2.4 Data Exchang e 



The Committee is responsible for assuring exchange of data between governments. The exchange 

 of monitoring information was initiated in the first quarter of 1981 and was an expansion of the 

 informal quarterly exchange program initiated between the United States and Canada in 1976. Until 

 1991 , data were exchanged on a quarterly basis. At the request of the Committee, the United States 

 and Canada agreed to replace the quarterly exchange of data with an annual exchange effective at 

 the beginning of the 1 992 calendar year 



Henceforth, data will be exchanged once each year as soon after the end of the calendar year as 

 possible. However, unusual conditions or anomalous information will be reported and exchanged 

 whenever warranted. No unusual conditions occurred during 1992 which would warrant special 

 reporting. 



3.0 WATER AND AIR: MONITORING AND INTERPRETATIONS 



3.1 Poplar River Power Station Operation 



In 1992, the average capacity factor for Unit No. 1 was 92.8 percent. The average capacity factor for 

 Unit No. 2 was 88.2 percent. The capacity factors are based on the maximum power generation 

 rating of 297.8 MW/h for Unit No. 1 and 294 MW/h for Unit No. 2. Total power generated from both 

 units was 4 692 000 gross megawatt-hours which is about 103 percent of 1991 power and 102 

 percent of 1 990 power 



3.2 East Poplar River 

 3.2.1 Streamflow 



Streamflow in the Poplar River basin was below normal in 1992. The f^arch to October recorded 

 flow of the Poplar River at the international Boundary, an indicator of natural flow in the basin, was 

 2 080 cubic decametres which was 21 percent of the 1931 to 1991 median seasonal flow. For the 



