TABLES 



Table 2.1 Water-Quality Objectives 4 



Table 3.1 Recommended Water-Quality Objectives and Excursions, 1 994 Sampling 



Program, East Poplar River at International Boundary 15 



Table 3.2 Water-Quality Statistics for Water Pumped from Supplementary Water Supply 



Project Wells 22 



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



Sampled at the Discharge Pipe 23 



Table 3.4 Cookson Reservoir Storage Statistics for 1994 29 



Table 3.5 Streamflow Measurement Results for November 3, 1994 31 



FIGURES 



Figure 3.1 Discharge during 1994 as Compared with the Median Discharge for 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 TDS Concentrations for 1 994 Grab Samples from East Poplar River at 



International Boundary 10 



Figure 3.4 Three-Month Moving, Flow-Weighted TDS Concentration for East Poplar River 



at International Boundary 10 



Figure 3.5 Five- Year Moving. Flow-Weighted TDS Concentration for East Poplar River at 



International Boundary 11 



Figure 3.6 Boron Concentrations for 1 994 Grab Samples from East Poplar River at 



International Boundary 12 



Figure 3.7 Three-Month Moving, Flow-Weighted Boron Concentration for East Poplar 



River at International Boundary 13 



Figure 3.8 Five-Year Moving, Flow-Weighted Boron Concentration for East Poplar River 



at International Boundary 14 



Figure 3.9 Drawdown for Hart Seam Aquifer as of December 1994 18 



Figure 3.10 Cone of Depression in the Empress Sands Due to the Salinity Control Project 



as of December 1994 19 



Figure 3.11 Hydrographs of Selected Wells 21 



Figure 3.12 Total Dissolved Solids in Samples from Montana Monitoring Wells 28 



Figure 3.13 Cookson Reservoir Mean Daily Water Levels for 1994 and Median Monthly 



Water Levels for 1981-1991 29 



