CREATE TABLE table_203_459 (id DECIMAL, "township" TEXT, "fips" DECIMAL, "population\ center" TEXT, "population" DECIMAL, "population\ density\ /km2  ( /sq mi ) " TEXT, "land area\ km2  ( sq mi ) " TEXT, "water area\ km2  ( sq mi ) " TEXT, "water %" TEXT, "geographic coordinates" TEXT)

how many of the townships have their water area as 0 km ?
SELECT COUNT("township") FROM table_203_459 WHERE "water area\nkm2 (sq mi)" = 0
SELECT COUNT("township") FROM "table_203_459" WHERE "water area\nkm2 (sq mi)" = 0