• Organization: King County, Washington
• Updated: 2026-02-14

Prior to downloading data, please download the README file. This dataset contains water quality samples collected from Puget Sound, lakes, and streams in the region which can be filtered by...

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• Organization: Department of Agriculture
• Updated: 2025-11-21

The Water Quality Portal (WQP) is a cooperative service sponsored by the United States Geological Survey (USGS), the Environmental Protection Agency (EPA), and the National Water Quality...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2021-12-14

The Water Quality Portal (WQP) is the premiere source of discrete water-quality data in the United States and beyond. This cooperative service integrates publicly available water-quality data from...

• Organization: Department of the Interior
• Updated: 2020-08-04T00:00:00Z

Water quality data for the Refuge collected by volunteers collected once every two weeks: Turbidity, pH, Dissolved oxygen (DO), Salinity & Temperature. Sampling will occur at designated locations...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2024-03-12

Streamflow data (Fig. 1a) from the Global Streamflow Indices and Metadata Archive (GSIM) were compiled from repositories at https://doi.org/10.1594/PANGAEA.887477 and...

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• Organization: Department of the Interior
• Updated: 2021-08-01T00:00:00Z

Water quality tabular dataset provided by the USGS National Water Quality Laboratory in Denver, Colorado.

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• Organization: Department of the Interior
• Updated: 2021-08-01T00:00:00Z

Water quality tabular dataset provided by the USGS National Water Quality Laboratory in Denver, Colorado.

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• Organization: Department of the Interior
• Updated: 2021-08-01T00:00:00Z

Water quality tabular dataset provided by the USGS National Water Quality Laboratory in Denver, Colorado.

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• Organization: Department of the Interior
• Updated: 2021-08-01T00:00:00Z

Water quality tabular dataset provided by the USGS National Water Quality Laboratory in Denver, Colorado.

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• xls

• Organization: Department of the Interior
• Updated: 2021-08-01T00:00:00Z

Water quality tabular dataset provided by the USGS National Water Quality Laboratory in Denver, Colorado.

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• Organization: State of Maryland
• Updated: 2018-08-13

This is the 2014 Integrated Report. EPA approved this submission in accordance with Sections 303(d), 305(b), and 314(l) of the Clean Water Act, on October 16, 2015. The Integrated Report (IR)...

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• Organization: Department of the Interior
• Updated: 1998-09-10T00:00:00Z

This file contains the water quality data summarized in the 1999 report entitled: Baseline Water Quality Inventory, Greenbelt Park. The data and locations existed in the United States...

• none

• Organization: Department of the Interior
• Updated: 1998-11-16T00:00:00Z

This file contains the locations at which water quality data was summarized in the 1999 report entitled: Baseline Water Quality Inventory, Greenbelt Park. The data and locations existed in the...

• none

• Organization: State of Connecticut
• Updated: 2019-10-29

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...

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• Organization: State of Connecticut
• Updated: 2019-10-29

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...

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• none
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• Organization: Department of the Interior
• Updated: 2000-05-23T00:00:00Z

This file contains the water quality data summarized in the 2002 report entitled: Baseline Water Quality Inventory, DeSoto National Memorial. The data and locations existed in the United States...

• none

• Organization: Department of the Interior
• Updated: 1998-03-09T00:00:00Z

This file contains the water quality data summarized in the 1998 report entitled: Baseline Water Quality Inventory, Tonto National Monument. The data and locations existed in the United States...

• none

• Organization: Department of the Interior
• Updated: 1996-09-18T00:00:00Z

This file contains the water quality data summarized in the 1997 report entitled: Baseline Water Quality Inventory, Petersburg National Battlefield. The data and locations existed in the United...

• none

• Organization: Department of the Interior
• Updated: 1998-08-07T00:00:00Z

This file contains the water quality data summarized in the 1999 report entitled: Baseline Water Quality Inventory, Navajo National Monument. The data and locations existed in the United States...

• none

• Organization: Department of the Interior
• Updated: 1995-12-20T00:00:00Z

This file contains the water quality data summarized in the 1996 report entitled: Baseline Water Quality Inventory, Canaveral National Seashore. The data and locations existed in the United...

• none