Appendix C Mwra Data Summaries

APPENDIX C – MWRA DATA SUMMARIES 2002-2008

Data excerpts are provided below for MWRA stations that fell within the boundaries of the DWM segments in this water quality assessment report. MWRA data were accessed online (MWRA 2008). Data were copied into excel spreadsheets and analyzed using pivot tables to summarize results. The following abbreviations are used in the tables: Count or n = number of measurements, Min = minimum, Max = maximum, Avg = average.

Reference: MWRA. 2008. Raw Water Quality Data from the Harbor and Tributaries Monitoring Program. Massachusetts Water Resources Authority. Boston, MA. Accessed online on 23 March 2010. http://www.mwra.state.ma.us/harbor/html/nr_wq.htm#data.

Data summaries are organized by segment, sampling station location information, surface and bottom dissolved oxygen (DO) and DO saturation measurements, total nitrogen and phosphorus and chlorophyll a concentrations, geometric means of Enterococci bacteria data for surface water samples for both the primary and secondary contact recreational seasons by year, and lastly depth, Secchi disk depth, surface and bottom total suspended solids (TSS) data.

Winthrop Bay (Segment MA70-10): From the tidal flats at Coleridge Street, Boston (East Boston) to a line between Logan International Airport and Point Shirley, Boston/Winthrop.

MWRA has conducted water quality monitoring at one station in Winthrop Bay between 2002 and 2008 as part of two studies. A brief description of this site is provided below:

MWRA Study / Station ID / Location Description
CSORWM and BHWQM / 130 / WINTHROP HARBOR, GREEN CAN #1
Segment / MA70-10 / Dissolved Oxygen (mg/L) / DO Saturation (%)
Station ID / Year / Surface or Bottom / n / Min / Max / # measurements < Standard (i.e., # violations) / Min(%) / Max (%) / # measurements >110%
130 / 2002 / B / 34 / 6.29 / 11.45 / 0 / 75.5 / 110.3 / 1
S / 37 / 6.3 / 14.65 / 0 / 78.6 / 116.6 / 1
2003 / B / 30 / 6.77 / 11.69 / 0 / 71.9 / 104.9 / 0
S / 31 / 6.84 / 11.86 / 0 / 78.6 / 109.5 / 0
2004 / B / 24 / 6.17 / 11.98 / 0 / 73.8 / 109.2 / 0
S / 24 / 6.28 / 11.77 / 0 / 79.5 / 112.7 / 2
2005 / B / 23 / 6.48 / 11.73 / 0 / 68.7 / 107 / 0
S / 23 / 6.61 / 11.81 / 0 / 70.3 / 113.4 / 1
2006 / B / 30 / 6.37 / 10.94 / 0 / 80.1 / 101.4 / 0
S / 30 / 6.56 / 11 / 0 / 81.1 / 107.7 / 0
2007 / B / 22 / 7.03 / 10 / 0 / 79 / 100.7 / 0
S / 22 / 7.18 / 10.09 / 0 / 80.5 / 101.3 / 0
2008 / B / 20 / 5.95 / 8.99 / 0 / 78.3 / 97.7 / 0
