Author(s): Mariana Marselina; Arwin Sabar
Linked Author(s):
Keywords: Debit; Prediction; Markov model; Cipoletti; Cibulakan spring
Abstract: One of the springs sourced in the north zone of Wayang Mountain is the Cibulakan spring. Cibulakan Spring is located in Cibulakan, Mekarsari Village, Pacet District, East Java, and geographically located in 107°41°24”° East Longitude and 07°05°43” South Latitude with +840 masl height. It can be said that this spring is flowing throughout the year, but it has not been utilized by the community. In order to utilize the Cibulakan Spring for drinking water and industrial need, it is necessary to take the initial step of reliable flow discharge measurement and estimation throughout the year to find the minimum and maximum discharge of Cibulakan Spring. The measurement of Cibulakan Spring discharge was done by sharp threshold measuring instrument, namely Cipoletti measuring instrument. This measurement was conducted by connecting the water level (h) and discharge (Q). According to the measurements using Cipoletti, the maximum discharge from July to August was 168 liters/second. Minimum and maximum flow discharge was performed by observing the rainfall characteristics collected in Paseh Station as the nearest rainfall station to the Cibulakan Spring using the multiclass Markov stochastic method. Based on the multiclass Markov method, it was obtained that the maximum flow discharge at Cibulakan Spring in very wet season is 173 liters/second and the minimum flow discharge in very dry season is 110 liters/second. This determination of flow discharge availability is highly useful for decision makers to improve the utilization of Cibulakan Spring.
Year: 2018