Kedunglimus Irrigation Area is located in Dusun Satu, village Dukuh Waluh, District Kembaran, District Banyumas, to fulfill the needs of agricultural water area of Merci village, Arca, and Pliken. Kedung Limus Irrigation Area is an irrigation technique that takes water from the Pelus River. The purpose of this research is to analyse the initial determination of planting efficiencies based on effective discharge and rainfall. This research is conducted by collecting data from public Works Office and water resource Management Hall of Serayu Citanduy Purwokerto. The data includes map DAS Pelus, 10-year rainfall data, Pelus River debit data, secondary coated water delivery data, planting pattern data and crop types. Based on the results of the research, obtained by the efficiency analysis of the delivery of the secondary channel Balekambang with an average of 147%, the largest value of 100% and the lowest value of 476% while the results of effective rainfall analysis obtained average of 0.38 mm/day, the highest value of 0.95 mm/day and the lowest value of 0.00 mm/day. By looking at the value of efficiency of the delivery that approaches the maximum value and magnitude of rainfall and pay attention to the beginning of the rainy season, it is proposed the initial determination of planting efficiency based on effective discharge and rain in January 1st period with efficiency of 103% and effective rainfall of 0.95 mm/day with Padi-Palawija-Padi Planting pattern