Hans Yost Creek  Hans Yost Creek is a tributary of Deep Creek in Schuylkill County, Pennsylvania, in the United States. It is approximately long and flows through Foster Township and Barry Township. The watershed of the creek has an area of . The creek is designated as an impaired waterbody, with the causes being metals and pH and the probable source being abandoned mine drainage. It has no named tributaries, but two abandoned mine discharges flow into it. The creek's watershed was extensively mined in the late 1800s and early 1900s, but the only remaining active mining permits are for remining. Hans Yost Creek begins in a large valley in Foster Township. It flows in a westerly direction through the valley for several tenths of a mile, entering Barry Township. The creek then turns southwest for a short distance before turning west. After a few tenths of a mile, it turns southwest for several tenths of a mile, entering a much narrower valley. The creek eventually turns in a westerly direction for several tenths of a milebriefly turning northwest and then southwest along the waybefore reaching the end of its valley and turning northwest. A short distance further downstream, the creek reaches its confluence with Deep Creek. Hans Yost Creek joins Deep Creek upstream of its mouth. Hans Yost Creek has no named tributaries, nor are any tributaries visible on the United States Geological Survey map of the Tremont quadrangle. However, a few small intermittent streams do flow into the creek's headwaters. Hans Yost Creek is designated as an impaired waterbody for its entire length. The causes of the impairment are metals and pH and the probable source of impairment is abandoned mine drainage. There are two abandoned mine discharges in the creek's watershed. One is known as the Moser Mine Pool Discharge and enters the creek in its upper reaches. The estimated flow of this discharge is 0.259 million gallons per day. The other is known locally as Rattling Run and is formed from the Collapsed Tunnel Discharge and the Buck Mountain Vein Overflow Discharge. This discharge enters the creek in its lower reaches. The average discharge of Hans Yost Creek above the Moser Discharge has been estimated to be 0.259 million gallons per day, while below the discharge, it has been estimated at 0.518 million gallons per day. Above the Rattling Run discharge, the creek's discharge was found to average at 1.49 million gallons per day, while below the discharge, it was 3.59 million gallons per day.