Section 1 | Overview | |||
Originator | Minnesota Department of Natural Resources | |||
Title | NRSFSNPY | |||
Abstract | Near-surface pollution sensitivity in Chisago 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 | Chisago County Geologic Atlas, Part B, County Geologic Atlas Series C-22 | |||
Time Period of Content Date | ||||
Currentness Reference | data was acquired or accessed between 2010 and 2012 | |||
Progress | Complete | |||
Maintenance and Update Frequency | None Planned | |||
Spatial Extent of Data | Chisago County, Minnesota | |||
Bounding Coordinates | -97.27 -89.4 49.4 43.4 | |||
Place Keywords | Chisago County, Minnesota | |||
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 Minnesota 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 | Holly Johnson,
GIS Specialist Minnesota Department of Natural Resources 500 Lafayette Rd St. Paul, MN 55155-4025 Phone: 651-259-5693 Email: holly.je.johnson@state.mn.us | |||
Browse Graphic | None available | |||
Associated Data Sets | Chisago County Geologic Atlas, Part A, County Geologic Atlas Series C-22, published by the Minnesota Geological Survey, 2010. More information and downloadable data for Part A is available on the MGS data site: http://www.mngs.umn.edu/county_atlas/countyatlas.htm | |||
Section 2 | Data Quality | |||
Attribute Accuracy | ||||
Logical Consistency | Data are topologically correct using ArcGIS 10.2 | |||
Completeness | Complete | |||
Horizontal Positional Accuracy | NA | |||
Vertical Positional Accuracy | NA | |||
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 3, 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, combining the soils and surficial geology shapefiles using union geoprocessing. Transmission rates according to different combinations of soils and surficial geologic materials were calculated. The developed polygons were symbolized according to the sensitivity rating table shown in Figure 1, Plate 10. | |||
Section 3 | Spatial Data Organization (not used in this metadata) | |||
Section 4 | Coordinate System | |||
Horizontal Coordinate Scheme | Universal Transverse Mercator | |||
UTM Zone Number | 15 | |||
Horizontal Datum | NAD83 | |||
Horizontal Units | meters | |||
Section 5 | Attributes | |||
Overview | ||||
Detailed Citation | ||||
Table Detail: |
NRSFSNPY | |||
Field Name | Valid Values | Definition | Definition Source |
---|---|---|---|
RATING | "nsH" is high, "nsM" is moderate, "nsL" is low, "nsVL" is very low |
Section 6 | Distribution | |||
Publisher | Minnesota Department of Natural Resources, Ecological and Water Resources Division | |||
Publication Date | 2014 | |||
Contact Person Information | Holly Johnson,
GIS Specialist Minnesota Department of Natural Resources 500 Lafayette Rd St. Paul, MN 55155-4025 Phone: 651-259-5693 Email: holly.je.johnson@state.mn.us | |||
Distributor's Data Set Identifier | NRSFSNPY | |||
Distribution Liability | These data were prepared from publicly available information only. Every reasonable effort has been made to ensure the accuracy of the factual data on which these files are 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. | |||
Ordering Instructions | Download zip file of metadata, shapefiles, and feature classes by clicking "I AGREE" below.
The geodatabase (Chisago_c22.gdb) is the preferred format. Shapefiles are also included (Chisago_c22_shape) for those who require that data format. The shapefiles were converted from feature classes in a file geodatabase. Because some of the data contain null values, which are not supported by shapefiles, we suggest using the shapefiles with caution. The conversion to shapefiles changes null values to zeros or blanks and makes querying the data more difficult. PDFs of the Chisago County Geologic Atlas plates can be downloaded at: http://www.dnr.state.mn.us/waters/programs/gw_section/mapping/platesum/chiscga.html | |||
Online Linkage | I AGREE to the notice in "Distribution Liability" above. Clicking to agree will either begin the download process, link to a service, or provide more instructions. See "Ordering Instructions" above for details. | |||
Section 7 | Metadata Reference | |||
Metadata Date | 07/24/2015 | |||
Contact Person Information | Holly Johnson,
GIS Specialist Minnesota Department of Natural Resources 500 Lafayette Rd St. Paul, MN 55155-4025 Phone: 651-259-5693 Email: holly.je.johnson@state.mn.us | |||
Metadata Standard Name | Minnesota Geographic Metadata Guidelines | |||
Metadata Standard Version | 1.2 | |||
Metadata Standard Online Linkage | http://www.mngeo.state.mn.us/committee/standards/mgmg/metadata.htm |