Indiana Watersheds Used for Drinking Water
Please read the instructions below, and then click here to go to the Atlas. Use Internet Explorer version 5.0 or higher to have full function of the Atlas.
To Use the Map Watch the introductory video for the best overview of the site Zoom: First, zoom in to the area you are interested in. More information (more detailed roads, streams, city boundaries) will appear as you zoom in. You can zoom in by (1) Clicking on the + in the bottom left, or (2) Rolling your mouse wheel forward. Pan: To move around the map, click and drag the map. (This only works in Internet Explorer.) Identify Watersheds: Click on the watershed, and a popup window will appear with the following information: · Community (the city or town whose water supply comes from the watershed) · Water Source (the name of the river, stream, or lake used) · Additional communities served (In most cases this is blank, but if other communities purchase the water they are listed here) · Surrounding watersheds (Larger watersheds that surround the watershed named are listed here. This is inconvenient, but necessary because the map does not show two watersheds in the same place.) · Water system name (the official name of the system) Search the Map This is a powerful feature. By clicking on “advanced search” you can search by any of the properties listed above, and the map will automatically zoom to that feature.	What are these watersheds? These are the watersheds for community water supply systems that provide drinking water from surface water sources (streams, rivers, or reservoirs). Note: Watersheds for Lake Michigan (source water for Hammond, Lowell, Whiting, East Chicago, Indiana-American Northwest, and Michigan City) and the Ohio River (source water for Evansville) are so large that they are not included on these maps. Why are these watersheds important? These watershed areas can affect water that people drink. Activities within the watershed, such as the application of chemicals,  have the potential to enter the lake or river that supplies tap water for communities downstream. In areas of the state where no watersheds are shown, all communities use well water rather than surface water.
For more information contact Jane Frankenberger (frankenb@purdue.edu) Purdue Equal Opportunity Statement

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