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Ramsey County Orthophotography 2009


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Metadata created using Minnesota Geographic Metadata Guidelines


Metadata Summary

Originator Ramsey County
Abstract
Kucera International Inc. obtained color aerial photography covering Ramsey County and portions of Anoka, Dakota, Hennepin, and Washington counties on April 14, 2009.    Kucera used elevation models provided by each of the counties mentioned above to create digital ortho images.  The DEM for Ramsey  County was comprised of client provided data, supplemented as necessary for ortho production.
Browse Graphic None available
Time Period of Content Date
Currentness Reference
ground condition
Access Constraints
This data set is available to everyone.  Fees and policy are published in the Ramsey Data Fee Schedule.  Charges are variable and are subject to change.  See the Ramsey County Fee Schedule for specific information on fees and policy.
Use Constraints
COPYRIGHT NOTICE The data is Copyright © by the County of Ramsey. All rights reserved. Except as expressly provided herein, no part of this data may be copied, reproduced, sold, transferred, or transmitted in any form, or by any means, whether graphic, electronic, or mechanical, including photocopying, recording, or by an information storage or retrieval system, without express prior written permission of the County of Ramsey.
Distributor Organization Ramsey County Surveyor's Office
Ordering Instructions
Contact distributer
Online Linkage None available


Full metadata for
Ramsey County Orthophotography 2009

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 Ramsey County
Title Ramsey County Orthophotography 2009
Abstract
Kucera International Inc. obtained color aerial photography covering Ramsey County and portions of Anoka, Dakota, Hennepin, and Washington counties on April 14, 2009.    Kucera used elevation models provided by each of the counties mentioned above to create digital ortho images.  The DEM for Ramsey  County was comprised of client provided data, supplemented as necessary for ortho production.
Purpose
This data (digital orthophotos) can serve a variety of purposes, from general planning to field reference for spatial analysis to a tool for revision of vector information at ground level.  It can also serve as a reference layer for GIS.
Time Period of Content Date
Currentness Reference
ground condition
Progress Complete
Maintenance and Update Frequency Scheduled to update every 3 years
Spatial Extent of Data
Bounding Coordinates -93.234052
-92.962131
45.138911
44.877693
Place Keywords Ramsey County
Theme Keywords Aerial Photography
Theme Keyword Thesaurus NONE
Access Constraints
This data set is available to everyone.  Fees and policy are published in the Ramsey Data Fee Schedule.  Charges are variable and are subject to change.  See the Ramsey County Fee Schedule for specific information on fees and policy.
Use Constraints
COPYRIGHT NOTICE The data is Copyright © by the County of Ramsey. All rights reserved. Except as expressly provided herein, no part of this data may be copied, reproduced, sold, transferred, or transmitted in any form, or by any means, whether graphic, electronic, or mechanical, including photocopying, recording, or by an information storage or retrieval system, without express prior written permission of the County of Ramsey.
Contact Person Information Curt Peterson, GIS Supervisor
Ramsey County Surveyor's Office
1425 Paul Kirkwold Drive
Arden Hills , MN 55112-3933
Phone: 651-266-7172
Fax: 651-266-7180
Email : curtis.peterson@co.ramsey.mn.us
Browse Graphic None available
Browse Graphic File Description
Associated Data Sets
Graphic:
Annotation (parcel, road and water map text)
Info  (landties, cartographic elements)  
StrCenterlines  (road centerlines)
Point (land ownership points)
Line (land division outlines)
ParComp (land division areas)
Parcel (land ownership regions)
PLS (Public Land Survey)

Bridges (Bridges and overpasses)
Bridge Lines (Outlines of bridges and overpasses)
Buildings (Structures >=80 sq. ft.)
Building Lines (Outline of structures >= 80 sq. ft.) 
Contours (2' contour lines)  
Dams (Locks and dams)
Dam Lines (Outlines of locks and dams)
Roads (Road edges - thoroughfares and cul-de-sacs)
Railroads (Centerline of tracks)
Water (Open water areas)
Waterlines (Outlines of open water areas)
Water Towers 
Water Tower Lines (Outlines of water towers)

