Archive of Massachusetts ENvironmental Data

Website and analysis code for AMEND, the Archive of Massachusetts Environmental Data

New England Center for Investigative Reporting 2011 MA Combined Sewer Overflow data

Data source

In 2013, the New England Center for Investigative Reporting (NECIR) published an examination of sewage overflows into New England waterways. To support this work, NECIR undertook a region-wide census of combined sewer overflow (CSO) discharges in the year 2011 by contacting individual state authorities. In MA, NECIR cited the MA Department of Environmental Protection and MA Water Resources Authority as their sources.

Because there is as yet no systematic monitoring or reporting system for these discharges, and because this census work has not been repeated and published since this effort, this is the most recent year for which statewide data is available. The dataset includes a “note” column specifying the source of each reported discharge. Also note that many of the CSO outfall locations are approximate, as noted in the file.

The NECIR 2011 dataset was published as a Google Fusion Table. These records have been archived on this site, last updated on 24 August 2023.

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In addition to including this data in the integrated AMEND Database, we provide them in CSV format below.

Data table: 2011 MA CSO discharges

Nearest Pipe Address Municipality Discharge Body 2011 Discharges in Millions of Gallons 2011 Discharge Count Latitude Longitude Notes
500 West Water St. Taunton Taunton River 3.66 2 41.8805425498 -71.0923419214 loc. from DES DES draft data
Quinsigamond Ave. Worcester Mill Brook to Blackstone River not avail not avail 42.2466365031 -71.8019968665 loc. from DES DES draft data
Cleghorn St at Oakhill Rd. Fitchburg Nashua River 0.16 7 42.5811467749 -71.8218996722 loc. from DES draft data
479 Water St. at Burnett St. Fitchburg Birch Brook 0.17 8 42.5734765373 -71.789371552 loc. from DES draft data
Boutelle St. at Lunenburg St. Fitchburg Baker Brook 0.38 11 42.5855845964 -71.7777258006 loc. from DES draft data
Main St. at Post Office Fitchburg Nashua River 2.14 22 42.5857490028 -71.8063374517 loc. from DES draft data
265 Summer St. Fitchburg Nashua River 8.42 18 42.571303 -71.774551 approx.; loc n/a.
Summer St. grit chamber Fitchburg Nashua River 4.09 16 42.5661840025 -71.7721784731 loc. from DES draft data
98 Laurel St. Fitchburg Nashua River 11.50 17 42.5807201475 -71.796760673 loc. from DES draft data
Daniel St. at Allen Pl. Fitchburg Nashua River 1.11 6 42.5815929045 -71.8185182154 loc. from DES draft data
405 Water St. Fitchburg Birch Brook 0.42 8 42.5748758973 -71.7905381528 loc. from DES draft data
Clarendon St Fitchburg Nashua River 0.98 24 42.581724 -71.820633 approx.; loc n/a.
Walker St. Lowell Merrimack River 3.40 6 42.6468283879 -71.3334058981 loc. from DES draft data
Beaver St. Lowell Beaver Brook 10.70 17 42.6597558187 -71.3187381025 loc. from DES draft data
West St. Lowell Merrimack River 73.80 29 42.6520069611 -71.3108416531 loc. from DES draft data
Warren St. Lowell Concord River 42.30 30 42.6435081197 -71.3052364737 loc. from DES draft data
Tilden St. Lowell Merrimack River 28.40 40 42.6500854149 -71.3103208494 loc. from DES draft data
Barasford Ave. Lowell Merrimack River 22.00 27 42.6451835481 -71.2879793849 loc. from DES draft data
Merrimack Station Lowell Merrimack River 109.40 37 42.6486316059 -71.290927737 loc. from DES draft data
Buttonwood Ave. Haverhill Merrimack River 3.19 3 42.7699967652 -71.0642285765 loc. from DES draft data
Essex St. Haverhill Merrimack River 14.10 29 42.7727603542 -71.0822307401 loc. from DES draft data
Little River N. Haverhill Merrimack River 5.79 36 42.7755201127 -71.0850561169 loc. from DES draft data
Little River S. Haverhill Merrimack River 1.11 19 42.7751012638 -71.0850944292 loc. from DES draft data
Winter & Hale St. Haverhill Merrimack River 0.09 1 42.777685 -71.086822 approx.; loc n/a.
