The Monongahela has a siltier, sandstone bottom that gets stirred up a lot easier. The Allegheny River has bigger gravel and coarser sand, so it does not get stirred up as much. The extra sediment ...

3 was near the bottom of Center Street in Springdale ... 1 was formally opened on the Allegheny River, every steam whistle from Pittsburgh to Bradys Bend blew for five minutes in celebration.

30, 2024 5:01 a.m. | Friday, Aug. 30, 2024 5:01 a.m. Emergency response crews in the Allegheny Valley have a new tool to scout the water during river incidents. An underwater drone will assist ...