Table of Contents

Executive Summary
Introduction
Quality Assurance
State of the Water Quality
Conclusions - State of Water Quality
Recommendations for Water Quality Management
Figure 3 Total Phosphorus (average in the water column before stratification)
Figure 4 Total dissolved phosphorus from Cusheon Lake
Figure 5 Dissolved Ortho-phosphorus from Cusheon Lake
Figure 6 Dissolved ammonia from Cusheon Lake
Figure 7 Kjeldahl nitrogen from Cusheon Lake
Figure 8 Nitrate/Nitrite from Cusheon Lake
Figure 9 Total nitrogen from Cusheon Lake
Figure 10 Ammonia:nitrate ratio from Cusheon Lake
Figure 11 N:P ratio from Cusheon Lake
Figure 12 Total calcium from Cusheon Lake
Figure 13 Total organic carbon from Cusheon Lake
Figure 14 Total inorganic carbon from Cusheon Lake
Figure 15 Dissolved chloride from Cusheon Lake
Figure 16 True colour from Cusheon Lake
Figure 17 Extinction depth from Cusheon Lake
Figure 18 Total iron from Cusheon Lake
Figure 19 Total magnesium from Cusheon Lake
Figure 20 Total manganese from Cusheon Lake
Figure 21 Dissolved oxygen from Cusheon Lake
Figure 22 pH from Cusheon Lake
Figure 23 Total residues from Cusheon Lake
Figure 24 Dissolved silica from Cusheon Lake
Figure 25 Dissolved sodium from Cusheon Lake
Figure 26 Specific conductivity from Cusheon Lake
Figure 27 Water temperature from Cusheon Lake
Figure 28 Turbidity from Cusheon Lake
Table 1 Summary of water quality data for
Cusheon Lake (EMS site 1100123)
Table 2 Summary of Capital Health Region
fecal coliform data (number/100 mL)
for Cusheon Lake
References

Canada - British Columbia
Water Quality Monitoring Agreement

Water Quality Section
Water Management Branch
Environment and Resource Management Department
Ministry of Environment, Lands and Parks

September, 1999

Canadian Cataloguing in Publication Data

Holms, G. B.
State of water quality of Cusheon Lake, 1974-1999

At head of title: Canada-British Columbia Water Quality Monitoring Agreement.

Author: Holms, G. Bruce. Cf. p.
Co-published by British Columbia, Ministry of Environment, Lands and Parks.
Includes bibliographical references: p.
ISBN 0-7726-3191-3

1. Water quality - British Columbia - Cusheon Lake. 2. Water - Pollution - British Columbia - Cusheon Lake. I. Canada. Environment Canada. II. British Columbia. Ministry of Environment, Lands and Parks. III. Canada-British Columbia Water Quality Monitoring Agreement. IV. Title.

TD227.B7H654 1999 363.73942'0971128 C97-960070-7