where does the merrimack river start in missouri
Meramec River The Meramec River (/ˈmɛrɪmæk/) is one of the longest free-flowing waterways in Missouri, draining 3,980 square miles (10,300 km2)[1] while wandering 218 miles (351 km)[2] from headwaters near Salem to where it empties into the Mississippi River near St. Louis at Arnold and Oakville. The Meramec watershed covers six Missouri Ozark Highland counties—Dent, Phelps, Crawford, Franklin, Jefferson, and St. Louis—and portions of eight others—Maries, Gasconade, Iron, Washington, Reynolds, St. Francois, Ste. Genevieve, and Texas. Between its source and its mouth, it falls 1,025 feet (312 m). Year-round navigability begins above Maramec Spring, just south of St. James. The Meramec's size increases at the confluence of the Dry Fork, and its navigability continues until the river enters the Mississippi at Arnold, Missouri.
Climate of Missouri Missouri generally has a variety of seasonal humid subtropical climate (Köppen climate classification Cfa), with cool winters and long, hot summers. In the southern part of the state, particularly in the Bootheel, the climate borders on a more mild-type humid subtropical climate (Köppen Cfa), and in the northern third, the state transitions into a humid continental climate (Köppen Dfa). Because of its location in the interior United States, Missouri often experiences extremes in temperatures. Lacking either large mountains or oceans nearby to moderate its temperature, its climate is alternately influenced by air from the cold Arctic and the hot and humid Gulf of Mexico. St. Louis is surrounded by 2 rivers. The mississippi river and the Missouri river. With these 2 rivers surrounding St. Louis it can cause changes in the weather pattern.