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Dane County Land Information Office

Fly Dane Projects

Fly Dane is a regional partnership that allows local agencies to pool their resources for periodic updates of orthophotography, elevation, and planimetric data. Below are some recent projects we have taken part in.

Fly Dane 2024

Fly Dane 2024 data acquisition is planned for Mid-March to end of April. Ayres Associates was selected as the vendor and partner for this project.  This is an imagery only project and will be first countywide 3-inch resolution acquisition.  This was only possible with municipal and regional partners contributing to the project.

Imagery

  • Developed 3-inch resolution, 4-band, color imagery, countywide
  • FGDC compliant metadata

Project Timeline

 
Task Approximate Time Fram
Imagery flight plan finalized January 2024
Control Layout January 2024
Establish ground control and targeting (imagery) February-March 2024
Imagery Acquisition March-April 2024
Analytical aero-triangulation  April 2024
Imagery acquisition acceptance May 2024
Ortho-rectification surface development from updated surface May 2024
Pilot area imagery production June 2024
Pilot area imagery delivery and review June 2024
Imagery quality review by the county July-September 2024
Final orthophotography delivery 3-inch September-October 2024

 

Fly Dane 2022

Fly Dane 2022 data acquisition took place in April 2022. Ayres Associates was selected as the vendor and partner for this project.  The project acquired updated aerial imagery for all of Dane County and terrain data for the City of Madison.

Imagery

  • Developed 6-inch resolution, 4-band, color imagery

Partner Buy-Ups

  • Developed 3-inch resolution, 4-band color imagery, for areas specified by municipal partners.
  • Acquired a new LiDAR based terrain model for City of Madison.

Fly Dane 2020

Fly Dane 2020 data acquisition took place in April 2020. Ayres Associates was selected as the vendor and partner for this project.  The project acquired updated aerial imagery for all of Dane County. This project marked a change in the acquisition timeline from a 3-year cycle to a 2-year cycle.

Imagery

  • Developed 6-inch resolution, 4-band, color imagery, countywide

Partner Buy-Ups

  • Developed 3-inch resolution, 4-band color imagery, for areas specified by municipal partners.

Fly Dane 2017

Fly Dane 2017 data acquisition got under way in April 2017. Ayres Associates was selected as the vendor and partner for this project.

The 2017 acquired updated aerial imagery and terrain data for all of Dane County.

Imagery

  • Developed 6-inch resolution, 4-band, color imagery, countywide

Terrain

  • Acquired a new county-wide LiDAR based terrain model
  • Met Quality Level 2 specifications with a nominal point spacing of 0.7 meters
  • Classified LAS point cloud
  • Derivative bare earth and first return terrain surfaces
  • Derivative contour smoothing, cartographically pleasing 1-foot contours
  • Derivative 2-D, countywide forest canopy polygon dataset
  • FGDC compliant metadata

Partner Buy-Ups

  • Developed 3-inch resolution, 4-band color imagery, for areas specified by municipal partners.
  • No enhanced products were requested by partners

Fly Dane 2014

The Fly Dane Partnership undertook a 2014 orthophotography project. This project marked a change in the acquisition timeline and that the partnership moved from a 5-year cycle to a 3-year cycle. This proposal was reviewed by the partnership and approved by the Dane County Land Information Council.  The 2014 project acquired updated aerial imagery for all of Dane County.

Imagery

  • Developed 6-inch resolution, 4-band, true color imagery countywide
  • Imagery registered to the 2009 digital terrain surface

Additional Products

The imagery was used to update the county street centerline and building footprint databases.

The Fly Dane Partnership is open and ongoing. New partners are welcome to join. If you're interested in more information or becoming a member, please contact Fred Iausly (iausly@countyofdane.com)