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National Stream Survey Data Sets
The specific primary goals or the National Stream Survey (NSS-I) are (1) to determine the percentage, extent (number, length, and drainage area), location, and chemical characteristics of streams in the United States that are presently acidic, or that have low acid neutralizing capacity (ANC) and thus might become acidic in the future, and (2) to identify streams representative of important classes in each region that might be selected for more intensive study or long-term monitoring.
Data (ASCII) and metadata (PDF) for four National Stream Survey data sets are available below. To download a data or metadata file, use your browser's "File" "Save As..." option. Also available is the National Stream Survey Database Guide in PDF format.
| Pilot Study | Pilot Study | ||
 Chemistry Survey |
Synthesized Data |
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| View Metadata | View Metadata | ||
| View Data | View Data | ||
| Phase I | Phase I | ||
| Field Site Observations |
Chemistry Sampling |
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| View Metadata | View Metadata | ||
| View Data | View Data | ||