CSO Activations
DATE OF ACTIVATION | CHE003 DISCHARGE AMOUNT [MG] |
CHEOO4 DISCHARGE AMOUNT [MG] |
CHE008 DISCHARGE AMOUNT[MG] |
---|---|---|---|
Boston Inner Harbor off end of Winnisimmet Street | Chelsea River off end of Pearl Street under the Andrew McArdle Bridge | Chelsea River off Eastern Avenue in line with old Willoughby Street | |
05/15/2020 | 0 | 0 | 0.04132 |
05/30/2020 | 0 | 0 | 0.015316 |
06/11/2020 | 0 | 0 | 0.011735 |
06/28/2020 | 0 | 0.117983 | 0.253361 |
06/29/2020 | 0 | 0.313702 | 0 |
07/17/2020 | 0 | 0.6466 | 0 |
07/23/2020 | 0 | 0.066371 | 0.184681 |
08/04/2020 | 0 | 0.025517 | 0.020993 |
09/30/2020 | 0 | 0 | 0.014896 |
10/13/2020 | 0 | 0 | 0.02219 |
11/23/2020 |
0 |
0.017932 |
0.042608 |
12/1/2020 | 0 | 0 | 0.015957 |
Totals for 2020 | 0 |
1.188105 |
0.623057 |
03/28/2021 | 0 | 0 | 0.027877 |
06/22/2021 | 0 | 0.106587 | 0.701971 |
07/01/2021 | 0 | 0 | 0.822101 |
07/02/2021 | 0 | 0.702123 | 0 |
07/09/2021 | 0 | 0 | 1.352611 |
07/12/2021 | 0 | 0 | 0.003658 |
07/12/2021 | 0 | 0 | 0.172040 |
07/27/2021 | 0 | 0 | 0.227265 |
07/30/2021 | 0 | 0 | 0.048165 |
08/9/2021 | 0 | 0 | 0.069383 |
08/19/2021 | 0 | 0.050299 | 0.271517 |
08/22/2021 | 0 | 0.014682 |
0.015025 |
09/01/2021 | 0 | 0 | 1.482459 |
09/02/2021 | 0 | 0.051107 | 0 |
09/09/2021 | 0 | 0 | 0.127535 |
09/16/2021 | 0 | 0 | 0.033838 |
09/28/2021 | 0 | 0 | 0.054198 |
Totals for 2021 | 0 | 0.222675 | 4.057032 |
10/13/2022 | 0 | 0 | 0.021 |
10/14/2022 | 0 | 0 | 0.078 |
11/30/2022 | 0 | 0 | 0.088231 |
Totals for 2022 | 0 | 0 | 0.187231 |
3/14/23 |
0 | 0 | 0.001818 |
7/10/23 | 0 | 0 | 0.0032 |
7/16/23 | 0 | 0.002763 | 0.0084 |
7/21/23 | Unknown | 0.056221 | 0.228583 |
7/29/23 | 0 | 0 | 0.598297 |
8/8/23 | 0 | 0 | 0.116148 |
01/10/24 | 0 | 0.010955 | 0.086920 |
Last CSO Activation
Updated on January 11, 2024
In accordance with NPDES Discharge Permit MA0101877, the City of Chelsea is providing this notice of the following Combined Sewer Overflow (CSO) activation(s):
CHE003: Mystic/Chelsea River confluence off end of Winnisimmet Street
Date of Activation: did not activate
CHE004: Chelsea River off end of Pearl Street under the Andrew McArdle Bridge
Date and time of discharge: 1/10/24 4:05AM
Date and time discharge ended: 1/10/24 4:30AM
Duration: 25 minutes
Average overflow volume for the past 3 years: .19 MG
CHE008: Chelsea River off Eastern Avenue in line with old Willoughby Street
Date and time of discharge: 1/10/24 4:05AM
Date and time discharge ended: 1/10/24 4:40AM
Duration: 40 minutes
Average overflow volume for the past 3 years: .21MG
Additional information regarding Chelsea’s CSOs is available on the City’s website. For specific information about this CSO activation, please contact:
Cate Fox-Lent
Department of Public Works
500 Broadway, Room 310
Chelsea, MA 02150
617-466-4203
cfox@chelseama.gov