CREATE TABLE table_30694 ("Reservoir" CLOB, "Basin" CLOB, "Location" CLOB, "Type" CLOB, "Height  ( m ) " CLOB, "Length along the top  ( m ) " CLOB, "Drainage basin  ( km\\u00b2 ) " CLOB, "Reservoir surface  ( ha ) " CLOB, "Volume  ( hm\\u00b3 ) " CLOB)

What is listed in drainage basin when the type is gravity and the reservoir surface is 34.36?
SELECT "Drainage basin (km\u00b2)" FROM table_30694 WHERE "Type" = 'Gravity' AND "Reservoir surface (ha)" = '34.36'
SELECT "Drainage basin (km\u00b2)" FROM "table_30694" WHERE "Reservoir surface (ha)" = '34.36' AND "Type" = 'Gravity'