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@danecounty.gov)