Little Schuylkill Flow

[Upstream]

Does anyone know whether the Still Creek reservoir located in the head waters of the Little Schulkill is used to regulate the stream flow? Notice the increase in flow with no precipitation in the area on April 6.

http://waterdata.usgs.gov/pa/nwis/uv/?site_no=01469500&PARAmeter_cd=00065,00060,00010