They are still all available, but with much more information and many GIS layers if you want to use the additional tools.
Below is the easiest way I know that will get you to any MDC conservation area map in four easy steps.
1) Google search for: "Missouri Department of Conservation"
2) Click on Discover Nature among the top row of buttons and choose "Places to Go"
In the drop down box under Places to Go choose the one titled "Find Places to Go in MO" and type the area name into the Area Name box and click GO in the bottom of the box.
3) This new page is titled Find Great Places. Click on the teardrop icon that is on the map. It should be on the place you selected.
In the small window that opens up Click on the blue clickable (hypertext) text in the upper right hand corner.
This takes you to the area information page for your selected area.
4) From the Information Page for your selected area Scroll down to the third blue ribbon bar and click on the Area Map (pdf) to go to the map for the area. This is the old set of maps that used to be easy to find.