​pre restoration - april 2007

​post restoration - august 2013

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​Nutrient load reductions
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• Total sediment removed = 25,955 tons
• Annual sediment reduction = 109 tons
• Total stream length restored = 3,000 ft restored

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​Sediment load reductions
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• Total P removed from ecosystem = 50,498 lbs
• Total Sorbed P removed from ecosystem = 35,128 lbs*
• Annual P load reduction = 250 lbs
• Annual Sorbed P load reduction = 174 lbs*

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Scaling up
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• 797 miles of stream in Lancaster conducive to BSR-type restorations
• 100 tons of sediment could be reduced annually
• 3000 ft of stream length already restored

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​Expectations
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• In 4 - 7 years targeted BSR-type restorations in Lancaster County alone would meet the PA State phosphorus and sediment load reduction goals for 2025
• Reductions in Nitrogen (NO3) are expected to come with wetland ecosystem development 

​​Note: to meet the TMDL requirements, TP (total sorbed P) must be reduced by 1 million pounds by 2025
*Sorbed P refers to phosphorus that is loosely bound to particle surfaces, which my be released into solution under reducing conditions