What elevation is the Ohio River at?

I have a 38 sw ctg serial 921860 it has 6 barrel and is a 6 shot revolver how old is it? What is the name of a lake in Uganda? What is the religious roller coaster? What are the top ten biggest wetlands in the world? How many exits in a building? What is the historical background of Leaning Tower of Pisa? What kind of housing did the northwest Indians live in? What was the name of the monk who established a string of Spanish missions along the Pacific coast of America? What type of inspection would a third class immigrant get at Ellis island? Where are you most likely to find an photoautotroph? Is Abigail Adams related to Sam Adams? What is carmel made out of? What are networks of rills and creeks and streams flow into a river? Who was Taharka? Did anyone ever fall or jump from the statue of liberty? Were is the chatham islands? Why are temperate forests located where they are? What does the earth's oceans and seas and lakes and rivers and glaciers and in earth make out of? What are the main abiotic factors that affect yellow stone national park? What is the base level for white river in Indiana?