| Originator | University of Minnesota, Department of Geology and Geophysics; Minnesota DNR - Division of Waters |
| 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 ArcView shape files. 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. Both inventory points and karst feature database are updated on regular basis. This research was supported with funding from the Minnesota Department of Health. |
| Use Tips | |
| Browse Graphic | View a sample of the data. |
| Time Period of Content Date | Unknown |
| Currentness Reference | The databases used in this research have been built over the past 20+ years with support from The Legislative Commission on Minnesota Resources, Minnesota Department of Natural Resources and several counties. |
| Access Constraints | None |
| Use Constraints | None |
| Distributor Organization | DNR-MIS |
| Ordering Instructions | See Online Linkage or Distribution Contact |
| Online Linkage | http://deli.dnr.state.mn.us/ |
| Section 1 | Identification Information | Top of page | ||
| Originator | University of Minnesota, Department of Geology and Geophysics; Minnesota DNR - Division of Waters | |||
| 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 ArcView shape files. 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. Both inventory points and karst feature database are updated on regular basis. This research was supported with funding from the Minnesota Department of Health. |
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| Use Tips | ||||
| 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 | Unknown | |||
| Currentness Reference | The databases used in this research have been built over the past 20+ years with support from The Legislative Commission on Minnesota Resources, Minnesota Department of Natural Resources and several counties. | |||
| Progress | In Work | |||
| Maintenance and Update Frequency | Weekly | |||
| Spatial Extent of Data | Statewide | |||
| Bounding Coordinates | -97.5 -89 49.5 43 |
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| Place Keywords | Minnesota | |||
| Theme Keywords | Karst Feature Database, Sinkhole, Spring, Stream Sink, geoscientificInformation | |||
| Theme Keyword Thesaurus | None | |||
| Access Constraints | None | |||
| Use Constraints | None | |||
| Contact Person Information | Calvin Alexander,
Morse Alumni Professor University of Minnesota Geology & Geophysics Dept. 310 Pillsbury Dr. SE Minneapolis, MN 55455 Phone: (612) 624-3517 FAX: E-mail: | |||
| Browse Graphic | View a sample of the data. | |||
| Browse Graphic File Description | Karst Feature Inventory Points shown over a shaded relief backdrop. | |||
| Associated Data Sets | |
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| Section 2 | Data Quality Information | Top of full metadata | Top of page | |
| 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 Denominator | Source layer karstpt3: 24000 | |||
| Section 3 | Spatial Data Organization Information | Top of full metadata | Top of page | |
| Native Data Set Environment | MS Access, ESRI Shape | |||
| Geographic Reference for Tabular Data | Karst Feature Point | |||
| Spatial Object Type | point | |||
| Vendor Specific Object Types | point | |||
| Tiling Scheme | state | |||
| Section 4 | Spatial Reference Information | Top of full metadata | Top of page | |
| Horizontal Coordinate Scheme | UTM | |||
| Ellipsoid | GRS1980 | |||
| Horizontal Datum | NAD83 | |||
| Horizontal Units | meters | |||
| Distance Resolution | Source layer karstpt3: Varies depending on the source and method of generating geographic coordinates for the karst features. | |||
| Altitude Datum | Not Applicable | |||
| Altitude Units | Not Applicable | |||
| Depth Datum | Not Applicable | |||
| Depth Units | Not Applicable | |||
| Cell Width | ||||
| Cell Height | ||||
| Latitude Resolution | ||||
| Longitude Resolution | ||||
| UTM Zone Number | 15 | |||
| SPCS Zone Identifier | ||||
| County Coordinate Zone Identifier | ||||
| Coordinate Offsets or Adjustments | Not Applicable | |||
| Map Projection Name | Transverse Mercator | |||
| Map Projection Parameters | Not Applicable | |||
| Other Coordinate System's Definition | Not Applicable | |||
| Section 5 | Entity and Attribute Information | Top of full metadata | Top of page | |
| Entity and Attribute Overview | Data Elements for Attribute Table LFRM_KARSTPT3.DBF: RELATEID: Relate ID number FEAT_LABEL: Feature?s label FEATURE: Feature type GCM_CODE: Geographic coordinate method code GEOC_SRC: Geographic coordinate source GEOC_DATE: Geographic coordinate date in the format YYYYMMDD UTME: UTM easting coordinate UTMN: UTM northing coordinate UTM_ZONE: UTM zone DATUM: Datum of geographic coordinate MGSQUAD_C: Minnesota Geological Survey quadrangle code |
