NOTICE: THIS IS A PROVISIONAL SERVICE AND MAY CHANGE AS DATA ARE UPDATED OR REPLACED. THESE INDIVIDUAL TILES ARE NOT CURRENTLY AVAILABLE FOR DOWNLOAD FROM NH GRANIT.

This orthoimagery data set includes 0.5' digital orthoimages in 8-bit 4-band (RGB-IR) GeoTIFF tiles covering New Hampshire.

The USGS NH Statewide Orthos project called for the planning, acquisition, processing, and derivative products of imagery data to be collected at a ground sample distance (GSD) of 0.5. Project specifications are based on the American Society of Photogrammetry and Remote Sensing (ASPRS) standards. The data were developed based on a horizontal projection/datum of NAD 1983 HARN StatePlane New Hampshire FIPS 2800 Feet, Foot US. Imagery data were delivered as 0.5 8-bit 4-band (RGB-IR) GeoTIFF tiles. Tiled deliverables contained 10807 individual 5000 ft x 5000 ft tiles. Ground Conditions: Imagery was collected in spring 2021 and 2022, while no snow was on the ground and rivers were at or below normal levels. In order to post process the imagery data to meet task order specifications and meet ASPRS horizontal accuracy guidelines, NV5 Geospatial utilized a total of 3 ground control points to assess the horizontal accuracy of the data. These data depict geographic features on the surface of the earth. The dataset was created to current imagery data for New Hampshire.
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