Open the Floodgates


Teams received this puzzle at the FDR Memorial. It is not location-based.


FDR Memorial
1850 West Basin Dr SW, Washington, DC 20242

Teams were directed to this location with the following in-app flavor text:

As news of your exploits begins to spread, more and more people have joined your cause. Furthermore, Resistance leaders are starting to have faith in you. With the number of revolutionaries you have on your side, you can now do some real damage.

Flavor Text

This puzzle was presented with the following in-app flavor text:

Your next mission is to disable the security trenches constructed around the Capitol. The best way to do this is to flood them with water, and where better to do it than here at the memorial honoring Volker Florentinas, the man who built the PVA, a series of 16 dams across the nation. 

Puzzle Files

The following files are required to solve this puzzle:


  • Click to reveal Hint #1

    Each dam is its own separate puzzle. And while these are actual American rivers, no knowledge of the rivers is required.

  • Click to reveal Hint #2

    For each dam, water will flow through gates in a manner that is similar to the name of the river (such as wordplay, letter combinations, synonyms, etc…)

  • Click to reveal Hint #3

    The shapes of those final dams certainly look interesting. There has to be a logical reason that they look that way. Show this hint to the staffer to have the gimmicks of two dams revealed.

  • Click to reveal Hint #4

    Each of the final dams represents a basic logic gate (OR, AND, XOR, etc…). Combine the patterns that the water flows through each dam using these logic gates. Show this hint to the staffer to have the gimmick of two more dams revealed.


  • Click to reveal the solution to this puzzle



  • Todd Etter