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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 |
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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. |
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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 |
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Source Scale Denominator | 100000 |
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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 |
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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) | NRSFSNPY | | | | Rating
| "nsVH" is very high
"nsH" is high
"nsM" is moderate
"nsL" is low
"nsVL" is very low |
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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 |
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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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