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Guidance for locating MS4s within 1990 Urbanized Area Boundaries

To determine whether your system falls within the 1990 UA boundaries, visit the following site. http://factfinder.census.gov/servlet/BasicFactsServlet.

In the box entitled “Data Sets” click the option titled 1990 Summary Tape File 3 Similar subjects from the 1990 Census. In the gray box where it indicates options, choose “Reference Maps”. Click on the Legend to change some of the settings. Be sure the drop-down box in the Boundaries tab of the Legend indicates “1990 Decennial Census”. Then, it is recommended that you uncheck everything in the list of Boundaries checkboxes, (Labels boxes can remain checked), except 1990 Urbanized Areas. Furthermore, the Features tab of the Legend allows one to view schools, hospitals, military installations, etc. Please keep in mind that these features may not completely represent entire universe of features that are actually present.

The major roads, streets and streams are checked in the Features tab by default and should remain checked in order to maintain a sense of place. Once all changes have been made to the Legend, click the “update” button, which will allow you to return to the map. A street address may be entered below the map that will allow you to zoom directly to the location in question. Please note that if your MS4 falls within the 1990 UA boundaries, you must file for coverage by June 1, 2003.

Please reference the NPDES Stormwater Program for Municipal Separate Storm Sewer Systems (MS4s) page or contact this office for more information on eligibility criteria. Additionally, you may go to the legend and change the drop-down option to “Census 2000” to obtain the 2000 UAs. Your zoom selection will remain in tact until you change it. If your MS4 lies outside the 1990 boundaries, but inside the 2000 UA boundaries, the deadline for filing is June 1, 2004.


For more information, send us an e-mail
NPDES Stormwater Program
2600 Blair Stone Road  Mail Station 3585
Tallahassee, FL, 32399
Phone (850) 245-7522

Last updated: September 21, 2011

  2600 Blair Stone Road M.S. 3500   Tallahassee, Florida 32399   850-245-8336 (phone) / 850-245-8356 (fax) 
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