Preview: automated baseline. Built automatically from federal data and not yet checked by hand. Check every figure against your own records before you use it in a plan.

Yukon-Koyukuk Census Area, AK

Risk-assessment baseline packet. County area 02290. Release 2026-10, data as of 2026-09-28.

Download the packet

PDF: PDF, for printing and reading. Word: Word document, tables ready to paste into a plan. Excel: Excel workbook, one sheet per section, full tables. JSON: Packet data (JSON), for analysts. Full packet as a web page. File manifest (checksums, source versions).

Plan clock

No county-level plan row in FEMA data

Map group: Absent from FEMA plan data.

What changed since your last plan

No county-level plan row in FEMA data, so there is no approval date to count from.

Plan status for every jurisdiction in the plan

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

JurisdictionTypeStatusPlanApprovedExpiresDays to expirynegative = days since expiryUpdate underwayNotes
Allakaket cityCityExpired on 2024-01-17Allakaket City and Village MJHMP (FEMA plan 104611)2019-01-182024-01-17-985FEMA tracker shows a plan in progress
Circle CDPUnincorporatedExpired on 2019-07-23Circle HMP (FEMA plan 25022)2014-07-232019-07-23-2,624
Fort Yukon cityCityExpired on 2023-01-10Fort Yukon HMP (FEMA plan 104579)2018-01-112023-01-10-1,357FEMA tracker shows a plan in progress
Galena cityCityApproved, expires 2027-09-25Galena City and Louden Tribal Council MJHMP (FEMA plan 108408)2022-09-262027-09-25362
Grayling cityCityExpired on 2020-12-22Grayling HMP (FEMA plan 101411)2015-12-222020-12-22-2,106
Holy Cross cityCityExpired on 2018-11-08Holy Cross HMP (FEMA plan 25045)2013-11-082018-11-08-2,881
Hughes cityCityNo approved plan on recordnonenonenoneFEMA tracker shows a plan in progress
Huslia cityCityApproved, expires 2027-10-26Huslia City and Native Village MJHMP (FEMA plan 108508)2022-10-272027-10-26393
Kaltag cityCityExpired on 2024-02-11Kaltag City and Native Village MJHMP (FEMA plan 104999)2019-02-122024-02-11-960
Koyukuk cityCityExpired on 2013-10-02Koyukuk City (FEMA plan 25077)2008-10-032013-10-02-4,744
McGrath cityCityExpired on 2023-10-14McGrath City and Native Village MJHMP (FEMA plan 105140)2018-10-152023-10-14-1,080
Nenana cityCityExpired on 2015-09-24Nenana HMP (FEMA plan 25092)2010-09-242015-09-24-4,022FEMA tracker shows a plan in progress
Nikolai cityCityApproved, expires 2027-10-02Nikolai HMP (FEMA plan 108518)2022-10-032027-10-02369
Ruby cityCityExpired on 2023-03-28Ruby HMP (FEMA plan 104580)2018-03-292023-03-28-1,280
Shageluk cityCityNo approved plan on recordnonenonenoneFEMA tracker shows a plan in progress
Tanana cityCityExpired on 2024-03-11Tanana City and Village MJHMP (FEMA plan 104995)2019-03-122024-03-11-931

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; whether the item is satisfied is decided by the plan and its reviewers. Full tables are in the downloads above.

Supports B1-a Hazards

15 of the 18 National Risk Index hazards apply here; omission evidence is shown only where NRI rates a hazard "Not Applicable", no federal declaration names it and Storm Events has no record of it since 1996.

Highest expected annual loss (NRI, modeled): Cold Wave, Wildfire and Earthquake.

Also check locally (not covered by NRI): 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 and expansive soils.

Check your state hazard mitigation plan's hazard list for this county; explain any hazard you drop.

Supports B1-b Location

  • Avalanche, Coastal Flooding, Earthquake, Hurricane, Landslide, Tornado, Tsunami, Volcanic Activity and Wildfire: Census tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.
  • Cold Wave, Drought, Hail, Heat Wave, Ice Storm, Lightning, Strong Wind and Winter Weather: Affects the whole planning area; national data do not distinguish locations within the county. Confirm locally.
  • 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 B1-c Extent

Storm Events records for 10 of 20 hazard groups, with the scale, observed range and worst recorded event for each; the others say local data required.

  • Hail: No hail record can stand as this county's largest: the 3 records with a recorded size reached this county only through an NWS zone that covers more than one county, so the hail may have occurred outside this county (zone-level); they are counted as occurrences.
  • Thunderstorm Wind: No thunderstorm wind record can stand as this county's strongest: the 4 records with a recorded speed reached this county only through an NWS zone that covers more than one county, so the wind may have occurred outside this county (zone-level); they are counted as occurrences.

Supports B1-d Previous occurrences

19 federal declaration rows for this area (17 counted incidents), each with type, dates and county Public Assistance dollars.

No county-level plan row in FEMA data, so there is no approval date to count from.

4 statewide declarations listed separately.

Hazards with no recorded events are stated as such (7 of 18).

Storm Events history: 639 records (notable ones in the PDF, all of them in the Excel file).

Supports B1-e Probability

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

  • Highly likely: Landslide and Lightning
  • Likely: Coastal Flooding, Cold Wave, Ice Storm, Inland Flooding, Wildfire and Winter Weather
  • Possible: Avalanche and Volcanic Activity
  • Unlikely: Hail, Strong Wind and Tornado

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

Supports B1-f Variation across the planning area

Range of census tract risk scores within the area for 18 hazards (4 tracts; rated tracts only).

16 member jurisdictions: plan clock, repeat-flood count, Public Assistance dollars and event records naming the place (starter, confirm locally).

Supports B2-a, B2-b Assets and impacts

Local data required

County-level starter. The plan must describe impacts for each participant and its own assets.

No county-level plan row in FEMA data, so there is no approval date to count from.

Checklist of what to gather locally: Critical facilities and lifelines per hazard; A problem statement per participant per hazard; Changes in development in hazard-prone areas since the last approval, or a statement of none (E1-a); Future assets.

Supports B2-a Context

Population 5,280; building value $1,691,226,898 and agriculture value $0 (total, not at risk).

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

Supports B2-c Repetitive loss

Repetitive-loss properties, FMA definition (44 CFR 77.2): 0 repetitive loss, 1 severe repetitive loss. NFIP insurance definition: 0 and 0.

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

Releases

Monthly releases are planned (not yet running); files for a release never change. Earlier releases will be listed here with what changed between them. All releases.

Cite this

Hazard Plain (2026). Yukon-Koyukuk Census Area, AK: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-28; County area 02290). Preview: automated baseline. https://hazardplain.org/ak/02290/ 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)

How this packet is built, its sources and its limits