Fly Dane

Fly Dane is a regional partnership that allows local agencies to pool their resources for periodic updates of orthophotography, elevation, and planimetric data.

2000

Deliverables

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1-foot Resolution Imagery:

Orthophotos combine the image characteristics of a photograph with the geometric qualities of a map. The Fly Dane 2000 one-foot resolution digital orthophotos are a mosaicked raster data set derived from black and white aerial photographs. The aerial photography was acquired in the spring of 2000 at a scale of 1:20,000 (1"=1666'). The aerial photographs were used to create 1"=200' scale digital orthophotos at one-foot ground resolution covering all of Dane County, projected to the Dane County Coordinate System, and were divided into 313 four square mile tiles.

Coverage Area:

Dane County

6-inch Resolution Imagery:

Orthophotos combine the image characteristics of a photograph with the geometric qualities of a map. The Fly Dane 2000 six-inch resolution digital orthophotos are a mosaicked raster data set derived from black and white aerial photographs. The aerial photography was acquired in the spring of 2000 at a scale of 1:10,000 (1"=833'). The aerial photographs were used to create 1"=100' scale digital orthophotos at six-inch ground resolution covering the majority of the urbanized areas in Dane County and consists of 318 one square mile tiles.

Coverage Area:

The 6-inch resolution imagery was developed over most of the urbanized areas of the county. The areas colored in green show the coverage of this imagery.

FlyDane

6-inch 2000 Coverage Area

4-foot Contours:

The digital four-foot contours are a vector data set developed from a ten-foot spaced grid, digital elevation model (DEM), with two-foot vertical accuracy. The contour data meets National Map Accuracy standards.

Coverage Area:

Dane County

Terrain Data:

A digital elevation model (DEM) is a representation of a topographic surface. The DEM was developed from mass points and breaklines photogrammetrically collected from 1"=1666' scale aerial photography flown in spring of 2000 as part of the Fly Dane 2000 Project. The DEM is a raster data set in ESRI GRID format with an X, Y, Z value located at the center of each 10ft. by 10ft. cell. The DEM has a ten-foot grid spacing with two-foot vertical accuracy. The DEM supports the development of four-foot contours at National Map Accuracy Standards.

Coverage Area:

Dane County