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WESTERN RIVERS SYSTEM

WESTERN RIVERS SYSTEM. THE BASICS 03APR03. Western River System. The Mississippi River and it’s tributaries Western Rivers differ from the U.S. Marking system as follows :

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WESTERN RIVERS SYSTEM

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  1. WESTERN RIVERS SYSTEM THE BASICS 03APR03

  2. Western River System • The Mississippi River and it’s tributaries • Western Rivers differ from the U.S. Marking system as follows: 1. The conventional direction of buoyage is from themouthto head of navigation. Local terminology describes aids as Right or Leftdescending bank • 2. Aids are notnumberedorlettered • 3. Safe water & Isolated danger marksare not used 2

  3. Western River System • Left Descending Bank Marks: • Shape: Triangle • Light: Red • Color: Red • Characteristic:Group- flashing Characteristics 3

  4. Western River System • Right Descending Bank Marks: • Shape: Square • Light: Green • Characteristic:Flashing Characteristics • Color: Green 4

  5. Western River System • Crossing Marks: • Color: Red or Green • Shape: Diamond • Light: White(Changed to Red or Green when damaged or worn) • Characteristic: • Right descending bank - single flash - Green or White • Left descending bank - group flashing two - Red or White 5

  6. Western River System • Crossing Marks: • By June 1999 solid-colored boards should be changed to Non-lateral Red & Green. • Non-lateral means they don’t mark the edges of the channel. Western River System 6

  7. Right descending bank Left descending bank Upbound Traffic 7

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