Search datasets
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This dataset shows the temporal frequency and spatial extent of cyanobacteria cells in large, freshwater lakes and reservoirs across the continental United States derived from 300x300 meter MEdium...
Search relevance: 1.00 | Views last month: 89 | Catalog Last Checked: August 03, 2026 at 04:16 AM -
ECHO provides integrated compliance and enforcement information for about 800,000 regulated facilities nationwide. Its features range from simple to advanced, catering to users who want to conduct...
Search relevance: 1.00 | Views last month: 74 | Catalog Last Checked: August 03, 2026 at 04:45 AM -
The Great Lakes Environmental Database (GLENDA) houses environmental data collected by EPA Great Lakes National Program Office (GLNPO) programs that sample water, aquatic life, sediments, and air...
Search relevance: 1.00 | Views last month: 73 | Catalog Last Checked: August 01, 2026 at 03:30 AM -
This GIS dataset contains data on wastewater treatment plants, based on EPA's Facility Registry Service (FRS) and NPDES, along with Clean Watersheds Needs Survey (CWNS) and other data sources.
Search relevance: 1.00 | Views last month: 67 | Catalog Last Checked: August 03, 2026 at 04:43 AM -
The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage...
Search relevance: 1.00 | Views last month: 56 | Catalog Last Checked: August 01, 2026 at 04:42 AM -
This data set is a compilation of data from two sampling efforts (2010 and 2014), focused on determining the presence and distribution of organic contaminants throughout the United States portion...
Search relevance: 1.00 | Views last month: 31 | Catalog Last Checked: August 01, 2026 at 04:04 AM -
This GIS dataset contains data on wastewater treatment plants, based on EPA's Facility Registry Service (FRS) and NPDES, along with Clean Watersheds Needs Survey (CWNS) and other data sources.
Search relevance: 1.00 | Views last month: 24 | Catalog Last Checked: August 03, 2026 at 04:43 AM -
The Newberry Volcano EGS Demonstration in central Oregon, a 5 year project begun in 2010, tests recent technological advances designed to reduce the cost of power generated by EGS in a hot, dry...
Search relevance: 1.00 | Views last month: 20 | Catalog Last Checked: August 03, 2026 at 12:58 AM -
This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). This EnviroAtlas dataset describes the percentage of a 15-m...
Search relevance: 1.00 | Views last month: 20 | Catalog Last Checked: May 06, 2026 at 12:20 AM -
This Data Release contains various types of hydrologic and geologic data from the Pecos River Basin during 1900–2015, including water-quality data compiled and synthesized from various sources...
Search relevance: 1.00 | Views last month: 19 | Catalog Last Checked: August 01, 2026 at 04:24 AM -
Monthly raw water quality data on alkalinity, hardness, TDS, Turbidity, TOC, pH, and temperature. This dataset is associated with the following publication: Levine, A., J. Yang , and J....
Search relevance: 1.00 | Views last month: 18 | Catalog Last Checked: August 03, 2026 at 12:47 AM -
This part of the data release contains historical streamflow data compiled from the literature and evaporation loss estimates used in the streamflow gain loss equation.
Search relevance: 1.00 | Views last month: 18 | Catalog Last Checked: August 01, 2026 at 05:03 AM -
This data provides results from the [California Environmental Data Exchange Network](https://ceden.waterboards.ca.gov) (CEDEN) for field and lab chemistry analyses. The data set contains two...
Search relevance: 1.00 | Views last month: 17 | Catalog Last Checked: July 31, 2026 at 08:42 PM -
Continuous water-temperature data were collected at multiple restoration sites along the Middle Fork and mainstem Willamette Rivers between Jasper and Newberg, Oregon, to support effectiveness...
Search relevance: 1.00 | Views last month: 16 | Catalog Last Checked: August 01, 2026 at 06:04 AM -
See full Data Guide here. Surface Water Quality Classifications Set: This dataset is a line and a polygon feature-based layer compiled at 1:24,000 scale that includes water quality...
Search relevance: 1.00 | Views last month: 16 | Catalog Last Checked: August 02, 2026 at 05:29 PM -
This dataset represents the base flow index values within individual, local NHDPlusV2 catchments and upstream, contributing watersheds. Attributes of the landscape layer were calculated for every...
Search relevance: 1.00 | Views last month: 16 | Catalog Last Checked: August 01, 2026 at 03:29 AM -
Understanding the relationship between flood inundation and floodplains is critical for ecosystem and community health and well-being, as well as targeting floodplain and riparian restoration....
Search relevance: 1.00 | Views last month: 15 | Catalog Last Checked: August 03, 2026 at 04:18 AM -
A database where EPA has compiled data on public drinking water systems and whether they have certain drinking water violations. This data is collected by the states and given to the EPA. This...
Search relevance: 1.00 | Views last month: 13 | Catalog Last Checked: August 03, 2026 at 12:43 AM -
Continuous water temperature data were collected at multiple sites along the Middle Fork and mainstem Willamette Rivers between Jasper and Newberg, Oregon, to support effectiveness monitoring for...
Search relevance: 1.00 | Views last month: 13 | Catalog Last Checked: August 01, 2026 at 05:03 AM -
Continuous water-temperature data were collected at multiple sites along the Middle Fork and mainstem Willamette Rivers between Jasper and Newberg, Oregon, to support effectiveness monitoring for...
Search relevance: 1.00 | Views last month: 12 | Catalog Last Checked: August 01, 2026 at 06:04 AM
