When cabarita river is the hydrographic basin what is the lowest groundwater discharge (million m 3)?
CREATE TABLE "major_water_basins_of_jamaica" (
  "hydrographic_basin" text,
  "surface_area_km_2" real,
  "rainfall_totals_million_m_3" real,
  "evapotranspiration_million_m_3" real,
  "surface_water_runoff_million_m_3" real,
  "groundwater_discharge_million_m_3" real
);
SELECT MIN("groundwater_discharge_million_m_3") FROM "major_water_basins_of_jamaica" WHERE "hydrographic_basin"='Cabarita River';