Stormwater Permitting Map - FAQ
The map representations are the best available as of July 2012 (2011 corporate boundaries). Please check with the local government (town, city or county) in your location to verify local stormwater requirements. Areas subject to Stormwater Post-Construction Permitting are based on existing programs and Session Laws 2006-246 and 2011-220. This map is intended as a tool to assist you in making a final determination about your stormwater permitting responsibilities. More current information supersedes any inaccuracies obtained here.
Frequently Asked Questions
What are the boundaries based on?
The map now includes more recent municipal boundaries from 2012 Powell Bill Data (reflect 2011 corporate boundaries), available ETJ data from 2010, and urbanized areas from both the 2000 and 2010 US Census. We have not acquired more recent ETJ data, and we modified some ETJ boundaries to remove erroneous slivers or overlaps with jurisdictions or other small areas that can cause problems with Google’s display. That’s why it is important for all users to check with the local government (city and/or county) to verify current boundaries.
The 2010 Census delineated new urbanized areas and updated populations for cities and towns. When will the Division do another update to show bigger municipal spheres of influence (MSIs) and new cities that must now come into the Phase II MS4 federal program?
We plan to update the stormwater permitting map again at the end ofyear 2013 to reflect those changes, as staff time and resources allow. The Division also intends to notify all local governments affected by new areas where stormwater post-construction requirements will apply prior to making those changes in our map viewer.
What happens when there are updates or changes before the Division updates its map viewer?
It is important for all users tocheck with the local government (town, city and/or county) to verify current boundaries and toverify thearea is notin a newly-classified HQW or ORW watershed affected by State Stormwater permit rules. Please see the DWR Planning Section website to find the latest information on re-classifications.
Also, be sure to check the “Important Updates and Corrections” document above the Stormwater Permitting Interactive Map link on our website.
Where can I get the GIS stormwater permitting reference data layer for this map?
Go to the GIS and Maps section of the Stormwater Permitting Unit’s website. Under the Stormwater GIS Data section of the page, we have made the GISdata layer available (sw-ref20121231-DWQ-SPU.shp, about 32 MB).
Is there someone I can call for help?
Please contact Bethany Georgoulias in the Stormwater Permitting Unit at (919) 807-6372 or by e-mail.