As you approach Old River Control Structure...

Question 1 / 2707066636eea28f7522a1c51aeb2

Question 1 of 2707066636eea28f7522a1c51aeb2

As you approach Old River Control Structure Light you see a flashing amber light. Which action should you take?

Question 1 of 27070

As you approach Old River Control Structure Light you see a flashing amber light. Which action should you take?

🔍 Key Concepts

• Western Rivers aids to navigation and what an amber (yellow) light indicates • Meaning of Old River Control Structure on the Mississippi River system • Typical actions required when approaching regulatory or control structures (e.g., dams, control structures, locks)

💭 Think About

• Think about what a flashing amber/yellow light generally signals on inland waters—does it usually mark a safe channel line, a hazard, or a special control area? • Ask yourself what the Old River Control Structure is designed to do and whether vessels are normally encouraged to enter it or kept clear of it. • Consider which choices describe normal river navigation practice versus something you would only do under specific authorization or instruction.

✅ Before You Answer

• Verify in the Inland navigation guidance what flashing yellow/amber lights are used for near dams or control structures. • Check which answer choices involve staying in the main river channel versus entering or approaching a structure/inflow channel. • Confirm which river bank is referred to by right descending bank and left descending bank when traveling downstream.

Question 1 of 27070

As you approach Old River Control Structure Light you see a flashing amber light. Which action should you take?

Navigate as close to the right descending bank as safety permits

Navigate as close to the left descending bank as safety permits

Slow your engine speed to not more than 5 mph

Turn into the inflow channel as the bypass is now open

Question 1 / 2707066636eea28f7522a1c51aeb2

Question 1 of 2707066636eea28f7522a1c51aeb2

As you approach Old River Control Structure Light you see a flashing amber light. Which action should you take?

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Question 1 of 27070

As you approach Old River Control Structure Light you see a flashing amber light. Which action should you take?