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0.1.2 <br /> HYDROLOGY <br /> Hydrology deals with the occurance and distribution of water. More spe <br /> cifically, analysis of the hydrology of an area includes consideration of th <br /> factors preci:pitation, stream drainage systems , surface and subsurface water <br /> resources and potential for flooding. <br /> Orange County receives about 43 inches of precipitation a year. AlthoL <br /> the precipitation is fairly evenly distributed throughout the year, the drl-e <br /> season is the fait . July and August are the wettest months with the precipi <br /> tation total augmented by thundershowers. <br /> Major Features. The Eno River is the largest flowing body of water in <br /> Harmon Young Area Study. It is located along the northern boundary of the <br /> study and is one of the main streams in the Neuse drainage basin. The Eno <br /> drains into the Flat River in Durham County. <br /> Cates Creek is the second largest stream in the area study. This Cree <br /> flaws in a northerly direction into the Eno River and is located between 01 <br /> and New 86. <br /> �t. <br /> Stoney Creek, the next largest stream in the area study, originates in <br /> the southeastern corner and flows in a southerly direction, where it inter- <br /> ^' sect with a second branch of the Creek. Stoney Creek eventually flows back <br /> to the Eno River. <br /> There are a number of small impoundment areas located throughout the <br /> study area. Most of these were, or are, being used as farm ponds. <br /> Drainage Patterns. With the numerous ridge lines running In a north- <br /> , south direction throughout the area, the majority of surface drainage flows <br /> in an east-rwrs t- direction. . <br /> £ ' The surface drainage in the north-west section of the study area flows into <br /> a number of small unnamed streams and creeks that empty into the Eno River. <br /> Runoff from the central portion of the study area flows into Cates Creek wi <br /> also empties into the Eno. Stoney Creek, in the southeastern corner of the <br /> study area, collects the majority of drainage in that area. <br /> Floodplains. Floodplains are those areas which will be inundated y t <br /> in a specific storm event, normally defined as that storm whose probabilit. <br /> occuring is once every one hundred years. (SEE Hydrology-Vegetation Map) . <br /> are two streams in the Harmon Young Area Study which are associated with a <br /> year floodplains as designated on the U.S. Army Corps of Engineer Flood Ma <br /> The Eno River is characterized by a large area within the northernmost edg <br /> ,�., tt...,a.,t �o� �.ehilw dates C <br />