Figure problem 9 is a map showing the groundwater altitudes in wells screened in an unconfined aquifer in milwaukee, wisconsin. the aquifer is in good hydraulic connection with lake michigan, which has a surface altitude of 580 ft above sea level. lakes and streams are also shown on the map. (15 points) make a water table map with a contour interval of 50 ft, starting at 550 ft. (5 points) why do you suppose that ground-water levels are below the lake michigan surface elevation in part of the area? a. b. 971 859 614 685 648 668 752 959 842 635 631 718 832 . 880 861 773 830 745 856 853 665 606 768 592 732 560 908 747 830 858 729 535 906 803 722 -726 670 815 845 767 886 693 876 6 806 726 655 889 700 656 716 813 814 809 768 703 73 804 785 700 704 676 665 583 835 03 785 745 695 7 735 694 683 662. 78 775 654 810 r 19 e r 20 e r 21 e r 22 e miles