Based on the analysis of the data collected thus far, the increase in phosphorus loading to water bodies, especially in the 30 Lakes Watershed District appears to be coming from atmospheric deposition.  Statistical analysis shows a correlation between concentrations of phosphorus and the cloud base altitude of the storm event.  The lower the air mass stayed during the 120 hour backward trajectory, the higher the phosphorus concentration. The opposite was found in that the higher the air mass stayed during the trajectory, the lower the phosphorus concentration.  Through manipulation of the HYSPLIT data, areas less than 500 meters were identified as a starting point for source identification.  Location trends were also revealed.  Storm events with high phosphorous concentrations had a tendency to originate in and travel through Southwestern/Midwest States at elevations less than 500 meters and pass through large populated areas.  On the flip side, storm events with low phosphorus concentrations had a tendency to originate and travel through the Northwest states or Canada and were at elevation greater than 500 meters.  As for local phosphorus loading, the 30 Lakes watershed district was the highest of the four locations followed by the Bartusek house, Red Lake, and the Courthouse respectively.

It is recommend that the study be continued for one to two more years.  This will provide a more complete data set and comprehensive storm event tracking.  Also, with the data collected we will be able to further pinpoint trends and reoccurring locations.  The goal once the data is analyzed is to be able to breakdown and identify the isolated areas of specific sources.