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<br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />I <br />I <br />. <br />I <br />I <br />I <br />'. <br />I <br /> <br />O~2707 <br /> <br />the flatter ground, and, therefore, much greater wind-caused dust <br />and earth erosion. <br /> <br />Other portions of the service area are very similar to the <br />reservoir area in sources and ratings of pollution except that the <br />oil shale and coal mine developments will be potential generators <br />of dust, smoke, and fumes considerably in excess of those at the <br />reservoir site. <br /> <br />J. Climate <br /> <br />The nearest weather station is at Rangely and has been in opera- <br />tion almost 30 years (1). The area has low average humidity, rainfall, <br />and snowfall. The mean annual temperature is 46.20F. and the average <br />growing season is 147 days (10). Mean temperature in January is 18.40F. <br />and in July it is 73.6oF. Precipitation averages about 9 inches per <br />year. Snowfall varies widely between 15.5 inches (1963) and 71.8 inches <br />(1908). Winds are predominately from the west or southwest (4). The <br />climate in the Rangely area is categorized as temperate, arid to semi- <br />arid and has been called a desert climate by many people. Irrigation <br />is essential for successful farming. <br /> <br />The area surrounding Range1y has an open character and is un- <br />protected from mass air movements although the reservoir site is <br />partially protected by ridges and hills. It has an average elevation <br />of 5285 feet ms1. Storms in the area are not violent and do not cause <br />extensive damage. <br /> <br />Climatological problems within the area include frequent ice jams <br />in the White River during the early spring runoff. Often these jams <br />create flooding along the river with some property loss in Range1y. <br /> <br />11-27 <br /> <br />.J <br />