AGSL GeoDiscovery

Columbia County - Basemap Orthophoto 2025

Description:

This dataset was automatically cataloged from the creator's Open Data Portal. In some cases, publication year and bounding coordinates shown here may be incorrect. Additional download formats may be available on the author's website. Please check the Resource Link for additional information.

Columbia County 3 inch pixel orthophotography for use as a basemap.Ayres Associates provided Columbia County, Wisconsin, with digital, 4-band orthoimagery services in 2025 as part of WROC. The aerial imagery was collected on March 11th, 12th, and April 6th using a Leica Geosystems DMC III 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 lidar previously collected in 2020.

Resource Link:

https://opendata-cclid.opendata.arcgis.com/maps/cclid::basemap-orthophoto-2025

Identifier:

https://www.arcgis.com/home/item.html?id=17872445ced74a31ba80f6f0a71d6f74

Language:

English

Creator:

Columbia County Land Information Department

Publisher:

Columbia County Land Information Department

Provider:

American Geographical Society Library – UWM Libraries

Resource Class:

Datasets and Imagery

Resource Type:

Aerial photographs

Temporal Coverage:

Issued 2025

Date Issued:

2025-08-29

Spatial Coverage:

Columbia County, Wisconsin, and United States

Rights:

Although this data is being distributed by the American Geographical Society Library at the University of Wisconsin-Milwaukee Libraries, 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.

Access Rights:

Public