Maestre, A., Pitt, R., Center for Watershed Protection . 2005. The National Stormwater Quality Database, Version 1.1: A compilation and analysis of NPDES stormwater monitoring information. US EPA, Washington, D.C.

The NSQD contains selected water quality information from the monitoring carried out as part of the U.S. EPA’s NPDS Phase I stormwater permit program. A complementary database accompanies this report.