Varnum St. Haverhill Merrimack River 1.57 1 42.7664888688 -71.0933258214 loc. from DES draft data
Bradford Ave Haverhill Merrimack River 8.89 38 42.7703361684 -71.0853391523 loc. from DES draft data
S. Prospect St. Haverhill Merrimack River 0.16 2 42.7710623598 -71.083379438 loc. from DES draft data
Middlesex St. Haverhill Merrimack River 1.28 2 42.7725655938 -71.0790685388 loc. from DES draft data
So. Main St. Haverhill Merrimack River 0.19 2 42.7731561977 -71.0758655108 loc. from DES draft data
Osgood St. Lawrence Merrimack River 7.69 2 42.7040342331 -71.1502300214 loc. from DES draft data
Island St. Lawrence Merrimack River 34.50 8 42.7061062532 -71.1468732155 loc. from DES draft data
Mansfield St. Gloucester Gloucester Harbor 0.18 3 42.6096821712 -70.6696989748 loc. from DES draft data
Rogers St. Gloucester Harbor Cove 0.11 2 42.610790372 -70.6640590225 loc. from DES draft data
off Fishermans Wharf Gloucester Harbor Cove 0.04 1 42.6108369508 -70.6636286313 loc. from DES draft data
109 Rogers St. Gloucester Inner Harbor 1.16 4 42.6132373389 -70.65731621 loc. from DES draft data
E. Main St. Gloucester Inner Harbor 0.20 7 42.6164325403 -70.6512941763 loc. from DES draft data
E. Main St. Gloucester Inner Harbor 0.86 14 42.6140265685 -70.6485369198 loc. from DES draft data
Summer St. and Saugus River Lynn Saugus River 3.60 25 42.4573841447 -70.9751373303 loc. from DES draft data
254 Lynnway & Pleasant Lynn Lynn Harbor 22.23 25 42.4587622564 -70.9459688337 loc. from DES draft data
180 Lynnway Lynn Lynn Harbor 20.14 11 42.4596331059 -70.9441799068 loc. from DES draft data
Mass Ave. & Alewife Cambridge Alewife Brook 0.13 2 42.401130572 -71.13608329 source: MWRA
97 Camb. Pk Dr. Cambridge Alewife Brook 5.33 10 42.397102022 -71.144062427 source: MWRA
97 Camb. Pk Dr. Cambridge Alewife Brook 1.14 3 42.39564834 -71.143970872 source: MWRA
Mass. Ave & Alewife Bk Cambridge Alewife Brook 14.39 27 42.40088632 -71.136368632 source: MWRA
Matignon Rd. Somerville Alewife Brook 6.52 6 42.402706623 -71.13478564 source: MWRA
Assmbly Sq. & 28 Somerville Upper Mystic 9.24 6 42.398243697 -71.083419244 source: MWRA
150 ft sw of MDC locks Somerville Mystic River 105.16 36 42.394053038 -71.076056756 source: MWRA
bet 338 and S70 E. Eagle St. Boston Chelsea River 0.15 1 42.382306394 -71.026972761 source: MWRA
Corner of Sumner & New Boston Upper Inner Harbor 0.21 2 42.370314582 -71.04412892 source: MWRA
310 Border St. Boston Upper Inner Harbor 0.11 1 42.377807936 -71.042215281 source: MWRA
NW of Tobin Br & 16th Boston Upper Inner Harbor 1.14 1 42.379753064 -71.051688514 source: MWRA
near Pilot Hs Park Boston Upper Inner Harbor 3.60 6 42.364072811 -71.049382869 source: MWRA
Prison Point Boston Upper Inner Harbor 413.76 23 42.368951332 -71.060903405 source: MWRA
SW Corner of Logan Boston Lower Inner Harbor 3.18 5 42.357853629 -71.027748763 source: MWRA
Tomahawk St Boston Lower Inner Harbor 2.40 10 42.36477221 -71.026880425 source: MWRA
