La. Admin. Code tit. 43 § XXVII-703

Current through Register Vol. 50, No. 12, December 20, 2024

Section XXVII-703 - Conditions during Photography

A. Vertical aerial photography will be accomplished during the period when deciduous trees are as barren as local climatic conditions permit and when the sun angle is not less than 30 degrees above the horizon. Photography will not be undertaken when the ground is obscured by snow, haze, fog or dust; when streams and rivers are not within their normal banks; or when the clouds or cloud shadows will appear on more than 5 percent of the areas in any one photograph. The photographs shall not contain objectional shadows caused by low solar altitude.

B. Photogrammetric targets shall be installed to mark ground control points for subsequent aerial triangulation and control of base map compilation. Care shall be taken to coordinate photographic flight schedules and ground target maintenance to ensure that a minimum of 95 percent of all targets set show up on the aerial photography.

La. Admin. Code tit. 43, § XXVII-703

Promulgated by the Office of the Governor, Division of Administration, State Land Office, LR 17:968 (October 1991).

AUTHORITY NOTE: Promulgated in accordance with R.S. 50:171.