Gametitle-FO3 TP.png
Gametitle-FO3 TP.png

The Monongahela River is a river in the eastern former United States.


In 2277, the river's waters near the Pitt are highly toxic and radioactive, making safe swimming an impossible task.


  • Mona fell into the Monongahela River, causing her skin to peel and develop lesions.[1]
  • The shoreline and water are much more irradiated than any body of water in the Capital Wasteland (around 350 rads/sec on the river bank and around 600 rads/sec in the water). Drinking the water yields another 450+ rads, but no health. In general, the rad level increases even more as the river stretches east and west of the Pitt bridge, all the way up to 2,665 rads/sec.


Monongahela River appears only in the Fallout 3 add-on The Pitt.



  1. The Lone Wanderer: "Whoa. What happened to you?"
    Mona: "Go take a swim in the river. You'll find out for yourself, asshole."
    (Mona's dialogue)
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