Regional Hydrogeologic Assessment - Anoka Sand Plain, Minnesota

This page last updated: 04/06/2007
Metadata created using Minnesota Geographic Metadata Guidelines


Metadata Summary

Originator Minnesota Department of Natural Resources and Minnesota Geological Survey
Abstract A County Geologic Atlas is a systematic study of a county's geologic and ground water resources. Geologic studies include both near-surface deposits and bedrock. Ground water studies include flow systems, aquifer capacity, and ground water chemistry. In some areas sand and gravel deposits, sinkholes, or other features are studied. Interpretation of sensitivity to pollution is also part of an atlas. The information is organized, analyzed, and displayed using geographic information technology.

A Regional Hydrogeologic Assessment (RHA) is similar to a County Geologic Atlas in that both geology and ground water are studied. However, a Regional Hydrogeologic Assessment covers a larger area, typically four to nine counties, in less detail. The RHA emphasizes near-surface geologic, ground water, and pollution sensitivity mapping.
Browse Graphic View a sample of the data.
Time Period of Content Date 1993
Currentness Reference Geologic Maps were derived based on information available during the period 1991-1993.
Access Constraints None
Use Constraints
Distributor Organization Land Management Information Center (LMIC)
Ordering Instructions This data set is distributed on the internet by clicking below after Online Linkage. Doing so will tell your browser to start downloading a self-extracting 'ZIP' file which will contain the following:

- Arc Export files (.e00) of coverages and/or INFO export files (.e00)
- Associated data tables or code files (.txt format), where necessary
- Metadata (.htm) file for the dataset
- NOTICE.RTF, an important notice about this data set that can be read by most word processing software, and an ascii text version of the same notice (NOTICE.TXT)

After downloading this self-extracting 'zip' file (which will have an 'exe' extension), simply execute (run) the file. (For example, you can double click it from Windows Explorer or File Manager). Doing this will automatically extract the files described above. You can then delete file types that you do not need, if any.
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

Regional Hydrogeologic Assessment - Anoka Sand Plain, Minnesota

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 Department of Natural Resources and Minnesota Geological Survey
Title Regional Hydrogeologic Assessment - Anoka Sand Plain, Minnesota
Abstract A County Geologic Atlas is a systematic study of a county's geologic and ground water resources. Geologic studies include both near-surface deposits and bedrock. Ground water studies include flow systems, aquifer capacity, and ground water chemistry. In some areas sand and gravel deposits, sinkholes, or other features are studied. Interpretation of sensitivity to pollution is also part of an atlas. The information is organized, analyzed, and displayed using geographic information technology.

A Regional Hydrogeologic Assessment (RHA) is similar to a County Geologic Atlas in that both geology and ground water are studied. However, a Regional Hydrogeologic Assessment covers a larger area, typically four to nine counties, in less detail. The RHA emphasizes near-surface geologic, ground water, and pollution sensitivity mapping.
Purpose County Geologic Atlas and Regional Hydrogeologic Assessment information is used in planning and environmental protection efforts at all levels of government. Wellhead protection and well-sealing programs are examples of local programs that need geologic and ground water information. The information is also used by businesses and the general public.
Time Period of Content Date 1993
Currentness Reference Geologic Maps were derived based on information available during the period 1991-1993.
Progress Complete
Maintenance and Update Frequency None planned
Spatial Extent of Data Anoka Sand Plain Area of Minnesota, comprising all or portions of the counties of Anoka, Chisago, Isanti, and Sherburne.
Bounding Coordinates -94.17
-92.5
45.75
45.00
Place Keywords Anoka Sand Plain, Anoka County, Chisago County, Isanti County, Sherburne County, Minnesota
Theme Keywords geoscientificInformation, Geology, Hydrogeology, Surficial Geology, Pollution Sensitivity, Regional Hydrogeologic Assessment
Theme Keyword Thesaurus ISO 19115 Topic Category
Access Constraints None
Use Constraints
Contact Person Information Tim Wahl,
Minnesota Geological Survey
2642 University Avenue
St. Paul, Minnesota 55114
Phone: 612.627.4801
FAX:
E-mail: tewahl@tc.umn.edu
Browse Graphic View a sample of the data.
Browse Graphic File Description .pdf file representing one of the map plates for the RHA
Associated Data Sets Map Series and Report: Regional Hydrogeologic Assessment - Anoka Sand Plain, Report RHA-1, Minnesota Department of Natural Resources/Division of Waters, 1993. Available from the Minnesota Geological Survey's Map Store. (612) 627-4782

