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GIS staff finish drainage-district calculations, propose combined corporate-boundary layer for maps
Summary
GIS staff told the Taxes, Election & GIS Committee on Sept. 16 that drainage-district calculations used for farmland assessment are complete and that the office is working to transfer the data into the assessor system (PAMs).
GIS staff told the Taxes, Election & GIS Committee on Sept. 16 that drainage-district calculations used for farmland assessment are complete and that the office is working to transfer the data into the assessor system (PAMs). Staff also recommended combining two existing municipal boundary layers to improve county maps without undertaking immediate parcel-level annexation research.
GIS Specialist Colin reported the drainage-district work was done for farmland assessment purposes, noting that parcels in drainage districts can receive assessment adjustments; the completed calculations will be brought into the assessor software so assessors and drainage districts can access maps and data. “We finished the drainage calculations. And then right now, we're working on talking to Pam's about getting that data put into their system,” Colin said.
On municipal boundaries and the county clerk's mapping work, Colin said two imperfect data sources exist and proposed merging them to produce a better working layer for the clerk and for printed maps. He said parcel-level legal research (annexation documents, recorded ordinances) would be a separate, time-consuming research project appropriate as a future improvement rather than part of the immediate layer clean-up.
Other work discussed included Windows-10-era computer replacements for offices that use GIS, a planned ArcGIS Pro conversion for parcel maintenance (with a planned downtime window in the assessor's office), and exploratory use of new functionality that attempts to extract legal descriptions from recorded documents using OCR to support indexing and mapping.
Committee members asked practical questions about how drainage-district maps would be produced and who would use them; GIS staff said the immediate users include farmland assessors and drainage-district officials and that future map products could be produced on request. Colin said the ArcGIS Pro project may offer ancillary benefits such as automated deed-parsing in some future workflows, but he cautioned the new functionality is unproven and would not solve all indexing or title issues.
Next steps: GIS staff will continue ArcGIS Pro planning and will deliver a revised corporate-boundary layer and drainage-district data import status at the next committee meeting.
