Analisis Kebutuhan Debit Unggulan Bendung Nambo terhadap Irigasi Pesawahan Desa Banjarharjo dan Desa Parereja

Abstract

Banjarharjo District has a large rice field irrigation area because the majority of the population works as farmers, the land area is ±921.34 Ha for Banjarharjo Village and Parereja Village. The irrigated area of the rice field includes rice fields and rice fields. In its management, the rice and palawija land requires irrigation water supply from the Nambo Dam irrigation canal as a water distribution site available in Banjarharjo District. The author will analyze the discharge in the Nambo Dam in an effort to meet the needs of the sectors that will be fed by the dam, namely rice paddies that require water supply with the calculation of the moisture content required by plant needs. With the conduct of this research, it will be known the need for water for irrigation of rice fields in Banjarharjo Village and Parereja Village which are drained by the Nambo Dam and the availability of superior discharge at the Nambo Dam. The results of the study show that the average rainfall is the most in February and the least in August, and with the discharge of the Nambo Dam in August is very small, it is recommended for the Planting Pattern Schedule which is carried out for a period of 4 months, namely in December-March rice plants (MT 1) because in those months the amount of water is considerable, and in April-July the 2nd Rice Planting (MT 2) was carried out because in that month everything was always available superior discharge at the Nambo Dam which indicated that there was enough water for rice processing which required quite a lot of water treatment, while in August-November (MT 3) Palawija was planted, because the calculation results stated that in those months there was little rainfall and the superior discharge of the Nambo Dam was also small, It is the preferred option for planting palawija because it does not require too much water in its processing.