This　paper　focuses　on　an　experimental　study　of　hydraulic　performances　of　a　new　type　dissipator,　which　combines　the　advantage　of　diffused　bucket,　contracted　bucket　and　hybrid　type　bucket.　Experiments　were　conducted　on　1:60　scale　laboratory　models　of　four　bucket　types,　continuous　flip　bucket,　contracted　bucket,　hybrid　type　bucket　and　combined　bucket.　The　flow　regime,　jet　trajectory　and　pressure　distribution　on　the　bottom　and　side　face　of　the　buckets　were　studied.　The　results　of　combined　bucket　indicate　that　as　a　result　of　its　lower　bucket　contraction,　its　side　face　pressure　is　positive　and　flow　cavitation　can　be　avoided.　An　important　observation　on　this　bucket　is　that　in　the　Froude　number　range　from　5.27　to　6.0　its　scour　depth　decreases　with　Froude　number,　with　a　depth　reduction　of　roughly　20%　compared　with　that　of　contracted　flip　bucket.　©　Copyright.