chempt
Go to Section:- Overview
- Data Quality
- Data Organization
- Coordinate System
- Attributes
- Distribution - Get Data
- Metadata Reference
Section 1: Overview
Originator:Minnesota Department of Natural Resources
Title:
chempt
Abstract:
Data includes 91 wells sampled in Renville County, Minnesota for natural chemistry of groundwater by DNR staff for major cations and anions, trace elements, tritium, stable isotopes of hydrogen and oxygen, and carbon-14. One lake was sampled for tritium and stable isotopes of hydrogen and oxygen.
Purpose:
Renville County Geologic Atlas, Part B, County Geologic Atlas Series C-28
Time Period of Content Date:
Currentness Reference:
data were acquired or accessed between 2014 and 2015
Progress:
Complete
Maintenance and Update Frequency:
None Planned
Spatial Extent of Data:
Renville County, Minnesota
Bounding Coordinates:
-95.49
-94.48
44.90
44.45
Place Keywords:
Renville County, Minnesota
Theme Keywords:
groundwater, water chemistry, residence time, stable isotopes, 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 Minnesota 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:
Holly Johnson,
GIS Specialist
Minnesota Department of Natural Resources
500 Lafayette Rd
St. Paul,
MN
55155-4025
Phone: 651-259-5693
Email: holly.je.johnson@state.mn.us
Browse Graphic:
None available
Associated Data Sets:
Renville County Geologic Atlas, Part A, County Geologic Atlas Series C-28, published by the Minnesota Geological Survey (MGS), 2013. More information and downloadable data for Part A are available on the MGS data site: http://www.mngs.umn.edu/county_atlas/countyatlas.htm
Section 2: Data Quality
Attribute Accuracy:
1:100,000
Logical Consistency:
Data are topologically correct using ArcGIS 10.4.1
Completeness:
Complete
Horizontal Positional Accuracy:
Vertical Positional Accuracy:
NA
Lineage:
This file primarily contains well locations and associated inorganic and isotope chemistry sample analyses for wells sampled for the Renville County Geologic Atlas, Part B. Data also include a lake sample. Some data are available in table format only (chempt_other).
Chemistry data are managed in a MS Access database. Excel tables of chemistry data are available online for download at http://www.dnr.state.mn.us/waters/groundwater_section/mapping/chemdataaccess.html.
Section 3: Spatial Data Organization (not used in this metadata)
Section 4: Coordinate System
Horizontal Coordinate Scheme:
Universal Transverse Mercator
UTM Zone Number:
15
Horizontal Datum:
NAD83
Horizontal Units:
meters
Vertical Datum:
Vertical Units:
Depth Datum:
Depth Units:
Section 5: Attributes
Overview:
The water chemistry data dictionary, an online table displaying names and descriptions of fields that appear in chempt, is found at http://www.dnr.state.mn.us/waters/groundwater_section/mapping/chemdatadict.html
The water chemistry data dictionary lists all possible chemistry parameters in the County Geologic Atlas and Regional Hydrogeologic Assessment master database; some fields are not in this coverage.
Detailed Citation:
Table Detail:
chempt| Field Name | Valid Values | Definition | Definition Source |
|---|
| 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.). | |
| AQUIFER | - | County Well Index aquifer code. | |
| AQUIFER_Q | - | Quaternary aquifer name, usually mapped at county scale. Quaternary aquifers are named after surficial and buried sand units shown on Plate 4, Part A. Bedrock aquifers are represented by "bdrk". | |
| XSEC | - | Cross section number associated with well, letter indicates published hydrogeologic cross section shown on Part B. | |
| TRITIUM | - | Tritium in Tritium Units (TU). | |
| TRIT_AGE | enumerated | Residence time estimated from tritium value. | |
| recent | 8 to 15 TU | |
| mixed | greater than 1 TU and less than 8 TU | |
| vintage | less than or equal to 1 TU | |
| C14_YEARS | - | Groundwater residence time in years, estimated by carbon-14 isotope analysis (model estimated age in years rounded to 1 significant digit) | |
| CHLORIDE | - | Chloride concentration in milligrams per liter | |
| BROMIDE | - | Bromide concentration in milligrams per liter | |
| CL_BR | - | Chloride Bromide ratio | |
| NITRATE_N | - | Nitrate concentration in milligrams per liter reported as Nitrogen | |
| DEUTERIUM | - | Deuterium (permil) | |
| OXYGEN_18 | - | Oxygen-18 (permil) | |
| ARSENIC | - | Arsenic in micrograms per liter | |
| MANGANESE | - | Manganese in micrograms per liter | |
| DATASOURCE | - | Source of data | |
| PROJECT | - | Project that the data was collected for. | |
| SITETYPE | - | Type of site where water sample was collected. | |
Section 6: Distribution
Publisher:
Minnesota Department of Natural Resources, Ecological and Water Resources Division
Publication Date:
08/23/2017
Contact Person Information:
Holly Johnson,
GIS Specialist
Minnesota Department of Natural Resources
500 Lafayette Rd
St. Paul,
MN
55155-4025
Phone: 651-259-5693
Email: holly.je.johnson@state.mn.us
Distributor's Data Set Identifier:
chempt
Distribution Liability:
These data were prepared from publicly available information only. Every reasonable effort has been made to ensure the accuracy of the factual data on which these files are 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 Department of Natural Resources.
Online Linkage: I AGREE
to the notice in "Distribution Liability" above. Clicking to agree will either begin the download process, link to a service, or provide more instructions. See "Ordering Instructions" above for details.
Section 7: Metadata Reference
Metadata Date:
07/25/2018
Contact Person Information:
Holly Johnson,
GIS Specialist
Minnesota Department of Natural Resources
500 Lafayette Rd
St. Paul,
MN
55155-4025
Phone: 651-259-5693
Email: holly.je.johnson@state.mn.us
Metadata Standard Name:
Minnesota Geographic Metadata Guidelines
Metadata Standard Version:
1.2