ANALISIS NERACA AIR SEBAGAI UPAYA PENINGKATAN PEMANFAATAN AIR DI DAERAH ALIRAN SUNGAI MARTAPURA, PROVINSI KALIMANTAN SELATAN

The water balance in Martapura watershed is calculated to maximise utilization. Watershed located Banjar Regency and Banjarmasin City. utilization of River are for 6 irrigation area, ​​641 Ha fish ponds 25 Swamp Irrigation Areas, 7 intake raw water, 8 intakes industry river maintenance using Q95%.Rainfall runoff calculation the FJ Mock method. divided into 10 sub-watersheds (sub-watershed A sub-watershed J). Sub-watershed Riam Kanan Dam, so it uses outflow reservoir as inflow discharge. average discharge 39,52 m3/s, except period from November I December II. Reliable availability other flow duration curve method, wet year (Q20%), normal (Q50%) dry (Q80%). Calculation 2 type demand, current demand potential increasing demand. There 3 that used this calculation, discharge, year. each followed with total watershed. results one still surplus, but result show there a deficit B – II, due small Reservoir. In years, industrial cannot be increased, can increased second planting season, covering an area ​​2.065 ha DI 5.416 DIR. year, shows - by 1,11 m3/sec increase season I, 328 2.912 ​​while swamp ​​648 were experienced For 2,76 3.862 648