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<br /> <br />-~- <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Physiographic Features <br />Two small dams, some man-made ponds and numerous natural ponds <br />lie within the basin. The Black Lake Dams are just below the Vail <br />Pass summit on Black Gore and as such have a minimal drainage area. <br />The area tributary to the Upper Black Lake is 0.6 square miles. The <br />Lower Black Lake (No.2) has a direct drainage of 1.2 square miles, <br />plus any discharge from the upper lake. These drainages will be <br />affected slightly by the completion of Interstate 70 through this <br />section. <br />The Gore Valley is approximately ten miles long and the valley has <br />been shaped by Pliestocene glacier action throughout much of the length <br />into the classical U-shaped section. Development within the valley has <br />been confined to the valley floor because of the steepness .of the adjacent <br />slopes and the U.S. Forest boundaries. <br />Nearly all of the sub-basins on the north side of the drainage <br />contain small natural. lakes at elevations near timberline. These lakes <br />or ponds are typically located within small glacier formed cirques or <br />depressions. Some of the lakes have filled through natural sediment <br />trapping and eutrophication processes and currently are bogs which are <br />highly efficient at detaining runoff. <br />Many of the ponds lie in the lower meadows in the valley, some being <br />natural ponds and bogs and a few small ponds have been created or reshaped <br />within the Vail Golf. Course. <br />The water supply for Vail is derived from Gore Creek, which receives <br />the majority of its water in the form of snowfall. <br />