TABLES 



Table 2.1 Water-Quality Objectives 5 



Table 3.1 Recommended Water-Quality Objectives and Excursions, 2000 Sampling 



Program, East Poplar River at International Boimdary 18 



Table 3.2 Water-Quality Statistics for Water Pumped from Supplementary 



Water Supply Project Wells 27 



Table 3.3 Water-Quality Statistics for Water Pumped from Salinity Control Project 



Wells Sampled at the Discharge Pipe 28 



Table 3.4 Cookson Reservoir Storage Statistics for 2000 32 



Table 3.5 Streamflow Measurement Results for September 19, 2000 35 



Table 3.6 East Poplar River Joint Water-Quality Sample Results for July 1 0, 2000 36 



FIGURES 



Figure 3.1 Discharge during 2000 as Compared with the Median Discharge from 



1931-1990 for the Poplar River at International Boundary 6 



Figure 3.2 Flow Hydrograph of the East Poplar River at International Boundary 8 



Figure 3.3 Cumulative Volume Hydrograph of On-Demand Release 9 



Figure 3.4 TDS Concentration for 2000 Grab Samples from East Poplar River at 



International Boundary 1 1 



Figure 3.5 Three-Month Moving Flow- Weighted TDS Concentration for East Poplar 



River at International Boimdary 1 1 



Figure 3.6 Five- Year Moving Flow- Weighted TDS Concentration for East Poplar River 



at International Boundary 13 



Figure 3.7 Daily TDS Concentration, 1 989 to 2000, East Poplar River at International 



Boundary 13 



Figure 3.8 Boron Concentration for 2000 Grab Samples from East Poplar River at 



International Boimdary 15 



Figure 3.9 Three-Month Moving Flow- Weighted Boron Concentration for East Poplar 



River at International Boundary 15 



Figure 3.10 Five- Year Moving Flow- Weighted Boron Concentration for East Poplar 



River at International Boundary 16 



Figure 3.11 Daily Boron Concentration, 1 989 to 2000, East Poplar River at 



International Boundary 16 



Figure 3.12 Supplementary Water Supply 19 



Figure 3.13 Pumpage from Salinity Control Project 21 



Figure 3.14 Drawdown for Hart Seam Aquifer as of December 2000 23 



Figure 3.15 Cone of Depression in the Empress Sands Due to the Salinity Confrol Project 



as of December 2000 24 



Figure 3.16 Hydrograph of Selected Wells: Fort Union-Hart Coal Aquifers 25 



Figure 3.17 Hydrograph of Selected Wells: Alluvium and Fox Hills Aquifers 26 



Figure 3.18 Total Dissolved Solids in Samples from Montana Wells 3 1 



Figure 3.19 Cookson Reservoir Daily Mean Water Levels for 2000 and Median 



Monthly Water Levels, 1981-1991 33 



