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New Hampshire Department of Environmental Services

Surface Water Quality Assessment Viewers

These interactive maps allow individuals to,

1. see the spatial extent of assessment units,
2. see where sampling data was collected,
3. access the Watershed Report Cards (a.k.a. 305(b)/303(d) assessment info.),
4. run reports to access water quality data summaries used in the assessment process, and
5. view the extent of the USEPA's 2017 MS4 General Permit Areas.

Watershed Report Cards

Watershed Report Cards have been built from the 305(b)/303(d) assessment information.

Each Watershed Report Card covers a single, 12-digit Hydrologic Unit Code (HUC12), on average a 34 square mile area.

Watershed Report Cards have three components:

1. REPORT CARD - A one-page summary of the overall use support for Aquatic Life, Primary Contact (e.g., swimming), Secondary Contact (e.g., boating), and Fish Consumption Designated Uses on every Assessment Unit ID (AUID) within the HUC12.

2. HUC 12 MAP - A map of the watershed with abbreviated labels for each AUID within the HUC12.

3. ASSESSMENT DETAILS - Detailed assessment information for each and every AUID in the report card and map.

How are the Surface Water Quality Assessment determinations made?
All readily available data with reliable quality assurance/quality control is used in the biennial surface water quality assessments. For a full understanding of how the Surface Water Quality Standards (Env-Wq 1700) are translated into surface water quality assessments we urge the reader to review the Consolidated Assessment and Listing Methodology (CALM) Adobe Acrobat Reader Symbol.

How do I access the Report Cards?
The Report Cards are accessible through our Surface Water Quality Assessment Viewers (above).



Adobe Acrobat Reader Symbol Adobe Acrobat Reader format. Download a free reader from Adobe.

NH Department of Environmental Services | 29 Hazen Drive | PO Box 95 | Concord, NH 03302-0095
(603) 271-3503 | TDD Access: Relay NH 1-800-735-2964 | Hours: M-F, 8am-4pm

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