County Geologic Atlas Program


Carlton County Geologic Atlas Part B

NRSFSNPY metadata

Sensitivity to Pollution of the Near Surface Materials


Description of data created for County Geologic Atlas Series C-19

Metadata created using Minnesota Geographic Metadata Guidelines version 1.2
Metadata content prepared 2011-08-18


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 Division of Ecological and Water Resources - County Geologic Atlas and Regional Hydrogeologic Assessment Program

Title

 NRSFSNPY

 

System Name

 

Abstract

Near-surface pollution sensitivity in Carlton County, Minnesota. The sensitivity to pollution assessment of the near-surface materials estimates the time of travel for water to travel from the land surface to a depth of ten feet.

 

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

 

Place Keywords

Minnesota, Carlton County

Theme Keywords

Pollution sensitivity, near surface

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, 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 10.0

Completeness

Complete

Horizontal Positional Accuracy

unknown

Vertical Positional Accuracy

not applicable

Lineage

This file was created by combining the estimated infiltration time for soil units with the estimated infiltration rate for the underlying surficial geology units, the soil's parent material.

The sensitivity to pollution assessment for near-surface materials estimates the time of travel for water to travel from the land surface to a depth of ten feet, and is shown in Figure 11, Plate 10. Soil properties are used to estimate the travel time from land surface to a depth of three feet and surficial geology properties are used to estimate the travel time from a depth of three feet to ten feet. The near-surface materials sensitivity assessment was created by estimating infiltration rates through soils and surficial geology units based on the Natural Resources Conservation Service (NRCS) hydrologic rating for soils and the geologic unit texture of deeper parent materials, from Plate 3, Part A, Surficial Geology. Estimates of infiltration rates are shown in Table 1, Plate 10. The NRCS defines hydrologic groups based on a somewhat complicated system, but it is primarily based on the soil unit's texture and the presence or absence of dense, low permeability layers.

The NRSFSNPY shapefile was created by classifying the hydraulic group rating of the soils polygon file and the textures of the surficial geology polygon file according to minimum transmission rate groups (field 'hydrogroup'), combining the soils and surficial geology shapefiles using union geoprocessing. In the new combined shapefile the two hydrogroup fields were concatenated to create the field 'infiltrate'. Transmission rates according to the different combinations of soils and surficial geologic materials were calculated and recorded in the field 'infil_days'. The polygons were symbolized using the field 'infil_days' according to the sensitivity rating table shown below (days converted into hours).

Hours Travel Time

Sensitivity Rating

0 to 320 hours
320 to 1000 hours
1000 to 1800 hours
1800 to 3200 hours
Greater than 3200 hours

Very High
High
Moderate
Low
Very Low

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

Map color

Sensitivity Rating

Time of travel range

Red
Orange
Yellow
Light Green
Dark Green

Very High
High
Moderate
Low
Very Low

Hours to weeks
Weeks to months
Months
Months
Months to a year

Source Scale Denominator

100000

 

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

 

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)

NRSFSNPY

 

 

 

Rating
 

 

"nsVH" is very high
"nsH" is high
"nsM" is moderate
"nsL" is low
"nsVL" is very low

 

 

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

NRSFSNPY

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

 

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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