County Geologic Atlas Program


Todd County Geologic Atlas Part B

POTSFCPY metadata

Modeled Potentiometric Surface of the Buried Aquifers


Minnesota DNR Waters
County Geologic Atlas and Regional Hydrogeologic Assessment Program

Description of data created for Todd County Geologic Atlas, Part B
County Geologic Atlas Series C-18

Metadata created using Minnesota Geographic Metadata Guidelines version 1.2
Metadata content prepared 2010-12-28


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

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

 

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.The preceeding link is to a non-DNR site

 

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

 

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

 

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

 

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

 

 

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

 

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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