Everything we do on the land surface impacts the water quality or
quantity of water in our streams and groundwater to some degree. These
impacts can cause changes in stream hydrology, stream geomorphology,
stream water quality, and stream ecology.
Part of CCWRA's
mission is to provide information and planning assistance to the
citizens, communities, businesses, organizations, and/or agencies of
Chester County to help ensure that these impacts and changes do not
adversely affect the safety, health and prosperity of the communities of
Chester County. By participating in regional water issues CCWRA is
able to provide best available technical information and water
management concepts that support sustaining the natural quality,
quantity and biodiversity of the County's water resources.
CCWRA also assists with sustainable water management by providing
reservoir water supplies, through planned and managed water releases
from the Authority's Chambers Lake Reservoir. These releases assist
with stream flow management and ensure adequate and sustainable water
supplies to citizens in Chester County and other downstream
In-stream flow management in the Brandywine Creek is supported by Chambers Lake Reservoir and Marsh Creek Reservoir during low flow periods. When flows at the Pennsylvania/Delaware state line (as measured at the USGS stream gage at Chadds Ford, PA) decline below 140 cubic feet per second (cfs), releases are often made from Chambers Lake Reservoir and/or Marsh Creek Reservoir.