Johnson County is the fastest growing area in Kansas, and the rapid pace of development has a big impact on the Kansas River. Below is a static map and at the bottom of the page is a Google Earth version that is interactive.
- Johnson County is highlighted in red
The Lower Kansas River Watershed is outlined in white
Within the watershed the water that falls on Johnson County drains to the Kansas River, as shown by the yellow arrows
The remainder of Johnson County, outside of the Kansas River Watershed, drains to the Missouri River