7. (15 points) two wells were drilled northwest and southwest of big springs in southern snake valley in october 2010. the attached map shows the wells, the water-level altitude abov e mean sea level of the wells in march 2011 along with the land-surface altitude above mean sea level of big springs. use the three point method to determine the direction of groundwater flow (5 points) and the slope of the water-level surface or hydraulic gradient (5 points). report your direction as the number of degrees west or east of north (for example ni̇ope) and the slope of the hydraulic gradient in feet per mile. 114 10'w 114 5w 38 44'n nevada utah map area 5585 bs-nw 557 5645 bs sw 8°40'n 3 miles 3 kilometers figure problem 7. water-level altitudes in wells northwest and southwest of big springs and land surface altitude of the springs, white pine county, nevada.