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Gutters · Tamiami

Gutters in Tamiami, FL

A 5-minute downpour in a 10-year storm falls at 10.9 inches an hour in Tamiami, according to NOAA Atlas 14. That is a burst that can overrun a small gutter in minutes. Gutter size, downspout count and where the water ends up all matter more here than they would in a drier town.

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Updated October 2026

Aerial view of flat green wetland with a long straight road and canal under cloudy sky.
Drone view of a single-story home with a brown-gray shingle roof and box vents under large oak trees, a metal carport roof in the corner and a street behind.Our work
Photo: AER Shark Slough looking S to ENP across Hwy41, NPSPhoto by Everglades NPS from Homestead, Florida, Public domain, cropped

Sizing for the storm

How much water your gutters have to carry in Tamiami

Tamiami sees a 25-year 5-minute burst of 12.6 inches an hour and a 100-year burst of 15.4. The 1-hour 10-year rain falls at 3.34 inches an hour, and a 24-hour 10-year storm drops 8.47 inches. Those are the numbers a gutter has to handle, not average summer rain.

Close three-quarter view of a new white seamless K-style aluminum gutter along the eave of a single-story stucco ranch home with a dark shingle roof, live oaks and cumulus sky behind (illustration)Illustration

Illustration: seamless k style white

Miami Intl Airport averages 67.41 inches of rain a year, and 76.6 percent of it falls from May through October. Rainfall peaks in June, when the total reaches 10.51 inches. Your gutters do most of their work in those six months.

Plumbing code sizes horizontal gutters by roof flow, and a 6-inch half-round at 1/8 inch per foot carries about 110 gallons per minute. By our arithmetic, a 5-inch size carries 74 gallons, so stepping up to 6 inches adds about 49 percent capacity. Sizing against the 5-minute burst instead of an older table changes how much roof one gutter can serve by more than twice.

Discharge and code

Downspout drainage and site runoff in Tamiami

Downspouts in Tamiami must discharge at least one foot from the wall, by underground pipe, tail extension or splash block. Check that yours do this before storm season starts in June. A downspout that dumps at the foundation is the most common reason water collects beside a house.

About 56.5 percent of housing units here are single-family detached, so most roofs have their own eaves and downspouts to manage. The median home dates to 1984, which suggests many gutters are original or close to it. Look for loose hangers and joints that no longer hold.

  • A 2-by-2-inch leader carries 30 gallons per minute, which is too small for most roof areas here.
  • A 4-inch round leader carries 192 gallons per minute, so a single leader can serve a larger roof section.
  • Add half the area of any wall that sheds rain onto the roof when you size the leaders.

Keeping gutters clear

Leaves, pollen and cleaning in Tamiami

Southern live oaks shed litter, and oak pollen peaks in March and April. Trade guidance says to clean gutters at least twice a year and more often under overhanging trees. Clean after the spring leaf drop, before June, and again once the autumn needle fall ends.

Rain on your roof

Preset: 8.47 inches, the 10-year 24-hour rain (NOAA Atlas 14 at Tamiami).

10,554 gallons run off that roof, all of it toward the gutters and downspouts.

Math: square feet × inches × 0.623 gallons.

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Questions

Gutters in Tamiami: questions

How hard does it rain in Tamiami?

A 5-minute downpour in a 10-year storm falls at 10.9 inches an hour, and the 100-year burst reaches 15.4. A 24-hour 10-year storm drops 8.47 inches. Gutters sized for ordinary rain can overflow during these bursts, so size for the storm, not the average day.

Source: NOAA Atlas 14 Volume 9 version 2, partial-duration intensity estimates at the Tamiami 2020 Census internal point (25.7563, -80.4026), read Oct 5, 2026

Related: Gutters

How big should gutters be on a Tamiami home?

The plumbing code sizes gutters by roof flow. A 6-inch half-round at 1/8 inch per foot carries about 110 gallons per minute, while a 5-inch carries 74. Ask your roofer which design basis they used, since sizing to the 5-minute burst gives a much smaller roof area per gutter than older tables.

Source: 2023 Florida Building Code, Plumbing, 8th ed., Chapter 11 (UpCodes viewer, unofficial transcription), read Oct 5, 2026

Related: Gutters

Where should downspouts drain in Tamiami?

Florida code requires downspouts to discharge at least one foot from the building wall, through underground piping, a tail extension or a splash block. In Tamiami, where a 10-year 5-minute burst falls at 10.9 inches an hour, water that pools at the foundation can damage it. Check yours after heavy rain.

Source: 2023 Florida Building Code, Residential, 8th ed., Chapter 8 (UpCodes viewer, unofficial transcription), read Oct 5, 2026

Related: Gutters

How often should gutters be cleaned near oaks in Tamiami?

Trade guidance says at least twice a year, typically spring and fall, and more often under overhanging trees. In Tamiami, with 76.6 percent of Miami's annual rain falling from May through October and oak pollen peaking in March and April, a practical rhythm is after the spring leaf drop and again before June.