S / 20 / 6.29 / 8.92 / 0 / 82.9 / 98.4 / 0
Grand Total / 370 / 5.95 / 14.65 / 0 / 68.7 / 116.6 / 5
Segment / MA70-10 / Total Nitrogen (mg/L) / Total Phosphorus (mg/L) / Chlorophyl a (µg/L)
Station ID / Year / Surface or Bottom / Count / Min / Max / Avg / Count / Min / Max / Avg / Count / Min / Max / Avg
130 / 2002 / S / 39 / 0.203 / 0.574 / 0.289 / 39 / 0.028 / 0.085 / 0.047 / 39 / 0.84 / 16.40 / 5.14
B / 39 / 1.13 / 17.80 / 5.50
2003 / S / 33 / 0.184 / 0.394 / 0.269 / 33 / 0.024 / 0.083 / 0.040 / 33 / 1.37 / 9.82 / 4.30
B / 33 / 1.28 / 11.80 / 3.98
2004 / S / 25 / 0.130 / 0.404 / 0.257 / 25 / 0.031 / 0.084 / 0.049 / 25 / 0.48 / 13.30 / 3.80
B / 25 / 0.50 / 8.10 / 3.64
2005 / S / 22 / 0.053 / 0.388 / 0.267 / 22 / 0.015 / 0.054 / 0.036 / 22 / 0.31 / 4.52 / 2.25
B / 22 / 0.29 / 5.19 / 2.44
2006 / S / 6 / 0.130 / 0.445 / 0.299 / 6 / 0.018 / 0.045 / 0.032 / 6 / 0.20 / 3.95 / 1.20
B / 6 / 0.67 / 4.39 / 1.47
2008 / S / 1 / 0.316 / 0.316 / 0.316 / 1 / 0.053 / 0.053 / 0.053 / 1 / 2.88 / 2.88 / 2.88
Grand Total / 126 / 0.053 / 0.574 / 0.274 / 126 / 0.015 / 0.085 / 0.043 / 251 / 0.20 / 17.80 / 3.97
Segment / MA70-10 / Primary Contact Season Enterococci
bacteria data summary
(samples collected 1 April to 15 October) / Secondary Contact Season Enterococci
bacteria data summary
(samples collected all year)
Station ID / Year / Surface or Bottom sample / Count / Geometric mean Enterococci (#/100 mL) / Count / Geometric mean Enterococci (#/100 mL)
130 / 2002 / S / 28 / 6 / 39 / 6
2003 / S / 17 / 5 / 26 / 5
2004 / S / 15 / 5 / 25 / 5
2005 / S / 12 / 5 / 22 / 5
2006 / S / 16 / 8 / 30 / 8
2007 / S / 16 / 10 / 22 / 10
2008 / S / 19 / 17 / 21 / 17
Segment / MA70-10 / Depth (m) / Secchi (m) / Surface TSS (mg/L) / Bottom TSS (mg/L)
Station ID / Year / Count / Min / Max / Min / Max / # measurements < 1.2m / Count / Min / Max / Avg / Count / Min / Max / Avg
130 / 2002 / 38 / 4.8 / 8.6 / 1.1 / 4.0 / 1 / 38 / 1.29 / 9.05 / 4.6 / 36 / 1.57 / 12.7 / 5.3
2003 / 34 / 4.4 / 8.6 / 1.3 / 3.7 / 0 / 34 / 1.44 / 5.75 / 3.4 / 34 / 1.8 / 12.2 / 5.7
2004 / 25 / 5.5 / 8.6 / 1.2 / 6.3 / 0 / 25 / 0.39 / 6.8 / 3.1 / 25 / 0.67 / 10.1 / 4.3
2005 / 22 / 4.9 / 8.6 / 1.1 / 3.4 / 1 / 22 / 1.53 / 6.42 / 3.7 / 22 / 1.5 / 8.52 / 4.9
2006 / 30 / 5.0 / 8.7 / 1.5 / 3.8 / 0 / 6 / 0.43 / 2.92 / 1.9 / 6 / 1.75 / 4.04 / 2.7
2008 / 21 / 4.2 / 7.8 / 1.1 / 3.0 / 1
Grand Total / 170 / 4.2 / 8.7 / 1.1 / 6.3 / 3 / 3 / 0.39 / 9.05 / 3.7 / 123 / 0.67 / 12.7 / 5.0

