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North Carolina Hog Farming & Water Quality: Time Series Analysis Fails to Reveal Significant Impacts

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The data discussed in this report indicate that nutrient levels in the Black and Northeast Cape Fear watersheds are elevated above levels expected prior to farming and livestock. However, these data also indicate that the impacts from intensive confinement hog farms (and the rapid expansion of the hog population during the 1980s and 1990s) do not appear to be as severe as previously believed. This suggests that the effects may be no greater than farming operations that have existed in these watersheds for decades.

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