# Subcontinental divide

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The **Subcontinental Divide** is a [drainage divide](/source/Drainage_divide) in southeastern [Wisconsin](/source/Wisconsin) running north to south along the [Waukesha County](/source/Waukesha_County,_Wisconsin)/Milwaukee County border (mirroring Sunnyslope Rd. in [New Berlin, WI](/source/New_Berlin,_WI)). It is a watershed between two [drainage basins](/source/Drainage_basin). Water falling to the east of the divide flows to the east towards [Lake Michigan](/source/Lake_Michigan) and water falling to the west of the divide flows west towards the [Mississippi River](/source/Mississippi_River), eventually flowing into the [Gulf of Mexico](/source/Gulf_of_Mexico). Although 62 percent of the area's population lives on the eastern side of the divide, due to the projected growth west of the divide, [water shortages](/source/Water_scarcity) west of the divide have become a growing concern due to [radium](/source/Radium) contamination in the area's [aquifers](/source/Aquifers).[1] To overcome the water shortage problems posed by the subcontinental divide, [New Berlin](/source/New_Berlin,_WI) has reached an agreement with the City of [Milwaukee](/source/Milwaukee) to expand their water purchases and receive safe drinking water from [Lake Michigan](/source/Lake_Michigan), on the provision as agreed upon by the [Great Lakes Compact](/source/Great_Lakes_Compact), that the treated water be returned to the [Great Lakes Basin](/source/Great_Lakes_Basin). [2]

## References

1. [http://www.wibuilder.com/water-04/water.html](http://www.wibuilder.com/water-04/water.html) Communities thirst for key to development; [Wisconsin BUILDER](http://www.wibuilder.com/); Retrieved May 4, 2009

1. ["City of New Berlin 2006 Water Quality Report"](http://www.newberlin.org/ImageLibrary/Public/Utility/2006_WATER_QUALITY_May_07.pdf) (PDF). [Archived](https://web.archive.org/web/20080624233641/http://www.newberlin.org/ImageLibrary/Public/Utility/2006_WATER_QUALITY_May_07.pdf) 2008-06-24 at the Wayback Machine. Retrieved 2008-04-08.

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Adapted from the Wikipedia article [Subcontinental divide](https://en.wikipedia.org/wiki/Subcontinental_divide) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Subcontinental_divide?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.