Extent of available data.
The 1991 Statewide Spring orthophotography has a 1 meter resolution. It originated from the United State Geological Survey and is in black and white. Orthophotography is extremely useful for determining land use and land cover. Because of this, it can provide important context for specific locations and other spatial data. If multiple years are available, it can also be used to identify changes that take place on the landscape.