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Figure 3--Leading sources of impairment of rivers and streams for Southern States from 1988 to 1998. Source: U.S. Environmental Protection Agency 1990, 1992, 1994, 1996, 1998a, 2000a.

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	source	percent of impaired miles
Alabama	Municipal	19%
	Storm sewers/runoff	8%
	Industrial	9%
	Agriculture	29%
	Hydrologic/habitat modification	9%
	Resource extraction	14%
	Other	13%
Arkansas	Municipal	8%
	Agriculture	71%
	Resource extraction	7%
	Other	14%
Florida	Storm sewers/runoff	18%
	Land disposal	14%
	Agriculture	20%
	Hydrologic/habitat modification	12%
	Resource extraction	7%
	Construction	14%
	Other	16%
Georgia	Municipal	22%
	Storm sewers/runoff	56%
	Natural	13%
	Other	8%
Kentucky	Municipal	20%
	Storm sewers/runoff	11%
	Land disposal	13%
	Agriculture	26%
	Resource extraction	20%
	Other	10%
Louisiana	Municipal	17%
	Storm sewers/runoff	9%
	Industrial	12%
	Land disposal	9%
	Agriculture	19%
	Hydrologic/habitat modification	10%
	Resource extraction	9%
Mississippi	Agriculture	75%
		6%
	Municipal	4%
	Other	16%
North Carolina	Storm sewers/runoff	11%
	Industrial	6%
	Agriculture	59%
	Construction	7%
	Other	12%
Oklahoma	Storm sewers/runoff	6%
	Land disposal	6%
	Agriculture	48%
	Hydrologic/habitat modification	16%
	Resource extraction	14%
	Other	9%
South Carolina	Municipal	18%
	Storm sewers/runoff	24%
	Industrial	15%
	Agriculture	29%
	Other	14%
Tennessee	Municipal	10%
	Storm sewers/runoff	10%
	Agriculture	24%
	Hydrologic/habitat modification	18%
	Channelization	17%
	Other	21%
Texas	Municipal	40%
	Storm sewers/runoff	10%
	Industrial	28%
	Agriculture	11%
	Natural	9%
	Other	11%
Virginia	Municipal	8%
	Storm sewers/runoff	17%
	Agriculture	39%
	Resource extraction	8%
	Silviculture	10%
	Natural	10%
	Other	8%