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FEMA flood zones · Utah

Daggett County, Utah Flood Zone Map

3 federal flood & hurricane disasters

Less than 1% of Daggett County’s area is in FEMA’s high-risk flood zones.

Share of the whole county outline, rivers and lakes included; parts FEMA hasn’t mapped count as zero.

Coastal high risk (V, VE)FloodwayHigh risk (A, AE)Moderate (X, 500-year)Minimal (X)Undetermined (D)

Shaded areas are FEMA’s mapped flood hazard zones in and around Daggett County, Utah. Zoomed out they are simplified; at street level the map switches to FEMA’s exact layer. Tap anywhere to check that spot, or search an address above.

In their words

1 NOAA storm reports from Daggett County describe what happened, in the words of the forecasters who covered it. Read the Utah flood stories →

Federal disasters

7 federal disaster declarations since 1977, 3 of them floods, coastal storms or hurricanes.

DisasterBegan
FloodingApr 18, 2011
Hurricane Katrina EvacuationAug 29, 2005
Ut - Mustang Fire - 07/01/2002Jun 30, 2002
Severe Storms, Landslides & FloodingApr 13, 1983
DroughtJan 20, 1977

Weather and water disasters only; most recent first. Source: OpenFEMA Disaster Declarations.

Recorded flood events

12 since 1996: 10 flash floods and 2 river or area floods.

EventDateDamage
Flash FloodJul 20, 2017—
Flash FloodAug 26, 2014$100,000
Flash FloodSep 17, 2013—
FloodJul 3, 2011—
Flash FloodJul 22, 2008$75,000
Flash FloodSep 5, 2007$2,000
Flash FloodAug 3, 2007—
FloodMay 21, 2005—

— = no damage estimate in the record. Source: NOAA Storm Events Database.

From the storm reports

Flash Flood · Jul 20, 2017. Subtropical moisture continued to flow northward across the region and led to strong thunderstorms, some with heavy rainfall and hail.

Flash Flood · Aug 26, 2014. Heavy rainfall in northeast Utah creating flash flooding from runoff in the John Jarvie Ranch area.

Flash Flood · Sep 17, 2013. The weather pattern of high pressure over the southeast states and an upper trough along the west coast allowed another surge of monsoonal moisture to move into eastern Utah. Cooling temperatures aloft allowed large hail to form in some of the stronger storms, while heavy rain and some flash flooding also occurred.

Flood · Jul 3, 2011. High releases were necessary for water control on Flaming Gorge Reservoir which created high flows downstream of the dam through early July.

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.

Cross-section of a river floodplainDiagram: a river valley. The floodway is the channel and the land beside it; the 1%-annual-chance flood surface (the base flood elevation) covers the valley floor as zone A or AE; a narrow band higher up is shaded X, the 0.2% floodplain; higher ground is X.0.2% CHANCE A YEAR (500-YEAR)BASE FLOOD ELEVATION · 1% A YEARXAEFloodwayAEX
  1. A / AE Inside the 1%-a-year floodplain: about a 26% chance of flooding over a 30-year mortgage. AE has a mapped base flood elevation; plain A does not.
  2. Floodway The channel and the land beside it that has to be kept clear enough to carry the flood. Building here is tightly limited.
  3. X shaded The 0.2% (500-year) floodplain, plus some levee-protected and very shallow flood areas.
  4. X Outside both lines. No federal requirement to insure, which is not the same as no risk.

Every flood zone code explained →

Flood insurance in Daggett County

If a building in Daggett 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.