"Exhibit 1. Multimetric Index (MMI) for benthic macroinvertebrates in wadeable streams of the contiguous U.S., by region, 2000-2009"
"Data source: U.S. EPA, 2013a"
"For a description of this indicator and for technical documentation, visit EPA's Report on the Environment at www.epa.gov/roe."
"All U.S."
"Units: percent of stream miles"
"Survey Years","Least disturbed","Moderately disturbed","Most disturbed","UPPER error bound for least disturbed","LOWER error bound for least disturbed","UPPER error bound for moderately disturbed","LOWER error bound for moderately disturbed","UPPER error bound for most disturbed","LOWER error bound for most disturbed"
"2000-2004","27.42716255","28.73106553","43.84177192","31.20370667","23.65061842","32.71587539","24.74625567","47.8996526","39.78389125"
"2008-2009","20.48976939","23.48282506","56.02740556","23.40993815","17.56960062","26.9222038","20.04344632","59.79898346","52.25582766"
"Coastal Plains"
"Units: percent of stream miles"
"Survey Years","Least disturbed","Moderately disturbed","Most disturbed","UPPER error bound for least disturbed","LOWER error bound for least disturbed","UPPER error bound for moderately disturbed","LOWER error bound for moderately disturbed","UPPER error bound for most disturbed","LOWER error bound for most disturbed"
"2000-2004","31.31894423","21.88641897","46.79463679","46.38205198","16.25583648","33.82530993","9.947528021","61.68893185","31.90034174"
"2008-2009","11.51942381","17.81081688","70.66975931","18.63255514","4.406292484","25.76127024","9.860363525","80.22727356","61.11224506"
"Northern Appalachians"
"Units: percent of stream miles"
"Survey Years","Least disturbed","Moderately disturbed","Most disturbed","UPPER error bound for least disturbed","LOWER error bound for least disturbed","UPPER error bound for moderately disturbed","LOWER error bound for moderately disturbed","UPPER error bound for most disturbed","LOWER error bound for most disturbed"
"2000-2004","23.48566028","20.03229416","56.48204557","32.99018901","13.98113155","29.60419831","10.46039","68.29284741","44.67124372"
"2008-2009","19.86995166","22.43994551","57.69010283","27.79419379","11.94570953","31.91207219","12.96781882","67.64811949","47.73208618"
"Northern Plains"
"Units: percent of stream miles"
"Survey Years","Least disturbed","Moderately disturbed","Most disturbed","UPPER error bound for least disturbed","LOWER error bound for least disturbed","UPPER error bound for moderately disturbed","LOWER error bound for moderately disturbed","UPPER error bound for most disturbed","LOWER error bound for most disturbed"
"2000-2004","35.73240259","14.5312543","49.73634312","45.96186359","25.50294158","21.29708919","7.765419404","61.1100659","38.36262033"
"2008-2009","33.22240382","31.32422657","35.45336961","41.86938534","24.57542231","40.60687295","22.04158019","44.12744844","26.77929077"
"Southern Appalachians"
"Units: percent of stream miles"
"Survey Years","Least disturbed","Moderately disturbed","Most disturbed","UPPER error bound for least disturbed","LOWER error bound for least disturbed","UPPER error bound for moderately disturbed","LOWER error bound for moderately disturbed","UPPER error bound for most disturbed","LOWER error bound for most disturbed"
"2000-2004","18.80159881","25.4556249","55.74277629","25.18471184","12.41848578","32.31671618","18.59453362","64.06976881","47.41578377"
"2008-2009","16.91155425","17.42661824","65.66182751","22.82115197","11.00195652","23.01630184","11.83693465","73.12619906","58.19745596"
"Southern Plains"
"Units: percent of stream miles"
"Survey Years","Least disturbed","Moderately disturbed","Most disturbed","UPPER error bound for least disturbed","LOWER error bound for least disturbed","UPPER error bound for moderately disturbed","LOWER error bound for moderately disturbed","UPPER error bound for most disturbed","LOWER error bound for most disturbed"
"2000-2004","24.72642937","16.09059063","59.18298","37.61045649","11.84240226","29.78685621","2.394325042","74.37939643","43.98656356"
"2008-2009","20.66608876","39.24765881","40.08625243","29.18896605","12.14321146","52.66514818","25.83016944","51.70816262","28.46434225"
"Temperate Plains"
"Units: percent of stream miles"
"Survey Years","Least disturbed","Moderately disturbed","Most disturbed","UPPER error bound for least disturbed","LOWER error bound for least disturbed","UPPER error bound for moderately disturbed","LOWER error bound for moderately disturbed","UPPER error bound for most disturbed","LOWER error bound for most disturbed"
"2000-2004","26.42829667","41.32385194","32.2478514","36.89327211","15.96332123","52.83524149","29.81246238","40.86058674","23.63511605"
"2008-2009","13.55423102","30.18117065","56.26459833","20.52076633","6.587695703","40.3020773","20.060264","66.45852272","46.07067395"
"Upper Midwest"
"Units: percent of stream miles"
"Survey Years","Least disturbed","Moderately disturbed","Most disturbed","UPPER error bound for least disturbed","LOWER error bound for least disturbed","UPPER error bound for moderately disturbed","LOWER error bound for moderately disturbed","UPPER error bound for most disturbed","LOWER error bound for most disturbed"
"2000-2004","26.41764334","36.72736399","36.85499267","40.39768623","12.43760044","52.83805351","20.61667446","50.9274778","22.78250755"
"2008-2009","15.59970186","21.76455478","62.63574336","24.60389233","6.595511387","29.79432528","13.73478429","73.35650762","51.9149791"
"Western Mountains"
"Units: percent of stream miles"
"Survey Years","Least disturbed","Moderately disturbed","Most disturbed","UPPER error bound for least disturbed","LOWER error bound for least disturbed","UPPER error bound for moderately disturbed","LOWER error bound for moderately disturbed","UPPER error bound for most disturbed","LOWER error bound for most disturbed"
"2000-2004","42.53113685","31.48986123","25.97900192","47.76279713","37.29947657","36.95704234","26.02268012","30.95362678","21.00437706"
"2008-2009","44.44422488","32.12390482","23.4318703","53.3651312","35.52331856","41.32876791","22.91904174","29.69653236","17.16720824"
"Xeric"
"Units: percent of stream miles"
"Survey Years","Least disturbed","Moderately disturbed","Most disturbed","UPPER error bound for least disturbed","LOWER error bound for least disturbed","UPPER error bound for moderately disturbed","LOWER error bound for moderately disturbed","UPPER error bound for most disturbed","LOWER error bound for most disturbed"
"2000-2004","48.18037558","15.08690857","36.73271585","56.6612289","39.69952226","20.91406082","9.25975632","44.81757408","28.64785762"
"2008-2009","41.64820816","14.83525316","43.51653869","52.00058977","31.29582654","20.79583558","8.874670733","53.02194324","34.01113413"