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Mille Lacs County Aggregate Resource Evaluation - County Well Index (CWI) Well Locations, Mille Lacs County, 2005 - millcwiwells

This page last updated: 2008
Metadata created using Minnesota Geographic Metadata Guidelines


Metadata Summary

Originator

Minnesota Geological Survey

Abstract

This dataset consists of the locations of wells drilled within Mille Lacs County. The County Well Index (CWI) is a database that contains information about wells drilled throughout Minnesota. In this case, a subset of the locations were used to look at the geological descriptions of these wells. The original CWI file was downloaded from the Minnesota Geological Survey (MGS) in 2005.

Browse Graphic

None available

Time Period of Content Date

2005

Currentness Reference

2005

Access Constraints

 

Use Constraints

Acknowledgement of the Minnesota Geological Survey and Minnesota Department of Health are appreciated for products derived from these data.

Distributor Organization

Minnesota Geological Survey

Ordering Instructions

Go to the website of the Minnesota Geological Survey, http://www.geo.umn.edu/mgs to find the link describing CWI and to download the current version of CWI. To download this subset of the CWI data, which was used for this project and downloaded in 2006, go to http://www.dnr.state.mn.us/lands_minerals/aggregatemaps.html where it is part of the milldata.zip file under Mille Lacs County.

Online Linkage

None available


Full Metadata

Mille Lacs County Aggregate Resource Evaluation - County Well Index (CWI) Well Locations, Mille Lacs County, 2005 - millcwiwells

Go to Section:
1. Identification Information
2. Data Quality Information
3. Spatial Data Organization Information
4. Spatial Reference Information
5. Entity and Attribute Information
6. Distribution Information
7. Metadata Reference Information

 

Section 1

Identification Information

 

Top of page

Originator

Minnesota Geological Survey

Title

Mille Lacs County Aggregate Resource Evaluation - County Well Index (CWI) Well Locations, Mille Lacs County, 2005 - millcwiwells

Abstract

This dataset consists of the locations of wells drilled within Mille Lacs County. The County Well Index (CWI) is a database that contains information about wells drilled throughout Minnesota. In this case, a subset of the locations was used to look at the geological descriptions of these wells. The original CWI file was downloaded from the Minnesota Geological Survey (MGS) in 2006.

Purpose

This dataset contains the locations of the wells that were used for this study. Approximately 766 of the 905 wells contained geological descriptions that were used in this study.

Time Period of Content Date

2005

Currentness Reference

2005

Progress

Complete

Maintenance and Update Frequency

The CWI database maintained by MGS is updated quarterly. This subset was downloaded in 2006 and provides part of the background information that was used in developing the aggregate resource mapping units in Mille Lacs County.

Spatial Extent of Data

Mille Lacs County, Minnesota

Bounding Coordinates

-93.81
-93.43
46.25
45.55

Place Keywords

Mille Lacs County, Minnesota

Theme Keywords

CWI, wells, county well index, geological descriptions

Theme Keyword Thesaurus

 

Access Constraints

 

Use Constraints

Acknowledgement of the Minnesota Geological Survey and Minnesota Department of Health are appreciated for products derived from these data.

Contact Person Information

Aggregate Resource Mapping Program, Industrial Minerals Geologist or GIS Specialist
Minnesota Department of Natural Resources, Division of Lands and Minerals
500 Lafayette Road
St. Paul, MN 55155-4045
Phone: 651-259-5959
FAX: 651-296-5939
E-mail: aggregate.map@dnr.state.mn.us

Browse Graphic

None available

Browse Graphic File Description

 

Associated Data Sets

The Aggregate Resource Mapping Program's datasets for Mille Lacs County are included in the file milldata.zip, accessible from the MN DNR Aggregate Mapping web page: http://www.dnr.state.mn.us/lands_minerals/aggregatemaps.html
The dataset is also available as aggregate resource data layers stored at drive:\data\resource on the CD (where 'drive' is the CD reader or writer drive on the PC). The datasets include data on sand and gravel potential, crushed stone potential, overburden model source points, field observations, aggregate pits and quarries, County Well Index (CWI) data sources, field observation's sieve database, and MN DOT ASIS pit quality database.

In addition, selected Mille Lacs aggregate resource datasets can be viewed in the Aggregate Resource Mapping Program's Aggregate Mapper at:
http://www.dnr.state.mn.us/lands_minerals/aggregate_maps/online_maps/index.html
Aggregate Mapper allows users with little to no GIS experience the ability to work with GIS data. The site can display spatial and tabular aggregate resource data such as sand and gravel potential, crushed stone potential, field observations, and gravel pits. This information can be overlaid on a variety of reference information from Web Mapping Services (WMS) sources like 1:24,000-scale DRGs (digital topographic maps), 1991 black-and-white air photos, and 2003-04 Farm Service Agency color air photos.

