Where are those codes written in law? Just wondering...
They are doing so currently in central Arkansas - the Lake Maumelle watershed to be specific. The rights of private property owners will be restricted in the use of their land to conform with the land use plan. They are doing so under the guise of environmental protections and watershed protection, but it a thin veil of horse manure.
Google Lake Maumelle Watershed and you should get thousands of hits - both the liberal envirotard web stuffing of the ArkTimes, but also from Tea Pary groups who have been fighting the encroachment. An example of what it mandates if passed: 25% of your private lot must remain undisturbed, no sturctures over 2 stories tall, the height of fences is stipulated, etc. It is not about watershed protection as much as it is about removing your contol over private land that you own.