Resource Library

Increasing accessibility to satellite-based water quality estimates so researchers can create better models and facilitate new data-driven approaches to monitoring and understanding critical water resources.

This study uses satellite data and in situ measurements to show how seasonal Sargassum influx in the southern Mexican Caribbean increases coastal turbidity and degrades water quality to inform strategies to better manage and mitigate these recurring events.

The Coastal Resources Division administers beach water quality monitoring, public notification and data reporting to the Environmental Protection Agency and other water quality agencies.

The report highlights the critical role of the oceans and ocean ecosystems

The Caribbean Environment Programme and Cartagena Convention Secretariat webpage

Copernicus Marine Service provides free and open marine data and services to enable marine policy implementation, support Blue growth and scientific innovation

Across the state, Environment Protection Authority Victoria’s (EPA) authorised officers and environmental scientists collect water samples to detect pollution and monitor the health of Victoria’s waterways.

This study shows that river water quality feeding a seasonally hypoxic tropical bay in Panama varies sharply with catchment land use and land cover, with pristine peat swamps producing naturally low-oxygen blackwater and more urbanized or deforested catchments showing elevated nutrients, highlighting how even moderate land-use changes can alter coastal ecosystem inputs.

This review analyzes two decades of water-quality research using multivariate statistical analysis, showing rapid growth—especially in developing countries—and identifying PCA, HCA, FA, and DA as the most widely applied techniques across studies of rivers, groundwater, and lakes.

NCEI provides access to an extensive archive of environmental data through several platforms. We deliver the climate, coastal, oceanographic, and geophysical data you need in a variety of formats.

Lake Victoria, Africa’s largest freshwater lake, is undergoing severe ecological decline driven by pollution and eutrophication that threaten its unique biodiversity and the well-being of surrounding communities, even though improved operation of existing treatment facilities could significantly reduce organic pollution on the Kenyan side.

A practical handbook providing standardized protocols for monitoring marine water quality across the Mesoamerican Reef to support effective conservation and management.

A review of emerging methods showing how real-time monitoring, remote sensing, and advanced machine learning models are transforming the accuracy and efficiency of inland river water-quality forecasting and management, especially LSTMs, GRUs, and hybrid approaches.

A map view showing geospatial context to provide an easy and shareable snapshot of environmental/spatial data for reporting or display.

This study portrayed how riverine sediment and nutrient inputs shape water quality and benthic communities on two little-known coral reefs in north-central Puerto Rico, identifying Tómbolo Reef as a potential refuge for threatened reef-building corals while nearby Machuca Reef shows degraded, macroalgae-dominated conditions.

This text began as a collection of class notes for a course on applied statistical methods for hydrologists taught at the U.S. Geological Survey (USGS) National Training Center. Course material was formalized and organized into a textbook, first published in 1992 by Elsevier as part of their Studies in Environmental Science series. In 2002, the work was made available online as a USGS report.