TABLE OF CONTENTS 



Highlights for 1994 ill 



1.0 Introduction 1 



2.0 Committee Activities 2 



2.1 Membership 2 



2.2 Meetings 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 6 



3.2.1 Streamflow 6 



3.2.2 Apportionment 7 



3.2.3 Minimum Flows 7 



3.2.4 On-Demand Release 8 



3.2.5 Water Quality 9 



3.2.5.1 Total Dissolved Solids 9 



3.2.5.2 Boron 12 



3.2.5.3 Other Water-Quality Variables 14 



3.3 Groundwater 16 



3.3.1 Operations 16 



3.3.2 Ground-Water Levels 17 



3.3.2.1 Saskatchewan 17 



3.3.2.1.1 Exploration Activities 20 



3.3.2.2 Montana 21 



3.3.3 Ground-Water Quality 22 



3.3.3.1 Saskatchewan 22 



3.3.3.2 Montana 27 



3.4 Cookson Reservoir 28 



3.4.1 Storage 28 



3.4.2 Water Quality 30 



3.5 Air Quality 30 



3.6 Quality Control 30 



3.6.1 Streamflow 30 



3.6.2 Water Quality 31 



4.0 References Cited 33 



ANNEXES 



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



2.0 Poplar River Cooperative Monitoring Arrangement, Technical Monitoring 



Schedules, 1995, Canada-United States A2-1 



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



4.0 Metric Conversions A4-1 



