Historical
Phosphorus Data
| Here is the historical
phosphorus levels measured in past studies of Pattee Pond. The red line across the graph
represents the 12 parts-per-billion phosphorus. The Maine Department of Environmental Protection says
there is the possibility for algal blooms to occur in lakes in the range from
12 parts-per-billion phosphorus.
As you can see, for much of its recent history Pattee Pond has been
above this level, and as with the transparency there is a natural
fluctuation, though there has been a decrease seen since the maximum in
1994. This is another point
which shows that through the past efforts of the PatteeÕs Pond Association
and other residents, water quality in the lake has generally improved. However, not all is perfect, as I
will show you our findings for phosphorus levels at Site 1. [Click for next
slide] |