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12 sty 2024 · The National Water Availability Assessment Data Companion is a centralized website and data delivery system that will provide routinely updated and nationally consistent modeled water quantity, water quality, and water use information, along with long-term trends in observational data.
A new, interactive mapping tool, developed by the USGS National Water-Quality Assessment Project, allows users to do just that—visualize long-term changes in water quality and in health of aquatic life at hundreds of sites on streams and rivers across the United States.
A new USGS interactive map provides a long-term look at changes in the quality of our nation’s rivers and streams, using data from over 70 organizations. Go online and see how 51 water-quality metrics and 38 aquatic-life metrics at nearly 1,400 sites have changed over the last 40 years.(Public domain.)
7 cze 2023 · The NRSA is designed to answer the following questions about rivers and streams across the United States: What percentage of rivers and streams support healthy ecological communities and recreation? What are the most common problems? Are conditions improving or getting worse? Are investments in water quality focused appropriately?
22 wrz 2023 · In this review, we summarize exposure risk profiles and health effects for seven legacy and emerging drinking water contaminants or contaminant groups: arsenic, disinfection by-products,...
4 maj 2019 · One important goal of both approaches is documenting long-term changes in water quality. Here, we compare chloride change results in US rivers and streams between the early 2000s and early 2010s from both approaches.
15 mar 2019 · We present a conceptual model that explores the relationship of streamflow trends to 15 water-quality parameters at 370 sites across the contiguous United States (US).
