How often is orthoimagery in The National Map updated and what are the acquisition dates?

Orthoimagery (georectified aerial photography) available through The National Map Downloader and The National Map Services is from the USDA Farm Service Agency's National Agricultural Imagery Program (NAIP), which is 1-meter resolution. Generally, NAIP imagery is refreshed on a 3-year cycle with approximately one third of the continental U.S. flown each year. 

The month and year of imagery acquisition can be found in the "Info/Metadata" links in the product search. The acquisition date is also part of the file name.

Learn more: USGS National Geospatial Program Imagery

Related Content

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What is a digital orthophoto quadrangle (DOQ) or orthoimage?

A digital orthophoto quadrangle (DOQ)--or any orthoimage--is a computer-generated image of an aerial photograph in which displacements (distortions) caused by terrain relief and camera tilts have been removed. It combines the image characteristics of a photograph with the geometric qualities of a map. Unlike an aerial photograph, an orthoimage has...

Are the scanned aerial photographic images georectified?

Scans of traditional aerial photography film products (air photos) are not georectified . The USGS does, however, offer several orthoimagery (georectified aerial photograph) products: Digital Orthophoto Quadrangle (DOQ) High Resolution Orthoimagery (HRO) National Agriculture Imagery Program (NAIP, NAIP Plus) NAIP orthoimagery has been collected...

How can I download orthoimagery in bulk?

Orthoimagery is offered through a bulk data application in EarthExplorer . Go to the EarthExplorer Help page and select "Bulk Download Tutorial". To receive bulk data via external hard drive, you must supply the hard drive(s) within our specifications, pay for shipping the drive(s), and provide a paid return label or a carrier account number. Send...

Why does my orthoimagery search on The National Map return multiple tiles for downloading?

Orthoimagery is usually very large in file size, so we stage the data in "tiles" that can be reasonably transported over the Internet. Orthoimagery from the National Agriculture Imagery Program (NAIP) that is distributed via The National Map Data Download is in compressed 10:1, JPEG2000 format in 3.75 minute x 3.75 minute tile extents. A larger...

How do I download orthoimagery products and what are the available formats?

Download orthoimagery (georectified aerial photographs) using EarthExplorer , which has the full catalog of USGS orthoimagery and aerial photography, or The National Map downloader, which has NAIP orthoimagery only. EarthExplorer : Products Overview Format varies by type of orthoimagery: Native format, Georeferenced Tagged Image File Format (...

How much area does an aerial photograph cover?

The area covered by an aerial photograph (air photo) depends on the scale of the imagery. Most air photos were taken on 9 x 9 inch film. The chart below reflects coverage for a variety of photographic scales. Scale 1 inch = feet 1 side (miles) Area (square miles) 1:12,000 1000 1.70 2.9 1:20,000 1667 2.84 8.1 1:24,000 2000 3.41 11.6 1:40,000 3333 5...
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Date published: October 21, 2019

Aerial Photo Scan Reveals Rare Image of Two Airplanes in Flight

Every work day at the USGS Earth Resources Observation and Science (EROS) Center, contractor Mike Austad pulls up a chair and begins scanning aerial photographs of the Earth’s surface into the massive public database that is EarthExplorer.

Date published: August 27, 2018

Hazards Data Distribution System Releases Thousands of Aerial Images of Kilauea Impact

The eruptive behavior of the Kilauea volcano that began in May 2018 on Hawaii’s Big Island has created an unparalleled opportunity for understanding volcanic systems.

Date published: November 1, 2016

USGS National Map Orthoimagery Map Services Transition and Other Map Service Changes

As part of The National Map transition to cloud hosting, several of the National Map NAIP Orthoimagery Services will be provided under new URLs.

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National Agriculture Imagery Program (NAIP)
July 2, 2011

National Agriculture Imagery Program (NAIP)

A full NAIP scene (top) along with a close-up of the landscape detail from this 2011 tile near Waitsburg, Washington.

Updated 2015 version of the Green River Lakes quadrangle with orthoimage

Updated 2015 version of the Green River Lakes quadrangle with orthoimage

Updated 2015 version of the Green River Lakes quadrangle with orthoimage turned on. (1:24,000 scale)

Air photo showing distorted path of pipeline as it crosses hills and valley, and orthophoto showing the true, straight path

Aerial Photograph vs. Orthoimage

Comparison of an aerial photograph and an orthophoto (orthoimage) from the Tenth Legion quadrangle in Virginia near the town of Arkton. The aerial photo shows a straight pipeline that is distorted by displacements caused by camera tilting and terrain relief (topography). The orthophoto removes the effects of tilt and relief and shows the true, straight path of the pipeline

High Resolution Orthoimagery

High Resolution Orthoimagery

USGS High Resolution Orthoimagery for Puerto Rico and the U.S. Virgin Islands

National Agriculture Imagery Program aerial photograph (2014) of part of the Upper Missouri River near Poplar, Montana

National Agriculture Imagery Program aerial photograph (2014)

National Agriculture Imagery Program aerial photograph (2014) of part of the Upper Missouri River near Poplar, Montana. The river is flowing from left to right. The complex channel may promote retention of boats as well as drifting pallid sturgeon larvae.