Pond Boss Forums INTRO Questions & Observations Will this improve or destroy my pond?

My relative is intending to make this change soon unless there is evidence of causing any harm.

I didn't fully explain earlier that there is an existing spillway at the opposite end of the water source, and the new outlet, sited near the water source, is also a spillway. So only surface water is going through either outflow.

btw, the water source diverted from the stream has very little silt, as it goes through various screens and collection boxes before getting to the pond.