You can upload a point or a polygon. If you upload a point, you must provide the latitude and longitude of the point centroid, and the are in acres of the point. We require you to use the NAD83 projection (SRID of 4326) to define the latitude and longitude of points. Here are some descriptions on projections and SRID codes. If you are providing a polygon definition, it must be defined using the well known text (WKT) definition for a polygon in vector format, also using the NAD83 projection. Polygons are described using WKT definitions as well.