TABLES 



Table 2.1 Recommended Water-Quality Objectives 4 



Table 3.1 Recommended Water-Quality Objectives and Excursions, 1992 Sampling 



Program, East Poplar River at International Boundary 14 



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



Project Wells Sampled at Site "C3" on Girard Creek 20 



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



Sampled at the Discharge Pipe 21 



Table 3.4 Cookson Resen/oir Storage Statistics for 1992 26 



Table 3.5 Streamflow Measurement Results for June 17, 1992 29 



FIGURES 



Figure 3.1 Discharge during 1992 as Compared with the Median Discharge for 1961-1990 



for the Poplar River at the International Boundary 6 



Figure 3.2 Flow Hydrograph of the East Poplar River at the International Boundary 7 



Figure 3.3 TDS Concentrations for 1992 Grab Samples from East Poplar River at 



International Boundary 9 



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



at International Boundary 9 



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



International Boundary 10 



Figure 3.6 Boron Concentrations for 1 992 Grab Samples from East Poplar River at 



International Boundary 11 



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



River at International Boundary 12 



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



at International Boundary 12 



Figure 3.9 Drawdown for Hart Seam Aquifer as of December 1992 16 



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



December 1992 18 



Figure 3.11 Hydrographs of Selected Wells 19 



Figure 3.12 Total Dissolved Solids in Samples from Montana Monitoring Wells 25 



Figure 3.13 Cookson Reservoir Mean Daily Water Levels for 1992 and Median Monthly 



Water Levels for 1981 -1991 27 



