Analisis Kavitasi pada Saluran Transisi dan Peluncur Pelimpah Bendungan Kluet – Model Fisik Skala 1:60

River Region of Baru-Kluet has a steep slope contour and high rainfall so that it is vulnerable to flooding while during the dry season rice fields experience drought due lack water. Therefore, dam built mitigate these issues. The spillway flow-control component in which used improve regulation enlarge flow rate will cross building. Spillway hydraulic behavior called cavitation. experiment was carried out at Coast Laboratory Syiah Kuala University, Indonesia. This study aims determine value damage cavitation index interval each series discharge variation. Cavitation analysis method formula ratio between local water pressure velocity. Flow velocity outflow collected from experiment. results 0 modified are located level 1 for transition region, 3 launcher region 2 series. It found change with extending width side channel, lowering elevation displacement sill channel aim reducing still possibility damage, but much safer than High quality materials or concrete not recommended because they expensive economically unfeasible, therefore use slot aeration/aerator suitable option this case. Keyword: Dam, spillway, cavitation, model test.