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State: New Hampshire
Waterbody ID: NHEST600031004-08-04
Location: 010600031004, BLACKWATER RIVER, CONDITIONALLY APPROVED, OPEN, 145.55 ACRES
State Waterbody Type: Estuary
EPA Waterbody Type: Bays and Estuaries
Water Size: .309184
Units: square miles
Watershed Name:
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: New Hampshire
Waterbody ID: NHEST600031004-08-04
Location: 010600031004, BLACKWATER RIVER, CONDITIONALLY APPROVED, OPEN, 145.55 ACRES
State Waterbody Type: Estuary
EPA Waterbody Type: Bays and Estuaries
Water Size: .309184
Units: square miles
Watershed Name:
Data are also available for these years: 2008
2010 Waterbody Report for BLACKWATER RIVER
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 |
|---|---|---|
| Aquatic Life | Fish, Shellfish, And Wildlife Protection And Propagation | Not Assessed |
| Drinking Water Supply | Public Water Supply | Good |
| Fish Consumption | Aquatic Life Harvesting | Impaired |
| Primary Contact Recreation | Recreation | Impaired |
| Secondary Contact Recreation | Recreation | Good |
| Shellfish Consumption | Aquatic Life Harvesting | Impaired |
| Wildlife | Fish, Shellfish, And Wildlife Protection And Propagation | Not Assessed |
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 |
|---|---|---|---|
| Dioxin (Including 2,3,7,8-TCDD) | Dioxins | Shellfish Consumption | TMDL needed |
| Enterococcus Bacteria | Pathogens | Primary Contact Recreation | TMDL needed |
| Fecal Coliform | Pathogens | Shellfish Consumption | TMDL completed |
| Mercury | Mercury | Fish Consumption, Shellfish Consumption | TMDL needed |
| Polychlorinated Biphenyls (PCBs) | Polychlorinated Biphenyls (PCBs) | Shellfish Consumption, Fish Consumption | TMDL needed |
Probable Sources Contributing to Impairment for Reporting Year 2010
Description of this table
| Probable Source | Probable Source Group | Cause(s) of Impairment |
|---|---|---|
| Atmospheric Deposition - Toxics | Atmospheric Deposition | Mercury |
| Source Unknown | Unknown | Dioxin (Including 2,3,7,8-TCDD); Enterococcus Bacteria; Fecal Coliform; Mercury; Polychlorinated Biphenyls (PCBs) |
| 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 |
|---|---|---|---|---|
| 58 Nh Bacteria Impaired Waters | Aug-29-2011 | Enterococcus Bacteria | Point/Nonpoint Source | Enterococcus Bacteria |
Previous Causes of Impairments Now Attaining All Uses
No causes of impairment are recorded as attaining all uses for this waterbody.