Metadata: Karst Feature Inventory Points

Karst Feature Inventory Points

This page last updated: 09/07/2016
Metadata created using Minnesota Geographic Metadata Guidelines

Go to Section:
  1. Overview
  2. Data Quality
  3. Data Organization
  4. Coordinate System
  5. Attributes
  6. Distribution - Get Data
  7. Metadata Reference

Section 1: Overview

Originator:University of Minnesota, Department of Geology and Geophysics; Minnesota Department of Natural Resources, Ecological and Water Resources Division

Title: Karst Feature Inventory Points

Abstract: Southeastern Minnesota is part of the Upper Mississippi Valley Karst (Hedges and Alexander, 1985) that includes southwestern Wisconsin and northeastern Iowa. Karst lands in Minnesota are developed in Paleozoic carbonate and sandstone bedrock. A significant sandstone karst has developed in Pine County (Shade and others, 2001). Most surficial karst features such as sinkholes are found only in those areas with less than fifty feet of sedimentary cover over bedrock surface (Gao and others, 2002).

Since the early 1980s, the Minnesota Geological Survey and Department of Geology and Geophysics at the University of Minnesota have been mapping karst features and publishing various versions of their results in the form of 1:100,000 scale County Geologic Atlases. In the mid 1990s, the Minnesota Department of Natural Resources was assigned responsibility for the hydrogeology portions of the County Atlases and is now responsible for the karst mapping. Dalgleish and Alexander (1984), Alexander and Maki (1988), Witthuhn and Alexander (1995), Green and others (1997), Shade and others (2001), and Tipping and others (2001) published sinkhole distribution maps for Winona, Olmsted, Fillmore Counties, Leroy Township, Pine and Wabasha Counties respectively. Published atlases of Washington, Dakota, and the counties of the Twin Cites Metro area contain limited information on sinkhole occurrences.

A karst feature database of Southeastern Minnesota has been developed that allows sinkhole and other karst feature distributions to be displayed and analyzed across existing county boundaries in a GIS environment. The central DBMS is a relational GIS-based system interacting with three modules: spatial operation, spatial analysis, and hydrogeological modules. Data tables are stored in a Microsoft ACCESS 2000 DBMS and linked to corresponding ArcMap shapefiles. The current Karst Feature Database of Southeastern Minnesota was put on a Citrix Window 2000 server accessible to researchers and planners through networked interfaces.

The karst inventory points were point features such as sinkholes, springs, and stream sinks extracted from the karst feature database of Southeastern Minnesota. This research was supported with funding from the Minnesota Department of Health.

Purpose: 1) to look for large-scale patterns in the sinkhole distribution; 2) to conduct statistical tests of hypotheses about the formation of sinkholes; 3) to create web-accessible management tools for land-use managers and planners; and 4) to deliver geomorphic and hydrogeological criteria for making scientifically valid land-use policies and decisions in karst areas of southeastern Minnesota

Time Period of Content Date: 05/14/2020

Currentness Reference: The karst features database is maintained by the N.H. Winchell School of Earth Sciences, University of Minnesota - Twin Cities Campus. It contains information on karst features mapped over the last 25 years with the support of the Legistlative Commission on Minnesota Resources, by the Departmentof Geology and Geophyics, the Minnesota Geological Survey, and the DNR. The database is updated on a regular basis. However, this file is static, containing data obtained on the Time Period of Content date.

Progress: In work

Maintenance and Update Frequency: Irregular

Spatial Extent of Data: Statewide

Bounding Coordinates: -96.0

Place Keywords: Minnesota, southeast Minnesota

Theme Keywords: Karst Feature Database, sinkhole, spring, stream sink, karst, geoscientific information

Theme Keyword Thesaurus:

Access Constraints: None

Use Constraints: None

Contact Person Information: Bob Tipping,
Minnesota Geological Survey, University of Minnesota
2609 Territorial Rd
St. Paul, MN  55114-1057
Phone: 612-626-5437

Browse Graphic: Click to view a data sample.
Karst Feature Inventory Points shown over a shaded relief backdrop.

