Aerial Photography

High-resolution imagery is most often 1-foot resolution and covers 5000 feet x 5000 feet on the ground. Occasionally imagery at 1/2-foot or 2-foot resolution is collected. Most counties are flown once every three years as part of a statewide cycle, with the flying season usually running from November through March. This imagery is in State Plane projection and MrSid file format.

In 2016, an updated datum (NAD83_2011), was used for aerials for some counties. In these counties, the .sid files are delivered as they came from the vendor. We cannot recreate lower generation .sid files for these images. In the past, some GIS and CAD systems cannot use higher version sids. Check the image inventory to identify the counties using the updated datum.

Purchase or Download 2006-2016 Imagery Now »

DOQQ Historical Downloads

A digital orthophoto quarter-quadrangle (DOQQ) is a digital image of an aerial photograph that has been ortho-rectified. DOQQs are 1-meter resolution and covers an area on the ground of 3.75-minutes longitude by 3.75-minutes latitude.

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2004
ImageUnitsColorFormat
2004 RGB UTMMTRGBJPEG 2000
2004 RGB UTMMTRGBMrSID
2004 RGB State PlaneFTRGBJPEG 2000
2004 RGB State PlaneFTRGBMrSID
2004 RGB AlbersMTRGBJPEG 2000
2004 RGB AlbersMTRGBJPG
2004 RGB AlbersMTRGBMrSID
2004 CIR UTMMTColor InfraredJPEG 2000
2004 CIR AlbersMTColor InfraredJPEG 2000
2004 CIR State PlaneFTColor InfraredJPEG 2000
1999
ImageUnitsColorFormat
1999 CIR UTMMTColor InfraredMrSID
1999 CIR AlbersMTColor InfraredJPG
1999 CIR State PlaneFTColor InfraredMrSID
1995
ImageUnitsColorFormat
1995 CIR AlbersMTColor InfraredMrSID
1995 CIR AlbersMTColor InfraredJPG