Screen shot from video of flooding in Canary Square, Friday, Sept. 9, 2016.

Cap Blow-Out Cause of Massive Canary Square Flood

The blow-out of a cap on a large pipe under Centre Street is to blame for the spectacular flooding at the corner of Boylston and Centre. The flood appears to have started sometime after 11 p.m. Friday near the intersection with South Huntington Avenue where work crews had been active well into the evening. As of noon Saturday, 20 residents remained without water, according to Mark Van Dam, spokesperson for the Boston Water & Sewer Commission. Crews expect to have water service restored to those persons by 2 p.m. Saturday, he said. Here's what caused the flooding: Workers from Feeney Brothers removed a "thrust block," essentially a giant piece of granite from the end of an older water main.

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Water main break at Canary Square, Friday, Sept. 9, 2016.

Overnight Water Main Break Floods Centre Street

UPDATE: We found out what caused the massive flooding. ~~~~~

An apparent overnight water main break on Centre Street sent rivers of water cascading into one of Jamaica Plain's main thoroughfares late Friday night. The flood, which appears to have started sometime after 11 p.m. near the intersection with South Huntington Avenue where work crews had been active well into the evening, led to a series of posts, photos and videos shared on social media, as well as reports of low water pressure in residents' homes Saturday morning. Jamaica Plain News has a call in to the Boston Water and Sewer Commission. We'll update this story when we hear more from the agency.

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