National Water-Quality Assessment (NAWQA) Program
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Source of data
(USGS Report DS 752)
Details on methods
(USGS SIR 2013-5009)
| 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 |
EPest-low and EPest-high provide lower and upper estimates of the geographic distribution of pesticide use.