Oakland County, MI

Name: Oakland County, Michigan: risk-assessment baseline packet, release 2026-10
Creator: Hazard Plain

Risk-assessment baseline packet. County FIPS 26125. Release 2026-10, data as of 2026-09-30.

Summary

Plan status as of 2026-09-30: Approved, expires 2029-02-26. Plan: Oakland County HMP Update (FEMA plan 109566), approved 2024-02-27.

Since the plan was approved on 2024-02-27: no new federal declaration.

NOAA Storm Events records since that date: 70 records (data through 2026-06-30).

Highest expected annual loss (FEMA National Risk Index, modeled total; see B1-a): Inland Flooding ($164,905,990 a year), Tornado ($102,052,062) and Cold Wave ($55,368,805).

Repetitive-loss flood properties now: FMA RL 0, SRL 4 (44 CFR 77.2); any definition: 31.

The packet's tables are organized by the items of FEMA's Local Mitigation Plan Review Tool, Element B (B1-a to B2-c); the summaries below follow the same order.

Download the packet

Full packet as a web page. File manifest (checksums, source versions).

Plan clock

Approved, expires 2029-02-26

Plan:: Oakland County HMP Update (FEMA plan 109566)
Approved:: 2024-02-27
Days to expiry:: 880

What changed since your last plan (approved 2024-02-27)

New federal declarations:: none
Storm Events records since approval:: 70 records (data through 2026-06-30)
Repetitive loss now:: FMA RL 0, SRL 4 (44 CFR 77.2); any definition: 31
Repeat-flood change:: this release sets the baseline count.

Plan status for every jurisdiction listed in this county

62 jurisdictions. Each row is that jurisdiction's own plan clock. Notes include other approved plans FEMA lists for the same jurisdiction.

Jurisdiction	Type	Status	Plan	Approved	Expires	Days to expirynegative = days since expiry	Notes
Oakland County	County	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-02-26
Auburn Hills city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Berkley city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Beverly Hills village	Village	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Bingham Farms village	Village	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Birmingham city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Bloomfield Hills city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Clawson city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Farmington city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Farmington Hills city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Ferndale city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Franklin village	Village	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Hazel Park city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Holly village	Village	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Huntington Woods city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Keego Harbor city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Lake Angelus city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2025-01-29
Lake Orion village	Village	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Lathrup Village city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Leonard village	Village	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Madison Heights city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Milford village	Village	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Northville city	City	Approved, expires 2031-05-03	Wayne County 2026 Hazard Mitigation Plan (FEMA plan 111635)	2026-05-04	2031-05-03	1,676	Also approved under plan 109566 (Oakland County HMP Update, expires 2029-02-26). FEMA's plan status map shows one plan per jurisdiction and may show one of these; this packet uses the approved plan that expires last. this jurisdiction approved 2026-06-10
Novi city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Oak Park city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Orchard Lake Village city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Ortonville village	Village	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2025-01-29
Oxford village	Village	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Pleasant Ridge city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Pontiac city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Rochester city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880
Rochester Hills city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2025-01-29
Royal Oak city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
South Lyon city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Southfield city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2025-01-29
Sylvan Lake city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Troy city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Village of Clarkston city	Village	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Walled Lake city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Wixom city	City	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Wolverine Lake village	Village	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Addison township	Township	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Bloomfield charter township	Township	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Brandon charter township	Township	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Commerce charter township	Township	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Groveland township	Township	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Highland charter township	Township	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Holly township	Township	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Independence charter township	Township	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Lyon charter township	Township	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Milford charter township	Township	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Novi township	Township	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2025-01-29
Oakland charter township	Township	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Orion charter township	Township	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Oxford charter township	Township	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Rose township	Township	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Royal Oak charter township	Township	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2025-01-29
Southfield township	Township	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Springfield charter township	Township	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
Waterford charter township	Township	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
West Bloomfield charter township	Township	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19
White Lake charter township	Township	Approved, expires 2029-02-26	Oakland County HMP Update (FEMA plan 109566)	2024-02-27	2029-02-26	880	this jurisdiction approved 2024-12-19

State plan status and tribal plans in this state: see the state page.

What the packet contains

Sections in FEMA checklist order; each heading names the review item its tables support. Full tables are in the downloads above.

Supports FEMA checklist item B1-a Hazard identification

14 of the 18 National Risk Index hazards apply here.

Not applicable to this county per NRI, with no federal declaration and no Storm Events record since 1996: avalanche, coastal flooding, tsunami and volcanic activity. That is the evidence for leaving them out of the plan.

Highest expected annual loss (NRI, modeled): Inland Flooding, Tornado and Cold Wave.

Not covered by NRI (local data needed): dam failure (incl. upstream dams); levee failure; flash flood as its own subtype; ice jams; debris flows; erosion (riverine and coastal); land subsidence and sinkholes; expansive soils.

The state hazard mitigation plan also lists hazards for this county; FEMA asks the plan to explain any hazard it leaves out.

Supports FEMA checklist item B1-b Hazard location

Cold Wave, Drought, Hail, Heat Wave, Ice Storm, Lightning, Strong Wind and Winter Weather: Affects the whole county; national data give no location within it.
Earthquake, Hurricane, Landslide, Tornado and Wildfire: Varies within the county: the census tracts with the highest National Risk Index rating for this hazard are listed. FEMA's Resilience Analysis and Planning Tool (RAPT) maps the National Risk Index for every tract (https://www.fema.gov/emergency-managers/practitioners/resilience-analysis-and-planning-tool).
Inland Flooding: The FEMA Flood Insurance Rate Map (FIRM) is the required location source for flooding. See the FEMA Flood Map Service Center (https://msc.fema.gov) for this county.

