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New Hampshire Department of Environmental Services
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Watershed Report Cards

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

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 - Anywhere from one to 40 pages with the 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).

Where can I find more advanced resources?
GIS shapefiles, Google Earth KML map files as well as of all AUIDs in a sortable Excel file are accessible for most assessment cycles.

How are assessments coded in the report card?
Assessment outcomes are displayed on a color scale as well as an alpha numeric scale that provides additional distinctions for the designated use and parameter level assessments as outlined in the table below.

Click on table to enlarge.

color coded table

* "Category 1" only exists at the Assessment Unit Level.
^ TMDL stands for Total Maximum Daily Load studies

Go to the Watershed Report Cards




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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