- Full Metadata - | - View Attributes - | - None available - | - Get Data -

## Mille Lacs County Aggregate Resource Evaluation - Overburden Model Data Points - millobmodl

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

### Metadata Summary

Originator | MN Department of Natural Resources, Division of Lands and Minerals, Mineral Potential Section, Aggregate Resource Mapping Program
Abstract | This dataset includes 654 data points used in a spatial analytical overburden model within Mille Lacs County, Minnesota using ESRI GIS software. This dataset and subsequent raster overburden model were captured and developed to assist in determining crushed stone potential in Mille Lacs County, MN. Overburden data were gathered from field observations, NRCS soil surveys, exploratory drillings, Minnesota Geological Survey (MGS) bedrock outcrops, as well as from the County Well Index database. Field observations of bedrock outcrops were gathered in the field, and later digitized using ArcGIS 9.2. Soil survey data were downloaded in 2005 and queried for bedrock outcrops. MGS bedrock outcrop data were obtained from Terry Boerboom at MGS in 2005. Field verified County Well Index (CWI) data were downloaded in October of 2006. CWI contains spatially located data of wells drilled throughout Minnesota. An additional County Well Index dataset was downloaded that contains unlocated well data. CWI 'unlocated' well data has not been field verified, however they have been approximately located using the Public Land Survey (PLS) information provided on the CWI well log. The MN DNR selected and approximately located relevant unlocated wells that either encountered bedrock or didn't encounter bedrock, but would help sink the overburden model, known as minima. The MN DNR located approximately these wells using the following sources: Minnesota Department of Health CWI online, Mille Lacs County plat maps, 2005 FSA Air Photos, www.mapquest.com, www.infospace.com, and Mille Lacs County Parcel Tax data found at http://morris.state.mn.us/tax/ To approximately locate a well, a combination of these sources were utilized to corroborate a location.
Browse Graphic | None available
Time Period of Content Date | 2006
Currentness Reference | Data were gathered throughout 2005 and 2006.
Access Constraints |
Use Constraints | Acknowledgement of the Minnesota Geological Survey (MGS) and the Minnesota Department of Health is appreciated for products derived from CWI data. CWI well data that was located approximately by the Minnesota Department of Natural Resources, Division of Lands and Minerals, should be referenced as such, since those data points were not located by the Minnesota Geological Survey and confirmed by the Minnesota Department of Health. The Minnesota Department of Natural Resource's Aggregate Resource Mapping Program located the points approximately, or relatively, using a number of resources explained in detail in the metadata abstract. It should also be noted that none of these points were located absolutely at the well source, thus is why they are located approximately. If you view errors in this dataset please inform the metadata's contact individual seen below.
Distributor Organization | Minnesota Department of Natural Resources, Division of Lands and Minerals
Ordering Instructions | 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.
Online Linkage | Click here to download data. (See Ordering Instructions above for details.) By clicking here, you agree to the notice in "Distribution Liability" in Section 6 of this metadata.

