CREATE TABLE table_1911 ("Township" TEXT, "County" TEXT, "Pop.  ( 2010 ) " FLOAT, "Land  (  sqmi  ) " TEXT, "Water  ( sqmi ) " TEXT, "Latitude" TEXT, "Longitude" TEXT, "GEO ID" FLOAT, "ANSI code" FLOAT)

how many townships where pop (2010) and ater is 0.818
SELECT COUNT("Pop. (2010)") FROM table_1911 WHERE "Water (sqmi)" = '0.818'
SELECT COUNT("Pop. (2010)") FROM "table_1911" WHERE "Water (sqmi)" = '0.818'