Nitrate transport in subsurface tidal swamp land was evaluated using fieldmeasured hydraulic conductivity and numerical modeling. The study was conducted in Mulya Sari, Banyuasin, employing the auger hole method, laboratory analysis, and MODFLOW-MT3DMS simulation. Hydraulic conductivity ranged from 46.44 to 323.87 cm/day (average 185.66 cm/day), indicating high values, while nitrate concentratiā¦