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Drury Run
Drury Run (also known as Drury's Run) is a tributary of the West Branch Susquehanna River in Clinton County, Pennsylvania, in the United States. It is 7.71 miles (12.41 km) long and its watershed is 11.5 square miles in area, most of which is forest. The stream's tributaries are affected by acid mine drainage, as are the lower reaches of the stream itself. It begins in Tamarack Swamp and flows through Leidy Township, Noyes Township, and Renovo. Brook trout, brown trout, creek chub, and eastern blacknose dace all inhabit the stream.
Drury Run begins in the Tamarack Swamp, near the community of Tamarack, in Leidy Township. The stream begins flowing southwards, following Pennsylvania Route 144. It passes Cove Hollow, Cal Hollow, Pong Hollow, and Jordan Hollow over the next several miles. It then flows into a valley which gradually gets deeper and narrower. In the southern part of Leidy Township, it picks up the tributaries Sandy Run and Woodley Draft and the stream bends southeast. At the southern border of the township, it flows through the Renovo Reservoir and enters Noyes Township, continuing southeast past abandoned strip mines. It picks up the tributary Stony Run before entering the West Branch Susquehanna River on the western edge of Renovo.
The named tributaries of Drury Run, proceeding downstream, are Sandy Run, Woodley Draft, Whiskey Run, and Stony Run. The Sandy Run sub-watershed has an area of 3.6 square miles (9.3 km2) and 5.45 miles (8.77 km) of streams. The Woodley Draft sub-watershed has an area of 1.1 square miles (2.8 km2) and 1.82 miles (2.93 km) of streams. Whiskey Run is not named in gazetteers or official lists of streams; it consists of acid mine water discharging from a mine pool. The Stony Run sub-watershed has an area of 4.04 square miles (10.5 km2).
The pH of Drury Run ranges from 5.3 to 5.8 at a site downstream of Tamarack Swamp.
At the mouth of Stony Run, the concentration of aluminum in the water is 7.11 milligrams per liter and there is a daily load of 96.65 pounds (43.84 kg). The iron concentration is 0.29 milligrams per liter and the load of this metal is 3.94 pounds (1.79 kg) per day. The concentration of manganese is 11.81 milligrams per liter, with a daily load of 160 pounds (73 kg). The acidity concentration is 67.35 milligrams per liter and the alkalinity concentration is 2.77 milligrams per liter. The daily loads are 915 pounds (415 kg) and 37.6 pounds (17.1 kg), respectively.
At its confluence with Drury Run, Whiskey Run has an aluminum concentration of 11.09 milligrams per liter and the daily load of aluminum is 16.65 pounds (7.55 kg). The iron concentration is 5.3 milligrams per liter and 0.93 pounds (0.42 kg) of iron flows through the stream each day. The concentration of manganese is 11.81 milligrams per liter and the daily load of manganese is 7.96 pounds (3.61 kg). The acidity concentration is 73 milligrams per liter and the alkalinity concentration is 0.83 milligrams per liter. The daily loads of these are 109.68 pounds (49.75 kg) and 1.25 pounds (0.57 kg), respectively. To meet the U.S. Environmental Protection Agency's maximum allowable load requirements, the acidity load would need to be reduced by 99.5%. The total daily load of acid mine drainage in the watershed is 658 pounds (298 kg) per day. The concentration of sulfates at the stream's headwaters is 5.8 milligrams per liter, but at the mouth the concentration is 67 milligrams per liter. The concentration of sulfates at the mouth of the tributary Stony Run is 271 milligrams per liter.
As is typical for streams that begin in a bog, the first 1.0 mile (1.6 km) of Drury Run, near Tamarack Swamp, is stained brown from tannin in the stream. The presence of tannin causes the waters in the upper part of the stream to be slightly acidic. There is a high concentration of dissolved organic compounds in the stream.
Drury Run experiences acid mine drainage, mostly in the final 3.5 miles (5.6 km). The tributary Stony Run is the most affected by acid mine drainage of all the tributaries of the stream.
