CREATE TABLE table_26609958_1 (rainfall_totals__million_m_3__ VARCHAR, hydrographic_basin VARCHAR)

When martha brae, river is the hydrographic basin what is the rainfall totals (million m 3)?
SELECT rainfall_totals__million_m_3__ FROM table_26609958_1 WHERE hydrographic_basin = "Martha Brae, River"
SELECT "rainfall_totals__million_m_3__" FROM "table_26609958_1" WHERE "Martha Brae, River" = "hydrographic_basin"