Lloyd Bollinger took Maureen and I on a flight over the Mississippi River Alton Pool on July 31st, 2009. During the flight we tried to get some shots of the various wing dikes while the water was low. Here are some aerial photos to give you an idea of where they are. You can download an Adobe Acrobat file of all the pictures by clicking here, file size of the pdf file is about 4.4 MB. These are for information only, not to be trusted for navigation.
bolter_1	bolter_2	bolter_3	bolter_4
cuivre_1	cuivre_2	enterprise_island_1	enterprise_island_2
enterprise_island_3	enterprise_island_4	horseshoes_above_iowa_1	horseshoes_above_iowa_10
horseshoes_above_iowa_11	horseshoes_above_iowa_2	horseshoes_above_iowa_3	horseshoes_above_iowa_4
horseshoes_above_iowa_5	horseshoes_above_iowa_6	horseshoes_above_iowa_7	horseshoes_above_iowa_8
horseshoes_above_iowa_9	portage_island_1	portage_island_2	portage_island_3
portage_island_4	two_branch_1	two_branch_2	two_branch_3
two_branch_4	two_branch_5	z_dike_above_mason_1	z_dike_above_mason_2