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| Entity and Attribute Detailed Citation | Value Domain for Data Element FEATURE: A = spring B = stream sink/sieve D = sinkhole E = mine F = quarry I = surface tile inlet O = outcrop T = tile drain outlet X = miscellaneous Value Domain for Data Element GCM_CODE: A = Digitized - scale 1:24,000 or larger AS = Digitized from scanned image- scale 1:24,000 or larger B = Digitized - scale 1:100,000 to 1:24,000 C = Digitized - scales smaller than 1:100,000 D = Digitized - scale not specified/unknown; E = Digitized - MGS Cuyuna proj. (1:200 to 1:600) G = GPS (Global Positioning System / satellite) H = GPS; accuracy < 12 meters (+ 40 feet or worse) I = GPS; accuracy 3 to 12 meters (+ 6 to 40 feet) J = GPS; accuracy 1 to 3 meters (+ 3 to 10 feet) K = GPS; accuracy 1 meter (+ 3 feet or better) M = Manual (estimated from map or description) P = Visually digitized at parcel centroid from air Q = Digitized - MGS compiled gravity station locations S = Surveyed T = Calculated from township-range-section T* = Calculated from township-range-section, irregular section condition U = Calculated from township-range-section-Q U* = Calculated from township-range-section-Q, irregular section condition V = Calculated from township-range-section-QQ V* = Calculated from township-range-section-QQ, irregular section condition W = Calculated from township-range-section-QQQ W* = Calculated from township-range-section-QQQ, irregular section condition X = Calculated from township-range-section-QQQQ X* = Calculated from township-range-section-QQQQ, irregular section Y = Calculated from township-range-section-QQQQQ Y* = Calculated from township-range-section-QQQQQ, irregular section Z = Calculated from township-range-section-QQQQQQ Z* = Calculated from township-range-section-QQQQQQ, irregular section Value Domain for Data Element GEOC_SRC: BSU = Bemidji State University MDH = Minnesota Department of Health MGS = Minnesota Geological Survey MNDNR = Minnesota Department of Natural Resources MSU = Mankato State University OCPD = Olmsted County Planning Department UMDG = University of Minnesota, Duluth Geology Dept. UMNG = University of Minnesota, TC Geology Dept. WSU = Winona State University Value Domain for Data Element UTM_ZONE: |
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| Section 6 | Distribution Information | Top of full metadata | Top of page | |
| Publisher | Minnesota DNR - MIS Bureau | |||
| Publication Date | 2003-01-08 00:00:00.0 | |||
| Contact Person Information | Hal Watson GIS Database Coordinator DNR-MIS 500 Lafayette Road, Box 11 St. Paul, MN 55155-4011 Phone: (651) 259-5508 FAX: (651) 297-4946 E-mail: |
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| Distributor's Data Set Identifier | lfrm_karstpt3 | |||
| Distribution Liability | The Minnesota Department of Natural Resources makes no representation or warranties, express or implied, with respect to the reuse of data provided herewith, regardless of its format or the means of its transmission. There is no guarantee or representation to the user as to the accuracy, currency, suitability, or reliability of this data for any purpose. The user accepts the data 'as is', and assumes all risks associated with its use. By accepting this data, the user agrees not to transmit this data or provide access to it or any part of it to another party unless the user shall include with the data a copy of this disclaimer. The Minnesota Department of Natural Resources assumes no responsibility for actual or consequential damage incurred as a result of any user's reliance on this data. | |||
| Transfer Format Name | Shapefile | |||
| Transfer Format Version Number | Not Applicable | |||
| Transfer Size | 1.6 | |||
| Ordering Instructions | See Online Linkage or Distribution Contact | |||
| Online Linkage | http://deli.dnr.state.mn.us/ | |||
| Section 7 | Metadata Reference Information | Top of full metadata | Top of page | |
| Metadata Date | 2006-08-09 09:15:21.0 | |||
| Contact Person Information | Calvin Alexander,
Morse Alumni Professor University of Minnesota Geology & Geophysics Dept. 310 Pillsbury Dr. SE Minneapolis, MN 55455 Phone: (612) 624-3517 FAX: E-mail: |
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| Metadata Standard Name | Minnesota Geographic Metadata Guidelines | |||
| Metadata Standard Version | 1.2 | |||
| Metadata Standard Online Linkage | http://www.gis.state.mn.us/stds/metadata.htm | |||