Map Plates Include:

Plate 1: Surficial Geology
Plate 2: Water Table Hydrogeology and Water Well Data Base Distribution
Plate 3: Sensitivity of the Water-Table System to Pollution

 
Section 2 Data Quality Information Top of full metadata Top of page
Attribute Accuracy
Logical Consistency
Completeness
Horizontal Positional Accuracy
Lineage Investigations begin with a review of existing information, such as earlier geologic maps, soil maps, and hydrologic reports. Drillers send water well logs to the Minnesota Geological Survey, where they are reviewed, interpreted, and entered into the County Well Index (CWI), an interactive data base of water-well information. Building on the previous data, field studies are conducted to improve the understanding of local geologic and hydrologic conditions.

Data was originally digitized in UTM Coordinates, Zone 15, NAD27, with a y-shift of 4,700,000. In 1999 the data was converted to UTM, Zone 15, NAD83, unshifted.
Source Scale Denominator 200000
 
Section 3 Spatial Data Organization Information Top of full metadata Top of page
Native Data Set Environment Arc/INFO
Geographic Reference for Tabular Data
Spatial Object Type Vector
Vendor Specific Object Types Point, Vector
Tiling Scheme Anoka Sand Plain Study Area; some overlay files are in county tiles.
 
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
UTM Zone Number 15E
 
Section 5 Entity and Attribute Information Top of full metadata Top of page
Entity and Attribute Overview The Anoka Sand Plain Regional Hydrogeologic Assessment consists of 23 separate GIS data layers. Five were created by the Minnesota Geological Survey especially for this assessment; the others are background layers from various sources used as reference and for cartography. Much of the background information is from the Bureau of the Census TIGER Line files.

The geology work was based on creating a map series at 1:200,000. Some of the background layers consist of larger-scale data. (TIGER data is scaled at 1:100,000). An overall scale of 1:200,000 is assigned to the dataset.

The data is accompanied by two text files, describing Pollution Sensitivity and Surficial Geology.
Entity and Attribute Detailed Citation ANOKA SAND PLAIN REGIONAL ASSESSMENT DATA:

Covers created by the Minnesota Geological Survey:

aspmw.e00 Anoka Sand Plain Monitoring Wells
aspps.e00 Anoka Sand Plain Pollution Sensitivity
aspsg.e00 Anoka Sand Plain Surficial Geology
aspwt.e00 Anoka Sand Plain Water Table
aspww.e00 Anoka Sand Plain Water Wells

Covers from other sources representing background cartographic information. (These are largely derived from Census TIGER-Line data):

asphydro.e00 Anoka Sand Plain Area Surface Hydrology
asproads.e00 Anoka Sand Plain Area Roads
c02bord.e00 Anoka County Border
c02quad.e00 Anoka County Quad Borders
c02sec.e00 Anoka County Section Lines
c02tr.e00 Anoka County Township Lines
c13bord.e00 Chisago County Border
c13quad.e00 Chisago CountyQuad Borders
c13sec.e00 Chisago County Section Lines
c13tr.e00 Chisago County Township Lines
c30bord.e00 Isanti County Border
c30quad.e00 Isanti County Quad Borders
c30sec.e00 Isanti County Section Lines
c30tr.e00 Isanti County Township Lines
c71bord.e00 Sherburne County Border
c71quad.e00 Sherburne County Quad Borders
c71sec.e00 Sherburne County Section Lines
c71tr.e00 Sherburne County Township Lines

Text Files:

aspps.txt Text for Pollution Sensitivity Cover
aspsg.txt Text for Surficial Geology Cover


ASPPS.TXT . . CODE FILE FOR ANOKA SAND PLAIN POLLUTION SENSITIVITY COVER (ASPPS)

MGSCODE ** DEFINITION OF CODE ** TRAVEL TIME

(Travel time represents the estimated time of travel for contamination to reach the uppermost aquifer).

