| Originator | Washington County |
| Abstract | As one of seven coverages for the Washington County Digital Geological Atlas, this dataset represents a Bedrock Topography polygon and line coverage in an ArcView shapefile format. The Minnesota Geological Society produced the Washington County Geological Atlas in 1990, and subsequently extracted the information from these maps in 1995 to produce the digital version that this one of seven datasets represents. |
| Browse Graphic | none available |
| Time Period of Content Date | 1990 |
| Currentness Reference | Data for the Geological Atlas' Bedrock Topography dataset were captured during field surveys in 1990. Subsequently, this information was extracted to produce to a digital version of the Atlas in 1995. |
| Access Constraints | The data set is available to anyone. Fees are charged according to Washington County pricing policy. Free download from MetroGIS, or $30 for a CD from Washington County. |
| Use Constraints | All users of the digital parcel data are licensees. Licensees agree to certain terms which define limitations on the use and handling of the digital parcel data. See license agreement for complete information. THE DIGITIAL MAP IS FURNISHED ON AN AS IS BASIS, WITHOUT ANY SUPPORT WHATSOEVER, AND WITHOUT REPRESENTATION OR WARRANTY, INCLUDING BUT NOT IN ANY MANNER LIMITED TO FITNESS, MERCHANTABILITY AND COMPLETENESS. The information is neither a legally recorded map or a survey and is not intended to be used as one. The information is a compilation of records, information and data from various city, county and state offices and other sources and should be used for reference only. No representation is made that the features presented accurately reflect true locations. Washington County or any other entity from which data was obtained assumes no liability for any errors or omissions herein. If discrepancies are found, contact the Washington County Information Technology Office. |
| Distributor Organization | Washington County, Information Services |
| Ordering Instructions | Send a written request to the distributor identifying the desired medium type and file format. Once a license agreement has been signed and returned (original form required), the data will be shipped within 7 to 10 days. |
| Online Linkage | Click here to download data. (See Ordering Instructions above for details.) By clicking here, you agree to the notice in "Distribution Liability" in Section 6 of this metadata. |
| Section 1 | Identification Information | Top of page | ||
| Originator | Washington County | |||
| Title | Bedrock Topography Dataset for the Washington County Digital Geological Atlas | |||
| Abstract | As one of seven coverages for the Washington County Digital Geological Atlas, this dataset represents a Bedrock Topography polygon and line coverage in an ArcView shapefile format. The Minnesota Geological Society produced the Washington County Geological Atlas in 1990, and subsequently extracted the information from these maps in 1995 to produce the digital version that this one of seven datasets represents. |
|||
| Purpose | One of seven coverages for the Washington County Digital Geological Atlas this dataset provides a Washington County Digital Bedrock Topography Map. | |||
| Time Period of Content Date | 1990 | |||
| Currentness Reference | Data for the Geological Atlas' Bedrock Topography dataset were captured during field surveys in 1990. Subsequently, this information was extracted to produce to a digital version of the Atlas in 1995. | |||
| Progress | Complete | |||
| Maintenance and Update Frequency | None planned | |||
| Spatial Extent of Data | Washington County, Minnesota | |||
| Bounding Coordinates | -93.02207 -92.74524 45.29704 44.74575 |
|||
| Place Keywords | Washington County, Minnesota | |||
| Theme Keywords | Bedrock topography | |||
| Theme Keyword Thesaurus | ||||
| Access Constraints | The data set is available to anyone. Fees are charged according to Washington County pricing policy. Free download from MetroGIS, or $30 for a CD from Washington County. | |||
