||Increasing Water Supplies by Suppression of Reservoir Evaporation.
Cro, Franklin R. ;
||Oklahoma Water Resources Research Inst., Stillwater.
||DI-14-31-0001-3036; OWRR-A-014-OKLA; 04558,; A-014-OKLA(1)
( Reservoirs ;
Evaporation control) ;
Cellular plastics ;
Heat budget ;
Performance evaluation ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
Water supplies in Southwestern reservoirs are seriously affected by evaporation. Chemical evaporation suppressants are only 35% to 40% efficient and are seriously affected by the wind. As an alternative, floating covers of solid or flexible materials offer a practical method of suppressing evaporation on small reservoirs. The study was made on paired experimental ponds to determine the extent to which evaporation losses are reduced by the use of floating solid panels. The principal tests were with floating rafts constructed of 1 inch thick Styrofoam which were found to be highly efficient in suppressing evaporation. Over long periods the Styrofoam had no significant effect on the total thermal energy content of the pond.