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Section 1 | Identification Information - - - - - - top |
Originator | Minnesota DNR Waters - County Geologic Atlas and Regional Hydrogeologic Assessment Program |
Title | POTSFCPY |
System Name | |
Abstract | Modeled potentiometric surface of the buried aquifers in Todd County, Minnesota |
Purpose | County Geologic Atlas and Regional Hydrogeologic Assessment Program,
Todd County Geologic Atlas, Part B, County Geologic Atlas Series C-18 |
Time Period of Content Date | November, 2010 |
Currentness Reference | Publication date |
Progress | Complete |
Maintenance and Update Frequency | None Planned |
Spatial Extent of Data | Todd County, Minnesota |
Bounding Coordinates | East | -94.6 | West | -95.2 | North | 46.4 | South | 45.8 |
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Place Keywords | Minnesota, Todd County |
Theme Keywords | aquifer potentiometric surface, 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 | Todd County Geologic Atlas, Part A, County Geologic Atlas Series C-18, published by the Minnesota Geological Survey, 2007. 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 9.3 |
Completeness | Complete |
Horizontal Positional Accuracy | unknown |
Vertical Positional Accuracy | not applicable |
Lineage | This file represents the potentiometric surface of each buried aquifer in feet above sea level. This file was made with water level information from two general sources : driller?s logs from the County Well Index (CWI) database managed by the Minnesota Department of Health and the Minnesota Geological Survey with verified locations and measurements by DNR staff in conjunction with well sampling for this atlas project. The driller?s log data were obtained from the CWI database and represent a data set that was collected over a period of several decades and spans seasonal and multi-year climatic trends of wet and dry conditions. Where the dataset included both CWI drillers log information and water levels collected by DNR staff, the DNR data were used. The following grid calculations were used. C1 AQUIFER
The potentiometric surface was calculated using static water level data for wells constructed in the C1 aquifer. A gridded interpolation of the well point static water level data was calculated with the Topo to Raster tool. This real number grid was then converted into an integer grid by adding 0.5 and converting the result with the spatial analyst int command. Then the potentiometric surface grid was clipped with the C1 aquifer extent polygon by using that polygon as an analysis mask in spatial analyst. H1 AQUIFER
The potentiometric surface was calculated using static water level data for wells constructed in the H1 aquifer. A gridded interpolation of the well point static water level data was calculated with the Topo to Raster tool. This real number grid was then converted into an integer grid by adding 0.5 and converting the result with the spatial analyst int command. Then the potentiometric surface grid was clipped with the H1 aquifer extent polygon by using that polygon as an analysis mask in spatial analyst. B3 AQUIFER
The potentiometric surface was calculated using static water level data for wells constructed in the B3 aquifer. A gridded interpolation of the well point static water level data was calculated with the Topo to Raster tool. This real number grid was then converted into an integer grid by adding 0.5 and converting the result with the spatial analyst int command. Then the potentiometric surface grid was clipped with the B3 aquifer extent polygon by using that polygon as an analysis mask in spatial analyst. B2 AQUIFER
The potentiometric surface was calculated using static water level data for wells constructed in the B2 aquifer. A gridded interpolation of the well point static water level data was calculated with the Topo to Raster tool. This real number grid was then converted into an integer grid by adding 0.5 and converting the result with the spatial analyst int command. Then the potentiometric surface grid was clipped with the B2 aquifer extent polygon by using that polygon as an analysis mask in spatial analyst. B1 AQUIFER
The potentiometric surface was calculated using static water level data for wells constructed in the B1 aquifer. A gridded interpolation of the well point static water level data was calculated with the Topo to Raster tool. This real number grid was then converted into an integer grid by adding 0.5 and converting the result with the spatial analyst int command. Then the potentiometric surface grid was clipped with the B1 aquifer extent polygon by using that polygon as an analysis mask in spatial analyst. X3 AQUIFER
The potentiometric surface was calculated using static water level data for wells constructed in the X3 aquifer. A gridded interpolation of the well point static water level data was calculated with the Topo to Raster tool. This real number grid was then converted into an integer grid by adding 0.5 and converting the result with the spatial analyst int command. Then the potentiometric surface grid was clipped with the X3 aquifer extent polygon by using that polygon as an analysis mask in spatial analyst. X2 AQUIFER
The potentiometric surface was calculated using static water level data for wells constructed in the X2 aquifer. A gridded interpolation of the well point static water level data was calculated with the Topo to Raster tool. This real number grid was then converted into an integer grid by adding 0.5 and converting the result with the spatial analyst int command. Then the potentiometric surface grid was clipped with the X2 aquifer extent polygon by using that polygon as an analysis mask in spatial analyst. X1 AQUIFER
The potentiometric surface was calculated using static water level data for wells constructed in the X1 aquifer. A gridded interpolation of the well point static water level data was calculated with the Topo to Raster tool. This real number grid was then converted into an integer grid by adding 0.5 and converting the result with the spatial analyst int command. Then the potentiometric surface grid was clipped with the X1 aquifer extent polygon by using that polygon as an analysis mask in spatial analyst. |
Source Scale Denominator | 350000 |
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Section 3 | Spatial Data Organization Information - - - - - - top |
Native Data Set Environment | ArcGIS 9.3 |
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) | POTSFCPY | | | | Aquifer | Buried aquifer code. The aquifers are identified as either "C1", "H1", "B3", "B2", "B1", "X3", "X2", or "X1". | | PotSfcElev
(representing modeled potentiometric surface elevation in feet above sea level) | 1150-1175
1175-1200
1200-1225
1225-1250
1250-1275
1275-1300
1300-1325
1325-1350
1350-1375
1375-1400
1400-1425
1425-1450
1450-1475 |
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Section 6 | Distribution Information - - - - - - top |
Publisher | Minnesota DNR Waters |
Publication Date | 2010 |
Contact Person Information | See Metadata Reference Information section, below |
Distributor's Data Set Identifier | POTSFCPY |
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:
Todd County Geologic Atlas, Part B: Metadata for GIS and Digital Data |
Online Linkage | Todd County Geologic Atlas, Part B: Metadata for GIS and Digital Data |
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Section 7 | Metadata Reference Information - - - - - - top |
Metadata Date | 2010-12-28 |
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 |
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