Boston Inner Harbor (Segment MA70-02): From the Mystic and Chelsea rivers, Chelsea/Boston, to the line between Governors Island and Fort Independence, Boston (East Boston) (including Fort Point, Reserved and Little Mystic channels).

MWRA has conducted water quality monitoring at eight stations in Boston Inner Harbor between 2002 and 2008. A brief description of these sites ordered from the most inward area and proceeding out is provided below:

MWRA Study / Station ID / Location Description / Sampling Depth Range (m)
CSORWM / 015 / INNER, CONFL MYSTIC/CHELSEA R / 9.8 – 16.6
CSORWM / 014 / INNER, MOUTH CHARLES, C.G. BASE / 9.5 - 13.1
BHWQM / 138 / INNER HARBOR; OFF NEW ENGLAND AQUARIUM / 6.5 – 12.5
CSORWM / 019 / INNER,OFF MOUTH OF FORT PT. CHNL / 5.9 – 11.7
CSORWM / 075 / INNER, FORT PT. CHNL @ BROADWAY / 0.8 – 3.1
CSORWM / 018 / INNER, FORT PT. CHNL @ SUMMER ST / 10.4 – 10.7
CSORWM / 022 / INNER,RESERVED CHANNEL IN MIDDLE / 9.0 – 16.5
CSORWM, BHWQM / 024 / INNER, MOUTH OF HARBOR, R.BUOY10 / 6.2 – 16.4
Segment / MA70-02 / Dissolved Oxygen (mg/L) / Dissolved Oxygen Saturation (%)
Station ID / Year / Surface or Bottom / n / Min / Max / # measurements < Standard (i.e., # violations) / Min(%) / Max (%) / # measurements >110%
014 / 2002 / B / 23 / 5.88 / 10.01 / 0 / 65.6 / 98.7 / 0
S / 25 / 5.93 / 13.04 / 0 / 63.7 / 100.2 / 0
2003 / B / 21 / 5.83 / 9.76 / 0 / 64 / 99.5 / 0
S / 21 / 6.49 / 10.37 / 0 / 76.9 / 99.7 / 0
2004 / B / 20 / 6.43 / 9.09 / 0 / 76.7 / 98.4 / 0
S / 20 / 6.23 / 8.77 / 0 / 78.3 / 99.2 / 0
2005 / B / 22 / 5.4 / 10.76 / 0 / 66.8 / 108.3 / 0
S / 24 / 5.81 / 9.84 / 0 / 75.1 / 102 / 0
2006 / B / 23 / 5.72 / 8.65 / 0 / 69.4 / 101.3 / 0
S / 24 / 5.35 / 9.17 / 0 / 64.6 / 93.9 / 0
2007 / B / 21 / 5.81 / 8.73 / 0 / 68.6 / 92.2 / 0
S / 21 / 5.62 / 9.33 / 0 / 66.5 / 105.4 / 0
2008 / B / 18 / 5.18 / 9.88 / 0 / 66.3 / 105.6 / 0
S / 20 / 5.77 / 10.03 / 0 / 70.2 / 111.6 / 1
015 / 2002 / B / 17 / 6.34 / 9.85 / 0 / 79 / 98 / 0
S / 20 / 6.05 / 13.02 / 0 / 79.1 / 105.4 / 0
2003 / B / 18 / 6.06 / 9.61 / 0 / 73.5 / 97.5 / 0
S / 18 / 6.43 / 10.71 / 0 / 79.2 / 120.8 / 1
2004 / B / 21 / 6.45 / 9.07 / 0 / 78.5 / 100.4 / 0
S / 21 / 6.88 / 11.15 / 0 / 82 / 143.3 / 5
2005 / B / 22 / 5.41 / 9.95 / 0 / 66.5 / 97.4 / 0
S / 24 / 6.14 / 10.43 / 0 / 76.3 / 117.6 / 2
2006 / B / 22 / 5.46 / 8.69 / 0 / 66.7 / 101.7 / 0
S / 23 / 6.19 / 10.71 / 0 / 72.5 / 127.7 / 3
2007 / B / 20 / 5.76 / 8.82 / 0 / 70 / 90.6 / 0
S / 21 / 6.21 / 9.27 / 0 / 74.4 / 123.9 / 3
2008 / B / 18 / 5.2 / 9.66 / 0 / 66.7 / 103.4 / 0
S / 20 / 6.21 / 10.39 / 0 / 74.1 / 120.7 / 2
018 / 2002 / B / 20 / 5.38 / 9.83 / 0 / 64.2 / 96.5 / 0
S / 21 / 5.44 / 13.37 / 0 / 63.4 / 101.6 / 0
2003 / B / 18 / 5.82 / 9.4 / 0 / 74.3 / 96.3 / 0
S / 18 / 5.36 / 9.78 / 0 / 68.6 / 94.5 / 0