| Use Constraints | All users of the digital parcel data are licensees. Licensees agree to certain terms which define limitations on the use and handling of the digital parcel data. See license agreement for complete information. THE DIGITIAL MAP IS FURNISHED ON AN AS IS BASIS, WITHOUT ANY SUPPORT WHATSOEVER, AND WITHOUT REPRESENTATION OR WARRANTY, INCLUDING BUT NOT IN ANY MANNER LIMITED TO FITNESS, MERCHANTABILITY AND COMPLETENESS. The information is neither a legally recorded map or a survey and is not intended to be used as one. The information is a compilation of records, information and data from various city, county and state offices and other sources and should be used for reference only. No representation is made that the features presented accurately reflect true locations. Washington County or any other entity from which data was obtained assumes no liability for any errors or omissions herein. If discrepancies are found, contact the Washington County Information Technology Office. |
|||
| Contact Person Information | David Brandt,
GIS Analyst Washington County, Information Services 14900 61st Street North, PO Box 6 Stillwater, Minnesota 55082-0006 Phone: 651.430.6894 FAX: 651.430.6410 E-mail: brandt@co.washington.mn.us | |||
| Browse Graphic | none available | |||
| Browse Graphic File Description | ||||
| Associated Data Sets | Other datasets associated with the Washington County Digital Geological Atlas, including the following: -Prairie du Chien-Jordan Pollution Sensitivity Map Symbols -Bedrock Geology for the Afton-Lakeland Area -Bedrock Geology -Bedrock Geology Map Symbols -Sensitivity of water table system to pollution -Sensitivity of Prairie du Chien Aquifer to pollution |
|||
| Section 2 | Data Quality Information | Top of full metadata | Top of page | |
| Attribute Accuracy | ||||
| Logical Consistency | This dataset is topologically clean | |||
| Completeness | ||||
| Horizontal Positional Accuracy | ||||
| Vertical Positional Accuracy | ||||
| Lineage | SOURCE: 1990 Washington County Geological Atlas. PROCESSING STEPS: -Data for the Atlas were collected during 1990 field surveys in Washington County. The Atlas maps were first produced on a paper medium. -The bedrock topography information/linework was extracted from a mylar sheet using a scanner; -Next, label points were added to the polygon coverage, and polygon and line coverage were created. Notes: The Minnesota Geological Society used PC ARC/INFO for digitizing and building the coverage. Washington County has since converted the coverage to an ArcView shapefile, and; converted the Bedrock Topography coverage coordinates from UTM, GRS80, Zone 15, with a y-shift equal to 4700000 to the Washington County coordinate system The county has also retained a copy of the dataset in its original UTM coordinates. |
|||
| Source Scale Denominator | 100000 | |||
| Section 3 | Spatial Data Organization Information | Top of full metadata | Top of page | |
| Native Data Set Environment | ArcView 3.1, Windows NT 4.0 workstation | |||
| Geographic Reference for Tabular Data | ||||
| Spatial Object Type | Vector | |||
| Vendor Specific Object Types | nodes, arcs, label points, polygons, lines | |||
| Tiling Scheme | ||||
| Section 4 | Spatial Reference Information | Top of full metadata | Top of page | |
| Horizontal Coordinate Scheme | County Coordinates | |||
| Ellipsoid | GRS80 | |||
| Horizontal Datum | NAD83 | |||
| Horizontal Units | Feet | |||
| Distance Resolution | ||||
| Altitude Datum | ||||
| Altitude Units | ||||
| Depth Datum | ||||
| Depth Units | ||||
| Cell Width | ||||
| Cell Height | ||||
| Latitude Resolution | ||||
| Longitude Resolution | ||||
| UTM Zone Number | ||||
| SPCS Zone Identifier | ||||
| County Coordinate Zone Identifier | 44 | |||
| Coordinate Offsets or Adjustments | ||||
| Map Projection Name | ||||
| Map Projection Parameters | ||||
| Other Coordinate System's Definition | ||||
| Section 5 | Entity and Attribute Information | Top of full metadata | Top of page | |
