These streets likely drain directly to the bay. For those needing a refresher water flows down. The tides today without the storm would be high, add the rainfall and the fact that the storm direction would push water into the bay and you get flooding in low lying areas BECAUSE there is NO WHERE for the water to go. When houses are built on former wetlands there is likely to be flooding during these events. You're stuck waiting for the tide to be lower than your storm water outfall.