Download - Adam Kiel, Iowa Soybean Association
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409,236 acres
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*Daily samples collected May-July 2000
0.00
1.00
2.00
3.00
4.00
5.00
6.00
7.00
8.00
9.00
1999 2000* 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
mg/
l
Nitrate + Nitrite as N
ERW Median
Statewide Median
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0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
1999 2000* 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
mg/
l
Total Phosphorus
ERW Median
Statewide Median
*Daily samples collected May-July 2000
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0
20
40
60
80
100
120
140
160
180
200
1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
mg/
L
Total Suspended Solids
ERW Median
Statewide Median
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20,000
40,000
60,000
80,000
100,000
120,000
140,000
160,000
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
English River Watershed Corn/Soy Acres 2002-2013
Corn Soybeans
0%
10%
20%
30%
40%
50%
60%
70%
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
Percentage of English River Watershed in Row Crop 2002-2013
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1,341 Ponds 640 Miles of Terrace
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