Lake Pamela is the large lake that you see on Valencia West Campus as you enter the school from Kirkman Road. From about 1996 to 2000, vegetation was taken out around the lakeshore to make it look more cosmetically pleasing. The water quality quickly declined due to increased nutrient flow into the lake, making the lake unhealthy. Around 2000, the vegetation removal and cutting of the grass down to the shoreline stopped, and more trees were planted. Lake Pamela’s TSI (trophic state index) data is given in the table below (the maximum value for each year is used). The TSI of a lake measures the biological condition of the lake, or how healthy it is. Generally speaking, the lower the TSI, the healthier a lake is.