General Structure and Writing Style. The function of a research design is to ensure that the evidence obtained enables you to effectively address the research problem logically and as unambiguously as possible.
ALLEGHENY RIVER HISTORY. Location: A river rising in north-central Pennsylvania and flowing about 523 km (325 mi) northwest into New York then southwest into Pennsylvania again, where it joins the Monongahela River at Pittsburgh to form the Ohio River.
From the highest point in Allegheny County, 1,401 feet at River Hill in Forward Township, to the 710 foot normal pool level of the Ohio River at the Point in Pittsburgh, and down to the 682 foot elevation on the banks of the Ohio as it exits the County in the west, the elevation varies by a bit more than 700 feet.