1. A river that rises in northern West Virginia and flows north into Pennsylvania where it joins the Allegheny River at Pittsburgh to form the Ohio River
   - Monongahela River

Type of: river

Part of: Keystone State, Mountain State, PA, Pennsylvania, West Virginia, WV

Encyclopedia: Monongahela Monongahela, PA Monongahela, Pennsylvania

• seif dune
• seigneur
• Seigneur de Bayard
• seigneurial
• seigneury
• seignior
• seigniorage
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• seigniory
• Seiji Ozawa
• seine
• Seine River
• seiner
• seism
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• seismic disturbance
• seismo-
• seismogram
• seismograph
• seismographic
• seismography
• seismologic
• seismological
• seismologist