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This page last updated: 08/05/2011
Metadata created using Minnesota Geographic Metadata Guidelines
| Originator | Minnesota Department of Natural Resources, Surdex Corporation |
| Abstract | This dataset contains leaf-off 4 Band (RGBI) digital orthophoto imagery of Chisago, Isanti, Sherburne and Wright counties in east-central Minnesota. It was produced at half-meter (50 cm) resolution from new aerial photography captured in Spring 2010. Funding for this data was provided by the Minnesota Natural Heritage Fund, the Minnesota Clean Water Legacy Act, and The Environmental and Natural Resources Trust Fund. This metadata record was created by MnGeo using information supplied by Surdex Corporation. |
| Browse Graphic | none available |
| Time Period of Content Date | |
| Currentness Reference | Ground condition. Flown mid-April, 2010 |
| Access Constraints | Unrestricted. |
| Use Constraints | Imagery is the property of the State of Minnesota. Redistribution conditions: In obtaining this data from MnGeo, it is understood that you and/or your organization have the right to use it for any purpose. If you modify it, you are encouraged to apply responsible best practices by documenting those changes in a metadata record. If you transmit or provide the data to another user, it is your responsibility to provide appropriate content, limitation, warranty and liability information as you see fit. |
| Distributor Organization | Minnesota Geospatial Information Office |
| Ordering Instructions | These air photos are available via MnGeo's WMS service. Click on the link below for more information about WMS services and how to use them. |
| 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. |
Go to Section:
1. Identification Information
2. Data Quality Information
3. Spatial Data Organization Information
4. Spatial Reference Information
5. Entity and Attribute Information
6. Distribution Information
7. Metadata Reference Information
| Section 1 | Identification Information | Top of page | ||
| Originator | Minnesota Department of Natural Resources, Surdex Corporation | |||
| Title | Digital Orthorectified Images, East-Central Minnesota, Half-Meter Resolution, 2010 | |||
| Abstract | This dataset contains leaf-off 4 Band (RGBI) digital orthophoto imagery of Chisago, Isanti, Sherburne and Wright counties in east-central Minnesota. It was produced at half-meter (50 cm) resolution from new aerial photography captured in Spring 2010. Funding for this data was provided by the Minnesota Natural Heritage Fund, the Minnesota Clean Water Legacy Act, and The Environmental and Natural Resources Trust Fund. This metadata record was created by MnGeo using information supplied by Surdex Corporation. |
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| Purpose | The orthophotos will be used by the Minnesota DNR to update the National Wetland Inventory maps and as a base layer for mapping wetlands and other business needs. This type of leaf-off photography is a critical component for a variety of land management applications including transportation planning, wetland mapping, urban planning, forest management, soil mapping, and utility siting. | |||
| Time Period of Content Date | ||||
| Currentness Reference | Ground condition. Flown mid-April, 2010 | |||
| Progress | Complete | |||
| Maintenance and Update Frequency | Irregular | |||
| Spatial Extent of Data | Chisago, Isanti, Sherburne and Wright counties, Minnesota | |||
| Bounding Coordinates | -94.34 -92.62 45.75 44.43 |
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| Place Keywords | Chisago, Isanti, Sherburne, Wright, Minnesota | |||
| Theme Keywords | imageryBaseMapsEarthCover, Orthophotography, Digital Orthophotography, Ortho, Orthophotos, Digital Orthorectified Images, Digital Orthophotos, DOQ, DOQQ, Imagery, Images, Aerial Photography, Aerial Photos, Digital Aerial Photography, Air Photo, Color Infrared, Four Band Imagery | |||
| Theme Keyword Thesaurus | ISO 19115 Topic Category | |||
| Access Constraints | Unrestricted. | |||
| Use Constraints | Imagery is the property of the State of Minnesota. Redistribution conditions: In obtaining this data from MnGeo, it is understood that you and/or your organization have the right to use it for any purpose. If you modify it, you are encouraged to apply responsible best practices by documenting those changes in a metadata record. If you transmit or provide the data to another user, it is your responsibility to provide appropriate content, limitation, warranty and liability information as you see fit. |
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| Contact Person Information | Steve Kloiber,
Wetland Monitoring Coordinator Minnesota Department of Natural Resources 500 Lafayette Road St. Paul, MN 55155 Phone: 651-259-5164 FAX: E-mail: steve.kloiber@state.mn.us | |||
| Browse Graphic | none available | |||
| Browse Graphic File Description | ||||
| Associated Data Sets | Some areas of this project were flown at one-foot resolution; see: http://www.mngeo.state.mn.us/chouse/metadata/ecmn2010_doqq_1ft.html For information on other air photos available for Minnesota, see: http://www.mngeo.state.mn.us/chouse/airphoto/ |
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| Section 2 | Data Quality Information | Top of full metadata | Top of page | |
| Attribute Accuracy | N/A | |||
| Logical Consistency | N/A | |||
| Completeness | Half-meter project area was scaled back in early April due to rapidly changing foliage conditions on the ground site. The state elected to delay acquisition in the southern project area until leaf-off 2011. | |||
