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The phosphorus budget could
then be broken down to its components.
The largest source of p loading in LPN are the 3 pt source inputs:
Great Pond, Beaver Pond, and Whittier Pond together account for 55%of the total
mass of P. Great Pond alone
provides 47% of this (POINT).
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With the water budget
results, this confirms that the water quality of LPN is determined to a
large degree by the water quality of Great Pond. CEAT in Summer 2006 measured the P concentrations in
Great Pond to be 9.3 ppb, significantly higher than LPN. This suggests that the P level due
to this point source input to LPN may increase.
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16% of the phosphorus
loading came from sediment release (POINT). This value is highly dependent on the stability of water
chemistry factors such as pH and DO.
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The remaining 24 percent
was related to land use (POINT).
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