Purpose: To investigate observe the effects of sewage discharges on a stream.
Summary:
Students will be introduced to Stream Zones.
Students will be introduced to the DO Dag curve.
Students will be introduced to the Streeter – Phelps Equation, and how it is utilized in the process discharge permitting to assess the impact of a waste water discharge on the dissolved oxygen levels of the receiving stream.
Using data provided students will, using the DO Sag Program determine the DO level at the critical point, and is distance downstream from the discharge point.
They will use the results to determine if the discharge meets DEP Water Quality Standards.
Materials:
DO Sag Program Excel
DO Sag Program web based
Documents:
Stream Side Science User’s Manual
Oxygen sag Curve Computations
Presentation: The effects of Sewage discharges on the DO Sag of a stream
