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.
The Allegheny River watershed in western New York State comprises 1879 mi2 (4867 km2) just north of the state line between Pennsylvania and New York. Historically the land in the Allegheny River watershed consisted almost entirely of beech-maple, northern hardwoods, white pine and hemlock forest.