WATER QUALITY REPORT HEALTH OF CANANDAIGUA LAKE AND TRIBUTARY STREAMS by Dr. Bruce A. Gilman (
[email protected]) Department of Environmental Conservation and Horticulture Finger Lakes Community College 4355 Lakeshore Drive Canandaigua, New York 14424 and Kevin Olvany (
[email protected]) Watershed Program Manager 205 Saltonstall Street Canandaigua, New York 14424 Prepared for: Canandaigua Lake Watershed Council 205 Saltonstall Street Canandaigua, New York 14424 Table of Contents: Executive Summary . 3 Acknowledgments . List of Figures . List of Tables . Introduction to Water Quality. Chapter 1 – Canandaigua Lake Research Canandaigua Lake Sampling and Monitoring Parameters . Methods . Results and Discussion . Chapter 2 – Tributary Research Methods . Results and Discussion . Recommendations and Topics for Future Research . Literature Cited . 2 Executive Summary: 1. Over the last three years, the health of Canandaigua Lake remained good to excellent. Dissolved oxygen was available throughout the water column at all monitoring times and often was at or near 100% saturation, ideal conditions for the survival of aquatic life. Seasonal temperature profiles characterized the development of thermal stratification typical of deep lakes. The pH was always above 7.00 (due to high buffer capacity of lake water), helping to protect the lake from the damaging effects of acidic precipitation storm events. Conductivity, a measure of ions dissolved in the water, averaged between 350 and 400 μS/cm. Recent increases in conductivity may stem from watershed development activities. Total phosphorus, the critical nutrient governing lake productivity and the element most responsible for lake eutrophication, was often below 10 μg/L during the monthly sample periods. Algal productivity, estimated by the concentration of chlorophyll a, ranged from 0.62 to 9.48 μg/L with a mean of 2.41 μg/L.