YESTERDAY’S (8-18-08) ET RECORDED AT THE BEAR MOUNTAIN
GOLF COURSE CIMIS STATION WAS: 0.21”
WHAT IS ET?
ET stands for "evapotranspiration" and is a combination of evaporation from soil and exposed surfaces and transpiration, which is the normal release of moisture during everyday metabolism of plants. The following is a summary of the amount of over-watering associated with typical run-times compared to ET run-times estimated for turf using weather variables collected at DWP's weather station during the spring, summer, and fall of 2003.
ET controllers are designed to water efficiently by providing plants with only the water lost during the previous day's evapotranspiration, which is estimated by the previous day's weather or by seasonal averages (different ET controller systems use slightly different estimates of ET). Thus, substantial water savings are possible using ET irrigation systems and the DWP will be promoting their use. The table below contains an estimate of the previous day's ET along with weather variables used to predict ET, collected at the DWP office. If you would like more information about ET or any of the DWP's water conservation programs, please contact us at (909) 866-5050. |