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Home > Projects > CRWA Baseline Water Quality Monitoring
CRWA Baseline Water Quality Monitoring
Charles River Volunteer Monthly Water Quality Sampling Data
Escherichia Coli (E. coli) Bacteria (#/100 mL)
Site # |
Site Description |
Town |
River mile |
1/11/11 |
3/15/11 |
4/12/11 |
5/17/11 |
6/21/11 |
7/19/11 |
8/16/11 |
9/20/11 |
10/18/11 |
11/15/11 |
12/20/11 |
1/10/12 |
| 35CS |
Central Street Bridge |
Milford |
3.5 |
189 |
<10 |
175 |
288 |
399 |
404 |
292 |
20 |
98 |
74 |
41 |
669 |
| 35CD |
Discharge Pipe,
Central St |
Milford |
3.5 |
ND |
ND |
ND |
ND |
ND |
ND |
ND |
ND |
ND |
ND |
ND |
ND |
| 35C2 |
2nd Discharge Pipe,
Central St |
Milford |
3.5 |
ND |
ND |
ND |
ND |
ND |
ND |
ND |
ND |
ND |
ND |
ND |
ND |
| 59CS |
Mellen St. Bridge |
Bellingham/Milford
/Hopedale |
5.9 |
256 |
ND |
121 |
305 |
464 |
275 |
709 |
62 |
148 |
1660 |
689 |
63 |
| 90CS |
Rt. 126, N. Main St. |
Bellingham |
9.0 |
74 |
86 |
31 |
98 |
85 |
ND |
336 |
41 |
31 |
243 |
41 |
10 |
| 130S |
Maple St. Bridge |
Bellingham |
12.9 |
ND |
20 |
10 |
272 |
63 |
259 |
809 |
20 |
63 |
31 |
20 |
10 |
| 165S |
Shaw St./Elm St. Bridge |
Franklin/Medway |
16.5 |
51 |
20 |
10 |
379 |
2260 |
471 |
3260 |
52 |
41 |
52 |
52 |
41 |
| 199S |
Populatic Pond
Boat Launch |
Norfolk |
19.9 |
ND(a) |
ND |
10 |
98 |
84 |
2910 |
2060 |
10 |
74 |
31 |
ND |
ND |
| 229S |
Rt. 115, Baltimore St. |
Millis |
22.9 |
ND(a) |
ND(a) |
ND(a) |
ND(a) |
132 |
ND |
318 |
74 |
41 |
31 |
364 |
63 |
| 267S |
Dwight St. Bridge |
Millis/Medfield |
26.7 |
63 |
<10 |
<10 |
74 |
223 |
189 |
857 |
52 |
146 |
20 |
231 |
ND |
| 269T |
Causeway St./Stop River |
Medfield |
26.9 |
10 |
<10 |
31 |
213 |
107 |
41 |
309 |
31 |
74 |
<10 |
<10 |
<10 |
| 290S |
West St./Dover Rd. |
Millis/Medfield |
29.0 |
20 |
<10 |
30 |
98 |
52 |
41 |
497 |
30 |
74 |
20 |
187 |
295 |
| 318S |
Rt. 27 Bridge |
Medfield/Sherborn |
31.8 |
ND |
<10 |
<10 |
86 |
146 |
74 |
265 |
<10 |
109 |
20 |
231 |
41 |
| 343S |
Farm Rd./Bridge St. |
Sherborn/Dover |
34.3 |
31 |
<10 |
30 |
108 |
294 |
52 |
173 |
20 |
41 |
31 |
240 |
107 |
| 387S |
Elm Bank/Cheney
Dr. Bridge |
Wellesley/Dover |
38.7 |
10 |
31 |
10 |
85 |
161 |
265 |
ND |
31 |
63 |
31 |
187 |
135 |
| 400S |
Charles River
Road Bridge |
Dover/Needham |
40.0 |
20 |
20 |
<10 |
63 |
74 |
97 |
613 |
41 |
85 |
<10 |
121 |
52 |
| 447S |
Dover Gage, Mill St. |
Dover/Needham |
44.7 |
ND(a) |
ND |
74 |
86 |
135 |
41 |
537 |
30 |
20 |
30 |
ND |
ND |
| 484S |
Greendale Ave/
Lyons St. Bridge |
Dedham/Needham |
48.4 |
10 |
<10 |
31 |
74 |
118 |
109 |
743 |
31 |
63 |
10 |
74 |
30 |
| 521S |
Ames St. Bridge |
Dedham |
52.1 |
ND(a) |
ND(a) |
ND(a) |
ND(a) |
ND(a) |
ND(a) |
ND(a) |
ND(a) |
ND(a) |
ND(a) |
73 |
10 |
| 534S |
Rt. 109 Bridge |
Dedham/Boston |
53.4 |
10 |
31 |
20 |
231 |
120 |
110 |
809 |
52 |
86 |
63 |
52 |
31 |
| 567S |
Nahanton Park |
Newton/Needham |
56.7 |
31 |
<10 |
171 |
216 |
52 |
<10 |
1080 |
10 |
98 |
20 |
98 |
10 |
| 591S |
Rt. 9 Gaging Station |
Newton |
59.1 |
109 |
<10 |
ND |
218 |
201 |
74 |
723 |
63 |
108 |
63 |
52 |
20 |
| 609S |
Washington St.
