Longitudes are given to the nearest .001. Latitude and longitude values are specified in Decimal Degrees. The horizontal datum used is North American Datum of 1983. The ellipsoid used is GRS1980. The semi-major axis of the ellipsoid used is 6378137.
Most attributes have unique values associated with each feature.
All other attributes have unique values based on the surface water feature and is defined below. Due to the AREV database storing all attributes in character defined fields, all fields within this layer are also in this format. Valid permit number recorded by the SEO for additional type of surface water right being applied in that feature. The certificate record number, applied only to adjudicated rights. Proof number for a certificate record or adjudicated right.