FloodOK

Oklahoma Flood Hazard Profile

Hazard Data · Model Version 2.5

Overview

Oklahoma experiences riverine and flash flood hazard, frequently compounded with severe weather events. The Arkansas, Canadian, and Red river basins are primary flood corridors. FEMA disaster declarations for flooding are common, particularly in spring when severe weather and heavy rainfall coincide.

In the Historical Record

23

federal disaster declarations (1955–2019)

FEMA OpenFEMA Disaster Declarations

12,871

NFIP flood insurance claims paid

FEMA OpenFEMA NfipClaims, 1978–2024

Counted from the records this platform holds. A figure is shown only where the underlying dataset could be read.

County by County in Oklahoma

What federal records show has happened in each county: storms, disaster declarations and flood insurance claims. The counties below have the longest NOAA storm records in Oklahoma.

Tulsa County Oklahoma County Cleveland County Texas County Comanche County Kay County Beaver County Caddo County Garfield County Grady County Canadian County Osage County

All Oklahoma counties

Notable Historical Events

12019 Arkansas River Flood — record flooding in Tulsa, Muskogee (FEMA DR-4438)

22015 May Floods — widespread flash and riverine flooding (FEMA DR-4222)

32007 June Floods — extensive flooding along multiple river basins

Hazard Scoring Approach

Calchis computes a Calchis Hazard Score (0–10) for flood hazard at any US address. The score is composed of weighted sub-components derived from federal data sources and published research. All score components are transparent and returned in API responses.

These are hazard scores — physical intensity likelihood only. They do not include property exposure or vulnerability data. We never call a hazard score a risk score. See the full methodology for scoring details.

Analyze Your Address

Enter any Oklahoma address to see location-specific flood hazard scoring with full methodology transparency.

Open Live Map — Oklahoma

Data Sources

FEMA National Flood Hazard Layerwww.fema.gov

NOAA NWPS River Gaugeswater.noaa.gov

OWRB Floodplain Managementwww.owrb.ok.gov

Oklahoma Severe Weather Flood Methodology

Monitoring flood exposure in Oklahoma?

This page is a state-level profile. Calchis scores individual addresses, tracks live flood events against your own locations, and alerts you when one approaches them.

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Calchis Hazard Score — derived from federal and academic sources listed above. Property exposure data not included. Not a substitute for professional actuarial assessment. Decision-support intelligence — not a primary alerting or dispatch system. Verify against official sources.