I seem to recall USGS Earthexplorer providing current and historic 4 band NAIP imagery over the last few years. It appears that these data have been migrated to the National Map. However, the National Map only appears to have 2011 4-band NAIP imagery. The USDA FSA points users to the NRCS Geospatial Data Gateway, although these downloads only appear to be 3 band images without the nIR band.
- What are the best sources for downloading historic and current 4 band NAIP imagery at 1m spatial resolution?
- Are there any Oregon specific download sites?
Best Answer
To acquire NAIP for Oregon that includes the NIR band you must contact the OGEO office directly (gisgis.state.or.us or 503-378-2166). The NIR is not available on the download site.
When you refer to "historic" NAIP including the NIR band you are going to be somewhat out of luck. Many states still do not include NIR in their contracts and the USDA-APFO option of a NIR band was not officially added to the contract template, as part of NAIP, until 2009. To acquire this data you will have to go state by state. Colorado has an ftp site that you can download the current, quad-level, NAIP that includes the NIR.
I do not believe that Oregon added NIR until the last acquisition of NAIP, but there could be one additional year that includes NIR. For current NAIP (RGB only) for all states, APFO has a webmap service that can be added as a "GIS Server" in ArcGIS (http://gis.apfo.usda.gov/arcgis/services).