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Catch basin modernization program and flood mitigation strategies
2:48:11
ยท
112 sec
Anastasios Georgelis details DEP's efforts to modernize and improve the city's catch basin system to mitigate flooding issues.
- 150,000 catch basins maintained across the city
- Implementation of slotted manhole covers to combat matting over conditions
- Goal to install 10 slotted covers per month, with 100 installed this fiscal year
- New catch basin design with narrower openings and relief slots to prevent clogging
- Retrofit program adding grill plates to existing catch basins, with 700 installed this fiscal year
Anastasios Georgelis
2:48:11
Thank you commissioner.
2:48:13
So we do have 150,000 catch basins that we have to maintain across the city.
2:48:18
And we do know that sometimes catch basins get clogged for different reasons.
2:48:22
One is the matting over condition, which is the above ground condition.
2:48:27
And to combat that, we've been looking at different strategies over the last two or three years.
2:48:32
The slotted mantle covers that the commissioner mentioned, our goal is to install 10 of them a month.
2:48:38
We've installed about 100 of them so far this fiscal year.
2:48:43
And those are the areas that we know are prone to matting over.
2:48:46
And this way, we evaluate the ones that are most frequent, that we get that slotted cover.
2:48:53
So this way, if the water starts pooling because it can't get down the catch basin, it jumps the curb, we have the slotted cover installed on the sidewalk.
2:49:01
And then that takes the flooding.
2:49:03
So this way we only have a couple of inches of flooding and not the massive foot or two in.
2:49:07
But in conjunction to the sliding covers, what we started doing, and if you know if you've seen our catch basins throughout the city, the curb pieces, some of them are wide open, some of them are smaller openings.
2:49:20
We've changed about three years ago, we changed the design where it's a more narrower opening and then we have some relief slots right above it.
2:49:29
So that design, you know, you're going to walk by, you're not going to understand the difference.
2:49:32
But for us, it's important.
2:49:34
Because by having that narrower open prevents some of the larger debris from getting in the catch basin, which causes them to clog more frequently.
2:49:42
So we're trying to improve the design of the catch basins to prevent the clogs that happen more often.
2:49:47
And then what we actually even did is some of the catch basins, we started a retrofit where we're putting a a grill plate over it, which is a simple design that we could do pretty quickly and and get those and reduce the amount of debris that's getting in the catch basins.
2:50:01
We put in about 700 of those this fiscal year.