Raintrap Performance on the Fishlake National Forest

Abstract

Fifteen raintraps on the Fishlake National Forest in central Utah were observed over an 11-year period in an effort to evaluate field operation, maintenance requirements, and serviceability of raintrap systems. The raintraps generally functioned properly during the first 7 to 8 years. Some problems occurred during the latter part of the period. Five problem types were classified: (1) material failure-oxidation, ozone attack, and tearing; (2) mechanical damage-vermin attack and puncture by plants and animals; (3) snow accumulation which prevented water storage; (4) insufficient maintenance to catchment aprons, storage bags and ponds, watering troughs, and fences; and (5) improper design resulting from inaccurate estimate of or change in water requirements, poor site selection, and inadequate evaporation and precipitation data. Operational problems associated with the storage part of the raintrap system were more serious than those related to the catchment apron.