| Horizontal Positional Accuracy | An overall accuracy for this product was targeted for 2.4 meters, CE95. Surdex collected Airborne GPS data at the time of image acquisition and supplemented with several control points surveyed by ground crews. Surdex used these ground control points and additionally some QC points dropped out of the Triangulation in order to validate the accuracy of the final DOQQ product. Of all the points collected, only 20 were easily readable in the final product and were used to calculate the stated residual. 0.85, value in meters, CE95. | |||
| Vertical Positional Accuracy | None - this is a horizontal only product. | |||
| Lineage | Multiple aircraft were deployed to east central Minnesota in early April 2010 for digital image acquistion during leaf-off conditions. Cessna Conquests equipped with Intergraph DMC (Digital Mapping Cameras) captured 4 band imagery over the project sites. Imagery was captured at an altitude of 16,500 feet above mean terrain, allowing up 5% cloud conditions per frame. All four bands (rgb natural color plus near infrared) of raw camera data was processed using Intergraph PPS software coupled with Surdex proprietary image handling software for color correction and dodging. Post processing of Airborne and Ground GPS data was performed with Waypoint Consulting's GrafNav software. Aerial Triangulation was completed using Intergraph ImageStation Automatic Triangulation and rectification of imagery to the state supplied 10 meter DEM was completed using Surdex proprietary software . Image mosaicking, QC and final DOQQ products were produced using proprietary Surdex software. | |||
| Source Scale Denominator | 41666 | |||
| Section 3 | Spatial Data Organization Information | Top of full metadata | Top of page | |
| Native Data Set Environment | Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.4000 | |||
| Geographic Reference for Tabular Data | ||||
| Spatial Object Type | Raster | |||
| Vendor Specific Object Types | ||||
| Tiling Scheme | ||||
| Section 4 | Spatial Reference Information | Top of full metadata | Top of page | |
| Horizontal Coordinate Scheme | UTM | |||
| Ellipsoid | Geodetic Reference System 80 | |||
| Horizontal Datum | ||||
| Horizontal Units | Meters | |||
| Distance Resolution | ||||
| Cell Width | 0.500000 | |||
| Cell Height | 0.500000 | |||
| UTM Zone Number | 15 | |||
| Section 5 | Entity and Attribute Information | Top of full metadata | Top of page | |
| Entity and Attribute Overview | Imagery has 4 Bands with the order of Red, Green, Blue and Near Infrared | |||
| Entity and Attribute Detailed Citation | ||||
| Section 6 | Distribution Information | Top of full metadata | Top of page | |
| Publisher | Minnesota Department of Natural Resources | |||
| Publication Date | 10/06/2010 | |||
| Contact Person Information | Nancy Rader GIS Data Coordinator Minnesota Geospatial Information Office 658 Cedar Street, Room 300 St. Paul, MN 55155 Phone: 651-201-2489 FAX: E-mail: clearing.house@state.mn.us |
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| Distributor's Data Set Identifier | Downloadable Data | |||
| Distribution Liability | For data or maps delivered online or by physical media by the Minnesota Geospatial Information Office (MnGeo) Limitations: Although extensive effort has been made to produce error-free and complete data, all geographic information has limitations due to the scale, resolution, date and interpretation of the original source materials. Users should consult available data documentation (metadata) for this particular data to determine limitations and the precision to which the data depict distance, direction, location or other geographic characteristics. Data may be subject to change without prior notification. No warranty: Data is provided 'as is,' without any warranty whatsoever, including but not limited to any warranty as to performance, merchantability or fitness for any particular purpose. Liability: The entire risk as to the results of the use of this data is assumed by the user. MnGeo is not responsible for any interpretation or conclusions made by those who acquire or use it. MnGeo shall not be liable for any direct, indirect, special, incidental, compensatory or consequential damages or third-party claims resulting from the use of this data, even if MnGeo has been advised of the possibility of such potential loss or damage. In states that do not allow the exclusion or limitation of incidental or consequential damages, this data may not be used. Redistribution conditions: In obtaining this data from MnGeo, it is understood that you and/or your organization have the right to use it for any purpose. If you modify it, you are encouraged to apply responsible best practices by documenting those changes in a metadata record. If you transmit or provide the data to another user, it is your responsibility to provide appropriate content, limitation, warranty and liability information as you see fit. Data delivered on electronic media: If data has been requested from MnGeo on magnetic media, CD or any other physical media, MnGeo will deliver it in the computer-readable format agreed upon with the requestor. MnGeo will reissue data if it is unreadable by correctly adjusted computer input devices or when the media is delivered in a damaged condition. Requests for reissue of this digital data product must be made within 30 days of the date shipped from MnGeo. |
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| Transfer Format Name | ||||
| Transfer Format Version Number | ||||
| Transfer Size | 0.000 | |||
| Ordering Instructions | These air photos are available via MnGeo's WMS service. Click on the link below for more information about WMS services and how to use them. | |||
| 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 | 08/05/2011 | |||
| Contact Person Information | Nancy Rader,
GIS Data Coordinator Minnesota Geospatial Information Office 658 Cedar Street, Room 300 St. Paul, MN 55155 Phone: 651-201-2489 FAX: E-mail: clearing.house@state.mn.us |
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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 | |||
This page last updated: 08/05/2011