Tidal Effect on Coastal Municipal Drainage System: Case Study of Bandar Maharani, Muar

Flash flood atBandar Maharani, Muaris a common occurrence. Although,numerous studies and continual improvement todrainagesystems havebeencarriedout, flash Maharani still persists. Aim ofthisstudyis toassess tidaleffect oneffectiveness of Bandar drainage system.80% the 12.25 km area consists residentialsand commercial buildings.Capacity ofdrainage systemalong 15 major roads in has been evaluated.Peak flows due to 5, 10, 50 100-year ARI rainfall were considered. Hightide which occurred 1999 used investigate effect tideson capacity drainalongJalan Bakri.Ithas shown that high tidehasreducedas much as32% drains alongJalanBakri, system ofBandar Maharani.The effectof tides can reach as far 3.687 upstream. This means whenhigh heavy rainoccurconcurrently, alongJalanBakriwill be affected, thus leadto floods.