View Metadata
Aerial Imagery for Winnebago County, WI 2025
- Identification Information
- Spatial Reference Information
- Data Quality Information
- Distribution Information
- Content Information
- Spatial Representation Information
- Metadata Reference Information
Identification Information
- Citation
- Title
- Aerial Imagery for Winnebago County, WI 2025
- Originator
- Winnebago County
- Creation Date
- 2025-04-06
- Publication Date
- 2025-04-06
- Geospatial Data Presentation Form
- mapDigital
- Collection Title
- Aerial Imagery
- Abstract
- Ayres Associates provided Winnebago County, Wisconsin, with digital, 4-band orthoimagery services in 2025 as part of WROC. The aerial imagery was collected on April 6th, 12th, 13th, 16th, 26th, and May 4th using an UltraCam Eagle 4.1 sensor at 7.25 cm GSD mounted in a fixed-wing aircraft. Aerial imagery was collected to support 0.25 foot ground sample distance (GSD) orthoimagery at 1"=50' map scale. The 3-inch pixel orthoimagery was produced to meet or exceed 0.66 foot RMSEH according to ASPRS Positional Accuracy Standards for Digital Geospatial Data 2024. Resultant orthoimagery was rectified to a DEM created from existing lidar. Orthoimagery was delivered in GeoTiff and MrSID tiles and a project-wide MrSID mosaic. The orthoimagery was delivered according to a PLSS quarter section tile schematic. The project area covers approximately 600 square miles. Supplemental Information: The Wisconsin Regional Orthoimagery Consortium (WROC) is a multi-entity group of county members and partners led by regional planning commissions (RPCs) and WROC representatives from Ayres Associates. The goal of the consortium is to build and sustain a multi-participant program to acquire digital orthoimagery and elevation data throughout Wisconsin. Orthoimagery was collected for Winnebago County in 2025 to provide consistent deliverable products and accuracy standards for each of the participating entities.
- Purpose
- This data is intended for reference and mapping purposes, and may be used for basic applications such as viewing, querying, and map output production, or to provide a basemap to support graphical overlays and analysis with other spatial data. [This project established digital, 4-band orthoimagery for Winnebago County, Wisconsin as part of the Wisconsin Regional Orthoimagery Consortium (WROC).]
- Supplemental Information
- This is an archived dataset held at UW-Madison.
- Temporal Extent
- Time Instant
- 2025-04-06T00:00:00
- Bounding Box
- West
- -88.88672457
- East
- -88.40287565
- North
- 44.24411173
- South
- 43.89287659
- ISO Topic Category
- imageryBaseMapsEarthCover
- Place Keyword
-
Winnebago County, Wisconsin
- Place Keyword Thesaurus
- Theme Keyword
-
Wisconsin Regional Orthoimagery Consortium (WROC)
- Theme Keyword Thesaurus
- Resource Constraints
- Use Limitation
- Although this data is being distributed by the University of Wisconsin-Madison, no warranty expressed or implied is made by the University as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the University in the use of this data, or related materials. [Not to be used for purposes other than those strictly outlined in the 2025 WROC program.]
- Status
- completed
- Maintenance and Update Frequency
- notPlanned
- Language
- eng
- Credit
- Winnebago County, Ayres Associates
- Point of Contact
- Contact
- Adam Dorn
- Position Name
- GIS Administrator
- Delivery Point
- 112 Otter Avenue, 3rd floor, PO Box 2808
- City
- Oshkosh
- Administrative Area
- Wisconsin
- Postal Code
- 54901
- Country
- US
- adorn@co.winnebago.wi.us
- Phone
- (920) 232-3336
Spatial Reference Information
- Reference System Identifier
- Code
- 7594
- Code Space
- EPSG
- Version
- 8.8(10.4.0)
Data Quality Information
- Lineage
- Process Step
- Description
- Ground control consisted of photo identifiable surveyed points. The imagery was collected using an UltraCam Eagle 4.1 sensor at 7.25 cm GSD. Image quality was verified during the post flight review phase. Factors considered during this review included, but were not limited to, the presence of cloud cover, contrails, light conditions and sun flare. A rigorous Aerotriangulation process was performed and supplemented by the photo ID survey points. The triangulated strips were rectified to a DEM created from existing lidar. The imagery was mosaicked using manual seamlines generation and tone/color balanced to a project-wide consistency. PLSS section RGBN tiles were extracted from the mosaic and each individual tile was reviewed for artifacts and anomalies and adjusted as part of quality control procedures. The images were reviewed for rectification problems such as bridge displacements and seamline issues caused by the underlying digital elevation model. When necessary, local corrections to the imagery were performed to minimize such effects.
- Process Date
- 2025-05-05T00:00:00
- Process Step
- Description
- Added data to the WisconsinView Data Archive (WDA).
- Process Date
- 2026-07-14T00:00:00
Distribution Information
- Format Name
- GeoTIFF
- Format Version
- 1.0
- Distributor
- UW-Madison
- Online Access
- https://web.s3.wisc.edu/wsco-wisconsinview/imagery/counties/WI/Winnebago/2025
- Protocol
- Name
- Access from GeoData@Wisconsin
- Function
- download
Content Information
- Content Type
- image
Spatial Representation Information
- Raster
- Number of Dimensions
- 2
- Column Count
- 11321
- Row Count
- 11666
- Cell Geometry Type
- area
- Corner Points
- Point
- 730565.595000 457644.216000
- Point
- 730565.595000 460560.716000
- Point
- 733395.845000 460560.716000
- Point
- 733395.845000 457644.216000
- Center Point
- 731980.720000 459102.466000
Metadata Reference Information
- Hierarchy Level
- dataset
- Metadata File Identifier
- 0f009192-aa94-462d-918c-59232e8c8b45
- Metadata Date Stamp
- 2026-07-14
- Metadata Standard Name
- ISO 19139 Geographic Information - Metadata - Implementation Specification
- Metadata Standard Version
- 2007
- Character Set
- utf8