TABLE OF CONTENTS 



Highlights for 1992 iii 



1.0 Introduction 1 



2.0 Committee Activities 2 



2.1 Membership 2 



2.2 l\/leetings 2 



2.3 Review of Water-Quality Objectives 3 



2.4 Data Exchange 5 



3.0 Water and Air: Monitoring and Interpretations 5 



3.1 Poplar River Power Station Operation 5 



3.2 East Poplar River 5 



3.2.1 Streamflow 5 



3.2.2 Apportionment 6 



3.2.3 Minimum Flows 7 



3.2.4 On-Demand Release 8 



3.2.5 Water Quality 8 



3.2.5.1 Total Dissolved Solids 8 



3.2.5.2 Boron 11 



3.2.5.3 Other Water-Quality Variables 13 



3.3 Groundwater 15 



3.3.1 Operations 15 



3.3.2 Ground-Water Levels 15 



3.3.2.1 Saskatchewan 15 



3.3.2.2 Montana 17 



3.3.3 Ground-Water Quality 19 



3.3.3.1 Saskatchewan 19 



3.3.3.2 Montana 25 



3.4 Cookson Reservoir 26 



3.4.1 Storage 26 



3.4.2 Water Quality 27 



3.5 Air Quality 28 



3.5.1 Saskatchewan Environment and Resource Management 28 



3.5.2 SaskPower Corporation 28 



3.6 Quality Control 29 



3.6.1 Streamflow 29 



3.6.2 Water Quality 29 



4.0 References Cited 31 



ANNEXES 



1 .0 Poplar River Cooperative Monitoring Arrangement, Canada-United States A1 -1 



2.0 Poplar River Cooperative Monitoring Arrangement, Technical Monitoring 



Schedules, 1993, Canada-United States A2-1 



3.0 Recommended Flow Apportionment in the Poplar River Basin A3-1 



4.0 Metric Conversions A4-1 



