Search datasets
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The Wadeable Streams Assessment (WSA) is a first-ever statistically-valid survey of the biological condition of small streams throughout the U.S. EPA worked with the states to conduct the...
Search relevance: 167.21 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 07:11 PM -
Filtered water samples were collected by the USGS National Water Quality Program (NWQP) Southeastern Stream Quality Assessment (SESQA) from 59 perennial, wadeable (less than 10 m width and 1 m...
Search relevance: 79.04 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 10:04 PM -
The National Water Quality Network (NWQN) for Rivers and Streams includes 113 surface-water river and stream sites monitored by the U.S. Geological Survey (USGS) National Water Quality Program,...
Search relevance: 63.54 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 10:47 PM -
The National Water Quality Network (NWQN) for Rivers and Streams includes 110 surface-water river and stream sites monitored by the U.S. Geological Survey (USGS) National Water Quality Program,...
Search relevance: 63.00 | Views last month: 4 | Catalog Last Checked: September 10, 2026 at 08:42 PM -
The National Water Quality Network (NWQN) for Rivers and Streams includes 113 surface-water river and stream sites monitored by the U.S. Geological Survey (USGS) National Water Quality Program,...
Search relevance: 62.98 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 10:45 PM -
The National Water Quality Network (NWQN) for Rivers and Streams includes 111 surface-water river and stream sites monitored by the U.S. Geological Survey (USGS) National Water Quality Program,...
Search relevance: 62.98 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 09:31 PM -
Stream N and other water chemistry measurements originate from three national-scale, randomized, unequally weighted probability surveys of the U.S. EPA's National Rivers and Streams Assessment...
Search relevance: 59.50 | Views last month: 0 | Catalog Last Checked: September 10, 2026 at 06:59 PM -
This data set provides the results of a conservation prioritization analysis for wadeable streams in Missouri, USA. Higher values (Maximum of 1) represent higher conservation value. Conservation...
Search relevance: 55.72 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 10:20 PM -
The dataset includes ecoregion specific species distribution models for 149 common fluvial fishes of the Conterminous U.S. Species models were developed for fluvial fishes considered common and...
Search relevance: 53.96 | Views last month: 0 | Catalog Last Checked: September 15, 2026 at 12:49 AM -
The Environmental Monitoring and Assessment Program (EMAP) was a national research program run by EPA’s Office of Research and Development from 1990 to 2008 to develop the tools necessary to...
Search relevance: 49.95 | Views last month: 9 | Catalog Last Checked: September 10, 2026 at 07:10 PM -
Dissolved pesticides were measured in weekly water samples from 85 wadeable streams in Central Coastal California over a variable six-week period during March–May, 2017, as part of the California...
Search relevance: 49.83 | Views last month: 10 | Catalog Last Checked: September 10, 2026 at 08:58 PM -
Dissolved pesticides were measured in weekly water samples from 100 wadeable freshwater streams across eleven states in the Midwestern U.S. during May-August, 2013, as part of the Midwest Stream...
Search relevance: 47.76 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 10:17 PM -
Dissolved pesticides were measured in weekly water samples from 100 wadeable streams across eleven states in the Midwestern U.S. during May-August, 2013, as part of the Midwest Stream Quality...
Search relevance: 46.08 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 09:02 PM -
The National Water Quality Network (NWQN) for Rivers and Streams includes 113 surface-water river and stream sites monitored by the U.S. Geological Survey (USGS) National Water Quality Program...
Search relevance: 42.05 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 09:15 PM -
The National Water Quality Network (NWQN) for Rivers and Streams includes 113 surface-water river and stream sites monitored by the U.S. Geological Survey (USGS) National Water Quality Program...
Search relevance: 37.41 | Views last month: 4 | Catalog Last Checked: September 10, 2026 at 08:55 PM -
The National Water Quality Network (NWQN) for Rivers and Streams includes 113 surface-water river and stream sites monitored by the U.S. Geological Survey (USGS) National Water Quality Program...
Search relevance: 34.62 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 08:39 PM
