b'Groundwater Challenges at a GlanceOur groundwater comes from:Groundwater is typically replenished by rainfallLake Michiganseeping into the groundA thick clay layer above our bedrock aquifer prevents it from being replenishedGlacial AquiferOur bedrock aquifer cannot pull water from Lake Michigan because they are not connectedBedrock AquiferOur geologic conditions, along with pumping rates, are causing:Clay layer Did You Know.More information on the Phase I and Phase II Groundwater Study results and Ottawa Countys Groundwater Story can be found in Appendix B, and online at miottawa.org/groundwater13print plan.13.indd 13 2/19/2020 12:13:51 PM'