WESTERN RIVERS SYSTEM

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WESTERN RIVERS SYSTEM

• THE BASICS
• 03APR03

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Western River System

• The Mississippi River and its tributaries
• Western Rivers differ from the U.S. Marking
  system as follows
• 1. The conventional direction of buoyage is from
  the mouth to head of navigation. Local
  terminology describes aids as Right or Left
  descending bank
• 2. Aids are not numbered or lettered
• 3. Safe water Isolated danger marks are not used

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Western River System

• Left Descending Bank Marks

• Shape Triangle
• Light Red
• Color Red
• Characteristic Group- flashing Characteristics

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Western River System

• Right Descending Bank Marks

• Shape Square
• Light Green
• Characteristic Flashing Characteristics
• Color Green

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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

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Western River System

• Crossing Marks
• By June 1999 solid-colored boards should be
  changed to Non-lateral Red Green.
• Non-lateral means they dont mark the edges of
  the channel.

Western River System
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Right descending bank
Left descending bank
Upbound Traffic
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