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s Robert Rush Miller 370 all channel, They accordingly excavated a sm from the San Simon. feet wide, for a short distance so thaThey about 4 feet deep and 20 ed in concentrated flow into t UeG on of the floods could be discharged da is a also built funneling levees so that there would band to Y there this artificial trough. It worked, water reaching places 6011 to S00 feet wide and from 10 feet to 30 f their effective work chasm, in many as the indirect result o Conservation feet deep, for 60 miles, „Efforts by the Soil to protect their, lands from overflow. th Creek finall checked the headward ethat liesf San e Simon Sy e of the ciener gullies, just short of its drainag roduced deep and wide gu New Mexico line. The the surface over most of the length of the permanently changing is a mountain tributary of the San valley. This stream Blue River Dina the Gila River below Cliftouon easte Blue Francisco River, which j the floor of the can Y of . In 1885 or 1886, grass, hardwoods, Arizona (Fig 1) d covered With g Tama (Mil-sodded an River was well orted many native trout, ,Salmo 9 was ream supp th of rams 700 feet, Th well and pine. The s had an average wed 1950) . e valley floods began to ler, all under cultivation. In 1900, settled, and was nearly regime of active eros incise and widen the chann el and a ion was well 1916, the valley bottom had been converted under way by 1906- BY ned for agriculture as well as for pas- into a wide wash ands cwas ent of the original arable area then remained turage; less than 8 Pte; Bryan, 1925) p• 342). es of ern (Olmstead, 1919, p• west-rth Little Colorado River.--This river and flow" °n rth andCrand the White Mountains of eastern Little ward to its junction with the Co o the RXteenth century, of driver at the head Canyon (Fig. 1), In the middle fine beautiful, and groves selects OP""' of p Colorado was described a 1 meaning the river of • almost as large as the Del l Norte, containing at roves of many cottonwoods thanin e and willows" It a' s to the g aRg Alameda, were ex groves, in reference 1937). In 1853, pp. 1851 7-th8), ere and at about the ' much of its. course (Colton, swamps above Winslow (Sit eves, "The river is le (1856, PP- 30-31) wrote as follows: ht to ten feet in same time Whi between alluvial banks eight to with cot- about 30 feet wide flowing are sP height.... The banks of the main stream