Source: thig.com, read Oct 5, 2026

Related: Gutters

Nearby

Gutters near Tamiami

Sources for this page(30)
  1. 1.NOAA NCEI U.S. Climate Normals 1991-2020 (access data service). Read Oct 5, 2026.
  2. 2.NOAA NCEI U.S. Climate Normals 1991-2020 (access data service). Read Oct 5, 2026.
  3. 3.Single-family detached share of housing units: 56.5%. U.S. Census Bureau, American Community Survey 2024 5-year estimates (2020-2024), table B25024, via Census Reporter API. Read Oct 5, 2026.
  4. 4.Median year homes were built: 1984. U.S. Census Bureau, American Community Survey 2024 5-year estimates (2020-2024), table B25035, via Census Reporter API. Read Oct 5, 2026.
  5. 5.U.S. Census Bureau, American Community Survey 2024 5-year estimates (2020-2024), table B25035, via Census Reporter API. Read Oct 5, 2026.
  6. 6.U.S. Census Bureau, American Community Survey 2024 5-year estimates (2020-2024), table B25024, via Census Reporter API. Read Oct 5, 2026.
  7. 7.2023 Florida Building Code, Plumbing, 8th ed., Chapter 11 (UpCodes viewer, unofficial transcription). Read Oct 5, 2026. FBC text read from UpCodes (unofficial transcription): check floridabuilding.org or the ICC viewer before quoting (spec 8.7). Source URL inherited from COM-20 (the research cites it "as COM-20").
  8. 8.NOAA Atlas 14 (HDSC Precipitation Frequency Data Server). Read Oct 5, 2026.
  9. 9.2023 Florida Building Code, Residential, 8th ed., Chapter 8 (UpCodes viewer, unofficial transcription). Read Oct 5, 2026. FBC text read from UpCodes (unofficial transcription): check floridabuilding.org or the ICC viewer before quoting (spec 8.7). Source URL inherited from NC-2 (the research cites it "as NC-2").
  10. 10.2023 Florida Building Code, Residential, 8th ed., R318.5 (UpCodes viewer, unofficial transcription); FBC-Building 1503.7. Read Oct 5, 2026. FBC text read from UpCodes (unofficial transcription): check floridabuilding.org or the ICC viewer before quoting (spec 8.7).
  11. 11.2023 Florida Building Code, Residential, 8th ed., Chapter 9 (UpCodes viewer, unofficial transcription). Read Oct 5, 2026. FBC text read from UpCodes (unofficial transcription): check floridabuilding.org or the ICC viewer before quoting (spec 8.7). Source URL inherited from COM-29 (the research cites it "as COM-29").
  12. 12.ask.ifas.ufl.edu. Read Oct 5, 2026.
  13. 13.blogs.ifas.ufl.edu. Read Oct 5, 2026.
  14. 14.thig.com. Read Oct 5, 2026.
  15. 15.NOAA Atlas 14 Volume 9 version 2, partial-duration intensity estimates at the Tamiami 2020 Census internal point (25.7563, -80.4026), NOAA Hydrometeorological Design Studies Center. Read Oct 5, 2026.
  16. 16.NOAA Atlas 14 Volume 9 version 2, partial-duration 24-hour depth estimates at the Tamiami 2020 Census internal point (25.7563, -80.4026), NOAA Hydrometeorological Design Studies Center. Read Oct 5, 2026.
  17. 17.U.S. Census Bureau, American Community Survey 2024 5-year estimates (2020-2024), table B25035, B25034, B25024, via Census Reporter API, U.S. Census Bureau (via Census Reporter). Read Oct 5, 2026.
  18. 18.Florida Statutes, section 627.7011 (2026), Florida Legislature. Read Oct 4, 2026.
  19. 19.Miami-Dade County Regulatory and Economic Resources (RER) - Building & Permits, Miami. Read Oct 5, 2026.
  20. 20.Florida Building Commission, 'Setting New Standards for Safety: The Florida Building Code' (2004 publication; wind-speed figures in it are outdated and not used), Florida Building Commission. Read Oct 5, 2026.
  21. 21.miamidade.gov, miamidade.gov. Read Oct 5, 2026.
  22. 22.2023 Florida Building Code, Building, 8th ed., Chapter 1 (UpCodes viewer, unofficial transcription), UpCodes (Florida Building Code transcription). Read Oct 5, 2026.
  23. 23.Florida Statutes, section 713.135 (2026), Florida Legislature. Read Oct 5, 2026.
  24. 24.2023 Florida Building Code, Building, 8th ed., Chapter 15 (UpCodes viewer, unofficial transcription), UpCodes (Florida Building Code transcription). Read Oct 5, 2026.
  25. 25.Fla. Stat. 489.105(3)(e), Florida Legislature. Read Oct 5, 2026.
  26. 26.Florida Statutes, section 489.113 (2026), Florida Legislature. Read Oct 5, 2026.
  27. 27.NOAA National Hurricane Center, Tropical Cyclone Report: Hurricane Irma (AL112017), NOAA National Hurricane Center. Read Oct 5, 2026.
  28. 28.NOAA National Hurricane Center, Tropical Cyclone Climatology, NOAA National Hurricane Center. Read Oct 5, 2026.
  29. 29.Wikipedia, 'Tamiami, Florida' (revision 1374943879), Wikipedia. Read Oct 5, 2026.
  30. 30.NOAA Atlas 14 at Tamiami: 10.9 in/hr (5-minute, 10-year). NOAA Atlas 14 Precipitation Frequency Data Server. Read Oct 5, 2026.

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Gutters in Tamiami

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