Crow Wing County Geologic Atlas Part B

AQELPY metadata

Modeled Elevation of the top of the Buried Aquifers

Description of data created for
Crow Wing County Geologic Atlas, Part B
County Geologic Atlas Series C-16

Metadata created using Minnesota Geographic Metadata Guidelines version 1.2
Metadata content prepared 2009-01-29

Section 1

Identification Information - - - - - - top

Originator

Minnesota DNR Waters - County Geologic Atlas and Regional Hydrogeologic Assessment Program

Title

AQELPY

System Name

Abstract

Modeled elevation of the top of the buried aquifers in Crow Wing County, Minnesota

Purpose

County Geologic Atlas and Regional Hydrogeologic Assessment Program,
Crow Wing County Geologic Atlas, Part B, County Geologic Atlas Series C-16

Time Period of Content Date

June, 2007

Currentness Reference

Publication date

Progress

Complete

Maintenance and Update Frequency

None Planned

Spatial Extent of Data

Crow Wing County, Minnesota

Bounding Coordinates

Place Keywords

Minnesota, Crow Wing County

Theme Keywords

aquifer elevation, buried aquifer

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

Crow Wing County Geologic Atlas, Part A, County Geologic Atlas Series C-16, published by the Minnesota Geological Survey, 2004. More information and downloadable data for Part A available on the MGS ftp site.

Section 2

Data Quality Information - - - - - - top

Attribute Accuracy

Logical Consistency

Data are topologically correct using ArcGIS 9.2

Completeness

Complete

Horizontal Positional Accuracy

unknown

Vertical Positional Accuracy

not applicable

Lineage

The primary data used to construct the elevation DEM grid files were derived from well logs with verified locations in the County Well Index (CWI) database managed by the Minnesota Department of Health and the Minnesota Geological Survey. Using a custom ArcGIS 9 extension (DNR Waters Stick Diagrams) 75 west-east geologic cross sections were created and then interpreted by Todd Petersen. Todd Petersen then digitized the interpreted stratigraphic contacts as line files in ArcView 3.3. Using another custom DNR extension (DNR Waters get XYZ points) the vertices of the shapefile lines were converted to point shapefiles that also have elevation above MSL as an attribute. To create the aquifer elevation file the points that define the top of each individual aquifer layer were selected. The selected set of points were converted to a separate shapefile and interpolated by Todd Petersen using a spline tension method with default parameters in Arc GIS 9.2 into a grid file. The elevation grid files were clipped using the boundary outline file for each individual aquifer. Greg Massaro converted the final raster into a polygon shapefile.

Source Scale Denominator

100000

Section 3

Spatial Data Organization Information - - - - - - top

Native Data Set Environment

ArcGIS 9.2

Geographic Reference for Tabular Data

Not Applicable

Spatial Object Type

Vector

Vendor Specific Object Types

polygon

Tiling Scheme

state

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

Section 5

Entity and Attribute Information - - - - - - top

Entity and Attribute Overview

Entity and Attribute Detailed Citation

HTML Table (Not Available)

Section 6

Distribution Information - - - - - - top

Publisher

Minnesota DNR Waters

Publication Date

2007

Contact Person Information

See Metadata Reference Information section, below

Distributor's Data Set Identifier

aqelpy

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 ARCVIEW shapefiles from:
Crow Wing County Geologic Atlas, Part B: Metadata for GIS and Digital Data

Online Linkage

Crow Wing County Geologic Atlas, Part B: Metadata for GIS and Digital Data

Section 7

Metadata Reference Information - - - - - - top

Metadata Date

2009-01-21

Contact Person Information

GIS Specialist, Atlas/Assessment Program
Minnesota DNR - Division of Waters
500 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