Srp

TotalP

Reference

World average 100 Amazon System

Solimoes above I^a 200

Negro 42

Jurua 202

Trombetas 52

Amazon at Obidos 140 Orinoco System

Blackwater tributaries 2-80

Clearwater tributaries 68-157 White water tributaries 111-135

Lower Orinoco 80 Other rivers

Yukon 34

Mississippi 1400

Ohio 1240

Loire 2560

Nile 35-823

Changjian 984

Huanghe 1694

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