AGSL GeoDiscovery

Columbia County - Basemap Orthophoto 2020

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 6 inch pixel orthophotography for use as a basemap.Ayres Associates provided Columbia County, Wisconsin with digital, 4-band orthoimagery services in 2020 as part of WROC. The aerial imagery was collected on April 4th using a Leica Geosystems DMCIII sensor mounted in a fixed-wing aircraft. Aerial imagery was collected to support 0.5 foot ground sample distance (GSD) orthoimagery to meet ASPRS Class II horizontal accuracy specifications at 1" = 100' map scale. The 6-inch pixel orthoimagery was produced to meet or exceed a horizontal accuracy of 1.4 feet RMSE according to ASPRS Positional Accuracy Standards for Digital Geospatial Data. Resultant orthoimagery was rectified to a DEM created from newly aquired LiDAR collected in 2020.

Resource Link:

https://opendata-cclid.opendata.arcgis.com/maps/cclid::basemap-orthophoto-2020

Identifier:

https://www.arcgis.com/home/item.html?id=29e30382eb924e1693457144d069b52a

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 2024

Date Issued:

2024-12-17

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