2004 / B / 41 / 5.51 / 10.34 / 0 / 71.2 / 107 / 0
S / 43 / 5.21 / 10.32 / 0 / 69.6 / 107.6 / 0
2005 / B / 26 / 3.45 / 11.79 / 2 / 42.4 / 115.9 / 1
S / 28 / 5.34 / 12.09 / 0 / 68.6 / 107.6 / 0
2006 / B / 39 / 4.83 / 11.08 / 1 / 52.2 / 106.6 / 0
S / 40 / 5.17 / 11.5 / 0 / 66 / 108.5 / 0
2007 / B / 41 / 4.29 / 12.04 / 1 / 55.1 / 116.7 / 1
S / 42 / 5.59 / 14.14 / 0 / 67.4 / 133.7 / 3
2008 / B / 40 / 3.72 / 12.4 / 3 / 48.3 / 123.4 / 1
S / 42 / 4.95 / 12.34 / 1 / 63.4 / 120.2 / 3
019 / 2002 / B / 21 / 5.95 / 10.26 / 0 / 66.4 / 100.1 / 0
S / 24 / 5.75 / 13.41 / 0 / 64.6 / 102.9 / 0
2003 / B / 21 / 6.55 / 9.78 / 0 / 77.9 / 99.6 / 0
S / 21 / 6.61 / 10.2 / 0 / 78.5 / 98.7 / 0
2004 / B / 24 / 6.44 / 9.25 / 0 / 78.4 / 93.9 / 0
S / 23 / 6.35 / 9.03 / 0 / 79.8 / 109 / 0
2005 / B / 24 / 6.28 / 10.24 / 0 / 74.6 / 100.8 / 0
S / 25 / 6.25 / 10.29 / 0 / 75.9 / 114.1 / 1
2006 / B / 33 / 5.96 / 10.02 / 0 / 72.4 / 110.3 / 1
S / 33 / 6.09 / 10.27 / 0 / 73.5 / 118.3 / 2
2007 / B / 34 / 5.89 / 12.76 / 0 / 69.8 / 157.8 / 2
S / 34 / 6.15 / 13.1 / 0 / 74 / 163.1 / 3
2008 / B / 35 / 5.4 / 10.2 / 0 / 68.9 / 108.9 / 0
S / 35 / 5.91 / 10.72 / 0 / 70.7 / 116.2 / 4
022 / 2002 / B / 25 / 6.34 / 11.65 / 0 / 70.4 / 109.1 / 0
S / 27 / 6.53 / 14.29 / 0 / 72 / 110.9 / 1
2003 / B / 22 / 6.56 / 10.79 / 0 / 74.7 / 105.7 / 0
S / 22 / 6.94 / 10.72 / 0 / 82.2 / 120.4 / 1
2004 / B / 31 / 5.98 / 9.86 / 0 / 72.4 / 98.7 / 0
S / 31 / 6.31 / 9.8 / 0 / 82.5 / 112.8 / 1
2005 / B / 30 / 6.21 / 11.36 / 0 / 74.5 / 105.6 / 0
S / 31 / 6.46 / 11.82 / 0 / 78.4 / 112.8 / 1
2006 / B / 27 / 6.04 / 9.8 / 0 / 69.9 / 102.3 / 0
S / 27 / 6.33 / 10.06 / 0 / 74.6 / 118 / 1
2007 / B / 21 / 5.57 / 8.64 / 0 / 65.7 / 94.2 / 0
S / 21 / 6.33 / 9.42 / 0 / 76.7 / 117.2 / 3
2008 / B / 19 / 5.82 / 9.89 / 0 / 72.3 / 105.2 / 0
S / 20 / 5.8 / 10.7 / 0 / 74.4 / 118.9 / 4
024 / 2002 / B / 54 / 6.74 / 11.75 / 0 / 74.1 / 109.9 / 0
S / 63 / 6.64 / 14.42 / 0 / 73.7 / 111.4 / 3
2003 / B / 55 / 6.94 / 12.1 / 0 / 72.4 / 112.1 / 1
S / 55 / 6.53 / 12.84 / 0 / 80.3 / 114.5 / 4
2004 / B / 52 / 7.05 / 11.79 / 0 / 80.6 / 108.5 / 0
S / 54 / 6.82 / 12.1 / 0 / 81.2 / 117.9 / 4
2005 / B / 44 / 6.32 / 10.87 / 0 / 68 / 108 / 0
S / 51 / 6.41 / 12.12 / 0 / 68 / 113 / 4
2006 / B / 45 / 6.52 / 10.54 / 0 / 75.5 / 118.6 / 1
S / 50 / 6.54 / 11.62 / 0 / 76.7 / 122.7 / 5
2007 / B / 40 / 6.17 / 10.4 / 0 / 73.5 / 102.3 / 0
S / 46 / 6.85 / 11.01 / 0 / 81 / 112.4 / 3
2008 / B / 40 / 5.34 / 10.88 / 0 / 69 / 112.8 / 1
S / 50 / 6.14 / 11.04 / 0 / 77.7 / 115.6 / 3
075 / 2003 / B / 20 / 4.37 / 9.1 / 1 / 55.2 / 105.4 / 0
S / 20 / 3.72 / 10.15 / 3 / 43 / 115.1 / 1
2004 / B / 32 / 4.16 / 9.15 / 3 / 52.8 / 99.8 / 0
S / 34 / 3.75 / 9.78 / 6 / 45.8 / 103.6 / 0
2005 / B / 9 / 2.92 / 11.42 / 2 / 37.5 / 107 / 0
