Each layer is evaluated to identify which areas are "inherently suitable" for development and which must be conserved for ecological health or to avoid natural hazards like flooding .
Every piece of land has a "highest and best use" based on its biology and geology. The Map Overlay Method proyectar con la naturaleza ian mcharg pdf
For those interested in learning more, you can download a PDF version of Ian McHarg's book "Designing with Nature" here: [insert link] Each layer is evaluated to identify which areas