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| USGS › Geography › Earth Resources Observation and Science (EROS) Center |
Color-infrared NAPP Photo of San Diego, CA
Black & White NAPP Photo of San Diego, CA
The National Aerial Photography Program (NAPP) provides a standardized set of cloud-free aerial photographs covering the conterminous United States over 5 to 7 year cycles. The program began in 1987 and continues to be our most recent and consistent source of high-quality aerial photography.
The photographs were acquired from an altitude of 20,000 feet and are available in black & white (B/W) or color-infrared (CIR), depending on location and date. Each photo is centered on one-quarter section of a 7.5-minute USGS quadrangle and covers an area about 5.5 x 5.5 miles.
| High Resolution Scanned Product | |||
|---|---|---|---|
| Film Size | Micron Size | Black and white (B/W) | Color-infrared (CIR) |
| 9 × 9in | 21 Micron(1200 dpi) * | 117 MB | 350 MB |
| 14 Micron (1800 dpi) | 262 MB | 787 MB | |
| 7 Micron (3600 dpi) | 1.3 GB | Not Available** | |
| Data available on DVD or via FTP Download. | |||
* Denotes the recommended micron size.
** Color/CIR film source is not available at a 7 micron spot size because the file size is too large and/or there are no advantages below the 14 micron spot size.
The above sizes may vary due to scanning more than just image data. The files are created in TIFF format. With our policy to scan the surrounding metadata and adding the USGS logo, the actual image size will generally be larger than the estimates above.
The file sizes are about 15 megabytes for black and white images and 40 megabytes for color images. The files are stored in TIFF format. The medium-resolution files are created at about 400 dpi.
All NAPP and NHAP photography can be searched and ordered on EarthExplorer, GloVis (a browse-based search engine), and PhotoFinder (a "quick and easy" search and order tool devoted solely to NAPP photos).
All of the NAPP and NHAP imagery have been digitized. Products can be found on EarthExplorer, GloVis or PhotoFinder.
NAPP and NHAP photography may also be ordered through the USDA Aerial Photography Field Office (APFO)
Businesses that can provide printed images from USGS digital data.
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