Water Quality Assessment

Data

Stream monitoring stations from the USGS National Water Information System (NWIS) and EPA’s STOrage and RETrieval and Water Quality eXchange (STORET-WQX) databases are available for selection and analysis.  Our tools can also be used to download stream flow (daily average or 15-minute), water quality, and annual peak discharge data.

Results

Users can view results and model outputs in a variety of options including:

  • Time series graphs
  • Envelope plots
  • Histograms
  • Cumulative distribution function (CDF) graphs
  • Flood and drought magnitude-frequency plots
  • Duration curves