- 7 - 



SURFACE WATER QUANTITY 



Streamf low 



Streamflow in the Poplar River basin was below normal during 1987, 



assximing the recorded flow of the Poplar River at the International 



Boundary is a good indicator of basin runoff conditions. The March 



to October recorded flow volvune at the gauge was 4 350 cubic 



3 

 decametres (dam ), or 27 percent of the long-term average. A 



comparison of the flows of 1987 with those of the 1951-80 median 



flow is shown in Figure 2. 



MEDIAN OF MONTHLY MEAN DISCHARGE FOR 1951-80 I 

 MONTHLY MEAN DISCHARGE FOR 1987 



0.1 r 



0.001 

 MAR 



APR 



MAY 



JUN JUL AUG SEP OCT 



Figure 2 — Discharge during 1987 Compared with Median Discharge for 

 1951-80 for the Poplar River at International Boundary 



The recorded flow volume of the East Poplar River at the 



3 



International Boundary for 1987 was 3 700 dam , or 31 percent of 



the mean annual flow since the completion of Morrison Dam in 1975. 



