idk so here's a Wikipedia page:
The Huangpu, formerly romanized as Whangpoo, is a 113 km-long (70 mi) river flowing north through Shanghai. The Bund and Lujiazui are located along the Huangpu River.
Satellite image of the Huangpu River near its confluence with Suzhou Creek on the west bank (left) and the Lujiazui area (right) on the east bank
The Huangpu is the biggest river in central Shanghai, with the Suzhou Creek being its major tributary. It is on average 400 m (1,312 ft) wide and 9 m (30 ft) deep, and divides the city into two regions: Puxi ("west of Huangpu"), the traditional city center, and Pudong ("east of Huangpu").
Bridges
Fengpu Bridge
Lupu Bridge, opened 2003.
Minpu Bridge
Minpu Bridge No. 2
The lower deck of this bridge carries Line 5 across the Huangpu River. This is the first line of the Shanghai Metro to cross the river via a bridge.[4]
Minpu Bridge No. 3
Nanpu Bridge, opened 1991.
Songpu Bridge, opened 1975 railway, 1976 highway.
Songpu Bridge No. 2
Songpu Bridge No. 3
Xupu Bridge, opened 1997.
Yangpu Bridge, opened 1993.
The following roadways, highways, and railways also cross the Huangpu River via a bridge:
G1503 Shanghai Ring Expressway
G50 Shanghai–Chongqing Expressway
G60 Shanghai–Kunming Expressway
Zhufeng Highway
Huqingping Highway
Shanghai–Hangzhou railway
Tunnels
A number of lines of the Shanghai Metro cross underneath the river. From north to south geographically, these are Line 10, Line 12, Line 18, Line 4 (first crossing), Line 2, Line 14, Line 9, Line 4 (second crossing), Line 8, Line 13, Line 7, Line 11, and Line 5.
There are several roadways which cross the Huangpu river via a tunnel, including:
Changjiang Road tunnel
Dalian Road tunnel
Dapu Road tunnel
East Fuxing Road tunnel
East Yan'an Road tunnel
Jiangpu Road tunnel
Jiaohuan tunnel (Suburb Ring Expressway tunnel)
Jungong Road tunnel
Longyao Road tunnel
Renmin Road tunnel
Shangzhong Road tunnel
South Hongmei Road tunnel
South Xizang Road tunnel
Waihuan tunnel (Outer Ring Expressway tunnel)
Xiangyin Road tunnel
Xinjian Road tunnel
Yindu Road tunnel
Zhoujiazui Road tunnel
Additionally, the Bund Sightseeing Tunnel is a tourist attraction (not a roadway) that also crosses the Huangpu river.
Ferries
Tour boat on the river at Pudong
There are currently several ferry lines operated by Shanghai Ferry. Numerous tour boats also ply the harbour in the Pudong area.
Controversy
Further information: 2013 Huangpu River dead pigs incident
In March 2013, some 16,000 pig carcasses were found floating in the Huangpu River in Shanghai. Some of the pigs carried ear tags saying they were from Jiaxing, so that city in Zhejiang may be the source; one news agency indicates that dead pigs are often dumped into rivers in China to avoid the disposal cost. However, local farmers deny the dumping allegation.