Regional Stream Quality Assessment (NAWQA) Website and Data Portal


July 2015


General public, Academia, USGS staff

Base Data

Site information and data collected at 100 sites on small (wadeable) streams per regional study area



Launch RSQA

Web presence for NAWQA project, plus data download portal. Data includes both water-quality and ecological survey of habitat, algae, benthic invertebrates, and fish at all sites, and collection of streambed sediment for chemical analysis and toxicity testing. Simple query tool allows the user to explore and access data of interest. Ability to turn on/off data layers, change base map, identify features, plus the ability to download tab-delimited data from the project.

Screenshot of the RSQA homepage

Screenshot of the RSQA map

Screenshot of a water-quality graph