A frigid cold snap last week caused rivers to freeze. Reports vary from 3 to 6 inches of ice on the Allegheny River ... this week that could cause the Monongahela River to rise.

An asphalt link between some of Pittsburgh's most notable spots, the Three Rivers Heritage Trail lines the banks of the Allegheny, Monongahela ... check out the map on the Three Rivers Heritage ...

At the time, they shared that ice had already begun to form on the Allegheny River but not on the Monongahela River or Ohio River. They cautioned that if temperatures remain below 22 degrees more ...

FLOODING. THIS IS THE ICE FORMATION ON THE ALLEGHENY RIVER AND THE ARMY CORPS OF ENGINEERS SAYS IN THIS AREA, THE ICE IS PROBABLY 2 TO 3IN THICK. BUT AS YOU GO FURTHER NORTH, ALL THE WAY UP INTO ...

Rising at the confluence of the Allegheny and the Monongahela rivers at Fort Pitt (now Pittsburgh’s “Golden Triangle”), the Ohio wound through coal-rich mountains to reach the seven hills of ...