Investigating Tidal Regime of Bahmanshir River

In this study an annual report of water height in Torat-Bakhakh station was investigated. No tidal calculation including identification of tidal constituents and its modeling has been done so far. Therefore, the results of this research along with the methods used can be effective and useful. In this study five tidal constituents of M2, Mf, O1, K1, and K2 were identified. The strongest element in this spot was M2 and it reveals that major changes of tides are related to the moon location. According to the American scale, the f-number is f = 0.36 which indicates a semi-diurnal type of tides, because this quantity is less than 0.5. Hence, the tide of this area represents the powerful influence of the sea.