FIGURE 1.-Upper Chesapeake Bay, approximately 1:990,000 scale. This NASA Landsat scene is a color composite of three simultaneously recorded spectral bands; color response is similar to that of color infrared film. Black-and-white copies of Landsat scenes are available for the entire coastal zone, and color composites are available for selected

areas.

FIGURE 2.-Aerial photograph, approximately 1:21,000 scale, of part of the coast of North Carolina. A typical black-and

white large-scale mapping photograph, taken at a flight height of 1,830 m with a Wild RC 9 camera, 88-mm super-wideangle lens. Specifications and equipment for photography vary with the project area and conditions.

FIGURE 3.-Devlin, Minn.-Ont., 1:24,000-scale orthophotomap/line map, showing the standard line map (Canadian portion) and the orthophotomap (U.S. portion) on a single sheet. The orthophotomap/line map combination is not standard.

FIGURE 4.-Upper Matecumbe Key, Fla., 1:24,000-scale orthophotomap. This type of map is available for selected coastal areas. It shows excellent underwater detail in areas like the Florida Keys.

FIGURE 5.--Sterling, Va.-Md., 1:24,000-scale orthophotoquad, showing the same area as appendix figure 6; it is a photographic base with limited cartographic enhancement.