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Lake County staff demonstrates GIS-driven scorecard to prioritize conservation parcels
Summary
Staff showed how county GIS layers and a 48-point scorecard generate desktop scores that prompt site visits; staff emphasized that the 28-point GIS portion must be ground-truthed and that scores can change after field evaluation.
Lake County public land staff demonstrated the county’s GIS-driven approach to evaluating potential conservation parcels, showing how a 28-point desktop GIS score integrates into a 48-point overall scorecard used to prioritize site visits.
Elena, a GIS analyst, walked the committee through an example (Twin Lakes) and explained how layers — water bodies, floodplain, aquifer recharge, strategic habitat and future land use — are scored. “So it scored a 10 out of 28,” she said to illustrate how the GIS portion contributes to the overall ranking. Staff repeatedly emphasized that the desktop score is a starting point and that boots-on-the-ground site visits can raise or lower the final score.
Committee members raised questions about data currency, the source of aquifer layers and whether the model incorporates the latest state datasets. Wendy Pogue said staff used Florida Forever and other accepted state layers as primary inputs but cautioned that maps must be ground-truthed: "Those lines in the sand that are drawn on a map are not necessarily ground truth," she told the committee.
Staff also explained procedural thresholds: parcels receiving sufficient desktop scores were prioritized for site visits, and those site visits feed the final scoring to guide subsequent recommendations to the Board of County Commissioners.
