NAWQA Study Design
Overview of the NAWQA Data Collection Strategy.
Data Warehouse Abstract
Read the abstract on the USGS National Water Quality Assessment Data.
National Synthesis Studies
Ecology
Nutrients
Pesticides
VOCs
Trace Elements
Regional Assessments on Water-Quality Status and Trends
Streams and rivers
Ground water
Topical Studies of National Priorities
Effects of urbanization on stream ecosystems
Transport of contaminants to public-supply wells
Sources, transport, and fate of agricultural chemicals
Mercury in stream ecosystems
Effects of nutrient enrichment on stream ecosystems
Special studies on source-water and drinking-water quality
Surface-water intakes
Public supply wells
Domestic wells
Trends
Water
Sediment