Associated Data Sets:

Section 2: Data Quality

Attribute Accuracy: Source table LFRM_KARSTPT3.DBF: Statistically valid attribute accuracy information is not available for these data. Attribute accuracy was tested by comparison of the source with hard copy printouts and investigation using interfaces developed in ArcView and Microsoft Access platforms.

Logical Consistency: Data are topologically correct.

Completeness: The karst feature database is still an incomplete database. Only sinkholes, springs, and stream sinks are included in the inventory here because information of other karst features is either not available or not verified. Both inventory points and karst feature database are updated on regular basis. More karst features will be available after the database is significantly updated. Sinkhole data in Fillmore, Goodhue, Mower, Olmsted, Pine, Wabasha, and Winona counties are relatively more complete than the rest of the karst areas in southeastern Minnesota.

Horizontal Positional Accuracy: Source layer karstpt3: Varies depending on the source and method of generating geographic coordinates for the karst features.

Vertical Positional Accuracy: Source layer karstpt3: Varies depending on the source and method of generating elevations for the karst features.

Lineage: Attribute Lineage for source table LFRM_KARSTPT3.DBF: No specific information, see the Cartographic Lineage section for some detail.

Source Scale: Source layer karstpt3: 24000

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

Vertical Datum: not applicable

Vertical Units: Not Applicable

Depth Datum: not applicable

Depth Units: Not Applicable

Section 5: Attributes


Detailed Citation:

Table Detail:
karst_feature_inventory_points - Feature Class Attribute Table
Field NameValid ValuesDefinitionDefinition Source
Relate ID number
Feature label
FEATUREenumeratedFeature type
Bstream sink/sieve
Isurface tile inlet
Ttile drain outlet
GCM_CODEenumeratedGeographic coordinate method code
ADigitized - scale 1:24,000 or larger
ASDigitized from scanned image- scale 1:24,000 or larger
BDigitized - scale 1:100,000 to 1:24,000
CDigitized - scales smaller than 1:100,000
DDigitized - scale not specified/unknown;
GGPS (Global Positioning System / satellite)
HGPS; accuracy < 12 meters (+ 40 feet or worse)
IGPS; accuracy 3 to 12 meters (+ 6 to 40 feet)
JGPS; accuracy 1 to 3 meters (+ 3 to 10 feet)
KGPS; accuracy 1 meter (+ 3 feet or better)
MManual (estimated from map or description)
PVisually digitized at parcel centroid from air
GEOC_SRCenumeratedGeographic coordinate source
MGSMinnesota Geological Survey
MNDNRMinnesota Department of Natural Resources
OCPDOlmsted County Planning Department
UMDGUniversity of Minnesota, Duluth Geology Dept.
UMNGUniversity of Minnesota, TC Geology Dept.
Geographic coordinate date in the format YYYYMMDD
UTM easting coordinate
UTM northing coordinate
UTM zone
Datum of geographic coordinate
Minnesota Geological Survey quadrangle code
UTM_ACCURAenumeratedUTM accuracy

Section 6: Distribution

Publisher: Minnesota Department of Natural Resources (DNR)

Publication Date: 09/07/2016

Contact Person Information: Zeb Thomas, GIS Data Systems Coordinator
Minnesota Department of Natural Resources
500 Lafayette Rd
Saint Paul, MN  55155
Phone: 651-259-5637

Distributor's Data Set Identifier: geos_karst_feature_inventory_pts

Distribution Liability: The Minnesota Department of Natural Resources General Geographic Data License Agreement is online:

Ordering Instructions: Please visit the download page for this dataset on the Minnesota Geospatial Commons website using the web link below (Online Linkage).

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: 09/07/2016

Contact Person Information: Bob Tipping,
Minnesota Geological Survey, University of Minnesota
2609 Territorial Rd
St. Paul, MN  55114-1057
Phone: 612-626-5437

Metadata Standard Name: Minnesota Geographic Metadata Guidelines

Metadata Standard Version: 1.2

This page last updated: 09/07/2016
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