The natural terrain of the area has been modified in the urban core of the city by grading , but it maintains its gentle rolling character in the outlying areas . Numerous small creeks are found throughout the city and small lakes and woodlands lie in the northern and southern portions of the city . Sowashee Creek runs through the southern portion of the city and branches off into Gallagher 's Creek , which flows through the center of the city . Loper 's Creek runs through the far @-@ western part of the city while smaller creeks including Shearer 's Branch , Magnolia Creek , and Robbins Creek are dispersed throughout the city .