Dorchester & Summer Boston Fort Point Channel 0.08 1 42.351336438 -71.05268835 source: MWRA
W. Bank Ft. Pt Chan. Boston Fort Point Channel 1.10 1 42.348681028 -71.054504388 source: MWRA
Int. 90 & 93 Boston Fort Point Channel 0.65 1 42.344980694 -71.059401212 source: MWRA
W. 4th & Frontage Boston Fort Point Channel 37.78 20 42.342858621 -71.060975542 source: MWRA
off Pappas Was Boston Reserved Channel 10.00 27 42.339594272 -71.042009157 source: MWRA
n of E 1st & I Boston Reserved Channel 4.51 16 42.338537265 -71.039996088 source: MWRA
n of Powerhs & Summer Boston Reserved Channel 0.71 10 42.342043141 -71.035628947 source: MWRA
Massport Conway facility off Day Rd. Boston Reserved Channel 0.23 6 42.341787852 -71.025193781 source: MWRA
Day Blvd & Farragut Boston N. Dorchester Bay 0.04 1 42.332530691 -71.025050574 source: MWRA
off Day Blvd Boston N. Dorchester Bay 0.02 1 42.329653769 -71.030294692 source: MWRA
SE of Mt. Aub. Hosp. Cambridge Upper Charles River 1.77 3 42.373600778 -71.132742607 source: MWRA
Hawthorne & Mem. Dr. Cambridge Upper Charles River 2.15 2 42.373242421 -71.126873865 source: MWRA
bridge Cambridge Lower Charles River 2.04 2 42.364648782 -71.076257386 source: MWRA
nr BU Boston Lower Charles River 47.30 6 42.352377043 -71.11114878 source: MWRA
Greenfield Rd. Montague Connecticut River 0.26 13 42.5801316731 -72.5732032373 only 2010 avail.; loc. from DES draft data
Avenue A Montague Connecticut River 0.20 2 42.604325406 -72.5606416421 only 2010 avail.; loc. from DES draft data
Ave. A. Montague Connecticut River 0.04 3 42.604325406 -72.5606416421 only 2010 avail.; loc. from DES draft data
Prov Hospital Holyoke Connecticut River 0.15 22 42.1675235596 -72.6301648958 only 2010 avail.; loc. from DES draft data
Jones Ferry Holyoke Connecticut River 0.10 12 42.1717230563 -72.6297918539 only 2010 avail.; loc. from DES draft data
Northhampton & G Holyoke Connecticut River 1.38 28 42.1861181287 -72.6235953652 only 2010 avail.; loc. from DES draft data
Springdale Holyoke Connecticut River 27.96 50 42.1881515217 -72.6182195128 only 2010 avail.; loc. from DES draft data
Berkshire St Holyoke Connecticut River 31.98 12 42.1899089959 -72.6124873641 only 2010 avail.; loc. from DES draft data
Jackson St. Holyoke Connecticut River 10.19 57 42.1932210058 -72.6061160872 only 2010 avail.; loc. from DES draft data
Appleton St. Holyoke Connecticut River 4.47 37 42.1978387408 -72.5987496453 only 2010 avail.; loc. from DES draft data
Front and Appleton St. Holyoke First Level Canal 0.86 12 42.2036673234 -72.6077878335 only 2010 avail.; loc. from DES draft data
Walnut St. Holyoke Connecticut River 20.30 53 42.2129976651 -72.6094042684 only 2010 avail.; loc. from DES draft data
Essex and Walnut Holyoke Connecticut River 7.63 33 42.214232 -72.606733 approx., loc n/a; 2010 data
Yale St. Holyoke Connecticut River 0.16 22 42.2196074517 -72.6130206149 only 2010 avail.; loc. from DES draft data
Cleveland St. Holyoke Connecticut River 7.51 58 42.2258115844 -72.6175997146 only 2010 avail.; loc. from DES draft data
