Figure 72. Analog simulations of forcing functions for
Models I and II. Seasonal variation in water surface area
for rainfall year June 1974 May 1975 under five
conditions of drainage and product of solar radiation and
water surface area under five conditions of drainage.

 a) primitive (predrainage) conditions
 b) less drained than present (mean,
 maximum, and minimum 0.25 ft higher
 than present)
 c) present conditions
 d) more drained than present (mean,
 maximum, and minimum 0.75 ft lower
 than present)
 e) maximum drainage (mean, maximum,
 and minimum 1.5 ft lower than present)

NOTE: See Appendix Table B-1 for mean, maximum, and
minimum average of water surface area for each condition.