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Impaired Reaches

Although the main stem of Ridley Creek is not listed as impaired at any point, several tributaries below the Media public water intake are listed as impaired due to alteration (in quantity and velocity) of stormwater flows:

• Gayley Run (Media, Upper Providence)

• Broomall’s Run (Media)

• Beatty Run (Nether Providence)

All of Pennsylvania’s streams are periodically assessed by DEP to determine whether the waters are meeting their designated uses.  Biannually,  DEP publishes the Integrated Water Quality Monitoring and Assessment Report,  which includes the 305(b) assessment. Segments which fail to attain their designated uses are then listed on the 303(d) Impaired Waters list and placed on a schedule for DEP to develop a control plan for discharges to the stream, including stormwater runoff, that strives to bring that stream segment back into compliance. For current and proposed 303(d) reports, click here.