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Table 1
Details of sampling sites located along the main stem of the Pearl River.
| Sites | Name | Coordinates | Salinity (‰) | River Width (m) | Information of dams (MW) |
|---|---|---|---|---|---|
| S1 | Zhuhai | 113°52′12″E, 22°03′24″N | Brackish water (4.62) | – | – |
| S2 | Zhongshan | 113°38′07″E, 22°52′17″N | Brackish water (3.50) | 938 | – |
| S3 | Xiaotang | 112°49′25″E, 23°5′2″N | Freshwater (1.20) | 926 | – |
| S4 | Zhaoqing | 112°25′12″E, 23°3′15″N | Freshwater (0.17) | 762 | – |
| S5 | Deqing | 111°48′9″E, 23°8′18″N | Freshwater (0.08) | 826 | – |
| S6 | Fengkai | 111°30′17″E, 23°23′47″N | Freshwater (0.08) | 845 | Longwanba (159) |
| S7 | Wuzhou | 111°12′37″E, 23°25′53″N | Freshwater (0.05) | 856 | Changzhouba (630) |
| S8 | Tengxian | 110°53′55″E, 23°23′5″N | Freshwater (0.05) | 662 | Changzhouba (630) |
| S9 | Mengjiang | 110°45′42″E, 23°29′28″N | Freshwater (0.04) | 520 | – |
| S10 | Guiping | 110°4′27″E, 23°25′38″N | Freshwater (0.06) | 460 | Datengxia (1600) |
| S11 | Wuxuan | 109°40′10″E, 23°41′16″N | Freshwater (0.07) | 501 | – |
| S12 | Shilong | 109°42′03″E, 24°33′12″N | Freshwater (0.08) | 346 | Qiaogong (456) |
| S13 | Heshan | 108°52′1″E, 23°49′28″N | Freshwater (0.01) | 220 | Letan Dam (600 MW) |
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