S / 9 / 2.47 / 11.05 / 3 / 31.5 / 100.2 / 0
2006 / B / 19 / 3.54 / 9.88 / 3 / 45.5 / 102 / 0
S / 20 / 3.98 / 10.69 / 4 / 50.4 / 99.1 / 0
2007 / B / 21 / 4.13 / 10.94 / 2 / 48.2 / 108.5 / 0
S / 21 / 4.26 / 10.99 / 3 / 48.7 / 105.7 / 0
2008 / B / 37 / 2.01 / 11.07 / 16 / 26.4 / 114.2 / 1
S / 38 / 2.62 / 12.76 / 14 / 34.5 / 113.8 / 1
138 / 2002 / B / 33 / 5.99 / 10.62 / 0 / 77.6 / 101.7 / 0
S / 37 / 6.65 / 13.88 / 0 / 79.6 / 110.5 / 1
2003 / B / 35 / 5.98 / 12.12 / 0 / 68.9 / 105.1 / 0
S / 35 / 6.18 / 13.23 / 0 / 77.3 / 111.5 / 1
2004 / B / 24 / 6.7 / 11.96 / 0 / 80.3 / 109.4 / 0
S / 24 / 6.53 / 12.21 / 0 / 79 / 110 / 0
2005 / B / 24 / 6.03 / 11.51 / 0 / 64.9 / 104.2 / 0
S / 24 / 6.07 / 12.11 / 0 / 67 / 108.1 / 0
2006 / B / 24 / 6.07 / 10.88 / 0 / 76.6 / 103.2 / 0
S / 25 / 6.37 / 11.59 / 0 / 77.6 / 109.6 / 0
2007 / B / 22 / 6.76 / 10.35 / 0 / 79.9 / 94.1 / 0
S / 21 / 6.73 / 11.08 / 0 / 80.3 / 106 / 0
2008 / B / 24 / 4.82 / 10.69 / 1 / 62.7 / 100.7 / 0
S / 24 / 5.17 / 11.04 / 0 / 67.4 / 100.9 / 0
Grand Total / 3143 / 2.01 / 14.42 / 69 / 26.4 / 163.1 / 85
Segment / MA70-02 / Total Nitrogen (mg/L) / Total Phosphorus (mg/L) / Chlorophyl a (µg/L)
Station ID / Year / Surface or Bottom / Count / Min / Max / Avg / Count / Min / Max / Avg / Count / Min / Max / Avg
024 / 2002 / S / 39 / 0.222 / 0.554 / 0.334 / 39 / 0.030 / 0.079 / 0.049 / 39 / 1.09 / 15.60 / 5.23
B / 39 / 1.64 / 20.20 / 5.13
2003 / S / 38 / 0.060 / 0.486 / 0.307 / 38 / 0.018 / 0.055 / 0.039 / 38 / 0.80 / 14.20 / 4.37
B / 38 / 1.32 / 20.90 / 4.33
2004 / S / 25 / 0.195 / 0.443 / 0.293 / 25 / 0.034 / 0.101 / 0.055 / 25 / 0.48 / 11.80 / 3.80
B / 25 / 0.51 / 8.74 / 3.06
2005 / S / 23 / 0.195 / 0.508 / 0.341 / 23 / 0.020 / 0.071 / 0.038 / 23 / 0.32 / 6.23 / 2.46
B / 23 / 0.41 / 6.73 / 2.30
2006 / S / 24 / 0.135 / 0.502 / 0.299 / 24 / 0.019 / 0.054 / 0.036 / 24 / 0.36 / 11.40 / 2.87
B / 23 / 0.47 / 11.10 / 2.48
2007 / S / 23 / 0.046 / 0.485 / 0.328 / 23 / 0.012 / 0.056 / 0.037 / 23 / 0.49 / 9.28 / 3.54
B / 23 / 0.69 / 10.60 / 3.79
2008 / S / 23 / 0.226 / 0.682 / 0.402 / 23 / 0.019 / 0.059 / 0.042 / 23 / 0.48 / 9.75 / 3.21
B / 23 / 0.62 / 12.90 / 2.67
138 / 2002 / S / 38 / 0.251 / 0.634 / 0.405 / 38 / 0.036 / 0.081 / 0.056 / 38 / 0.72 / 20.10 / 4.70
B / 39 / 1.42 / 24.70 / 4.98
2003 / S / 37 / 0.222 / 0.611 / 0.386 / 37 / 0.027 / 0.065 / 0.042 / 37 / 0.65 / 9.92 / 3.91
B / 37 / 1.15 / 31.60 / 4.42
2004 / S / 25 / 0.230 / 0.677 / 0.381 / 25 / 0.041 / 0.087 / 0.057 / 25 / 0.32 / 18.40 / 4.44
B / 25 / 0.52 / 13.10 / 3.34
2005 / S / 23 / 0.224 / 0.612 / 0.412 / 23 / 0.019 / 0.067 / 0.041 / 23 / 0.24 / 5.90 / 2.47
B / 23 / 0.37 / 8.74 / 1.89
2006 / S / 24 / 0.194 / 0.858 / 0.384 / 24 / 0.022 / 0.058 / 0.037 / 24 / 0.24 / 11.90 / 2.75
B / 24 / 0.39 / 13.60 / 2.43