River Terrace Holyoke Connecticut River 6.63 37 42.2291715182 -72.6238981427 only 2010 avail.; loc. from DES draft data
Jefferson St. Holyoke Dry Dingle 0.70 32 42.2211416321 -72.6237436744 only 2010 avail.; loc. from DES draft data
James St. Chicopee Connecticut River 9.40 34 42.2064010383 -72.5893427979 only 2010 avail.; loc. from DES draft data
River View Chicopee Connecticut River 8.39 20 42.1918716325 -72.6031866886 only 2010 avail.; loc. from DES draft data
Lesley St. Power Station Chicopee Connecticut River 2.56 38 42.1898198886 -72.6068074336 only 2010 avail.; loc. from DES draft data
Call St. PS Chicopee Connecticut River 32.74 36 42.1864821944 -72.6158171576 only 2010 avail.; loc. from DES draft data
Jones Ferry Chicopee Connecticut River 1.48 4 42.1711572475 -72.6269010582 only 2010 avail.; loc. from DES draft data
N. of Jones Ferry Chicopee Connecticut River 0.96 29 42.171891 -72.628027 only 2010 avail., loc. Approx, not avail
Paderewski PS Chicopee Connecticut River 3.93 40 42.1547612842 -72.6259685805 only 2010 avail.; loc. from DES draft data
Leonard and West St. Chicopee Connecticut River 6.69 55 42.142260397 -72.6152696687 only 2010 avail.; loc. from DES draft data
Exchange and Bullns Chicopee Connecticut River 0.01 32 42.143503 -72.616904 approx., loc n/a; 2010 data
Exchange and Depot Chicopee Connecticut River 8.00 42 42.143964 -72.616603 approx., loc n/a; 2010 data
Front and Dept Chicopee Connecticut River 17.23 51 42.1505930173 -72.58578345 only 2010 avail.; loc. from DES draft data
Irene St. Roberts Pond Chicopee Wllmnst Bk. 0.64 15 42.193436 -72.585101 loc. n/a, estimated, 2010 data
Bell and Front St. Chicopee Chicopee River 0.06 15 42.1492377942 -72.5994933362 only 2010 avail.; loc. from DES draft data
Topors Front St. Chicopee Chicopee River 8.40 27 42.1494166825 -72.5967982097 only 2010 avail.; loc. from DES draft data
River View West Chicopee Chicopee River 0.02 6 42.14962 -72.59815 loc n/a; 210 data
Electric Light West Chicopee Chicopee River 0.24 37 42.1486484864 -72.5904931891 approx.; loc n/a 2010 data
Electric Light South Chicopee Chicopee River 5.72 34 42.1486484864 -72.5904931891 only 2010 avail.; loc. from DES draft data
Esmnt Northwest Front Chicopee Chicopee River 21.67 49 42.149835 -72.599738 approx.; loc n/a 2010 data
Grove and Oak St. Chicopee Chicopee River 6.68 30 42.1562115932 -72.5886143916 only 2010 avail.; loc. from DES draft data
Walnut and Broadway Chicopee Chicopee River 4.51 39 42.153637 -72.588623 approx.; loc n/a 2010 data
Broadway and Belcher Chicopee Chicopee River 0.20 39 42.159449 -72.580512 approx.; loc n/a 2010 data
Maple and Belcher Chicopee Chicopee River 0.14 29 42.159347 -72.579117 approx.; loc n/a 2010 data
Church and Walnut Chicopee Chicopee River 0.04 40 42.1595354095 -72.58180982 approx., loc n/a; 2010 data
Grtn and Hrthstn Chicopee Chicopee River 4.54 37 42.1608969898 -72.5863591155 only 2010 avail.
