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TROUT CREEK FLOOD PLAZN <br />~ General <br />Sunland Mining Corp's Apex Mine No. 2 is located in Section 22, <br />Township 4 North, Range 85 West, of the 6th Principal Meridian, approx- <br />imately 5 miles west of Oak Creek, Colorado. The mine site is <br />located in a steep, narrow valley adjacent to Trout Creek. The <br />' area is characterized by sparse vegetation, primarily scrub oak, <br />on steep south-facing slopes and aspen and spruce on the gentler <br />north-facing slopes. The elevation of the mine site is approximately <br />7400 feet. <br />', Hydrology <br />The drainage basin of Trout Creek which lies above Apex Mine <br />arises from an elevation of 7400 feet at the mine to approximately <br />• 12,000 feet along the ridges at the south end. It includes an <br />area of about 32.95 square miles, and has a length of about 17.3 <br />miles. The drainage basin is shown in Figure 1 Vicinity Map, page <br />2, which is taken from a map prepared by the Army Map Service titled <br />"Craig, Colorado" and numbered NR-13-10. <br />Based on a review of records of the D.S. Geological Survey, <br />and other governmental and private sources, there are no stream <br />~ gages in the study area with periods of record sufficient for a <br />' statistical analysis of runoff events. There are two gages listed <br />I <br />in "Magnitude and Frequency of Floods in Colorado, Part~:9" as <br />published by the U.S. Geological Survey in 1966. Gage No. 2430, <br />"Trout Creek near Phippsburg, Colorado" is located upstream of the <br />. Apex Mine near the headwaters of Trout Creek. it has a drainage <br />~ ` ~ area of about 16.0 square miles. The gage, however, only has a <br />i <br />1 , <br />-1-~ (3t <br />