Section 2 Data Quality Information Top of full metadata Top of page
Attribute Accuracy
NONE
Logical Consistency
Compliance with the accuracy standard was ensured by the placement of GPS ground control prior to the acquisition of aerial imagery. The following checks were performed: 1. The ground control and airborne GPS/INS data stream were validated through an aerotriangulation bundle adjustment using Leica's ORIMA and CAP-A software. 2. Digital orthophotography was validated through a visual inspection of control points, edge matching and general image quality.
Completeness
The following methods were used to ensure image quality: 1. Use of targeted ground control during image acquisition. 2. Use of GPS/INS during image acquisition. 3. Checking of controls against ortho product. 4. Post ortho accuracy approval checks for overall image quality (tone, color balance, etc.).
Horizontal Positional Accuracy
Using the National Standard for Spatial Data Accuracy, the data set tested 2.5 Feet horizontal accuracy at 95% confidence level.
Vertical Positional Accuracy
Not applicable as it pertains to a two-dimensional raster image
Lineage
The aerial imagery was captured with Leica Geosystems ADS40 digital cameras, sensor heads 30104, 30102 and 30111. The ADS40 uses a 'pushbroom' method of data collection with multiple CCDs using forward, rearward and nadir orientations along planned flight lines. Each collects data in one of the pan, red, green, blue or NIR spectral bands. This results in one image per CCD for each flight line. The aerial images are used for softcopy aerotriangulation of the project image strips and the production of orthophotos.
Metadata imported.
Metadata imported.
Source Scale Denominator 1200

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 2; ESRI ArcCatalog 9.3.1.3000
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
Ellipsoid GRS80
Horizontal Datum NAD83
Horizontal Units Feet
Distance Resolution
Cell Width 0.500000
Cell Height 0.500000
Map Projection Name Lambert Conformal Conic

Section 5 Entity and Attribute Information Top of full metadata Top of page
Entity and Attribute Overview
Color orthophotos are comprised of pixels. Each pixel is assigned a value of 0 to 255. That number will refer to a color look-up table which contains red, green and blue (RGB) values, each from 0 to 255, for that pixel within the image.
Entity and Attribute Detailed Citation
None

Section 6 Distribution Information Top of full metadata Top of page
Publisher Ramsey County Surveyor's Office
Publication Date
Contact Person Information David Wilford, GIS Technician
Ramsey County Surveyor's Office
1425 Paul Kirkwold Drive
Arden Hills , MN 55112-3933
Phone: 651-266-7175
Fax: 651-266-7180
Email: david.wilford@co.ramsey.mn.us
Distributor's Data Set Identifier Ramsey County Surveyor's Office Orthophotos
Distribution Liability
DISCLAIMER EXCEPT AS EXPRESSLY STATED HEREIN, THIS DATA IS PROVIDED AS IS WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  LICENSEE BEARS ANY AND ALL RISK RELATING TO QUALITY AND PERFORMANCE OF THIS DATA. 

Limit on Liability This data is not a legally recorded map or survey and is not intended to be used as one. This data is a compilation of records and information from various state, county, and city offices, and other sources, and should be used for reference only.  

In no event will the County of Ramsey be liable for direct, indirect, special, incidental, or consequential damages arising out of the use of, or inability to use, the data, even if advised of the possibility of such damages. Specifically, the County of Ramsey is not responsible for any costs including, but not limited to, those incurred as a result of lost profits or revenue, loss of use of data, the costs of recovering such programs or data, the cost of any substitute programs or data, claims by third parties, or for other similar costs. 

The sole liability of the County of Ramsey and the licensee's exclusive remedy for any substantial defect which impairs the licensee's use of the data for purposes stated herein shall be the right to terminate this license and refund any fee paid.
Transfer Format Name
Transfer Format Version Number
Transfer Size 0.000
Ordering Instructions
Contact distributer
Online Linkage none available

Section 7 Metadata Reference Information Top of full metadata Top of page
Metadata Date
Contact Person Information Chris Ulrich, GIS Analyst
Ramsey County Surveyor's Office
1425 Paul Kirkwold Drive
Arden Hills , MN 55112-3933
Phone: 651-266-7176
Fax: 651-266-7180
Email: christina.ulrich@co.ramsey.mn.us
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


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