Hrthstn Terrace Chicopee Chicopee River 0.11 16 42.160604 -72.585726 approx., loc n/a; 2010 data
Deady Bridge and Montgomery St. Chicopee Chicopee River 21.49 23 42.160509 -72.584996 approx., loc n/a; 2010 data
East Main St. Chicopee Chicopee River 0.23 26 42.1586594376 -72.5773052694 only 2010 avail.; loc. from DES draft data
Chic St/391 Exit Ramp Chicopee Chicopee River Not Monitored Not Monitored 42.150583 -72.61023 approx., loc n/a; 2010 data
Rowland St. Springfield Connecticut River 31.22 50 42.1188419251 -72.6198047557 only 2010 avail.; loc. from DES draft data
Washburn St. Springfield Connecticut River 132.63 12 42.111896864 -72.615498271 only 2010 avail.; loc. from DES draft data
Clinton St. Springfield Connecticut River 29.41 48 42.1045596662 -72.602371432 only 2010 avail.; loc. from DES draft data
Liberty St. Springfield Connecticut River 16.75 18 42.1034366322 -72.5993050309 only 2010 avail.; loc. from DES draft data
Worthington St. Springfield Connecticut River 141.31 63 42.1017572141 -72.5960356877 only 2010 avail.; loc. from DES draft data
Bridge St. Springfield Connecticut River 51.65 39 42.1010305739 -72.5948141047 only 2010 avail.; loc. from DES draft data
Elm St. Springfield Connecticut River 11.80 32 42.0985504978 -72.5914587078 only 2010 avail.; loc. from DES draft data
Union and Main St. Springfield Connecticut River 24.16 54 42.095707 -72.588859 approx., loc n/a; 2010 data
Union and Columbus St. Springfield Connecticut River 0.85 9 42.0956887722 -72.5884597198 only 2010 avail.; loc. from DES draft data
York St Springfield Connecticut River 0.01 6 42.0900058348 -72.583865494 only 2010 avail.
Long Hill St. Springfield Connecticut River 0.02 8 42.0781748947 -72.580980577 only 2010 avail.
Springfield and Baystate Springfield Connecticut River 40.40 18 42.1188239202 -72.6198044382 only 2010 avail.
SRWTF Bypass Springfield Connecticut River 5.68 10 42.10943 -72.562294 only 2010 avail.;loc. n/a
Main St. and Indian Orchard Springfield Chicopee River 0.74 10 42.1604177925 -72.5097594166 only 2010 avail.
Front and Oak St. Springfield Chicopee River 0.85 17 42.1611751264 -72.5024620127 only 2010 avail.
Pineveil and Water St. Springfield Chicopee River 0.01 1 42.1610205905 -72.50160035 only 2010 avail.
Cedar St. Springfield Chicopee River 0.04 3 42.1606161242 -72.4984233391 only 2010 avail.
Fort Pleasant St. Springfield Mill River 2.38 12 42.0899061766 -72.5772514937 only 2010 avail.
Central St. Springfield Mill River 0.05 14 42.0966561099 -72.5640916186 only 2010 avail.
Allen and Oakland St. Springfield Mill River 0.44 18 42.0968292915 -72.5638648174 only 2010 avail.
Fort Pleasant St. Springfield Mill River 1.14 12 42.0899061766 -72.5772514937 only 2010 avail.
Belmont St. Springfield Mill River 0.17 3 42.0900058864 -72.5771806545 only 2010 avail.
Allen and Rifle St. Springfield Mill River 4.00 12 42.0970541298 -72.5638927623 only 2010 avail.
East Side of Mill St. Bridge Springfield Mill River not monitored Not Monitored 42.0933883812 -72.5698153948 only 2010 avail.
Alton St. Fall River Taunton River 64 42 41.733292 -71.14137 based on model of annual disch.
Cove St. Fall River Taunton River 50 40 41.726663 -71.148975 based on model of annual disch.
President Ave. Fall River Taunton River 71 51 41.716733 -71.158472 based on model of annual disch.
City Pier Fall River Taunton 185 52 41.712056 -71.158492 based on model of annual disch.
Central St. Fall River Taunton 5 38 41.704847 -71.161283 based on model of annual disch.
Canal St. Fall River Taunton 1 2 41.704847 -71.161283 based on model of annual disch.
Ferry St. Fall River Mt Hope Bay 12 8 41.701403 -71.170703 based on model of annual disch.
William St. Fall River Mt Hope Bay 2 2 41.699561 -71.173276 based on model of annual disch.
Middle St. Fall River Mt Hope Bay 14 13 41.696541 -71.180271 based on model of annual disch.
Riverview St. Fall River Mt Hope Bay 16 2 41.69046 -71.185466 based on model of annual disch.
