Gutters · Davenport

Gutters in Davenport, FL

In a 10-year storm, rain falls on Davenport at 8.87 inches an hour over a five-minute stretch. That rate is what a gutter has to carry before it spills over the fascia. With a median build year of 2015, most homes here have gutters that were sized to the code minimum.

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Updated October 2026

White two-storey city hall with bell tower, arched porch and a lit holiday tree on the lawn. — Photo: Davenport city hall davenport florida by Connor J. Williams, CC BY 3.0, cropped

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. — Photo: Davenport city hall davenport florida by Connor J. Williams, CC BY 3.0, cropped

Davenport figures this page uses

Land area: 3.74sq mi
Water share of total area: 3.2%
Median year homes were built: 2015

Rainfall numbers

How much rain Davenport gutters must handle

The short burst is the number that matters for sizing. A 100-year storm here reaches 11.9 inches an hour for five minutes. A 1-hour rain in a 10-year storm falls at 2.79 inches an hour, and the 24-hour depth is 6.12 inches. Gutters overflow in the burst, not in the all-day soak.

White rectangular downspout running from the gutter down a sand-colored stucco wall, turning through an elbow into an extension that rests on a concrete splash block on the lawn, carrying water away from the foundation (illustration)

Illustration: downspout splash block

Florida's plumbing code sizes a horizontal gutter from the flow off the roof. Table capacities run from 39 gallons a minute for a 4-inch half-round at 1/8 inch per foot of slope to 110 for a 6-inch. By our arithmetic, a 6-inch carries about 49 percent more than a 5-inch at 74. On a 10-year burst, that margin is the reason to choose 6-inch.

Downspouts count too. A 3-inch round leader is rated at 92 gallons a minute, and a 4-inch round at 192. One undersized downspout on a long run backs water up into the gutter and over the front edge.

Code and drainage

Downspout rules and where the water goes

Florida Building Code requires gutters with downspouts on homes whose eaves project less than 6 inches, except at gable end rakes or on a roof above another roof. Many newer houses in Davenport have tight eaves, and 71 percent of the housing units were built in 2010 or later. Check your eave depth before assuming you can skip them.

Each downspout must discharge at least 1 foot from the sidewall, by underground pipe, tail extension or splash block. The rule sits in a termite-protection section, so water dumped at the foundation is a code problem, not only a drainage one. Gutters and leaders must also be metal or approved plastic, with joints lapped, soldered or caulked and fastened with corrosion-resistant hardware.

Water has few places to go on a small lot. The city covers 3.74 square miles of land, with 0.12 square mile of water. Direct your tail extensions toward the lot's own low spot, away from the neighbor's wall.

Upkeep schedule

Leaves, pollen and how often to clean

Oaks and pines drop what clogs gutters. Florida pollen season runs January to June and peaks in March and April, and pine needle fall is greatest from September through November. Live oaks are a known litter problem and can spread 60 to 120 feet.

A sensible rhythm under oaks and pines is late April to May, before the June to September storm season, and again after the autumn needle peak. Polk County gets 46.12 inches a year at Winter Haven Gilbert Airport, and 26.62 inches fall in June through August at Lakeland 2. Clean before those months, not after.

For roof permits in Davenport, the City of Davenport Building & Planning Department handles building permits and inspections. Confirm with that office whether gutter work alone needs one. State licensing for gutter-only work is unsettled, so ask the office before you hire anyone.

Rain on your roof

Roof area (square feet)Rain (inches)

Preset: 6.12 inches, the 10-year 24-hour rain (NOAA Atlas 14 at Davenport).

7,626 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 Davenport: questions

How big should gutters be in Davenport, FL?

A 6-inch half-round is the safer choice here. At 8.87 inches an hour in a 10-year burst, the plumbing code's table gives a 6-inch gutter 110 gallons a minute at 1/8 inch per foot slope, against 74 for a 5-inch. The difference matters most on long, low-slope runs. The code sizes gutters from the flow off the roof surface, so a bigger roof plan area calls for more capacity.

Source: NOAA Atlas 14 Volume 9 version 2, partial-duration intensity estimates at the Davenport 2020 Census internal point (28.1612, -81.6108), read Oct 5, 2026

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Do I need gutters on my Davenport house?

Often yes. Florida Building Code requires gutters with downspouts on buildings whose eaves project less than 6 inches, except at gable end rakes or on a roof above another roof. With a median build year of 2015, many Davenport homes have short eaves. Measure your overhang, then confirm with the city building office.

Source: 2023 Florida Building Code, Residential, 8th ed., R318.5 (UpCodes viewer, unofficial transcription); FBC-Building 1503.7, read Oct 5, 2026

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How far from the house must a downspout drain?

At least 1 foot from the structure sidewall. The code allows underground piping, tail extensions or splash blocks. The rule is in a termite-protection section of the Florida Building Code, so it applies to every Davenport home. Hurricane Irma put 17.61 inches of rain on a Davenport station in 2017, which shows how much water a roof can shed toward the slab in one storm.

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

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How often should I clean gutters under oak trees?

Twice a year is the floor, and heavy canopy calls for more. One Florida insurer says spring and fall, with extra cleanings for overhanging trees. In Davenport, a good schedule is late April to May, before June, and after the autumn pine needle peak. Polk County's wettest stretch runs June through August, when Lakeland 2 averages 26.62 inches.

Source: thig.com, read Oct 5, 2026

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Did Irma overflow gutters in Davenport?

Rain of that size overwhelms any gutter. Hurricane Irma in 2017 dropped 17.61 inches at a station in Davenport, the highest total in Polk County. That is far above the 10.6-inch 24-hour depth of a 100-year storm. Gutter size matters for ordinary storms, so choose one for the burst rate.

Source: NOAA NCEI Storm Events Database, event 721819 (Hurricane (Typhoon), 2017-09-10, zone/county POLK), bulk details file; FEMA OpenFEMA DisasterDeclarationsSummaries v2 (designatedArea = county), read Oct 5, 2026

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