Alachua County, Florida Flood Zone Map

How Alachua County floods

Standard flooding from 34 recorded events over the last 30 years defines the primary flood character of Alachua County, alongside 11 flash flood events and 9 tropical storm events resulting in 1 death. Recent tropical activity significantly impacted the area, including Hurricane Debby in August 2024, which brought tornadoes from outer convective bands and widespread inland flooding, followed by Hurricane Helene and Tropical Storm Milton in September and October 2024.

National Flood Insurance Program records indicate that flood claims are not restricted to high-risk areas. Zone A accounts for 158 claims with an average payout of $43,830 and an average recorded water depth of 6 inches. Meanwhile, Zone X properties recorded 92 claims with an average payout of $40,623 and an average water depth of 10 inches, and Zone X_UNSHADED recorded 35 claims with an average payout of $41,658 and an average water depth of 5 inches. Smaller numbers of claims occurred in Zone X_SHADED (8 claims, average payout of $36,414, average depth of 3 inches) and Zone UNKNOWN (11 claims, average payout of $3,527, average depth of 2 inches).

Homeowners and real estate agents in both designated high-risk flood zones and moderate-to-low risk Zone X areas should pay close attention to these patterns, as properties outside traditional special flood hazard areas have historically experienced significant flooding and substantial insurance claim payouts.

Summary written from NOAA storm reports and NFIP claims for this county. Not a prediction.

Where the flood claims came from

21% of Alachua County’s flood insurance claims were on properties rated outside FEMA’s high-risk zones.

• V zones 5
• A zones 158
• X shaded 8
• X 35

206 NFIP claims with a recorded rated flood zone, 1978 to date. The zone is the one FEMA used to rate that policy, which may not match today’s map. Source: OpenFEMA NFIP claims.

How deep the water got

Flood claims, year by year

The worst year was 2017, with 88 claims and $4.0M paid, the year of Hurricane Irma.

Bar height is scaled by square root so ordinary years stay visible next to the worst one. NFIP claims by year of loss. Source: OpenFEMA.

From the storm reports

Tropical Storm · Sep 26, 2024. Hurricane Helene made landfall as a category 4 with peak winds of near 140 mph in the Florida Big |Bend just east of the Aucilla River Entrance in Taylor County, late Thursday evening September 26, |2024. Helene's main impact to southeast Georgia and northeast Florida was wind damage as it |tracked quickly north-northeast. The very powerful hurricane and the forward motion produced a |wide swath of wind damage ac…

Flood · Jun 11, 2024. A surface front was stalled across north Florida with moist, unstable southwest flow off of the Gulf of Mexico south of the front. This airmass combined with frontal lift and sea breeze forcing triggered locally heavy rainfall and isolated strong to severe storms across portions of NE FL.

Tropical Storm · Oct 9, 2024. A tropical disturbance over the southwest Gulf of Mexico quickly developed into Tropical Storm |Milton on Saturday, October 5th. Milton then moved slowly east-southeastward, strengthening into a |hurricane the following day. On Monday, October 7th, the storm underwent rapid intensification, |reaching Category 5 strength as it neared the northwestern coast of Mexico's Yucat��n Peninsula. Late |on Monday and int…

Tropical Storm · Aug 4, 2024. Hurricane Debby made landfall as a Category 1 storm along the FL Big Bend coast during the early morning of August 5, 2024. Prior to landfall, outer convective bands produced tornadoes across portions of northeast Florida on August 4th. Widespread flooding moved inland with Debby across the Suwannee River Valley and inland Southeast Georgia where flash flooding and moderate to major river flooding occurred.

National Weather Service narratives, lightly trimmed. Source: NOAA Storm Events Database.

The zones you’ll see on the map

Every colour on the map above is a place on this drawing: where the ground sits relative to the flood FEMA plans for.

Every flood zone code explained →

Flood insurance in Alachua County

If a building in Alachua County is in a high-risk zone (A or V) and its mortgage comes from a federally regulated or insured lender, or is federally backed, flood insurance is required.

Outside those zones it is optional, and often worth having: from 2014 to 2024 nearly one-third of NFIP claims came from outside the high-risk Special Flood Hazard Area. Since Risk Rating 2.0, NFIP premiums are set for each building, so the only reliable price is a quote: FloodSmart.gov or a local agent.