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Orthophotos Index, 2000

Orthophotos 2000 - Panchromatic

Name(s) Orthophotos; Black & White; Panchromatic; Grayscale
Flight Date November 2000, March 2001 (Depending on flight area)
Spatial Domain Urbanized Tucson Area: Marana, Oro Valley, Sahuarita, Green Valley, Unicorporated Pima County
Format Tagged Image File Format ( TIFF uncompressed)
Feature type raster
Resolution 0.5, 1, 4, 16 foot resolution
Horizontal Control Arizona State Plane Central Zone NAD83 (international feet)
Additional info
  • TFW (tiff world file) lists the coordinate for the upper left corner of the image and cell size
  • Total aerial coverage consist of 678 sections
  • Aerial photo height: +- 3,600 feet
  • 9x9 contacts on file at PAG
Source Pima Association of Governments

Orthophotos 2000 - Digital Terrain Models - DTMs

Name(s) DTM-Digital Terrain Models
Format ASCII Point files, based on 30 foot grids
Control NAD83(92 adjustment) and NGVD88 files provided in NAVD29 and NGVD88
Accuracy Relates to standards for 1' = 200', 2.00 foot c.i. photogrammetric mapping (verticle accuracy is +/- 0.5 feet on any given point of the dataset
File Specifications
  • DTM consist of line (.lf) , point (.pt) XYZ (East, North, Elevation)
  • DTM include breaklines, mass points and exclusion polygons
  • DTM file structure utilizes a number two (2) for breaklines and number eight (8) for exclusion polygons
  • DTM collected at 50.00 foot intervals (Grid)

Orthophotos 2000 - Digital Elevation Models - DEMs

Name(s) DEM-Digital Elevation Models
Format ASCII Point Files, based on 30 five foot grids
Control NAD83(92 adjustment) and NGVD88 files provided in NAVD29 and NGVD88
Accuracy Relates to standards for 1' = 200', 2.00 foot c.i. photogrammetric mapping (verticle accuracy is +/- 0.5 feet on any given point of the dataset
File Specifications
  • DEM should not be utilized to create contours
  • DEM are line (.lf) files only
  • DEM collected at 30.00 foot intervals

Orthophotos 2000 - 2.00 foot Contours

Name(s) 2.00 foot Contours or 10.00 foot Contours in limited areas
Creation Date Created with delivered imagery
Spatial Domain Urbanized Tucson area; Unincorporated Pima County
Feature type Lines
Origination Contour created from DTMs
Horizontal/Vertical State Plane Coordinate System NAD83
Two vertical controls utilized:NGVD29 & NAVD88
VERTCON software utilized to obtain the orthometric height
Format ESRI shapefiles (shp)
AutoCad Rev14 drawings (dwg

Orthophotos 2000 - Exclusionary Polygons

Name(s) Exclusionary Polygons
Creation Date Created with delivered imagery
Spatial Domain Urbanized Tucson area; Unincorporated Pima County
Feature Type Polygons (e.g. 151113ex.shp)
Data Fields Field Name: Type
2: 2' contour interval
3: 2' contour interval within an exclusionary polygon
10: 10' contour interval
11: 10' contour interval within an exclusionary polygon
100:100' contour interval
101: 100' contour interval within an exclusionary ploygon
Origination Created from elevation model
Horizontal/Vertical State Plane Coordinate System NAD83
One vertical controls utilized:NGVD29 & NAVD88 
Format ESRI Shapefiles (shp)
 

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