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.
See map for locations. The Three Rivers Heritage Trail is a greenway system in the Pittsburgh region running along both sides of the Allegheny, Monongahela and Ohio Rivers. It is broken into segments; The Chateau, North Shore & Millvale Segments travel along the north side of the of the Ohio & Allegheny Rivers.