Environmental Rules in Clay County, MO (2026)
2 rules for unincorporated Clay County, Missouri.
Verified from official government sources
Stormwater Management
Land disturbance of one acre or more in Missouri needs a state construction stormwater permit from the Department of Natural Resources before work starts. Unincorporated Clay County adds local stormwater plan review through its Land Development Code.
Clay County Stormwater & Land Disturbance Rules
Some RestrictionsMissouri DNR, Construction Land Disturbance Permits
Land disturbance permits are required for construction disturbance activities of one or more acres or construction activities that disturb less than one acre when part of a larger common plan of development or sale that will disturb a cumulative total of one or more acres over the life of the project.
Erosion Control
Any construction project in unincorporated Clay County that disturbs one acre or more, or less than an acre as part of a larger development plan totaling an acre or more, needs a Missouri DNR land disturbance stormwater permit plus a written stormwater pollution prevention plan before grading starts, on top of the county's own land disturbance permit fee.
Clay County Land Disturbance Permit Rules
Some RestrictionsMo. Dept. of Natural Resources, Land Disturbance Stormwater General Permit (MO-RAxxxxx / MO-R100xxx)
Land disturbance activities include clearing, grubbing, excavating, grading, filling and other activities that result in the destruction of the root zone and/or land disturbance activity that is reasonably certain to cause pollution to waters of the state. Land disturbance permits are required for construction disturbance activities of one or more acres or construction activities that disturb l...
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