Factor Analysis of Physics Chemistry Waters that Affects Damage Safety Cliff on the Outskirts of River Siak

摘要: This research to identify the physics chemistry vegetation of water on outskirts Siak in terms quality siak river good chemically, and biology erosion a cliff use safety still original condition. is descriptive condition coasts river. Data needed results measurement both physics, chemical biological oxygen dissolved, CO2 free, pH water, speed current river, sample for measurements total suspended solid temperature BOD5. Of precipitation data required count intensity rain approximate discharge flood that occurs , conditions river.Then analyzed order so as produce can factors waters affects herbs The result identified plants damage retaining wall land ( case study kecamatan tualang district there are fatty oil luminance an observation station she sulphate high category ranged 239,50-341,87 mg/L . Followed by womb klhorida 14,0-24,4 phospat 5,31-5,83 mg/L. Organic substances contained these make acceleration with increase number this was every With values within range 6,1-6,8 addition copper lead made dominated areas family lythraceae combretaceae average type mangrove need high. In causing destroyed aerial roots spread.