Open PDF File, 9.54 MB, for Taunton River Watershed 2001 Water
Total Page:16
File Type:pdf, Size:1020Kb
MATFIELD RIVER SUBWATERSHED The Matfield River and its tributaries drain 77 square miles of the northeast portion of the Taunton River Basin. This subwatershed contains some of the most densely developed areas of the state. The following segments are included in the Matfield River subwatershed (Figure 9): Lovett Brook (Segment MA62-46) Salisbury Brook (Segment MA62-08) Trout Brook (Segment MA62-07) Salisbury Plain River (Segment MA62-05) Salisbury Plain River (Segment MA62-06) Beaver Brook (Segment MA62-09) Meadow Brook (Segment MA62-38) Shumatuscacant River (Segment MA62-33) Poor Meadow Brook (Segment MA62-34) Satucket River (Segment MA62-10) Matfield River (Segment MA62-32) In the northwest section of this subwatershed, Lovett Brook has its headwaters in Brockton and flows south joining Salisbury Brook. Salisbury Brook continues in a southeast direction joining with Trout Brook near downtown Brockton to form the Salisbury Plain River. The Salisbury Plain River flows in a southerly direction through highly urbanized portions of Brockton before heading east to form the Matfield River at its confluence with Beaver Brook in East Bridgewater. Meadow Brook has its origins in Whitman and joins the Matfield River in East Bridgewater. The northeastern section of the Matfield River subwatershed is drained by the 8.5-mile Shumatuscacant River, which runs through the towns of Abington and Whitman and joins Poor Meadow Brook in Hanson. Poor Meadow Brook then flow south westerly to Robbins Pond. The Satucket River originates in Robbins Pond in Bridgewater and meanders in a generally westerly direction before joining the Matfield River in East Bridgewater. The land use in the western portion of the Matfield River subwatershed (Lovett, Salisbury, and Trout Brooks and Salisbury Plain River) is primarily residential followed by forest and some commercial and open space areas. This portion of the Matfield River contains some of the highest concentration of impervious area in the Taunton River watershed with impervious cover values all greater than 25.6%. This indicates that there is the potential for water quality to be impacted by impervious surface water runoff. In the central and eastern portions of the Matfield River Subwatershed (Beaver, Meadow and Poor Meadow Brooks and Shumatuscacant, Satucket and Matfield Rivers) the dominant land use is forest followed by residential and some open area. This includes 1008 acres of land which are classified in the Land-Use theme as cranberry bog (UMass Amherst 1999). The impervious area values are all less than 12.8% indicating there is a low to moderate potential for adverse water quality impacts from impervious surface water runoff. Of the eleven segments in the Matfield subwatershed, five are on the Massachusetts Year 2002 Integrated List of Waters – Category 5 for not meeting Water Quality Criteria. There is one site, the East Bridgewater Murray-Carver Landfill, in the Satucket River segment awaiting a NPL decision. Of the eleven facilities permitted under the WMA, seven are municipal public water supply sources. Authorized surface and groundwater withdrawals total 10.56 MGD. Water use for the cranberry bog areas in the Matfield and Satucket River segments is considerably more, estimated at 17.74 MGD (UMass Amherst 1999). There are four minor NPDES permitted facilities in this subwatershed and one major municipal wastewater discharge facility, the Brockton Advanced Water Reclamation Facility which receives wastewater from approximately 20 industrial users. Low dissolved oxygen/saturation and elevated total phosphorus concentrations instream are associated with the Brockton Advanced Water Reclamation Facility discharge. Both acute and chronic toxicity in the effluent are also of concern impacting the Taunton River Watershed 2001 Water Quality Assessment Report 71 62wqar.doc DWM CN 94.0 Salisbury Plain and Matfield Rivers. Additionally, numerous Multi-sector General Stormwater Permits have been issued for facilities in this subwatershed. The communities of Bridgewater, East Bridgewater, West Bridgewater, Whitman, Hanson, Abington, Brockton, Avon, Stoughton and Holbrook are Phase II stormwater communities. Each community was issued a stormwater general permit from EPA and MassDEP in 2003/2004 and is authorized to discharge stormwater from their municipal drainage system. Over the five-year permit term, the communities will develop, implement, and enforce a stormwater management program to reduce the discharge of pollutants from the storm sewer system to protect water quality (Domizio 2004). The Matfield and Salisbury Plain River Watersheds NPS Assessment study, conducted by ESS, Inc., was initiated in 2002 at the request of local and state stakeholders. The primary goals of the project were to identify sources of NPS pollution and recommend actions to protect and improve water quality. Many of the river and stream segments in the NPS study were found to have impaired water and habitat quality due to extensive development, a lack of stream-side vegetation, and minimal