Mafi girma raguwar a tashar budewar ta bude ultrasonic fure, mafi girman matakin ruwa a cikin ramin sarkin; Karamin karancin kwarara, kasan matakin ruwa. A cikin tashoshin gaba ɗaya, babu tabbataccen aiki tsakanin matakin ruwa da ragi mai gudana. Saboda zurfin ruwa iri ɗaya, girman adadin kwararar ruwa ma yana da alaƙa da yankin giciye-sashi, gangara, da ƙarfin tashar.
Lokacin shigar da seir seir a tashar, tun daga gajin Weir ko shrinkage na slot ya karu da yankin da ke cikin tashar da ke gudana a cikin matakin ruwa da kuma kwararar ruwa a cikin tashar ta shiga a kan geometric girma na ramin seir.