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The Geography of Atlanta encompasses , of which is land and is water. The city is situated among the foothills of the Appalachian Mountains, and at above mean sea level, Atlanta has the highest elevation out of major cities east of the Mississippi River.〔(“Altitudes of Major US Cities,” Red Oaks Trading, Ltd. )〕 Atlanta straddles the Eastern Continental Divide, such that rainwater that falls on the south and east side of the divide flows into the Atlantic Ocean, while rainwater on the north and west side of the divide flows into the Gulf of Mexico. Atlanta sits atop a ridge south of the Chattahoochee River, which is part of the ACF River Basin. Located at the far northwestern edge of the city, much of the river’s natural habitat is preserved, in part by the Chattahoochee River National Recreation Area. ==Climate== The climate of Atlanta and its metropolitan area is humid subtropical, (Cfa) according to the Köppen classification, with four seasons including hot, humid summers and cool winters that are occasionally cold by the standards of the southern United States; the city and its immediate suburbs are located in USDA Plant Hardiness Zone 8a, although the far northern suburbs begin to transition to Zone 7b.〔()〕 Summers, are long and consistently hot and humid. The daily average temperature in July is , with temperatures occasionally exceeding , and slight breezes, and typically a 20–40% chance of afternoon thunderstorms. During the summer afternoon thunderstorms, temperatures may suddenly drop below with locally heavy rainfall. January averages , with temperatures in the suburbs slightly cooler. Warm, maritime air can bring springlike conditions while strong Arctic air masses can push lows into the teens (−11 to −7 °C). Snow may not occur in every season in the city and inner suburbs but does every season in the northern metro. When it does, almost always during the period of December through March, Typical of the southeastern U.S., Atlanta receives abundant rainfall, which is relatively evenly distributed throughout the year, though spring and early fall are markedly drier. Average annual rainfall is about , with late winter and early spring (as well as July) being the wettest and fall (especially October) being the driest. Despite having far fewer rainy days, average yearly rainfall is higher here than in the Seattle area, especially due to heavy thunderstorms and occasional tropical depressions. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Geography of Atlanta」の詳細全文を読む スポンサード リンク
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