Abstarct: In this study as a case study to check the status of renewable water circulation in the Gulf has been Chabahar And using software MIKE 21 numerical methods and renewable Bay pollution concentration changes under different scenarios and the impact of the phenomenon of wave, wind and tidal currents have been investigated. The analysis carried out, the results indicate that using RAM coefficient of dispersion 5 (m2/s) and is used in numerical modeling of the relationship between RAM and renewable period of time reproducibility numerical models are very close together and this shows that the relationship is a lot like RAM in Chabahar Bay to Bay Doha, logical and gives the right answer. Results from renewable estimated time all months of the year, indicating that the direction of the current flowing into the sea from the south-east of the mouth of the Gulf is the lowest since the reproducibility of the months of April, July, October and March, and After 6 days under the influence of wave, wind and tidal bay water is renewed. While in the months of November, December and January of transmission of infection can be done slowly so the renewable reaches 19 days. Summer monsoon is the most time-renewable in 19 days and the longest winter monsoon renewable nine days. Examining the phenomenon of each wave, wind and tidal tide has been observed that the phenomenon of Chabahar Bay is renewable controller process while a negligible impact on the wave phenomenon is renewable Chabahar Bay. and the maximum amount of pollution in the Gulf state of exits.