River delta slope offshore, waves will make river deltas smoother. Waves can also be responsible for carrying sediments away from the river delta, causing the delta to retreat. For deltas that form further upriver in an estuary, there are complex yet quantifiable linkages between winds, tides, river discharge, and delta water levels. Erosion is also an important control in tide-dominated deltas, such as the Ganges Delta, which may be mainly submarine, with prominent sandbars and ridges. This tends to produce a "dendritic" structure. Tidal deltas behave differently from a river- and wave-dominated deltas, which tend to have a few main distributaries. Once
Mobile–Tensaw River Delta The Bartram Canoe Trail provides a system of waterways by which boaters may explore the delta. The area is known for its excellent bird watching. Hunting is also a common pastime. Most of the Delta is very shallow water. To access these areas airboats, canoes, kayaks, or other small craft are typically used. Delta Safaris at 5 Rivers and Delta Guides and Outfitters are two companies who offer both eco and hunting/fishing excursions in and around the delta. Mobile–Tensaw River Delta The Mobile–Tensaw River Delta is the largest river delta and wetland in Alabama. It encompasses approximately in a area