view landscape cityscape of wat uposatharam or bot temple at riverside with eichhornia crassipes or common water hyacinth in sakae

architecture attraction canal city commercial common contaminated contamination corrosion crassipes damage dangerous dirty disaster disposal ecology eichhornia environment environmental garbage global green hyacinth junk krang lake natural nature outdoor plant polluted pollution pond pontederia poor poverty problem recycle river rubbish sakae sewage substance thailand thani trash treatment tree urban uthai waste water