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The Arlington area includes 70 square miles in eastern Tarrant County, Texas. It is bounded on the west by the meridian 97° 10' 00" W, on the east by the line between Tarrant and Dallas Counties, and on the north and south by the parallels 32° 47' 30" and 32" 40' 00" N. The area is drained by the Trinity River and its tributaries, which together form a dendritic pattern. Erosion by these streams has produced a submaturely to maturely dissected terrain with maximum local relief of 200 feet. The degree of dissection varies from north to south. In the south there are smoothly contoured hills, the lower slopes of which merge with the sides of intervening valleys. In the north the hills tend to be flat-topped and the valleys V-shaped, with maximum depths of 200 feet. The most conspicuous topographic feature in the area is a dissected cuesta which rises along the southeastern slope of the Village Creek valley.

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