Laserfiche WebLink
<br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />(,&.) <br />co <br />co <br />""i <br /> <br />marginal ~ benefits (MNB). The function MNB is negatively sloped <br /> <br />because of the conventional principle of diminishing marginal returns <br /> <br />to increasing quantities of water, assuming adequate water supplies and <br /> <br />optimal deliveries over the irrigation season. The relationship is pre- <br /> <br />sented as linear, but tqe logic of the analysis holds regardless of an <br /> <br />exact shape of the function so long as it has negative slope. <br /> <br />MED (Figure VI-i) represents a schedule of marginal external <br /> <br />damages inflicted on down stream users by diversions of increasing <br /> <br />quantities of water upstream. These damages are the external effects <br /> <br />which interest us. <br /> <br />'" <br />" <br />~ <br />~ <br />o <br />o <br /> <br /> <br />B <br /> <br />Ae A' <br />Amount of Water Used for Irrigation per Acre <br /> <br />Figure IV-l. MARGINAL DAMAGES AND BENEFITS OF <br />UTILIZING IRRIGATION WATER <br /> <br />5 <br /> <br />,~ ,. <br />