AGSL GeoDiscovery
WROC Imagery DOQQ Tile Index, Wisconsin 2023-2025
- Description:
-
Resource provided by UW-Madison Robinson Map Library.
This polygon data layer represents the digital orthophoto quarter quadrangle (DOQQ) tile index for the 2023-2025 statewide Wisconsin Regional Orthophoto Consortium (WROC) digital orthophotos. The tile index is designed to help locate appropriate images covering a specific area of interest. Staff from the Robinson Map Library (RML) and Wisconsin State Cartographer's Office (SCO) at the University of Wisconsin-Madison created this index based on information supplied by Ayres Associates, the contractor selected by WROC for the 2023-2025 project. WROC flights were conducted during leaf-off conditions in the springs of 2023, 2024, and 2025. As a result, some DOQQ images will reflect ground conditions that span up to three years. To help users identify the time period covered in each DOQQ, UW staff supplemented the original Ayres Associates tile index by intersecting DOQQ polygons with flight date polygons provided by Ayres. Each DOQQ record in the index identifies the earliest known acquisition date in the field 'date_start', and the latest known acquisition date in the field 'date_end.' In situations where the acquisition spans more than a single date, filenames include the start and end dates in the format YYYY-MM-DD (e.g., Marathon_WI_WROC_Abbotsford_NE_20230412_20250504.tif). When the entire footprint of the DOQQ was flown on a single date, only one date is included in the filename. (e.g., Oconto_WI_WROC_Abrams_SE_20250426.tif).In addition, the DOQQ index created by UW contains online linkages to GeoTIFF and JPEG images held in the WisconsinView Data Archive at UW-Madison. For convenience, tiff_path and jpeg_path can be used (and modified as needed) to reference the imagery when it is copied to a local filesystem (e.g., M: staging WROC WROC_2025 Marathon_WI_WROC_Abbotsford_NE_20230412_20250504.tif)
- Resource Link:
- https://www.ncwrpc.org/wisconsin-regional-orthoimagery-consortium-wroc/
- Identifier:
- F632BB22-E950-407B-AAD3-0CF77BFB1432
- Language:
- English
- Creator:
- Wisconsin State Cartographer's Office
- Publisher:
- Wisconsin State Cartographer's Office
- Provider:
- University of Wisconsin-Madison
- Resource Class:
- Datasets
- Subject:
- Imagery and Base Maps
- Temporal Coverage:
- 2023-2025
- Date Issued:
- Spatial Coverage:
- Wisconsin
- Access Rights:
- Public
- Format:
- Shapefile