Section 1 | Overview | |||
Originator | Minnesota Department of Natural Resources | |||
Title | POTSFCLN | |||
Abstract | Modeled potentiometric contour elevations of the bedrock aquifers in Chisago County, Minnesota. | |||
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 | bedrock aquifer, potentiometric surface contours | |||
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 | Tunnel City Potentiometric Contour Lineage
The potentiometric surface contours were developed using static water level data from the County Well Index (CWI) for wells drilled in the CTCG. Four wells were removed as they were outliers. The CTCG wells were combined with St. Croix River elevation points and a raster was created using topo to raster. Raster created using extract by mask with MGS bedrock polygon areas (queried for the Tunnel City) as the mask. Contours were generated using the Spatial Analyst contour tool. Contours were then modified by hand by adding and removing vertices. Wonewoc Potentiometric Contour Lineage The potentiometric surface contours were developed using static water level data from the County Well Index (CWI) for wells drilled in the CWOC. Four wells were removed as they were outliers. The CTCG wells were combined with St. Croix River elevation points and a raster was created using topo to raster. Raster created using extract by mask with MGS bedrock polygon areas (queried for the Wonewoc and Tunnel City) as the mask. Contours were generated using the Spatial Analyst contour tool. Contours were then modified by hand by adding and removing vertices. Mt. Simon Potentiometric Contour Lineage The potentiometric surface contours were developed using static water level data from the County Well Index (CWI) for wells drilled in the CTCG. Six wells were removed as they were outliers. The CTCG wells were combined with St. Croix River elevation points and a raster was created using topo to raster. Raster created using extract by mask with MGS bedrock polygon areas (queried for the Tunnel City, Wonewoc and Mt. Simon) as the mask. Contours were generated using the Spatial Analyst contour tool. Contours were then modified by hand by adding and removing vertices. | |||
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: |
POTSFCLN | |||
Field Name | Valid Values | Definition | Definition Source |
---|---|---|---|
AQUIFER | The bedrock aquifers are identified as either "CMTS", "CTCG", or "CWOC". | ||
CONTOUR | Modeled potentiometric surface contours in feet above sea level |
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 | POTSFCLN | |||
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 |