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Cedar Creek and Neighboring Watersheds

Maps from the USGS National Atlas of the United States

The following maps are arranged in five levels to "zoom out" from Level One, Cedar Creek's immediate neighborhood, to Level Five, showing the three major watersheds that drain Indiana.


Level One: Cedar Creek from its source in DeKalb County to its confluence with the St. Joseph River at the Cedarville Reservoir in Allen County.
cedar creek outline map


Level One: Boundary between the Cedar Creek and Eel River watersheds. At the end of the last ice age, Cedar Creek and the Eel River were a single stream. The Eel River watershed is shown in orange-red. The yellow line is the boundary between the St. Joseph watershed, which includes Cedar Creek, and that of the upper Maumee.
cedar creek/eel river watershed boundary


Level Two: Outline map showing proximity of Cedar Creek to the Eel River just to the southwest. At the end of the last ice age, Cedar Creek "pirated" the headwaters of the Eel and shifted the drainage of 175,000 acres from the Wabash watershed to that of the St. Joseph-Maumee system.


Level Two: The Eel River-Wabash watershed is shown in orange-red. The area in blue-gray drains into the Great Lakes. Yellow lines show individual river watersheds. The red line is the boundary between the Lake Erie and Lake Michigan watersheds.


Level Three: The great wedge bounded by the St. Joseph River on the northwest and the St. Mary's River on the southwest and coming to a point where the two join at Fort Wayne to form the Maumee, corresponds to the boundaries of the Erie Lobe of the Wisconsin glacier.


Level Three: Watershed boundaries: blue-gray for the Great Lakes, orange-red for the Eel-Wabash-Ohio; and tan for the Kankakee-Illinois-Mississippi. Yellow lines show individual river watersheds. The red line is the boundary between the Lake Erie and Lake Michigan watersheds.


Level Four: The river systems of the Indiana-Ohio-Michigan tri-state area.


Level Four: Major watersheds of the Indiana-Ohio-Michigan tri-state area: blue-gray for streams that travel to the Great Lakes; orange-red for the Wabash-Ohio; and tan for the Kankakee-Illinois-Mississippi. The red line is the boundary between the Lake Erie and Lake Michigan watersheds.
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Level Five: Indiana's major watersheds: the Great Lakes watershed is shown in blue-gray; the Wabash-Ohio watershed is in orange-red; and the Kankakee-Illinois-Mississippi watershed is in tan.

These maps were obtained from the

United States Geological Survey

National Atlas of the United States

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