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State: Massachusetts
Waterbody ID: MA73-26
Location: Isolated (urban): Headwaters east of Sias Lane/west of Randolph Avenue, Milton to confluence with Gulliver Creek, Milton (Note: Confluence not visible on quad, brook culverted underground east of Otis Street/west of Govenor Belcher Lane, Milton)
State Waterbody Type: River
EPA Waterbody Type: Rivers and Streams
Water Size: 1.654021
Units: miles
Watershed Name: Charles
On This Page
- Water Quality Assessment Status
- Causes of Impairment
- Probable Sources Contributing to Impairments
- TMDLs That Apply to This Waterbody
- Previous Causes of Impairment Now Attaining All Uses
State: Massachusetts
Waterbody ID: MA73-26
Location: Isolated (urban): Headwaters east of Sias Lane/west of Randolph Avenue, Milton to confluence with Gulliver Creek, Milton (Note: Confluence not visible on quad, brook culverted underground east of Otis Street/west of Govenor Belcher Lane, Milton)
State Waterbody Type: River
EPA Waterbody Type: Rivers and Streams
Water Size: 1.654021
Units: miles
Watershed Name: Charles
Data are also available for these years: 2006 2004 2002 1998
2010 Waterbody Report for Unquity Brook
Click on the waterbody for an interactive map
Features
- About This Database (Integrated Report)
- Assessing Water Quality (Questions and Answers)
- Integrated Reporting Guidance
- Previous National Water Quality Reports
- EnviroMapper for Water
- AskWATERS
- EPA WATERS Homepage
- Exchange Network
- Assessment Database
- Statewide Statistical Surveys
- How's My Waterway Local Search tool
- Pollution Categories Summary Document
Water Quality Assessment Status for Reporting Year 2010
The overall status of this waterbody is Impaired.
Description of this table
| Designated Use | Designated Use Group | Status |
|---|---|---|
| Aesthetic | Aesthetic Value | Impaired |
| Fish Consumption | Aquatic Life Harvesting | Not Assessed |
| Fish, Other Aquatic Life And Wildlife | Fish, Shellfish, And Wildlife Protection And Propagation | Impaired |
| Primary Contact Recreation | Recreation | Impaired |
| Secondary Contact Recreation | Recreation | Impaired |
Causes of Impairment for Reporting Year 2010
Description of this table
| Cause of Impairment | Cause of Impairment Group | Designated Use(s) | State TMDL Development Status |
|---|---|---|---|
| Debris/Floatables/Trash | Trash | Aesthetic | Non-pollutant impairment |
| Dissolved Oxygen | Organic Enrichment/Oxygen Depletion | Fish, Other Aquatic Life And Wildlife | TMDL needed |
| Fecal Coliform | Pathogens | Primary Contact Recreation, Secondary Contact Recreation | TMDL completed |
| Low Flow Alterations | Flow Alteration(s) | Fish, Other Aquatic Life And Wildlife | Non-pollutant impairment |
| Phosphorus, Total | Nutrients | Fish, Other Aquatic Life And Wildlife | TMDL needed |
| Physical Substrate Habitat Alterations | Habitat Alterations | Fish, Other Aquatic Life And Wildlife | Non-pollutant impairment |
| Sedimentation/Siltation | Sediment | Aesthetic | TMDL needed |
| pH, Low | pH/Acidity/Caustic Conditions | Fish, Other Aquatic Life And Wildlife | TMDL needed |
Probable Sources Contributing to Impairment for Reporting Year 2010
Description of this table
| Probable Source | Probable Source Group | Cause(s) of Impairment |
|---|---|---|
| Channelization | Hydromodification | Dissolved Oxygen; Low Flow Alterations; Phosphorus, Total; Physical Substrate Habitat Alterations; pH, Low |
| Source Unknown | Unknown | Dissolved Oxygen; Low Flow Alterations; Phosphorus, Total; Physical Substrate Habitat Alterations; pH, Low |
| Unspecified Urban Stormwater | Urban-Related Runoff/Stormwater | Debris/Floatables/Trash; Fecal Coliform; Sedimentation/Siltation |
| Wet Weather Discharges (Point Source And Combination Of Stormwater, Sso Or Cso) | Municipal Discharges/Sewage | Fecal Coliform |
TMDLs That Apply to this waterbody
Description of this table
| TMDL Document Name | TMDL Date | TMDL Pollutant Description | TMDL Pollutant Source Type | Cause(s) of Impairment Addressed |
|---|---|---|---|---|
| Neponset River | Jun-21-2002 | Fecal Coliform | Nonpoint Source | Fecal Coliform; Pathogens |
Previous Causes of Impairments Now Attaining All Uses
No causes of impairment are recorded as attaining all uses for this waterbody.