Hunnewell Bridge |
Wellesley/Newton |
60.9 |
<10 |
20 |
10 |
189 |
122 |
141 |
813 |
41 |
98 |
ND |
74 |
<10 |
| 621S |
Leo J. Martin Golf
Course/Park Rd. |
Weston/Newton |
62.1 |
20 |
20 |
63 |
185 |
201 |
201 |
4610 |
20 |
74 |
20 |
10 |
20 |
| 635S |
2391 Common-
wealth Ave. |
Newton |
63.5 |
ND |
31 |
41 |
146 |
199 |
156 |
1720 |
158 |
ND |
20 |
73 |
10 |
| 648S |
Auburndale Park,
Lakes Region |
Waltham |
64.8 |
ND(a) |
ND |
ND |
109 |
109 |
52 |
1110 |
51 |
52 |
ND |
ND |
ND |
| 662S |
Moody St. Bridge |
Waltham |
66.2 |
41 |
98 |
85 |
203 |
121 |
31 |
839 |
<10 |
74 |
52 |
31 |
10 |
| 675S |
North St. Bridge |
Waltham/
Watertown/
Newton |
67.6 |
85 |
63 |
96 |
189 |
223 |
228 |
985 |
63 |
52 |
41 |
74 |
41 |
| 012S |
Watertown Dam
Footbridge |
Watertown |
69.3 |
98 |
97 |
20 |
305 |
ND |
218 |
743 |
20 |
74 |
31 |
41 |
158 |
| 700S |
N. Beacon St. Bridge |
Watertown/Brighton |
70.9 |
ND |
ND |
74 |
317 |
327 |
134 |
1330 |
110 |
84 |
52 |
63 |
171 |
| 715S |
Arsenal St. Bridge |
Watertown/Brighton |
71.5 |
120 |
109 |
110 |
419 |
132 |
52 |
1990 |
213 |
131 |
52 |
74 |
487 |
| 729S |
Eliot St. Bridge |
Cambridge/
Boston-Allston |
72.9 |
74 |
109 |
86 |
1140 |
132 |
98 |
3870 |
211 |
175 |
96 |
120 |
345 |
| 743S |
Western Ave Bridge |
Cambridge/
Boston-Allston |
74.3 |
ND(e) |
175 |
98 |
488 |
<10 |
20 |
2480 |
583 |
278 |
203 |
158 |
189 |
| 760T |
Muddy River at
Commonwealth Ave. |
Boston |
76.0 |
ND |
1670 |
2600 |
5790 |
175 |
413 |
7270 |
134 |
2310 |
472 |
109 |
84 |
| 763S |
Mass. Ave.
(Harvard) Bridge |
Boston/Cambridge |
76.3 |
644 |
85 |
171 |
618 |
74 |
31 |
609 |
10 |
86 |
161 |
156 |
86 |
| 773S |
Longfellow Bridge |
Cambridge/Boston |
77.3 |
ND |
85 |
96 |
132 |
20 |
10 |
63 |
63 |
197 |
120 |
143 |
63 |
| 784S |
New Charles River Dam |
Boston |
78.4 |
160 |
110 |
<10 |
86 |
20 |
<10 |
52 |
52 |
74 |
143 |
108 |
20 |
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| Rainfall At Logan International Airport (inches) |
|
WET(d) |
DRY |
DRY |
WET |
DRY |
DRY |
WET |
DRY |
DRY |
DRY |
DRY |
DRY |
| 3 Days Prior to Sampling |
0.16 |
0.00 |
0.00 |
0.01 |
0.07 |
0.00 |
0.00 |
0.00 |
Trace |
0.00 |
0.00 |
0.00 |
| 2 Days Prior to Sampling |
0.13 |
Trace |
0.04 |
1.07 |
0.00 |
0.00 |
0.02 |
0.00 |
Trace |
0.00 |
Trace |
0.00 |
| 1 Day Prior to Sampling |
0.00 |
Trace |
0.01 |
0.38 |
0.00 |
Trace |
1.43 |
0.00 |
Trace |
Trace |
0.00 |
0.00 |
| Day of Sampling |
0.00 |
0.00 |
0.00 |
0.18 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
Trace |
0.00 |
Trace |
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Samples are analyzed at MWRA Central Laboratory.
As of January 2010, we are no longer reporting on the average of duplicates. Duplicates will only be used for quality control purposes.
(a) Sampling site currently suspended
(b) Rain fell during sampling event
(c) Snowfall at Logan International Airport (inches): 3 days prior = 0; 2 days prior = trace; 1 day prior = 2.6 inches; day of sampling = 0.1 inches
(d) Snowfall at Logan International Airport (inches): 3 days prior = 1.9 inches; 2 days prior = 1.6 inches; 1 day prior = 0; day of sampling = 0
(e) Lab error - sample was not processed
ND=No data collected
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