punggol river

thick project pcn flats housing wide active shore habitat nature woods drain water life clean network outskirt open beautiful garden ecosystem surface countryside freshwater connector riverine block concretised reflection bank sky still biome calm apartment trees abc environment brackish mangroves green singapore park sengkang rain channel slanting slope northeast system natural punggol section greenery steep river clouds day cloudy vegetation canalised secondary bto suburbs dense space sungei suburban development rural basin sides drainage programme aquatic rainforest broad modern residential concrete