Metadata for GIS dataset ** WTELLN **, Otter Tail Regional Hydrogeologic Assessment, Part B: Minnesota DNR Waters

WTELLN metadata

Water Table Elevation Contours

Minnesota DNR Waters
County Geologic Atlas and Regional Hydrogeologic Assessment Program

Description of data created for Otter Tail Regional Hydrogeologic Assessment, Part B, RHA-5

Metadata created using Minnesota Geographic Metadata Guidelines version 1.2
Metadata content prepared 2003-09-10

Section 1

Identification Information - - - - - - top

Originator

Minnesota DNR Waters - County Geologic Atlas and Regional Hydrogeologic Assessment Program

Title

WTELLN

System Name

Abstract

Water table elevation contours

Purpose

County Geologic Atlas and Regional Hydrogeologic Assessment Program,
Otter Tail Regional Hydrogeologic Assessment, Part B, RHA-5

Time Period of Content Date

8/21/00

Currentness Reference

Current

Progress

Complete

Maintenance and Update Frequency

None Planned

Spatial Extent of Data

West-central Minnesota, including: all of central and western Otter Tail county, central and southeastern Becker county, western Wadena county, northwestern Todd county, northern Douglas county, northeastern Grant county, and southwestern Hubbard county.

Bounding Coordinates

Place Keywords

Minnesota, Otter Tail

Theme Keywords

Water table, Hydrogeology, Surficial geology, Sand, Gravel

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

None

Section 2

Data Quality Information - - - - - - top

Attribute Accuracy

Logical Consistency

Data are topologically correct using ArcInfo 7.1.1

Completeness

Complete

Horizontal Positional Accuracy

unknown

Vertical Positional Accuracy

not applicable

Lineage

The water table surface is depicted on Plate 3 with contour lines at 50-foot intervals. Delineation of these contour lines relied on several sources of information. In the outwash terrains the following sources were used in order of priority: 1) field measurements of water levels in wells completed in the water table aquifer that were collected during Fall, 1999, and observation well data from this same time period, 2) surface water bodies were assumed to be a surface expression of the water table and their elevations were obtained from U.S. Geological Survey (USGS) 1:24,000-scale topographic maps, 3) average depth to water measurements in outwash were used to subtract 20 feet from a surface contour where ground water data were lacking, 4) water level measurements from the time of drilling were obtained from the County Well Index (CWI) of water table aquifer wells, and 5) a USGS Digital Elevation Model (DEM) was used to verify the reasonableness of the results. In the moraine terrains where no wells are completed in the saturated till below the water table the following information was used, in order of priority: 1) the elevation of the transition from oxidized sediment to reduced sediment shown in a CWI well log as the depth of the first blue or gray unit; the actual elevation of saturated material is believed to be slightly higher, however an adjustment was not made here due to the small scale of the map [1:200,000 with a 50-foot contour interval], 2) seismic refraction that measures differences between unsaturated and saturated sediments resulted in the determination of the water table at 9 sites [too few to give this a higher priority], 3) surface water bodies were assumed to be a surface expression of the water table, 4) the average depth to the first reduced sediment in the moraines was used to subtract 20-30 feet from a surface contour where data were lacking, and 5) a USGS DEM was used to verify the reasonableness of the results. The end result of a 1:200,000 scale map necessitated smoothing of the contour lines, consequently, zooming in to a larger scale on an electronic map may result in erroneous interpretation.

Source Scale Denominator

200,000

Section 3

Spatial Data Organization Information - - - - - - top

Native Data Set Environment

ArcView 3.2

Geographic Reference for Tabular Data

Not Applicable

Spatial Object Type

Vector

Vendor Specific Object Types

Point

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)

Section 6

Distribution Information - - - - - - top

Publisher

Minnesota DNR Waters

Publication Date

2002

Contact Person Information

See Metadata Reference Information section, below

Distributor's Data Set Identifier

WTELLN

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 ARCVIEW shapefiles from:
Otter Tail  Regional Hydrogeologic Assessment, Part B: Metadata for GIS and Digital Data

Online Linkage

Otter TailRegional Hydrogeologic Assessment, Part B: Metadata for GIS and Digital Data

Section 7

Metadata Reference Information - - - - - - top

Metadata Date

9/10/2003

Contact Person Information

GIS Specialist, Ground Water Mapping 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