Water quality hydrology on surface mined watersheds
Water quality and discharge on four watersheds disturbed by surface coal mining at the Edna Mine in northwestern Colorado have been monito red for about three years. Water quality and discharge have also been monitored in an adjacent stream at points above and below the entrance of mine drainage into the stream. Dissolved solids inflow to the stream between these two points equaled 6.lx106 kg in 1974 and 5.3x106 kg in 1975 for an increase in dissolved solids load of two to three times along the reach of the stream adjacent to the mine. About 70 to 80 percent of the dissolved solids inflow occurs ...
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