Gutters ยท Westchase
Gutters in Westchase, FL
A 10-year storm drops rain on Westchase at 9.82 inches an hour for 5 minutes, and 53.2 percent of the housing here is single-family detached, so most roofs shed that water through their own gutters. Those gutters must handle short, heavy bursts. Downspouts then need to send the water well away from the house.
Updated October 2026

Our workSizing for the storm
Sizing gutters for a Westchase storm
The burst matters more than the daily total. At 9.82 inches an hour for 5 minutes in a 10-year storm, and 13.1 inches an hour in a 100-year storm, a small gutter fills before water can leave it. Westchase sits in Hillsborough County, where Tampa International Airport averages 49.48 inches of rain a year and about 61 percent of it falls June through September.
IllustrationIllustration: micro mesh guard
Plumbing code sizes horizontal gutters from the flow off the roof, and the table shows a 6 inch half-round gutter at 1/8 inch per foot slope carries 110 gpm, about 49 percent more than a 5 inch one at the same slope. That gap is enough to decide whether a long run overflows during a summer storm.
The rainfall basis you choose changes the answer a lot. Sizing by the 100-year, 1-hour rate and by the short 5-minute burst can differ by more than two times for the same gutter. Ask whoever sizes your gutters which basis they used, and confirm the numbers with the Hillsborough County building office.
Discharge and placement
Downspout capacity and discharge on Westchase lots
- A 2 1/2 by 3 inch downspout carries about 92 gpm at the table's 3 inch round size; a 2 by 2 inch one carries only 30 gpm.
- Route each outlet a foot or more out from the wall, using buried pipe, a tail extension or a splash block.
- Count half of any upper wall that sheds rain onto the roof when you size the leaders.
Florida Building Code places this 1 foot minimum in its termite-protection section, so the distance guards the soil beside the foundation as well as the wall. In a community organized into 28 villages under one deed-restricted association, check your association's rules before you add buried pipe or extensions across the yard.
On a Westchase lot, water that stops at the wall can soak the foundation and the soil beside it. Warranties on roofs typically require positive drainage, and damage from its absence is often excluded, so a downspout that dumps at the foundation can cost you coverage later.
Keeping gutters clear
Tree litter, pollen and gutter cleaning schedules
Southern live oaks, which can reach 60 to 80 feet, drop leaves and fruit that become a litter problem in gutters. Florida pollen season runs January to June, peaking March and April, and oaks are among the major producers. Pine needles peak from September through November.
Tower Hill Insurance Group recommends cleaning gutters at least twice a year, in spring and fall, and more often under overhanging trees or during frequent storms. A practical rhythm for Westchase is after the spring oak drop, before June, and after the autumn pine-needle peak.
Consumer Reports found gutter guards did not stop a severe downpour well, and most still needed brushing in high-pollen areas. Plan on cleaning even with guards installed.
Rain on your roof
Preset: 6.74 inches, the 10-year 24-hour rain (NOAA Atlas 14 at Westchase).
8,398 gallons run off that roof, all of it toward the gutters and downspouts.
Math: square feet ร inches ร 0.623 gallons.
Questions
Gutters in Westchase: questions
How big should my gutters be for a Westchase rainstorm?
Size them for short, heavy bursts. In Westchase a 5-minute downpour in a 10-year storm falls at 9.82 inches an hour, and a 100-year storm reaches 13.1 inches an hour. A 6 inch half-round gutter at 1/8 inch per foot slope carries 110 gpm under the plumbing code table, about 49 percent more than a 5 inch one. Ask your installer which rainfall basis they used, and confirm local requirements with the Hillsborough County building office.
Source: NOAA Atlas 14 Volume 9 version 2, partial-duration intensity estimates at the Westchase 2020 Census internal point (28.0567, -82.6076), read Oct 5, 2026
Where must my downspouts drain in Hillsborough County?
The outlet has to land at least 1 foot from the sidewall, and the code accepts buried pipe, tail extensions or splash blocks for that. Water that stops at the wall can soak the foundation, and roof warranties typically require positive drainage. Confirm the permitting details with the Hillsborough County building office, since Westchase is unincorporated and permits come from the county.
Source: 2023 Florida Building Code, Residential, 8th ed., Chapter 8 (UpCodes viewer, unofficial transcription), read Oct 5, 2026
How often should I clean gutters under oak trees in Westchase?
Experts recommend cleaning gutters at least twice a year, in spring and fall, and more often under overhanging trees or during frequent storms. In Westchase, Southern live oaks can reach 60 to 80 feet and drop leaves that litter gutters, and Florida pollen season runs January to June, peaking March and April. A good schedule is after the spring oak drop, before the June to September rains that bring about 61 percent of Tampa's annual rain, and after the autumn pine-needle peak.
Source: thig.com, read Oct 5, 2026
Do gutter guards solve the cleaning problem?
Not fully. Consumer Reports found that even the top-scoring screen was only middling at containing a severe downpour, and that guards still need brushing in high-pollen areas. In Westchase, where a 10-year 5-minute burst falls at 9.82 inches an hour, plan on cleaning gutters even with guards installed, and ask a contractor to show how the guard handles the largest storms.
Source: consumerreports.org, read Oct 5, 2026
Sources for this page(36)
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South Fork Roofing
Gutters in Westchase
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