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snippet: USDA Forest Service - Southwestern Region requires orthophotography products for the Tonto National Forest 1958-59 R3 Resource Orthophotography Project to support treatment planning and monitoring efforts.
summary: USDA Forest Service - Southwestern Region requires orthophotography products for the Tonto National Forest 1958-59 R3 Resource Orthophotography Project to support treatment planning and monitoring efforts.
accessInformation: USDA - APFO - GTAC, 2/25/2022
thumbnail: thumbnail/thumbnail.png
typeKeywords: ["Data","Service","Image Service","ArcGIS Server"]
description: This data set consists of 25 cm pixel resolution 1 band, 8 bit ortho images captured between Jun and October 1958 and december 1959 due to a refight of missed areas. This imagery is at a photo scale of 1:15840. The aerial film was scanned at 12.5 microns with a high precision photogrammetric scanner. Output format of the scans are uncompressed TIF format and were later converted to JPEG format and mosaicked after ortho correction and color balancing in Metashape. The project location is in the Tonto National Forest. The project coordinate system is UTM, Zone 13 North, NAD 83, Meters. Slight systematic radiometric differences may exist between adjacent ortho image files; these are due primarily to differences in source image capture dates and sun angles along flight lines. These differences can be observed in an image's general lightness or darkness when it is compared to adjacent ortho image file coverages. Tonal balancing and color adjustments may be performed over a group of images during the mosaicking process which may serve to lighten or darken adjacent images for better color tone matching. All GeoTIFF tagged data and image file sizes are validated using commercial GIS software to ensure proper loading before being archived. This validation procedure ensures correct physical format and field values for tagged elements. Seamlines and tile edges are visually inspected. Ortho images are visually inspected for completeness to ensure that no gaps or image misplacements exist within and between adjacent images. These images are derived by mosaicking multiple images to ensure complete coverage. Source imagery is cloud free.
licenseInfo: None
catalogPath:
title: TNF1958
type: Image Service
url: https://gila-gis3.gila.co.az.us/arcgis/services/Imagery/TNF1958/ImageServer
tags: ["Gila County; Tonto National Forest"]
culture: en-US
name: TNF1958
guid:
spatialReference: NAD_1983_UTM_Zone_12N