Mapped Pools include a unique pool ID, geoLocation in decimal latitude and longitude, and a pool statusvalue indicating the pool’s presumed or verified status (Confirmed, Probable, Potential, Duplicate,Eliminated). In addition, Mapped Pools include dates of interaction with the data for each pool, the peopleresponsible for that interaction - observer and VPAtlas user, the town where the pool is located, estimatedlocation uncertainty, and the method used to map the pool (Known, Aerial Photo Interpretation, Field Visit).Information about the landowner may also be included, along with the observer’s comments about thepool’s status and location.

Pool Visit data includes a reference to its VPAtlas Mapped Pool data. Pool Visit data is information used toverify the status of a vernal pool. It includes geoLocation information, landscape, size and depth, water inletand outlet, disturbances, surrounding habitat, hydro-period, and the identification of indicator species.Vernal Pool Visit data may also include photos of the pool and its surroundings and photos of indicatorspecies, as well as links to iNaturalist species observations.VPAtlas Pool Visit data does not itself confirm the presence of a vernal pool. VPAtlas Visits are reviewed byAdministrative staff to determine and assign a status (Confirmed, Probable, Potential, Duplicate,Eliminated).VPAtlas Pool Visit data may also include VPAtlas Review data. VPAtlas Reviews are conducted by VPAtlasadministrators - biologists who determine the status of each Visited pool according to the informationincluded in each Visit. Reviews include the assignment of a pool’s status, provide a coded reason for thatstatus value, may include QA notes, may assign the Visit’s geoLocation to the Mapped Pool’s geoLocation,records the QA person and date, and assigns a unique ID to the Review.