421** water
440051** low ** Decades to a century
440052**moderate** Years to a decade
440053** high** Weeks to years
440054** very high** Hours to minutes


ASPSG.TXT . . CODE FILE FOR ANOKA SAND PLAIN SURFICIAL GEOLOGY COVER (ASPSG)

Postglacial Deposits

MGSCODE** DEFINITION

421** water
443001** organic deposits
443002** alluvium
443003** eolian sand
443004** terrace deposits
443005** lake silt and clay

Grantsburg Sublobe Deposits

MGSCODE** DEFINITION

443101** lake sand
443107** lake silt and clay
443102** outwash deposits
443103** ice-contact deposits
443106** till
443104** till - yellow-brown (oxidized)
443105** till of mixed composition

Superior Lobe Deposits

MGSCODE** DEFINITION

443205** lake silt and clay
443202** outwash deposits
443203** ice-contact deposits
443204** till- red brown

Bedrock

MGSCODE** DEFINITION

442001** ordovician, cambrian, or precambrian
 
Section 6 Distribution Information Top of full metadata Top of page
Publisher Minnesota Geological Survey
Publication Date 1993
Contact Person Information Susanne Maeder
GIS Data Coordinator
Land Management Information Center (LMIC)
300 Centennial Building; 658 Cedar Street
St. Paul, Minnesota 55155
Phone: 651.201.2488
FAX: 651.296.3698
E-mail: clearing.house@state.mn.us
Distributor's Data Set Identifier rha-1
Distribution Liability Limitations: Although extensive effort has been made to produce error free and complete data, all geographic information has limitations due to the scale, resolution, date and interpretation of the original source materials. You should consult available data documentation (metadata) for these particular data to determine their limitations and the precision to which they depict distance, direction, location or other geographic characteristics. These data may be subject to periodic change without prior notification.

No Warranty: These data are provided as is, without any warranty whatsoever, including but not limited to any warranty as to their performance, merchantability, or fitness for any particular purpose.

Liability: The entire risk as to the results of the use of these data is assumed by the user. LMIC is not responsible for any interpretation or conclusions based on these data made by those who acquire or use it. LMIC shall not be liable for any direct, indirect, special, incidental, compensatory or consequential damages or third party claims resulting from the use of these data, even if LMIC has been advised of the possibility of such potential loss or damage. In States that do not allow the exclusion or limitation of incidental or consequential damages, you may not use these data.

Redistribution Conditions: In obtaining these data from LMIC, it is understood that you and/or your organization have the right to use them for any internal purpose. If you modify them, you should document those changes in a metadata record that should accompany all redistributed data. If you transmit or provide these data in any form to another user, the data MUST be accompanied by a copy of this disclaimer and all documentation provided with the original data set including the full metadata record.

Data Delivered on Electronic Media: If these data have been requested from LMIC on magnetic media, CD-ROM or any other physical media, LMIC will deliver this product in the computer-readable format agreed upon with the requestor. LMIC will re-issue these data if they are determined unreadable by correctly adjusted computer input devices, or when the medium is delivered in a damaged condition. Requests for re-issue of this digital data product must be made within 30 days of the date shipped from LMIC.
Transfer Format Name Arc Export
Transfer Format Version Number Arc 7.2.1
Transfer Size 5.9 MB in self-extracting zipfile (.exe) format
Ordering Instructions This data set is distributed on the internet by clicking below after Online Linkage. Doing so will tell your browser to start downloading a self-extracting 'ZIP' file which will contain the following:

- Arc Export files (.e00) of coverages and/or INFO export files (.e00)
- Associated data tables or code files (.txt format), where necessary
- Metadata (.htm) file for the dataset
- NOTICE.RTF, an important notice about this data set that can be read by most word processing software, and an ascii text version of the same notice (NOTICE.TXT)

After downloading this self-extracting 'zip' file (which will have an 'exe' extension), simply execute (run) the file. (For example, you can double click it from Windows Explorer or File Manager). Doing this will automatically extract the files described above. You can then delete file types that you do not need, if any.
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 04/06/2007
Contact Person Information Susanne Maeder, GIS Data Coordinator
Minnesota Land Management Information Center (LMIC)
300 Centennial Building; 658 Cedar Street
St. Paul, Minnesota 55155
Phone: 651.201.2488
FAX: 651.296.3698
E-mail: clearing.house@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: 04/06/2007