include both the references here and information on file in the offices of the Minnesota Geological Survey and the Department of Natural Resources. Every effort has been made to ensure the interpretation shown conforms to sound geologic and cartographic principles. This map should not be used to establish legal title, boundaries, or locations of improvements. |
Transfer Format Name | shapefile |
Transfer Format Version Number | |
Transfer Size | |
Ordering Instructions | Download ArcGIS shapefiles from:
Benton County Geologic Atlas, Part B: Metadata for GIS and Digital Data |
Online Linkage | Benton County Geologic Atlas, Part B: Metadata for GIS and Digital Data |
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Section 7 | Metadata Reference Information - - - - - - top |
Metadata Date | 2012-09-05 |
Contact Person Information | GIS Specialist, Atlas/Assessment Program
Minnesota DNR - Division of Ecological and Water Resources500 Lafayette Road
Saint Paul, MN 55155
Phone: (651) 259-5693
FAX: (651) 296-0445
E-mail: |
Metadata Standard Name | Minnesota Geographic Metadata Guidelines |
Metadata Standard Version | 1.2 |
Metadata Standard Online Linkage | http://www.lmic.state.mn.us/gc/stds/metadata.htm |
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