Table 1 Top 20 polluting rivers as predicted by the global river plastic inputs model.

From: River plastic emissions to the world’s oceans

Catchment Country Lower mass input estimate (tyr1) Midpoint mass input estimate (tyr1) Upper mass input estimate (tyr1) Total catchment surface area (km2)21 Yearly average discharge (m3s1)21
Yangtze China 3.10 × 105 3.33 × 105 4.80 × 105 1.91 × 106 1.58 × 104
Ganges India, Bangladesh 1.05 × 105 1.15 × 105 1.72 × 105 1.57 × 106 2.08 × 104
Xi China 6.46 × 104 7.39 × 104 1.14 × 105 3.89 × 105 5.53 × 103
Huangpu China 3.35 × 104 4.08 × 104 6.73 × 104 2.62 × 104 4.04 × 102
Cross Nigeria, Cameroon 3.38 × 104 4.03 × 104 6.5 × 104 2.38 × 103 2.40 × 102
Brantas Indonesia 3.23 × 104 3.89 × 104 6.37 × 104 1.11 × 104 8.18 × 102
Amazon Brazil, Peru, Columbia, Ecuador 3.22 × 104 3.89 × 104 6.38 × 104 5.91 × 106 1.40 × 105
Pasig Philippines 3.21 × 104 3.88 × 104 6.37 × 104 4.07 × 103 2.07 × 102
Irrawaddy Myanmar 2.97 × 104 3.53 × 104 5.69 × 104 3.77 × 105 5.49 × 103
Solo Indonesia 2.65 × 104 3.25 × 104 5.41 × 104 1.58 × 104 7.46 × 102
Mekong Thailand, Cambodia, Laos, China, Myanmar, Vietnam 1.88 × 104 2.28 × 104 3.76 × 104 7.74 × 105 6.01 × 103
Imo Nigeria 1.75 × 104 2.15 × 104 3.61 × 104 7.92 × 103 2.79 × 102
Dong China 1.57 × 104 1.91 × 104 3.17 × 104 3.33 × 104 8.54 × 102
Serayu Indonesia 1.33 × 104 1.71 × 104 2.99 × 104 3.71 × 103 3.70 × 102
Magdalena Colombia 1.29 × 104 1.67 × 104 2.95 × 104 2.61 × 105 5.93 × 103
Tamsui Taiwan 1.16 × 104 1.47 × 104 2.54 × 104 2.68 × 103 1.08 × 102
Zhujiang China 1.09 × 104 1.36 × 104 2.31 × 104 4.01 × 103 1.33 × 102
Hanjiang China 1.03 × 104 1.29 × 104 2.19 × 104 2.95 × 104 7.35 × 102
Progo Indonesia 9.80 × 104 1.28 × 104 2.29 × 104 2.24 × 103 2.79 × 102
Kwa Ibo Nigeria 9.29 × 104 1.19 × 104 2.08 × 104 3.63 × 103 1.92 × 102
  1. Input rate estimates (in t yr−1) are representative of mismanaged plastic waste (MPW) production and catchment runoff. A lower, midpoint and upper estimate is calculated based on three regression analyses accounting for uncertainties in our field observations data set.