what is the deepest point in the mississippi river
Algiers Point Just off this point is where the Mississippi River is at its deepest, approximately 60 meters (200 ft) deep.[4] This depth varies from year to year as the river alternately scours and deposits silt. A U.S. Coast Guard aid to navigation, Algiers Point Light "95," marks the point.[5] Its geographic coordinates are 29°57′19″N 90°03′19″W﻿ / ﻿29.95528°N 90.05528°W﻿ / 29.95528; -90.05528
Mississippi River The Mississippi River empties into the Gulf of Mexico about 100 miles (160 km) downstream from New Orleans. Measurements of the length of the Mississippi from Lake Itasca to the Gulf of Mexico vary somewhat, but the United States Geological Survey's number is 2,320 miles (3,730 km). The retention time from Lake Itasca to the Gulf is typically about 90 days.[33]