The fast Fourier analysis program was executed several

 times on the monthly data, using different numbers of data

 points (multiples of 12) in order to assure that any low

 frequency components that might be present would show as

 clearly defined peaks and that non-even number harmonics

 would not be spread out over several adjacent harmonics and

 their importance possibly obscured. Due to limits of the

 computer and the program, data sets greater than 36 yrs

 (432 data points) in length could not be tested. Fourier

 analysis of annual total rainfall at Ft. Myers tested 82,

 81, 80, and 77-yr sequences. The programs were run on an

 IBM 1180 digital computer at the Department of Nuclear

 Engineering at the University of Florida.



 Remote Sensing for Relating Water Area to Volume

 Depth-area (hypsographic), depth-volume, and area-

volume curves of the three-county study region were

developed using remote sensing techniques, plan profiles

from state road and private canal surveys, and on-site

topographic surveys. Lands covered by water several months

annually were located and mea-sured on infrared aerial

photographs by means of soil and vegetation

characteristics. Relative elevations and elevation ranges

of the different vegetation communities were determined

with the plan profiles and the topographic surveys.

 In this study eight wetland areas were defined. These

are marshes through which water flows (sloughs), the