Impervious surfaces were captured as part of the Anne Arundel County 2014 Impervious Surface update mapping project done by Axis Geospatial, LLC. This data was collected using stereo imagery and orthoimagery. The imagery used was aquired as part of the Maryland Statewide Orthoimagery project. The 4 band, 6 inch pixel resolution imagery was flown in April 2014 and meets ASPRS Class 1 standards at map scale 1:1200 (1 = 100'). The minimum mapping unit for this layer is 100 square feet."