stormwater detention or other treatment (ESS 2003). Additionally, DWM conducted water quality sampling at three sites on the Satucket River, USGS sampled one site on the Matfield River and the Bridgewater State WAL also sampled one site on the Matfield River. Due to the lack of instream biological data, most segments in the Matfield River subwatershed are not assessed for the Aquatic Life Use. Nevertheless, this use is identified with an Alert Status in most of these segments because of concerns over habitat degradation, sedimentation, channel alterations, elevated total phosphorus concentrations, and low dissolved oxygen/saturation concentrations. The Matfield River and portions of Salisbury Brook, Salisbury Plain River and the Shumatuscacant River are assessed as impaired for the Aquatic Life Use due to habitat degradation and impacted macroinvertebrate communities. Because of elevated bacteria levels, most segments are assessed as impaired for the Primary and Secondary Contact Recreation uses. Objectionable conditions in some segments caused the Aesthetics use to be assessed as impaired. Taunton River Watershed 2001 Water Quality Assessment Report 72 62wqar.doc DWM CN 94.0 N Boston Harbor Watershed Weymouth Holbrook Avon Custom % Mixing South Coastal Avon Cleveland Watershed Pond Waldo Abington Rockland Lake Stoughton MA62-07 MA62-33 M MA62-46 A 62 - 08 Brockton Whitman MA62-09 Pembroke MA62-05 MA62-38 MA62-34 % East MA62-06 Bridgewater Hanson Brockton East Bridgewater Public Schools AWRF % West Bridgewater M A6 2- 10 Monponsett Robins Plymouth Pond MA62-32 Pond Street Pond Halifax Bridgewater 2 0 2 4 Miles LEGEND Subwatersheds: % NPDES Permitted Facility Lovett Brook (MA62-46) Segments Salisbury Brook (MA62-08) Other Surface Waters Trout Brook (MA62-07) Salisbury Plain River (MA62-05) Town Boundaries Salisbury Plain River (MA62-06) Taunton River Watershed Outli ne Beaver Brook (MA62-09) Meadow Brook (MA62-38) Shumatuscacant River (MA62-33) Poor Meadow Brook (MA62-34) Satucket River (MA62-10) Matfield River (MA62-32) Figure 9. Matfield River Subwatershed Taunton River Watershed 2001 Water Quality Assessment Report 73 62wqar.doc DWM CN 94.0 LOVETT BROOK (SEGMENT MA62-46) Location: Headwaters north of Oak Street, Brockton to inlet Ellis Brett Pond, Brockton. Segment Length: 1.5 miles Classification: B N The drainage area of this segment is approximately 2.2 AVON square miles. Land-use estimates (top three) for the STOUGHTON subwatershed: Residential..... 37.0% Inlet to Forest ........... 27.5% Ellis Brett Pond Commercial ... 12.1% Headwaters The impervious cover area for this subwatershed is 29.3%. # ESS LB1 WMA WATER WITHDRAWAL SUMMARY AND NPDES WASTEWATER DISCHARGE SUMMARY EASTON 1 0 1 Miles BROCKTON Based on available information there are no WMA withdrawals or NPDES dischargers in this subwatershed. Lovett Brook MA62-46 USE ASSESSMENT # Sample Station AQUATIC LIFE Segment Habitat and Flow Surface Water Using MassDEP guidelines, ESS conducted a habitat Subwatershed assessment in Lovett Brook near D.W. Field Park Drive, Town Boundaries Brockton (Station LB1) during the summer of 2002. The Taunton River Watershed Outline overall habitat assessment score was 136/200. Instream cover for fish and epifaunal substrate was somewhat limited as was channel flow status and velocity/depth combinations. The riparian zone width on both banks was also impacted (ESS 2003). Chemistry – water Between August and November 2002, ESS conducted water quality monitoring in Lovett Brook near D.W. Field Park Drive, Brockton (Station LB1) as part of their NPS study. Results of these surveys are summarized as follows (ESS 2003). Dissolved Oxygen and % Saturation Dissolved oxygen in Lovett Brook near D.W. Field Park Drive, Brockton (Station LB1) ranged from 6.2 to 7.7 mg/L with saturations between 69.3 and 74.7%. It should be noted that these data do not represent pre-dawn sampling conditions. Temperature The maximum temperature recorded in Lovett Brook was 22.4�C. pH The pH ranged from 6.6 to 7.6 SU. Specific Conductance Specific conductance ranged from 227.7 to 706.0 µmhos/cm with the highest measurement during the dry weather survey (1 August 2002). Total Suspended Solids (TSS) The highest concentration of TSS measured in Lovett Brook was 12 mg/L (n=3). Total Kjeldahl Nitrogen (TKN) The concentration of TKN in Lovett Brook ranged from 0.5 to 1.3 mg/L (n=3). Taunton River Watershed 2001 Water Quality Assessment Report 74 62wqar.doc DWM CN 94.0 Total Phosphorus Total phosphorus concentrations ranged from 0.02 to 0.15 mg/L. Two of the three measurements were > 0.05 mg/L and were collected during wet weather sampling conditions. The Aquatic Life Use is not assessed for Lovett Brook as a result of the lack of instream biological data (response type indicators of in-stream water quality conditions). This use in this urbanized subwatershed is identified with an Alert Status because of habitat degradation (result of sedimentation) and slightly elevated total phosphorus concentrations. PRIMARY AND SECONDARY CONTACT RECREATION AND AESTHETICS Both fecal coliform and E.coli bacteria were collected by ESS from Lovett Brook near D.W.