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<br />TABLE 1 <br />TRIBUTARY DRAINAGE AREAS <br /> <br />stream <br /> <br />Drainage Area' (SQ. Mi.) <br /> <br />Smith River <br />Belt Creek <br />Dearborn RiVer <br />Sun River <br />Marias River (excluding Teton) <br />Teton River (Trib. to Maria.s 'R.) <br /> <br />. 2036 <br />935 <br />350 <br />2020 <br />7219 <br />.1881 <br /> <br />c. Principal flood damage within the area was sustained in the <br />Marias and Sun River basins.' The .Marias River flows in an easterly <br />direction, joining the Missouri River near~he town of Loma. Although <br />the draina.ges of the Marili.sarid Teton Rivers 'constituteone basin, they <br />are sometimes regarded as two separate basins. as. the Teton enters the' <br />Marias only 3 miles above 'its confluence with the MiSsoUri River. . The <br />Teton River originates at the Continental Divide while the Marias River <br />is formed by the junction of Birch Creek and Cut Bank Creek about 12 <br />miles southeast of Cut Bank, Montana. The headwaters area of the <br />Marias River consists of several small creeks which flow in.to Birch and <br />Cut Bank Creeks. <br /> <br />d. 'The sun River basin is adjacent to the Teton River basin. <br />Rising at the CoIitinental Divide in.Lewis and Clark National Forest, <br />the stream flows generally eastward to enter the Missouri River at <br />Great Falls. <br /> <br />I <br /> <br />e. Other contiguous and outlying basin areas sustaining flood <br />damage from the June 1964 floods include 'the Milk and St. Mary Rivers, <br />which flow into Canada, the Judith River, Musselshell River, Dearborn <br />River, Jefferson River, ~eltCreek, and Highwood Creek basins, the <br />mainstem of the Missouri River from Canyon Ferry Dam to Fort Benton, <br />and other minor tributary drainage basins of the Missouri River from its <br />- headwaters' to -Fort Peck -RelJet'voir. <br /> <br />8. PHYSIOGRAPHIC t'EATURES <br /> <br />The western portion of the disaster area is characterized by the <br />high precipitous slopes .of the Rocky Mountains; .To the east; the area <br />consists of rolling and partly dissected pla.teaus typical of the Great <br />Plains area of the United States. The mountainous area is highly <br />folded and faulted. Surface soils vary considerably and range from a <br />loose sandy loam to a heavy cls;y. Considerable areas of gravel-shot <br />soil occur in different localities, sometimes being too coarse to permit <br />cultivation. <br /> <br />': <br /> <br />3 <br /> <br />[ <br />'- <br />