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<br /> <br />15. Extent and character or dama!;es in flooded areas. - A:3 noted <br />in Table 3 the September 1970 storms resulted in the flooding of <br />approximately 19,500 acres in the San Juan-Colorado SJ.bregion and <br />1,600 acres in the Dolores and Uncompahgre River Watersheds or the <br />Upper Main stem Subregion. <br /> <br />16. In the San Juan-Colorado Subregion the intense stonn in the <br />upper elevation areas inflicted heavy damage to trees, roads, <br />trails, recreation facilities, irrigation headgates, mine and rail- <br />road properties. <br /> <br />17. en Vaileci to Creek, a tributary to the Los Pinos River (called <br />Pine River locally), rloodwaters damaged or destroyed vacation <br />hornes, trailers and private vehicles. Vacationers caught unaware <br />during their Labor Day weekend outing were rorced to evacuate homes, <br />cabins and campsites because or floodwater that also destroyed <br />many bridges, roads and irrigation racilities in the area. <br /> <br />18. Piedra River floodwaters damaged roads, irrigation facilities <br />and eroded pastureland. No residences were reported damaged in <br />this watershed; however, a private resort and the U. S. Forest <br />Service reported extensive damage to facilities located in the <br />higher elevations. The San Juan River mainstem above its con- <br />fluence llith the Rio Blanco flowed at near channel capacity, <br />damaging many headgates or irrigation racilities along the water- <br />course. Below the confluence llith the Rio ID.anco overbank nows <br />occurred at many points, flooding pasture, and some rarlll buildings <br />and damaging bridge abutments. The Rio BlancO overflowed its <br />banks at many points damaging adjacent pastures, rarm buildings, <br />roads, bridges, rences, and irrigation racilities. In general, all <br />of the streams flowing in these areas discharged a tremendous amount <br />or debris necessitating large cleanup operations before lands can <br />again be used and streams reestablished in old channels. Along the <br />Navajo River the damages reported were mainly to irrigation <br />racilities. Below Navajo Reservoir streamf'low was well contained <br />within channel areas except in random areas where the shifting <br />streambed invaded adjacent agricultural areas. In the area of Aneth <br />and Bluf'r, Utah, damage occurred to oil and gas wells, transmission <br />lines, Indian garden plots, dwellings and the approach to a foot- <br />bridge crossing the San Juan River. In the area of Blurf, Utah, <br />an emergency levee previously constructed by the Corps of Engineers <br />railed when floodflows exceeded design capacity, damaging irrigation <br />racilities and field crops. In this reach tributary streams rrom <br />the south damaged small reservoirs, roads, stockpens, and other <br />improvements within the Apache Indian Reservation. McElmo and <br />Montezuma Creeks along their lower reaches damaged many small farms <br />and roads when floodwaters filled the canyons rrom wall to wall. <br />Damage in the Colorado reach of these watersheds included roads, <br />private reservoirs, and irrigation, facilities. In the community <br />or Dove Creek, some homes were rlooded. <br /> <br />12 <br />