St. Louis, an independent city in the state of Missouri, has a land area of 62 square miles and a water area of 4.1 square miles, bringing the total area of the city to around 66 square miles. It is seated on hills and terraces that are 100 to 200 feet above the level of Mississippi river’s western banks. Majority of St. Louis comprises of rolling prairies, low hills, shallow valleys, and wide flood plains which are formed by both the Mississippi and the Missouri rivers. At the downtown south area, you will find several sinkholes and caves, of which most are sealed. There are also several springs by the riverfront.