LATEST: Josh Svensson, County Department of Public Works engineer for the Oxford Basin redo, said Friday morning that it was indeed the flood gates and coupled with the high tide, the water was backing up into the Triangle. He said they had been working on the flood gates earlier in the day and an installed bladder “didn’t work.” There is a high tide this morning and one tonight.
That is the question that has not been answered as of this hour. Water is flowing into the residential areas via storm drains—curb openings and sewer tops and just arbitrarily new-made holes in the street. This started about 8 pm Thursday (30 July).
The drains that normally would be draining into the Oxford Basin were experiencing this reverse flow of water such as makes one suspect the Oxford Basin is draining into the low areas of Oxford Ave on both sides of Washington Blvd. A piece of sea weed was found and furthers the vote for the basin.
One resident mentioned the problems with the county leaving the flood gate open and with high tide, the Triangle gets flooded, she said.
Fire trucks were there looking for a burst water hydrant and left when they found there was not a hydrant problem. Department of Water and Power arrived and was looking for a broken water line. Nothing. DWP contacted his department to tell them that it was probably the Oxford Basin that was the problem and that they should notify the County. Parking enforcement arrived to block off the street. They were trying to divert traffic in case there was a sink hole created. Police closed Oxford north of Washington.

This shows a sewer cap with water coming out.

This looks like water going down the drain but it is actually flowing out of the drain.

A hole was made in Harbor Crossing lane and the water was cascading over the driveway into the street.

This is Howard at Oxford showing new holes created by the water pressure.

One of the parking enforcement officers found this sea weed that came out of the drain.

This is the Oxford north of Washington. One can see water is on the driveway.