2017 Tributary Sampling Results

– During 2017, OWLA began a formal project of sampling the lower parts of streams and tributaries flowing into Owasco Lake

– 17 such inflows were sampled as many as eight times after significant rain runoff events

– The 2017 project set the stage for the 2018 sampling work which is searching up streams for the “hot spot” sources of the nutrients

– The following charts graphically compare the relative amount of BioAvailable Phosphorus (BAP) and the nitrogen compounds Ammonia and Nitrates that were measured in the sampled streams

– By way of comparison, Total Phosphorus (TP) in the lake itself averages 15 µg/l and nitrate compounds average around 500 µg/l.