Metadata for Flathead Basin 2009 Natural Color Aerial Photos

Identification Information
Data Quality Information
Spatial Reference Information
Distribution Information
Metadata Reference Information

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Identification Information:

Citation:

Originator: 3Di West (GeoTerra Mapping Group)
Originator: Watershed Sciences, Inc.
Originator: Montana Depatment of Natural Resources and Conservation
Publication date: 2010
Title: Flathead Basin 2009 Natural Color Aerial Photos
Online linkage: http://apps.msl.mt.gov/Geographic_Information/Data/Aerial_Photos/flathead_col_2009.aspx

Abstract:

The data encompasses portions of Flathead and Lake Counties in northwestern Montana, covering the upper Flathead Valley, Polson, and the shorelines of Whitefish, Swan, and Flathead Lakes.

Each tile is an orthorectified natural color image collected from a Vexcel UltraCam XP camera. The pixel resolution of the imagery is 1 foot. The images were acquired between September 23 and September 25, 2009.

Time period of content:

Beginning date: 09/23/2009
Ending date: 09/25/2009
Currentness reference: ground condition

Status:

Progress: Complete
Maintenance and update frequency: None planned

Access constraints: None

Use constraints:

The Montana State Library Geographic Information Services provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time.

Point of contact:

Stephen Story
Montana Department of Natural Resources and Conservation
1424 9th Ave
Helena, MT 59620-1601
Telephone: 406-444-6664
E-Mail: sestory@mt.gov

Data Quality Information:

Logical consistency report:

Photos were acquired with 60% overlap and 30% sidelap using Vexcel UltraCAM XP large format aerial mapping camera. Aerial photos were collected by Aero-Graphics.

Completeness report:

Orthophotography data has been collected and processed for all areas within the project study area.

Horizontal Positional Accuracy Report:

The orthoimagery was compiled to meet National Map Accuracy Standards:
Horizontal Accuracy: 1"=200' not more than 10% of all well defined planimetric features are in error by more than 4.0'.

Aerial Triangulation: RMSE tie points: 0.250' RMSE of GPS surveyed control targets: 0.249'

Quantitative horizontal positional accuracy assessment:

Horizontal positional accuracy value: Mean Value of standard deviation from AT adjustment: 0.591'
Horizontal positional accuracy explanation:: Aerial Triangulation: RMSE of tie points: 0.250' RMSE of GPS surveyed control targets: 0.249'

Lineage:

Process step:: Acquisition.

The aerial photographs were collected from September 23-25, 2009. The survey used Vexcel UltraCam XP large format aerial mapping camera. Photos were collected at 60% overlap and 30% sidelap.
Process step:: Processing.

Aerial Triangulation was performed on the block of collected photographs. Surveyed aerial targets were used as ground control and used in conjunction with tie points (relative image points) to correctly place imagery relative to the ground surface. All imagery was orthorectified using the bare earth LiDAR surface model that was collected and processed with this dataset.

Spatial Reference Information:

Horizontal coordinate system definition:

Grid coordinate system name: State Plane Coordinate System

SPCS zone identifier: 2500

Lambert conformal conic:

Standard parallel: 45.000000
Standard parallel: 49.000000
Longitude of central meridian: -109.500000
Latitude of projection origin: 44.250000
False easting: 600000.000000
False northing: 0.000000

Planar distance units: U.S. Survey Feet

Geodetic model:

Horizontal datum name: D_North_American_1983_HARN
Ellipsoid name: Geodetic Reference System 80
Semi-major axis: 6378137.000000
Denominator of flattening ratio: 298.257222

Distribution Information:

Distributor:

Montana State Library
P.O. Box 201800
Helena, Montana 59620-1800
Telephone: 406-444-5354
E-Mail: geoinfo@mt.gov

Resource description: Downloadable data

Distribution liability:

Standard order process:

Digital form:

Online option:

Metadata Reference Information:

Metadata date: 10/31/2013

Metadata review date: 11/19/2010

Metadata contact:

Watershed Sciences, Inc.
257 B SW Madison Ave
Corvallis, OR 97333
Telephone: 541-752-1204
E-Mail: watershedsciences.com