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Section 1 | Identification Information - - - - - - top |
Originator | Minnesota DNR Division of Ecological and Water Resources - County Geologic Atlas and Regional Hydrogeologic Assessment Program |
Title | AQBDELPY |
System Name | |
Abstract | Modeled elevation of the top of the buried aquifers |
Purpose | County Geologic Atlas and Regional Hydrogeologic Assessment Program,
Carlton County Geologic Atlas, Part B, County Geologic Atlas Series C-19 |
Time Period of Content Date | August, 2011 |
Currentness Reference | Publication date |
Progress | Complete |
Maintenance and Update Frequency | None Planned |
Spatial Extent of Data | Carlton County, Minnesota |
Bounding Coordinates | East | -92.3 | West | -93.1 | North | 46.9 | South | 46.4 |
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Place Keywords | Minnesota, Carlton County |
Theme Keywords | aquifer elevation, top of aquifer, 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 | Carlton County Geologic Atlas, Part A, County Geologic Atlas Series C-19, published by the Minnesota Geological Survey, 2009. More information and downloadable data for Part A available on the MGS ftp site. |
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Section 2 | Data Quality Information - - - - - - top |
Attribute Accuracy | |
Logical Consistency | Data are topologically correct using ArcGIS 10.0 |
Completeness | Complete |
Horizontal Positional Accuracy | unknown |
Vertical Positional Accuracy | not applicable |
Lineage | The grid shapefiles for the tops of the buried aquifers were derived from the MGS grid files. Three of the files representing the tops of the sm, sl, and sc sand units were modified to represent only the buried portions of these units. The remaining units (si, sts, stw, and su) required no modification.
The modifications to sand units sm, sl, and sc, were made with the following steps. First the surficial portions of the units were removed by finding which portions of the top grid files were below the base of the surface sand (GRID A). Another calculation was made to determine which portions of the base files were below the base of the surficial sand (GRID B). A third calculation was made to determine the extent of the cut-in portions (buried sand that was actually surficial sand, GRID C). The newly calculated cut-in grids were converted to polygon files to be used as masks. The cut-in grid mask was used to extract values from the base of the surficial sand grid to be used as modified top values for the cut-in portions of the sand units. Grids A and C were combined with conditional statements in spatial analyst to produce the final grids. |
Source Scale Denominator | 300000 |
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Section 3 | Spatial Data Organization Information - - - - - - top |
Native Data Set Environment | ArcGIS 10.0 |
Geographic Reference for Tabular Data | Not Applicable |
Spatial Object Type | Vector |
Vendor Specific Object Types | polygon |
Tiling Scheme | state |
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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 |
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Section 5 | Entity and Attribute Information - - - - - - top |
Entity and Attribute Overview | |
Entity and Attribute Detailed Citation HTML Table (Not Available) | AQBDELPY | | | | Aquifer_Q | Buried aquifer code. The aquifers are identified as either "sc", "sc1", "sic", "sl", "sm", "sts", "stw", or "su". | | Elevation
(representing modeled elevations of the top of the buried aquifers in feet above sea level) | 649-700
>700-750
>750-800
>800-850
>850-900
>900-950
>950-1000
>1000-1050
>1050-1100
>1100-1150
>1150-1200
>1200-1250
>1250-1300
>1300-1350
>1350-1400
>1400-1450
>1450-1500 |
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Section 6 | Distribution Information - - - - - - top |
Publisher | Minnesota DNR Division of Ecological and Water Resources |
Publication Date | 2011 |
Contact Person Information | See Metadata Reference Information section, below |
Distributor's Data Set Identifier | AQBDELPY |
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 ArcGIS shapefiles from:
Carlton County Geologic Atlas, Part B: Metadata for GIS and Digital Data |
Online Linkage | Carlton County Geologic Atlas, Part B: Metadata for GIS and Digital Data |
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Section 7 | Metadata Reference Information - - - - - - top |
Metadata Date | 2011-08-18 |
Contact Person Information | GIS Specialist, Atlas/Assessment Program
Minnesota DNR - Division of Division of Ecological and Water Resources
500 Lafayette Road
Saint Paul, MN 55155
Phone: (651) 259-5693 or (651) 259-5700
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 |
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