Drury Run
Drury Run (also known as Drury's Run) is a tributary of the West Branch Susquehanna River in Clinton County, Pennsylvania, in the United States. It is 7.71 miles (12.41 km) long and its watershed is 11.5 square miles in area, most of which is forest. The stream's tributaries are affected by acid mine drainage, as are the lower reaches of the stream itself. It begins in Tamarack Swamp and flows through Leidy Township, Noyes Township, and Renovo. Brook trout, brown trout, creek chub, and eastern blacknose dace all inhabit the stream.
Drury Run begins in the Tamarack Swamp, near the community of Tamarack, in Leidy Township. The stream begins flowing southwards, following Pennsylvania Route 144. It passes Cove Hollow, Cal Hollow, Pong Hollow, and Jordan Hollow over the next several miles. It then flows into a valley which gradually gets deeper and narrower. In the southern part of Leidy Township, it picks up the tributaries Sandy Run and Woodley Draft and the stream bends southeast. At the southern border of the township, it flows through the Renovo Reservoir and enters Noyes Township, continuing southeast past abandoned strip mines. It picks up the tributary Stony Run before entering the West Branch Susquehanna River on the western edge of Renovo.
The named tributaries of Drury Run, proceeding downstream, are Sandy Run, Woodley Draft, Whiskey Run, and Stony Run. The Sandy Run sub-watershed has an area of 3.6 square miles (9.3 km2) and 5.45 miles (8.77 km) of streams. The Woodley Draft sub-watershed has an area of 1.1 square miles (2.8 km2) and 1.82 miles (2.93 km) of streams. Whiskey Run is not named in gazetteers or official lists of streams; it consists of acid mine water discharging from a mine pool. The Stony Run sub-watershed has an area of 4.04 square miles (10.5 km2).
The pH of Drury Run ranges from 5.3 to 5.8 at a site downstream of Tamarack Swamp.
At the mouth of Stony Run, the concentration of aluminum in the water is 7.11 milligrams per liter and there is a daily load of 96.65 pounds (43.84 kg). The iron concentration is 0.29 milligrams per liter and the load of this metal is 3.94 pounds (1.79 kg) per day. The concentration of manganese is 11.81 milligrams per liter, with a daily load of 160 pounds (73 kg). The acidity concentration is 67.35 milligrams per liter and the alkalinity concentration is 2.77 milligrams per liter. The daily loads are 915 pounds (415 kg) and 37.6 pounds (17.1 kg), respectively.
At its confluence with Drury Run, Whiskey Run has an aluminum concentration of 11.09 milligrams per liter and the daily load of aluminum is 16.65 pounds (7.55 kg). The iron concentration is 5.3 milligrams per liter and 0.93 pounds (0.42 kg) of iron flows through the stream each day. The concentration of manganese is 11.81 milligrams per liter and the daily load of manganese is 7.96 pounds (3.61 kg). The acidity concentration is 73 milligrams per liter and the alkalinity concentration is 0.83 milligrams per liter. The daily loads of these are 109.68 pounds (49.75 kg) and 1.25 pounds (0.57 kg), respectively. To meet the U.S. Environmental Protection Agency's maximum allowable load requirements, the acidity load would need to be reduced by 99.5%. The total daily load of acid mine drainage in the watershed is 658 pounds (298 kg) per day. The concentration of sulfates at the stream's headwaters is 5.8 milligrams per liter, but at the mouth the concentration is 67 milligrams per liter. The concentration of sulfates at the mouth of the tributary Stony Run is 271 milligrams per liter.
As is typical for streams that begin in a bog, the first 1.0 mile (1.6 km) of Drury Run, near Tamarack Swamp, is stained brown from tannin in the stream. The presence of tannin causes the waters in the upper part of the stream to be slightly acidic. There is a high concentration of dissolved organic compounds in the stream.
Drury Run experiences acid mine drainage, mostly in the final 3.5 miles (5.6 km). The tributary Stony Run is the most affected by acid mine drainage of all the tributaries of the stream.