External Sources: Land Uses
Land Use
P Loading Rate
kg / ha-yr
x

Area
(ha)
=
Total P
(kg / yr)
A
2
100
200
B
3
200
600
C
4
300
1,200
To calculate the phosphorus budget, we look at all of the different land uses in the watershed. (15 Land Uses)

Each land use contributes a certain amount of Phosphorus to the watershed every year. The rates we used were from DEP and previous CEAT reports. For each land use, we used a low and high Phosphorus loading rate as well as our best estimate for the Phosphorous load given the unique characteristics of the Pattee Pond watershed.

Multiplying the rate of Phosphorus loading by the area of each land use gives the total Phosphorus input to the watershed from that land use.