### Full Metadata

## Mille Lacs County Aggregate Resource Evaluation - Overburden Model Data Points - millobmodl

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 | MN Department of Natural Resources, Division of Lands and Minerals, Mineral Potential Section, Aggregate Resource Mapping Program
Title | Mille Lacs County Aggregate Resource Evaluation - Overburden Model Data Points - millobmodl
Abstract | This dataset includes 654 data points used in a spatial analytical overburden model within Mille Lacs County, Minnesota using ESRI GIS software. This dataset and subsequent raster overburden model were captured and developed to assist in determining crushed stone potential in Mille Lacs County, MN. Overburden data were gathered from field observations, NRCS soil surveys, exploratory drillings, Minnesota Geological Survey (MGS) bedrock outcrops, as well as from the County Well Index database. Field observations of bedrock outcrops were gathered in the field, and later digitized using ArcGIS 9.2. Soil survey data were downloaded in 2005 and queried for bedrock outcrops. MGS bedrock outcrop data were obtained from Terry Boerboom at MGS in 2005. Field verified County Well Index (CWI) data were downloaded in October of 2006. CWI contains spatially located data of wells drilled throughout Minnesota. An additional County Well Index dataset was downloaded that contains unlocated well data. CWI 'unlocated' well data has not been field verified, however they have been approximately located using the Public Land Survey (PLS) information provided on the CWI well log. The MN DNR selected and approximately located relevant unlocated wells that either encountered bedrock or didn't encounter bedrock, but would help sink the overburden model, known as minima. The MN DNR located approximately these wells using the following sources: Minnesota Department of Health CWI online, Mille Lacs County plat maps, 2005 FSA Air Photos, www.mapquest.com, www.infospace.com, and Mille Lacs County Parcel Tax data found at http://morris.state.mn.us/tax/ To approximately locate a well, a combination of these sources were utilized to corroborate a location.
Purpose | To summarize overburden data, including depth and stratigraphy, from all viable sources, to assist in the development of an overburden model and to interpret and map crush stone potential for Mille Lacs County, MN.
Time Period of Content Date | 2006
Currentness Reference | Data were gathered throughout 2005 and 2006.
Progress | Complete
Maintenance and Update Frequency | None planned
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 | bedrock, overburden, spatial modeling, county well index, crush stone potential
Theme Keyword Thesaurus |
Access Constraints |
Use Constraints | Acknowledgement of the Minnesota Geological Survey (MGS) and the Minnesota Department of Health is appreciated for products derived from CWI data. CWI well data that was located approximately by the Minnesota Department of Natural Resources, Division of Lands and Minerals, should be referenced as such, since those data points were not located by the Minnesota Geological Survey and confirmed by the Minnesota Department of Health. The Minnesota Department of Natural Resource's Aggregate Resource Mapping Program located the points approximately, or relatively, using a number of resources explained in detail in the metadata abstract. It should also be noted that none of these points were located absolutely at the well source, thus is why they are located approximately. If you view errors in this dataset please inform the metadata's contact individual seen below.
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 | Top of page
Attribute Accuracy | The location accuracy of these points varies based on source and methodology. The attribute field, 'Confidence', attempts to describe generally the location accuracy for each point based on its source. See millobmodl_att table for more detail regarding the 'Confidence' and 'Modl_Sourc' field. Additionally, see the lineage section in the metadata for further information how the data was acquired and mapped.
Logical Consistency |
Completeness |
Horizontal Positional Accuracy |
Vertical Positional Accuracy | Not applicable.
Lineage | Field Observations of bedrock outcrops were mapped in the field on to 1:24000 Topographic maps and later digitized onto Digital Raster Graphics (DRGs) at 1:24000. CWI located data is maintained by the Minnesota Geological Survey. For further information about this source visit the Minnesota Geological Survey CWI page at: http://www.geo.umn.edu/mgs/cwi.html For CWI data located approximately by the Minnesota DNR's Aggregate Resource Mapping Program, the following sources were used: Minnesota Geological Survey Unlocated_Wells shapefile and stratigraphy database downloaded in 2005; The Minnesota Department of Health (DOH) CWI online to display well name, well address, township, range, section, subsection, and stratigraphy information. This data, if available was used to compare to additional sources; Mille Lacs County plat atlas was used to search for parcel owners, as well as, a locational reference for local street number index; 2005 FSA Air Photos were used as a locational reference to compare with www.mapquest.com address results, and a location reference when digitizing at a 1:1,000 - 1:5,000 scale; www.mapquest.com was used to display address locations that were checked against plat books for accuracy; www.infospace.com was used to locate and corroborate a well owner's address (usually the well name from DOH corresponds to the property owner's name); Mille Lacs County Parcel Tax data was used to locate and corroborate a well owner's address. This site can be found at http://morris.state.mn.us/tax For a point to be digitized, there needs to be agreement between multiple sources. Here is an example of this methodology. The native dataset from MGS (CWI_Unlocated) is located using the township, range, section, direction, and subsection fields, though not all of these fields are always known. This is called the initial location. This initial location can be near (within 40 acres) the actual well location, or quite far away (townships away). This initial point could be hyperlinked to the corresponding well record on the DOH web page. This allowed the user to analyze data quicker than using the cwistrat.dbf. The DOH online page may provide the well name and well address, though not always together. For some records, neither of them are given attributes. In this case, it would be very difficult to locate it relatively, since you could never corroborate the initial location. The DOH may also display stratigraphy data. It can be used to show stratigraphic agreement with known located wells within close proximity to the unlocated well. The goal is to find agreement between the DOH online and the other sources being used like, www.infospace.com, Mille Lacs plat maps, Mille Lacs parcel database, www.mapquest.com, and other bedrock data sources. How much agreement is needed to determine a new digitized point is at times quite subjective. However, the goal was to have there be at least three agreements between sources.
Source Scale Denominator | 24000
Section 3 | Spatial Data Organization Information | Top of full metadata | Top of page
Native Data Set Environment | ArcGIS 9.2 and Arcview 3.3 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 | Top of full metadata | Top of page
Entity and Attribute Overview | This dataset consists of Mille Lacs County's overburden model source locations, unique model id, source type, surface elevation, bedrock and minima elevation, overburden depth, Geologic description of bedrock or minima, confirmation of bedrock, confidence of well location, CWI relateid, and if bedrock can be used for construction aggregate. ArcGIS specific fields include field id (unique id assigned by the ESRI software) and shape (feature type = point).
Entity and Attribute Detailed Citation | millobmodl_att.htm Attribute values can be found in the following table: millobmodl_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.
Section 6 | Distribution Information | Top of full metadata | Top of page
Publisher | MN Department of Natural Resources, Division of Lands and Minerals, Mineral Potential Section, Aggregate Resource Mapping Program
Publication 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
Distributor's Data Set Identifier | Mille Lacs County Aggregate Resource Evaluation
Distribution Liability | The Minnesota Department of Natural Resources makes no representation or warranties, express or implied, with respect to the reuse of data provided herewith, regardless of its format or the means of its transmission. There is no guarantee or representation to the user as to the accuracy, currency, suitability, or reliability of this data for any purpose. The user accepts the data 'as is', and assumes all risks associated with its use. By accepting this data, the user agrees not to transmit this data or provide access to it or any part of it to another party unless the user shall include with the data a copy of this disclaimer. The Minnesota Department of Natural Resources assumes no responsibility for actual or consequential damage incurred as a result of any user's reliance on this data.
Transfer Format Name |
Transfer Format Version Number |
Transfer Size | mb for data, mb for associated maps
Ordering Instructions | 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.
Online Linkage | Click here to download data. (See Ordering Instructions above for details.) By clicking here, you agree to the notice in "Distribution Liability" above.
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