Temperature is in Celcius (22C = 72F), TDS is Total Dissolved Solids, DO is Dissolved Oxygen, Nitrate is NO3+NO2 as Nitrogen, Nitrite is NO2 as Nitrogen, Phosphate is PO4, E. Coli (number of colonies per 100 mL) measured using Easy Coliscan method. All values are reported in parts per million (mg/L), except Turbidity (JTU's or meters). Turbidity measured in NTU in 2002 and in JTU or meters in later years, NTU of 10 is crystal clear, at 50 there is haze or "see-through milky." JTU is essentially centimeters of clarity, so 60+ or 100+ indicates crystal clear water. Secchi Disk is depth in meters (m). WQI is the water quality index, a summary figure (100 is best possible). Critter counts are subjective categories of Excellent, Good, Fair, and Poor, and are based on the number of individuals and variety of species.

National Association for Cave Diving, PO Box 14492, Gainesville, FL 32604, Telephone and Fax: 386-497-3011