Evaluasi Pembagian Air Pada Saluran Sekunder Di Daerah Irigasi Wadaslintang Barat Kabupaten Kebumen Provinsi Jawa Tengah

Abstract

Wadaslintang Irrigation Area (D.I) which utilizes the Wadaslintang Multipurpose Dam with a capacity of 408 million m³. This research is motivated by the availability of weir discharge for irrigation water needs, so it is necessary to regulate the delivery system and regulate water optimally. This study takes the location of the West Wadaslintang Irrigation Area which covers the area of ??Kebumen Regency. The Pejengkolan Dam is a building to regulate the distribution of water for the Wadaslintang Irrigation Area which is located in Pejengkolan Village, Padureso District, Kebumen Regency, Central Java. The problem to be discussed in this research and evaluation is how to find out the amount of relevant water demand for irrigation areas throughout the West Wadaslintang Irrigation Area using manual calculations (kp-01). The results of the recapitulation of water supply data for the Wadaslintang Reservoir for the semi-monthly period, the smallest discharge that occurs from August 1 to September 30 2021 is the drying period of the entire Wadaslintang irrigation network system (routine maintenance of sarpras or annual irrigation networks). , termination of the pest cycle). Meanwhile, during the first planting period of 2021, the amount of 80% reliable discharge that occurred was quite varied, where the largest discharge occurred during the second planting period of 2021 in April for the second period of 10,391 m3/s for the West Wadaslintang Main Canal. , 8,276 m3/s for the East Wadaslintang Main Canal, and 5,348 m3/s for the Bedegolan Irrigation Area.

Keywords: Irrigation, Discharge, Dimensions, Channels.