Traverse-Grant Regional Hydrogeological Assessment, Part B

Minnesota DNR Waters
County Geologic Atlas and Regional Hydrogeologic Assessment Program

Description of data created for
Traverse-Grant Regional Hydrogeological Assessment, Part B
Regional Hydrogeological Assessment Series RHA-6

AQBDSNPY - Sensitivity to Pollution of the Buried Aquifers

Metadata created using Minnesota Geographic Metadata Guidelines version 1.2
Metadata content prepared 2009-03-16


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

AQBDSNPY

 

System Name

 

Abstract

Buried aquifer pollution sensitivity in the Traverse-Grant, Minnesota RHA study area

 

Purpose

County Geologic Atlas and Regional Hydrogeologic Assessment Program,
Traverse-Grant Regional Hydrogeological Assessment, Part B, Regional Hydrogeological Assessment Series RHA-6

Time Period of Content Date

November, 2008

Currentness Reference

Publication date

Progress

Complete

Maintenance and Update Frequency

None Planned

Spatial Extent of Data

West-central Minnesota, including: all of Pope County, all of Stevens County, northern Big Stone County, southern Douglas County, southern Grant County, and most of Traverse County.

Bounding Coordinates

East

-95.1

West

-96.8

North

46.0

South

45.4

 

Place Keywords

Pope, Stevens, Big Stone, Douglas, Grant, and Traverse counties; Minnesota.

Theme Keywords

Pollution sensitivity, 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

Traverse-Grant Regional Hydrogeologic Assessment, Part A, Regional Hydrogeologic Assessment Series RHA-6 published by the Minnesota Geological Survey, 2006. More information and downloadable data for Part A is available on the MGS ftp siteThe preceeding link is to a non-DNR site

 

Section 2

Data Quality Information - - - - - - top

Attribute Accuracy

 

Logical Consistency

Data are topologically correct using ArcGIS 9.2

Completeness

Complete

Horizontal Positional Accuracy

unknown

Vertical Positional Accuracy

not applicable

Lineage

This file represents the thickness between the top of each aquifer and the base of the nearest overlying recharge surface. A description of recharge surfaces is found in Figure 2, Plate 6.

Sensitivity estimates were created by calculating the vertical distance between the nearest overlying recharge surface and the top of the aquifer. The following grid calculations were used.

Sensitivity calculations using recharge surfaces immediately above aquifers:

LG aquifer
TRGrechsurf1 - UGbot

OT aquifer
TRGrechsurf2 - LGbot

CW aquifer
TRGrechsurf3 - OTbot

Aquifer 1
TRGrechsurf4 - CWbot

Western aquifer
TRGrechsurf3 - OTbot

The sensitivity rating model, based on the thickness of the protective layer between the aquifer and the nearest overlying recharge surface, is described in Figure 2 of Plate 6. Sensitivity ratings are applied as follows:
Protective layer thickness - - Sensitivity Rating
0 to 10 feet - - High or Very High
10 to 20 feet - - Moderate or High
20 to 30 feet - - Moderate
30 to 40 feet - - Low
Greater than 40 feet - - Very Low

The final raster was converted to a polygon shapefile.

Sensitivity interpretation was based on overlapping estimated time of travel ranges as follows:

Red - - Very High - - Hours to months
Orange - - High - - Weeks to years
Yellow - - Moderate - - Years to decades
Light green - - Low - - Decades to a century
Dark green - - Very Low - - A century or more

Source Scale Denominator

100000

 

Section 3

Spatial Data Organization Information - - - - - - top

Native Data Set Environment

ArcGIS 9.2

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)

aqbdsnpy

 

 

 

AQUIFER_Q

Buried aquifer code. The aquifers are identified as either "LG", "OT", "CW", "aquifer 1", or "western aquifer".

 

RATING

 

"VH" is very high
"H" is high
"M" is moderate
"L" is low
"VL" is very low

 

 

Section 6

Distribution Information - - - - - - top

Publisher

Minnesota DNR Waters

Publication Date

2008

Contact Person Information

See Metadata Reference Information section, below

Distributor's Data Set Identifier

aqbdsnpy

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:
Traverse-Grant Regional Hydrogeological Assessment, Part B: Metadata for GIS and Digital Data

Online Linkage

Traverse-Grant Regional Hydrogeological Assessment, Part B: Metadata for GIS and Digital Data

 

Section 7

Metadata Reference Information - - - - - - top

Metadata Date

2009-03-16

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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