Inter American Geodetic Survey. North Decimal Degree -16.666667. South Decimal Degree -16.500000. East Decimal Degree -69.000000. West Decimal Degree -69.250000. Alternate title: Desaguadero, Bolivia. Relief shown by 20 m. contour interval and spot heights. Universal transverse Mercator projection. Standard map series designation: Serie H731=[Series] H731. With a key to abbreviations.