 

Section 2

Data Quality Information

Top of full metadata

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Attribute Accuracy

 

Logical Consistency

 

Completeness

The locational accuracy of these points varies. Some of the points were field checked down to the meter, while others are located to the centroid of a 40-acre parcel.  Download CWI from the Minnesota Geological Survey for a complete and up-to-date version and up to date metadata and full attribute tables.

Horizontal Positional Accuracy

 

Vertical Positional Accuracy

Not applicable.

Lineage

The geological descriptions associated with the well locations were used to make interpretations and test interpretations about the aggregate resources, glacial geology, and bedrock geology of the area.

Source Scale Denominator

 

 

Section 3

Spatial Data Organization Information

Top of full metadata

Top of page

Native Data Set Environment

ArcGIS 9.2 from ESRI

Geographic Reference for Tabular Data

 

Spatial Object Type

Point

Vendor Specific Object Types

Point

Tiling Scheme

Mille Lacs County

 

Section 4

Spatial Reference Information

Top of full metadata

Top of page

Horizontal Coordinate Scheme

UTM

Ellipsoid

GRS80

Horizontal Datum

NAD83

Horizontal Units

Meters

Distance Resolution

 

Altitude Datum

Not applicable

Depth Datum

Not applicable

UTM Zone Number

15E

 

Section 5

Entity and Attribute Information

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Entity and Attribute Overview

These points represent the locations of individual wells drilled throughout Mille Lacs County.

Entity and Attribute Detailed Citation

millcwiwells_att.htm

Attribute values can be found in the table millcwiwells_att.htm. If this table hotlink cannot be found by your browser, you can find this file stored in the same location (i.e., drive:\docs) as this metadata record.

millcwiwells.shp contains a field (doh_path) that is used to hyperlink to the Minnesota Department of Health's County Well Index Online web page. This web page provides detailed information (i.e., Drillers Description, Stratigraphy, etc.) regarding the associated well, via its 'relateid' or unique id. The shapefile can be hyperlinked utilizing ESRI software like ArcView 3.3 and ArcGIS 9.

An additional table, millcwistrat.dbf, is a subset of the STRAT table of the CWI database. The millcwiwells shapefile relates to the millcwistrat.dbf table as a one-to-many relate on the relateid field. The additional table contains only those fields that were considered directly applicable to developing aggregate resource mapping units for this project. The descriptions were made by different drillers and geologists, with the information ranging from very good and complete to very poor and vague. Descriptions can vary from well to well, due to different individuals completing the well logging. As an example of the detail found in these descriptions: detailed descriptions often cover 5 to 10 feet of thickness per glacial material type or bedrock type. Less detailed descriptions may say 0-240 feet glacial drift and 240-360 feet sandstone.

The definition of the fields found in millcwistrat.dbf are included in the millcwiwells_att.htm file.

 

Section 6

Distribution Information

Top of full metadata

Top of page

Publisher

Minnesota Geological Survey

Publication Date

Periodically revised

Contact Person Information



Minnesota Geological Survey
2642 University Avenue West
St. Paul, MN 55114-1057
Phone: 612-627-4782
FAX: 612-627-4778
E-mail: mgs@umn.edu

Distributor's Data Set Identifier

CWI

Distribution Liability

 

Transfer Format Name

 

Transfer Format Version Number

 

Transfer Size

 

Ordering Instructions

Go to the website of the Minnesota Geological Survey, http://www.geo.umn.edu/mgs to find the link describing CWI and to download the current version of CWI. To download this subset of the CWI data, which was used for this project and downloaded in 2006, go to http://www.dnr.state.mn.us/lands_minerals/aggregatemaps.html where it is part of the milldata.zip file under Mille Lacs County.

Online Linkage

None available

 

Section 7

Metadata Reference Information

Top of full metadata

Top of page

Metadata Date

2008

Contact Person Information

Aggregate Resource Mapping Program, Industrial Minerals Geologist or GIS Specialist
Minnesota Department of Natural Resources, Division of Lands and Minerals
500 Lafayette Road
St. Paul, MN 55155-4045
Phone: 651-259-5959
FAX: 651-296-5939
E-mail: aggregate.map@dnr.state.mn.us

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

 


This page last updated: 2008