LAKE ERIE (DUNKIRK HARBOR)
(SEGMENT ID 0105-0009)
Waterbody Segment Assessment Factsheet Based on the 2021 CALM
Revised: December 07, 2021
IMPAIRED SEGMENT (IR CATEGORY 5)
Introduction
This is the most recent water quality assessment information for this waterbody segment. The assessment is based on water quality data that meet the quality assurance requirements of DEC’s Division of Water. An outline of the process used to assess the quality of New York State waters is described in the DEC’s Consolidated Assessment and Listing Methodology (CALM). The CALM describes the assessment and listing process to improve the consistency of assessment and listing decisions.
WATERBODY INFORMATION
- Water Index Number: Ont 158-E (portion 7a)
- Classification: B
- Waterbody Type: G Lakes Shore
- Size: 2.8 Miles
- Drainage Basin: Lake Erie-Niagara River
- Hydrologic Unit Code: 0412010102
- County: Chautauqua
- Segment Description: Portion as described below
Assessment of Best Use
Background
New York State waterbodies are classified to reflect their best use(s) and the assessment of a waterbody is based on the ability of waters to support them. This section lists whether this waterbody segment supports its best use(s). View DEC’s CALM for more information about the terms used below.
| Best Use | Use Assessment | Use Assessment Confirmation | Pollutant(s) | Integrated Reporting Category | 303(d) Year |
|---|---|---|---|---|---|
 Fishing
|
Impaired | Confirmed | Fecal Coliform; PCBs | IR54 | 2002; 2004 |
 Secondary Contact Recreation
|
Impaired | Confirmed | Fecal Coliform; PCBs | IR54 | 2002; 2004 |
 Primary Contact Recreation
|
Impaired | Confirmed | Fecal Coliform; PCBs | IR54 | 2002; 2004 |
 Source of Water Supply
|
N/A for Waterbody Class | — | — | — | — |
 Shellfishing
|
N/A for Waterbody Class | — | — | — | — |
 EPA Appended Listing
|
N/A for Waterbody Class | — | — | — | — |
4 For Lake Erie and Lake Ontario Shoreline segments included on the Section 303(d) List due to fish consumption restrictions, the primary source of contamination is the open lake rather than the near-shore waters. Due to fish migration, the advisories apply to tributary waters up to the first impassable barrier.
Water Quality Monitoring Data Used
Background
Water quality monitoring data are collected by DEC’s Division of Water and community partners. While data are evaluated to assess whether best use(s) are supported, they may not be reflected in the final assessment of best use(s) presented above. The process for conducting assessments of best use(s) is explained in DEC’s CALM.
This section lists the data sources for the pollutants listed in the Assessment of Best Use table.
| Pollutant(s) | Data Source | Years |
|---|---|---|
| Fecal Coliform | Historical Data Source | — |
| PCBs | Historical Data Source | — |
For more information, or to sign-up for email updates from NYSDEC, visit our website: https://www.dec.ny.gov/chemical/36730.html
