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2018: Jan
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2017: Jan
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2016: Jan
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2015: Jan
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2014: Jan
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2013: Jan
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2012: Jan
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2011: Jan
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Apr
May
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2010: Jan
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2009: Jan
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Mar
Apr
May
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2008: Jan
Feb
Mar
Apr
May
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Feb Mar Apr May Jun 2018: Jan
Feb Mar Apr May Jun 2017: Jan
Feb Mar Apr May Jun 2016: Jan
Feb Mar Apr May Jun 2015: Jan
Feb Mar Apr May Jun 2014: Jan
Feb Mar Apr May Jun 2013: Jan
Feb Mar Apr May Jun 2012: Jan
Feb Mar Apr May Jun 2011: Jan
Feb Mar Apr May Jun 2010: Jan
Feb Mar Apr May Jun 2009: Jan
Feb Mar Apr May Jun 2008: Jan
Feb Mar Apr May Jun
Eastern Great Basin
2007: Jan Feb Mar Apr May Jun
2006: Jan Feb Mar Apr May Jun
2005: Jan Feb Mar Apr May Jun
2004: Jan Feb Mar Apr May Jun
2003: Jan Feb Mar Apr May Jun
2002: Jan Feb Mar Apr May Jun
2001: Jan Feb Mar Apr May Jun
2000: Jan Feb Mar Apr May Jun
1999: Jan Feb Mar Apr May Jun
1998: Jan Feb Mar Apr May Jun
1997: Jan Feb Mar Apr May Jun
1996: Jan Feb Mar Apr May Jun
2007: Jan Feb Mar Apr May Jun
2006: Jan Feb Mar Apr May Jun
2005: Jan Feb Mar Apr May Jun
2004: Jan Feb Mar Apr May Jun
2003: Jan Feb Mar Apr May Jun
2002: Jan Feb Mar Apr May Jun
2001: Jan Feb Mar Apr May Jun
2000: Jan Feb Mar Apr May Jun
1999: Jan Feb Mar Apr May Jun
1998: Jan Feb Mar Apr May Jun
1997: Jan Feb Mar Apr May Jun
1996: Jan Feb Mar Apr May Jun
Lower Colorado Basin
2007: Jan Feb Mar Apr May Jun
2006: Jan Feb Mar Apr May Jun
2005: Jan Feb Mar Apr May Jun
2004: Jan Feb Mar Apr May Jun
2003: Jan Feb Mar Apr May Jun
2002: Jan Feb Mar Apr May Jun
2001: Jan Feb Mar Apr May Jun
2000: Jan Feb Mar Apr May Jun
1999: Jan Feb Mar Apr May Jun
1998: Jan Feb Mar Apr May Jun
1997: Jan Feb Mar Apr May Jun
1996: Jan Feb Mar Apr May Jun
2007: Jan Feb Mar Apr May Jun
2006: Jan Feb Mar Apr May Jun
2005: Jan Feb Mar Apr May Jun
2004: Jan Feb Mar Apr May Jun
2003: Jan Feb Mar Apr May Jun
2002: Jan Feb Mar Apr May Jun
2001: Jan Feb Mar Apr May Jun
2000: Jan Feb Mar Apr May Jun
1999: Jan Feb Mar Apr May Jun
1998: Jan Feb Mar Apr May Jun
1997: Jan Feb Mar Apr May Jun
1996: Jan Feb Mar Apr May Jun
Upper Colorado Basin
2007: Jan Feb Mar Apr May Jun
2006: Jan Feb Mar Apr May Jun
2005: Jan Feb Mar Apr May Jun
2004: Jan Feb Mar Apr May Jun
2003: Jan Feb Mar Apr May Jun
2002: Jan Feb Mar Apr May Jun
2001: Jan Feb Mar Apr May Jun
2000: Jan Feb Mar Apr May Jun
1999: Jan Feb Mar Apr May Jun
1998: Jan Feb Mar Apr May Jun
1997: Jan Feb Mar Apr May Jun
1996: Jan Feb Mar Apr May Jun
2007: Jan Feb Mar Apr May Jun
2006: Jan Feb Mar Apr May Jun
2005: Jan Feb Mar Apr May Jun
2004: Jan Feb Mar Apr May Jun
2003: Jan Feb Mar Apr May Jun
2002: Jan Feb Mar Apr May Jun
2001: Jan Feb Mar Apr May Jun
2000: Jan Feb Mar Apr May Jun
1999: Jan Feb Mar Apr May Jun
1998: Jan Feb Mar Apr May Jun
1997: Jan Feb Mar Apr May Jun
1996: Jan Feb Mar Apr May Jun
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