25 



3.3.2.2 Montana 



Water-levels in monitoring wells (6, 7, 9. 13. 16. 17. 19. and 22) that penetrate the Fort Union 

 Formation and/or Hart Coal Seam were rising during 1997 and 1998. and have leveled off or decreased 

 during the last four years (1999 to 2002). Hydrographs of selected Fort Union/Hart Coal wells (6, 7. 17, 

 and 19) are shown in figure 3.16. 



Hydrograph of Selected Wells 



Fort Union - Hart Coal Aquifers 



-Well 6 

 -Well 7 

 -Well 17 

 -Well 19 



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



