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Ramsey County Orthophotography 2006


This page last updated:
Metadata created using Minnesota Geographic Metadata Guidelines


Metadata Summary

Originator Ramsey County
Abstract
Martinez Corporation obtained color aerial photography covering Ramsey County and portions of Anoka, Dakota, Hennepin, and Washington counties.  Great Lakes Aerial Survey (GLAS) was contracted to obtain the aerial photography on April 9, 2006.  Martinez Corp. used elevation models provided by each of the counties mentioned above to create digital ortho images.
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 2006

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 2006
Abstract
Martinez Corporation obtained color aerial photography covering Ramsey County and portions of Anoka, Dakota, Hennepin, and Washington counties.  Great Lakes Aerial Survey (GLAS) was contracted to obtain the aerial photography on April 9, 2006.  Martinez Corp. used elevation models provided by each of the counties mentioned above to create digital ortho images.
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 -93.234086
-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:
Contours (2' contour lines)  
Annotation (parcel, road and water map text)
Info  (landties, cartographic elements)  
StrCenterlines  (road centerlines)
Point (land ownership points)
ParPts (land ownership points w/ tabular data)
Line (land division outlines)
ParComp (land division areas)
Parcel (land ownership regions)
PLS (Public Land Survey)

Data Sets: 
COREDB.DBF  (Core parcel attribute db)  
GRM.accdb
ECURTAX (current tax table)
ENAMADD (name & address table)
ENAMADDO (name & address other table)
EPARDES (parcel description table)
ESPASMT (special assessments table)
EVALUES (tax values table)
CAMA.accdb
APTDATA (Assessor's apartment description table)
ATTGARAGE (Assessor's attached garage table)
COMMDATA (Assessor's commercial building description table)
DETGARAGE (Assessor's detached garage table)
DWELLDATA (Assessor's residential dwelling description table)
LANDDATA (Assessor's land description table)
PARCELDA (Assessor's parcel description table)
SALEDATA (sales table)

Section 2 Data Quality Information Top of full metadata Top of page
Attribute Accuracy
NONE
Logical Consistency
NONE
Completeness
NONE
Horizontal Positional Accuracy
Using the National Standard for Spatial Data Accuracy, the data set tested 0.672 Feet horizontal accuracy at 95% confidence level.  This data exceeds the ASPRS Class 1 standards.
Vertical Positional Accuracy
Not applicable as it pertains to a two-dimensional raster image
Lineage
Aerial Photography was scanned at a resolution of 14 microns (1814 DPI) using a Vexcel VX4000 Image Scanning System.  The scanned imagery was aero-triangulated and geo-referenced to the Ramsey County Coordinate System (nonHARN).  The imagery was tone balanced so that the color of the imagery was accurate and consistent throughout the entire study area, seamlines were manually selected. Orthophotos were created using elevation models obtained from Ramsey, Anoka, Washington and Dakota Counties.  The elevation models were reviewed and edited to represent the terrain conditions of the 2006 aerial photography prior to the ortho-rectification process. The orthophotos were reviewed for geometric and radiometric accuracy as well as tone consistency. Bridges and overpasses were corrected to the appropriate horizontal position and artifacts were removed using Photoshop methods.
Metadata imported.
Source Scale Denominator

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
Wild RC30 Calibrated Focal Length: 153.465mm.  Orthophoto Pixel Size = 0.5
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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