Have a outside sump pump that runs to a near-by brook . The piping goes the length of the yard and into a 4 inch pipe that goes through the berm that is buildt up to keep the brook from flooding ..My question is:
sometimes the water level gets above 4 inch pipe so sump has no where to pump to .I was wondering if I put a 90 degree elbow on the 4 inch pipe and 3 foot extension pointing down stream would the current pull the water if the pump was running(almost like a vacum)?? even though the water is above the outlet??