thumbnail

An overview of urban stormwater-management practices in Miami-Dade County, Florida

Open-File Report 2004-1346

By:

Links

Abstract

Agencies with jurisdiction over stormwater-management systems in Miami-Dade County, Florida, include the Miami-Dade Department of Environmental Resources Management (DERM), South Florida Water Management District (SFWMD), and Florida Department of Transportation (FDOT). These agencies are primarily concerned with minor drainage systems that handle runoff from storms with return periods of 10 years or less (DERM), major drainage systems that handle runoff from storms with return periods of 25 years or more (SFWMD), and runoff from major roadways (FDOT). All drainage regulations require retention of at least a specified water-quality volume (defined volume of surface runoff), typically the first inch of runoff. The DERM and FDOT intensity duration frequency (IDF) curves used as a basis for design are similar but different, with differences particularly apparent for short-duration storms. The SFWMD 25-year 3-day storm incorporates an IDF curve that is substantially different from both the IDF curves of DERM and FDOT. A DERM methodology for designing closed exfiltration systems is applicable to storms of 1-hour duration, but is not applicable to all storms with a given T-year return period. A trench design that is applicable to all storms with a given T-year return period is presented as an alternative approach.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
An overview of urban stormwater-management practices in Miami-Dade County, Florida
Series title:
Open-File Report
Series number:
2004-1346
Edition:
-
Year Published:
2004
Language:
ENGLISH
Description:
17 p.
Scale:
24000