Birch St. Fall River Mt Hope Bay 23 22 41.68663 -71.189736 based on model of annual disch.
Charles St. Fall River Mt Hope Bay 6 2 41.685044 -71.190723 based on model of annual disch.
Mt. Hope Ave. Fall River Mt Hope Bay 21 23 41.679956 -71.19527 based on model of annual disch.
Third St. Fall River Quequechan River 1 4 41.700338 -71.154361 based on model of annual disch.
Plymouth Ae. No. Fall River Quequechan River 26 2 41.696981 -71.149769 based on model of annual disch.
Plymouth Ave. So. Fall River Quequechan River 1 2 41.696645 -71.150381 based on model of annual disch.
Lowell St. Fall River Quequechan River 1 2 41.695187 -71.147441 based on model of annual disch.
Quequechan St. Fall River Quequechan River 1 2 41.688593 -71.139352 based on model of annual disch.
Cove Rd & Padnaram Ave New Bedford Clark’s Cove 15.1 23 41.612827 -70.930098 based on model of annual disch.
Cove & Bonney New Bedford Clark’s Cove 83 20 41.613646 -70.926754 based on model of annual disch.
Dudley & RFB New Bedford Clark’s Cove 5.4 16 41.608464 -70.917653 based on model of annual disch.
Lucas & RFB New Bedford Clark’s Cove 6.4 27 41.604388 -70.915142 based on model of annual disch.
Capital and RFB New Bedford Clark’s Cove 0.4 6 41.603763 -70.915099 based on model of annual disch.
Calumet St & RFB New Bedford Clark’s Cove 1.4 16 41.603256525 -70.9135789367 based on model of annual disch.
Bellevue St & RFB New Bedford Clark’s Cove 2.1 15 41.601115 -70.912996 based on model of annual disch.
Truro St at Acushnet R New Bedford Inner Harbor 26.1 48 41.680356 -70.917393 based on model of annual disch.
Hamlin St. New Bedford Inner Harbor 30.3 38 41.681254 -70.918423 based on model of annual disch.
Hathaway St at Acushnet R New Bedford Inner Harbor 4.6 32 41.666052 -70.918627 based on model of annual disch.
Coffin Ave New Bedford Inner Harbor 54.4 48 41.663086 -70.918146 based on model of annual disch.
Sawyer St at Acushnet R New Bedford Inner Harbor 4.3 44 41.657267 -70.919198 based on model of annual disch.
Belleville Rd at Acushnet R New Bedford Inner Harbor 17.1 38 41.669145 -70.919014 based on model of annual disch.
Hervey Tichon Ave at Bussards bay New Bedford Inner Harbor 40.7 48 41.644873 -70.921365 based on model of annual disch.
Maxfield St at Buzzards Bay New Bedford Inner Harbor 0.5 25 41.643478 -70.921362 based on model of annual disch.
near Ferry Terminal New Bedford Inner Harbor 0.4 5 41.635716 -70.920687 based on model of annual disch.
Homers Wharf New Bedford Inner Harbor 1.9 23 41.632156 -70.920271 based on model of annual disch.
Conway St at Buzzards Bay New Bedford Inner Harbor 31.9 42 41.628243 -70.916387 based on model of annual disch.
South St at Buzzards Bay New Bedford Inner Harbor 17.9 40 41.625789 -70.915078 based on model of annual disch.
Cove & East RFB New Bedford New Bed. Outer Hrbr 9 29 41.617047 -70.913061 based on model of annual disch.
David St & RFB New Bedford New Bed. Outer Hrbr 11.2 37 41.613662 -70.90834 based on model of annual disch.
Frederick St & RFB New Bedford New Bed. Outer Hrbr 0.1 8 41.611015 -70.906066 based on model of annual disch.
Butler St. & RFB New Bedford New Bed. Outer Hrbr 1.1 9 41.60925 -70.90454 based on model of annual disch.
Aquidneck & RFB New Bedford New Bed. Outer Hrbr 0 1 41.6041 -70.902427 based on model of annual disch.
Ricketson & RFB New Bedford New Bed. Outer Hrbr 1.2 9 41.602932 -70.902002 based on model of annual disch.