Metadata: aqbdsnpy

aqbdsnpy

This page last updated: 09/12/2017
Metadata created using Minnesota Geographic Metadata Guidelines


Go to Section:
  1. Overview
  2. Data Quality
  3. Data Organization
  4. Coordinate System
  5. Attributes
  6. Distribution - Get Data
  7. Metadata Reference

Section 1: Overview

Originator:Minnesota Department of Natural Resources

Title: aqbdsnpy

Abstract: Buried sand and gravel aquifer and bedrock surface pollution sensitivity in Sherburne County, Minnesota

Purpose: Sherburne County Geologic Atlas, Part B, County Geologic Atlas Series C-32

Time Period of Content Date:

Currentness Reference: data were acquired or accessed between 2013 and 2014

Progress: Complete

Maintenance and Update Frequency: None Planned

Spatial Extent of Data: Sherburne County, Minnesota

Bounding Coordinates: -94.15
-93.51
45.57
45.24

Place Keywords: Sherburne County, Minnesota

Theme Keywords: pollution sensitivity, buried sand and gravel aquifer, buried sand aquifer, bedrock surface

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: Sherburne County Geologic Atlas, Part A, County Geologic Atlas Series C-32, published by the Minnesota Geological Survey (MGS), 2013. More information and downloadable data for Part A 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: File was snapped to statewide 30 meter LiDAR data.

Vertical Positional Accuracy: NA

Lineage: Sensitivity calculations were made based on the cumulative thickness of fine-grained sediment overlying the top of an aquifer or the bedrock surface. The cumulative thickness was calculated from the till thickness data from Part A provided by the MGS.

The pollution sensitivity maps are based on the concept of mapping focused recharge areas where surface water can rapidly move downward through interconnected sand and gravel layers. The fine-grained sediment between aquifers is assumed to act as an aquitard that restricts the vertical movement of groundwater between aquifers.

Raster calculator within Arcmap 10.2 was used to calculate the cumulative fine-grained sediment thickness. Rasters were reclassified and converted to polygons.

The procedure document for determining buried aquifer and bedrock surface pollution sensitivity based on cumulative fine-grained sediment thickness is available at http://files.dnr.state.mn.us/waters/groundwater_section/mapping/gw/gw02_ps-babs.pdf

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:
aqbdsnpy
Field NameValid ValuesDefinitionDefinition Source
AQUIFER_Q
-
Quaternary aquifer name, usually mapped at county scale. Quaternary aquifers are named after buried sand units shown on Plate 5, Part A. Bedrock aquifers are represented by "bdrk".
AQUIFER
-
County Well Index aquifer code.
RATINGenumeratedrating based on cumulative thickness of fine-grained sediment in feet
VHvery high: 10 or less
Hhigh: >10 to 20
Mmoderate: >20 to 30
Llow: >30 to 40
VLvery low: >40

Section 6: Distribution

Publisher: Minnesota Department of Natural Resources, Ecological and Water Resources Division

Publication Date: 09/12/2017

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: aqbdsnpy

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.

Ordering Instructions: Download zip file of metadata and feature classes by clicking "I AGREE" below.

PDFs of the Sherburne County Geologic Atlas plates can be downloaded at: http://www.dnr.state.mn.us/waters/programs/gw_section/mapping/platesum/shercga.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: 09/12/2017

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

Metadata Standard Name: Minnesota Geographic Metadata Guidelines

Metadata Standard Version: 1.2



This page last updated: 09/12/2017
Go back to top