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
Pearl River Delta Production Audit according to Article 28 of China's Cleaner Production Promotion Law. Guangdong Environmental Protection Bureau took a stance against the companies by blacklisting them. Pearl River Delta The Pearl River Delta Metropolitan Region (PRD, ) is the low-lying area surrounding the Pearl River estuary, where the Pearl River flows into the South China Sea. It is one of the most densely urbanized regions in the world, and is often considered an emerging megacity. The region's economy is referred to as Pearl River Delta Economic Zone, while the Chinese government's development plans consider it part of the Guangdong-Hong Kong-Macao Greater