Supports FEMA checklist item B1-c Hazard extent

Storm Events records for 12 of the 20 NOAA event-type groups mapped to the 18 hazards, with the scale, observed range and worst recorded event for each; the others say which local data are needed.

Hail: 3 in hail, 1983-05-02
Thunderstorm Wind: 74 kt (85 mph), measurement type not recorded, Thunderstorm Wind, 1991-07-07
Tornado: F4 tornado, 1976-03-20, 3.8 mi path length (whole path, pre-1996), 117 yd wide, $25,000,000 property; crops not recorded (1976 dollars), 1 direct death, 55 direct injuries

Supports FEMA checklist item B1-d Previous occurrences

Federal declarations for this area: 15 declarations covering 11 separate hazard incidents counted in this packet; each with type, dates and county Public Assistance dollars.

New since the last plan (approved 2024-02-27): none.

3 statewide declarations listed separately.

Hazards with no Storm Events record and no federal declaration are stated as such (8 of 18).

Storm Events history: 1,234 records (notable ones in the PDF, all of them in the Excel file).

Supports FEMA checklist item B1-e Probability of future events

FEMA annualized frequency (modeled) for each hazard, with a descriptor from a scale defined in the packet.

Highly likely: Hail, Lightning and Strong Wind
Likely: Cold Wave, Heat Wave, Ice Storm, Inland Flooding, Landslide, Tornado and Winter Weather
Possible: Drought and Hurricane

Historical frequency by intensity band (tornado, hail, wind): 9 bands from Storm Events.

Supports FEMA checklist item B1-f Hazards that vary across jurisdictions

Range of census tract risk scores within the area for 14 of the 18 hazards (350 tracts; rated tracts only).

62 jurisdictions: plan clock, repeat-flood count, Public Assistance dollars and event records naming the place (starting figures from federal data).

County Public Assistance in B1-d also includes applicants filed under the county that are not jurisdictions in this plan (for example state agencies, special districts and nonprofits), so the jurisdiction rows add up to less.

Supports FEMA checklist items B2-a and B2-b Vulnerability and potential impacts

The packet's table gives county-level starting figures; the plan describes impacts for each jurisdiction and its own assets.

Storm Events damage since 2024-02-27: $560,500 in county-coded records (65 records); $1,400,000 reported for the zone (5 zone records). Data through 2026-06-30; nominal dollars.

Local data needed

To gather:

Critical facilities and lifelines per hazard
A problem statement per jurisdiction per hazard
Changes in development in hazard-prone areas since the last approval, or a statement of none (E1-a)
Future assets

Supports FEMA checklist item B2-a Vulnerability (county context)

Population 1,274,114; building value $319,114,747,357 and agriculture value $28,752,087 (total, not at risk).

National Risk Index rating Relatively High; social vulnerability Very Low; community resilience Very High.

Supports FEMA checklist item B2-c Repetitive loss properties

Repetitive-loss properties, FMA definition (44 CFR 77.2): 0 repetitive loss, 4 severe repetitive loss. NFIP insurance definition: 31 and 4.

Mitigated 0; insured 14; NFIP data as of 2026-08-02. Counts by occupancy group and for each jurisdiction are in the packet.

Releases

2026-10 (this release)

Each release is dated; this is release 2026-10. It was first published 2026-09-30; its files do not change. Later releases will be listed here with what changed between them. All releases.

Cite this

Hazard Plain (2026). Oakland County, MI: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-30; County FIPS 26125). Automated baseline. https://hazardplain.org/mi/26125/ Built from FEMA OpenFEMA, the FEMA National Risk Index and NOAA NCEI Storm Events; source versions in the packet's Sources list.

Source citations for the plan's bibliography (8)

FEMA, OpenFEMA HazardMitigationPlanStatuses v1, version 2026-09-29T134039Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/HazardMitigationPlanStatuses (API)
FEMA, OpenFEMA DisasterDeclarationsSummaries v2, version 2026-09-29T162832Z, pulled 2026-09-30, https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries (API)
FEMA, OpenFEMA PublicAssistanceFundedProjectsSummaries v1, version 2026-09-29T150754Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/PublicAssistanceFundedProjectsSummaries (API)
FEMA, OpenFEMA NfipMultipleLossProperties v1, version 2026-08-04T164045Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/NfipMultipleLossProperties (API)
FEMA, FEMA National Risk Index 1.20.0 (December 2025), county and census tract tables, version 1.20.0, pulled 2026-09-30, https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_Counties.zip (download, 25 MB), https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_CensusTracts.zip (download, 635 MB)
NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-30, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/
NOAA National Weather Service, NWS county-public forecast zones correlation file, version bp03mr20 to bp16ap26 (11 files; newest bp16ap26), pulled 2026-09-30, https://www.weather.gov/gis/ZoneCounty
U.S. Census Bureau, Census 2024 Gazetteer, 2020 place by county, CT county-to-cousub crosswalk, version 2024-gazetteer, pulled 2026-09-30, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_counties_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_cousubs_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_place_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_unsd_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_elsd_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_scsd_national.zip, https://www2.census.gov/geo/docs/reference/codes2020/national_place_by_county2020.txt, https://www2.census.gov/geo/docs/reference/ct_change/ct_cou_to_cousub_crosswalk.xlsx (used to match place names and codes; no table prints its values)

How this packet is built: methods and sources