| Entity and Attribute Overview | Coverage and Attribute Information for the Bedrock Topography Dataset: COVER NAME DESCRIPTION (COVERAGE TYPE) BTPG....................Bedrock Topography (polygon/line) Field Definitions and Attribute Codes for polygon cover BTPG. ITEM NAME TYPE WIDTH DECIMAL type c 2 gcm_code c 3 geoc_src c 5 geoc_date n 8 utme_lab n 6 utmn_lab n 7 utm_zone n 2 (cint c 10 replaces unit_code on BTPG only description c 30 mgscode n 6 type: polygon type code. Codes used in covers are as follows: CODE Description BT.....................Bedrock Topography gcm_code: geographic coordinate method code. Geographic coordinates for the point were determined, hence implies the accuracy of the lines. Note that the accuracy of coordinates determined by measuring the location of lines drawn on a map (either by digitizing or manual methids) area affected mainly by the skill of the person drawing the line on the map rather than the limitations of the map itself or the digitizing equipment and process. Since it is difficult to assign an error to that part of the coordinate determination process, the accuracy estimates indicated below for digitizing reflect the combined error of the map (assuming National Map Accuracy Standards) and a digitizing table with a + 0.005 inch accuracy rating. The geographic method codes used in covers are: TYPE DESCRIPTION B.............digitized- scale 1:100000 to 1:24000- accuracy 25 to 90 meters (+/- 83 to 296 feet) D.............digitized- scale unknown (refers to US Census Tiger File county borders) geog_src: Geographic coordinate source code. Indicates who (which organization or project) determined the geographic coordinates. geoc_date: the date the coordinates for the lines were determined. Format yyyymmdd. utme_lab: the UTM easting coordinate of the polygon label point. utmn_lab: the UTM northing coordinate of the polygon label point (value shifted -4700000. utm_zone: the UTM zone for which the coordinates of the lines are calculated. All Minnesota points by convention should be Zone 15 (zone 15 is extended to cover the entire state to simplify plotting and maintenance). cint (BTPG only): elevation interval of bedrock surface in feet above sea level. Shows the range of values between contour lines. description: Description of polygon as listed in field unit_code. Please refer to the Washington County Atlas, Plate 6 for a complete description of how the pollution sensitivity units were determined and guides to their use. Polygon coverage, BTPG, was also built as a line cover, and containes the following additional item in BTPG.AAT: ITEM NAME TYPE WIDTH DECIMAL clev n 6 clev: Value of contour line- bedrock elevation in feet above mean sea level. CODE DESCRIPTION MGS.............Minnesota Geological Survey TIGER..........US Census Tiger Files mgscode: internal code used at Minnesota Geological Survey. |
|||
| Entity and Attribute Detailed Citation | ||||
| Section 6 | Distribution Information | Top of full metadata | Top of page | |
| Publisher | Washington County | |||
| Publication Date | 1996 | |||
| Contact Person Information | David Brandt GIS Analyst Washington County, Information Services 14900 61st Street North, PO Box 6 Stillwater, Minnesota 55082-0006 Phone: 651.430.6894 FAX: 651.430.6410 E-mail: brandt@co.washington.mn.us |
|||
| Distributor's Data Set Identifier | Bedrock Topography Dataset for the Washington County Digital Geological Atlas | |||
| Distribution Liability | THE DIGITAL MAP AND ANY ASSOCIATED REFERENCE MATERIALS ARE PROVIDED ON AN AS IS BASIS, WITHOUT ANY SUPPORT WHATSOEVER, AND WITHOUT REPRESENTATION OR WARRANTY, INCLUDING BUT NOT IN ANY MANNER LIMITED TO FITNESS, MERCHANTABILITY AND COMPLETENESS. SEE LICENSE AGREEMENT FOR COMPLETE LIABILITY INFORMATION. | |||
| Transfer Format Name | ArcView shapefile note: available in county or utm coordinates | |||
| Transfer Format Version Number | 3.1 | |||
| Transfer Size | ||||
| Ordering Instructions | Send a written request to the distributor identifying the desired medium type and file format. Once a license agreement has been signed and returned (original form required), the data will be shipped within 7 to 10 days. | |||
| Online Linkage | Click here to download data. (See Ordering Instructions above for details.) By clicking here, you agree to the notice in "Distribution Liability" above. | |||
| Section 7 | Metadata Reference Information | Top of full metadata | Top of page | |
| Metadata Date | 02/02/1999 | |||
| Contact Person Information | David Brandt,
GIS Analyst Washington County, Information Services 14900 61st Street North, PO Box 6 Stillwater, Minnesota 55082-0006 Phone: 651.430.6894 FAX: 651.430.6410 E-mail: brandt@co.washington.mn.us |
|||
| Metadata Standard Name | Minnesota Geographic Metadata Guidelines | |||
| Metadata Standard Version | 1.1 | |||
| Metadata Standard Online Linkage | http://www.lmic.state.mn.us/gc/stds/metadata.htm | |||