Section 1 | Overview | |||
Originator | Minnesota Department of Natural Resources | |||
Title | GWDPPY | |||
Abstract | Countywide modeled depth to water-table | |||
Purpose | Chisago County Geologic Atlas, Part B, County Geologic Atlas Series C-22 | |||
Time Period of Content Date | ||||
Currentness Reference | data was acquired or accessed between 2010 and 2012 | |||
Progress | Complete | |||
Maintenance and Update Frequency | None Planned | |||
Spatial Extent of Data | Chisago County, Minnesota | |||
Bounding Coordinates | -97.27 -89.4 49.4 43.4 | |||
Place Keywords | Chisago County, Minnesota | |||
Theme Keywords | depth to water-table | |||
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 | Chisago County Geologic Atlas, Part A, County Geologic Atlas Series C-22, published by the Minnesota Geological Survey, 2010. More information and downloadable data for Part A is available on the MGS data site: http://www.mngs.umn.edu/county_atlas/countyatlas.htm | |||
Section 2 | Data Quality | |||
Attribute Accuracy | ||||
Logical Consistency | Data are topologically correct using ArcGIS 10.2 | |||
Completeness | Complete | |||
Horizontal Positional Accuracy | NA | |||
Vertical Positional Accuracy | NA | |||
Lineage | Investigations begin with a review of existing information, such as earlier geologic maps, soil maps, hydrologic reports, and information provided by well drillers. Minnesota Geological Survey staff review and interpret driller's logs, and enter the data into the County Well Index (CWI), an interactive database of water-well information.
Collection of data from the field: Field studies are conducted to measure static water level elevations in wells and chemistry of selected wells. These studies, combined with pre-existing data, are used to create models of water-table and bedrock hydrogeology (elevation, potentiometric surface, flow direction, aquifer parameters), and sensitivity of groundwater system to pollution. Creation of GIS layers: Using a variety of techniques, data are converted into ArcGIS shapefiles, grids, or feature classes for cartographic display and spatial analysis. Metadata for individual layers contain more detailed lineage information. | |||
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 | |||
Section 5 | Attributes | |||
Overview | ||||
Detailed Citation | ||||
Table Detail: |
GWDPPY | |||
Field Name | Valid Values | Definition | Definition Source |
---|---|---|---|
DEPTH | representing modeled water-table depth in feet below land surface: 0 to 10, >10 to 20, >20 to 50, >50 to 100, >100 to 200, |
Section 6 | Distribution | |||
Publisher | Minnesota Department of Natural Resources, Ecological and Water Resources Division | |||
Publication Date | 2014 | |||
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 | GWDPPY | |||
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 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. | |||
Ordering Instructions | Download zip file of metadata, shapefiles, and feature classes by clicking "I AGREE" below.
The geodatabase (Chisago_c22.gdb) is the preferred format. Shapefiles are also included (Chisago_c22_shape) for those who require that data format. The shapefiles were converted from feature classes in a file geodatabase. Because some of the data contain null values, which are not supported by shapefiles, we suggest using the shapefiles with caution. The conversion to shapefiles changes null values to zeros or blanks and makes querying the data more difficult. PDFs of the Chisago County Geologic Atlas plates can be downloaded at: http://www.dnr.state.mn.us/waters/programs/gw_section/mapping/platesum/chiscga.html | |||
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 | 07/24/2015 | |||
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 | |||
Metadata Standard Online Linkage | http://www.mngeo.state.mn.us/committee/standards/mgmg/metadata.htm |