FEMA flood zones · Washington

Douglas County, Washington Flood Zone Map

4 flood insurance claims·$50,029 paid·3 federal flood & hurricane disasters

Less than 1% of Douglas 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 Douglas County, Washington. 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.

How deep the water got

outlet80″ door12″24″36″48″60″72″84″

In flood insurance claims here that reported a flood depth, the average was 4 inches.

Drawn to scale against an 80-inch door. Even a few inches soaks flooring, the bottom of the drywall and anything plugged in near the floor.

Average of the depths reported on claims (zero and implausible values left out); FEMA’s record doesn’t say exactly where each depth was measured. Source: OpenFEMA NFIP claims.

Flood claims, year by year

The worst year was 1995, with 2 claims and $31,853 paid.

1982: 1 claims1989: 1 claims1995: 2 claims198019902000

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.

In their words

5 NOAA storm reports from Douglas County describe what happened, in the words of the forecasters who covered it. Read the Washington flood stories →

Federal disasters

19 federal disaster declarations since 1972, 3 of them floods, coastal storms or hurricanes.

DisasterBegan
Cold Springs/pearl Hill FireSep 7, 2020
Wildfires And Straight-line WindsSep 1, 2020
Road 11 FireJul 11, 2020
Grass Valley FireAug 11, 2018
Chelan Hills FireJul 27, 2018
Chelan Fire ComplexAug 14, 2015
WildfiresAug 13, 2015
Barker Canyon FireSep 9, 2012

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

Recorded flood events

11 since 1996: 8 flash floods and 3 river or area floods.

EventDateDamage
Flash FloodJul 10, 2023$1.0M
Flash FloodJun 5, 2022$15,000
Flash FloodAug 10, 2019$500
Flash FloodAug 10, 2019$2,000
Flash FloodJul 2, 2019$1,000
FloodMar 9, 2016$2,000
Flash FloodJun 29, 2015—
FloodFeb 7, 2015—

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

From the storm reports

Flash Flood · Jul 10, 2023. A strong system moved through Eastern Washington and brought scattered thunderstorms. The main areas stretched along Highway 2 from Waterville Plateau to Northern Spokane County.

Flash Flood · Jun 5, 2022. Another round widespread stratiform rain showers impacted the Inland Northwest. With the ground already saturated from previous system, the rain began to impact the region quickly with three quarters to an inch of rain.

Flash Flood · Aug 10, 2019. The weather pattern on August 10th featured a very moist and unstable air mass with a passing upper level low pressure. These elements promoted widespread thunderstorms with heavy rain which produced Flash Flooding over potions of eastern Washington. Local observations indicated some of these slow moving storms produced from 1 to locally in excess of 5 inches of rain. Particularly hard hit was the Wenatchee area w…

Flash Flood · Jul 2, 2019. During the afternoon of July 2nd numerous slow moving thunderstorms containing heavy rain formed near the center of an upper level low pressure over the western Columbia Basin and the east slopes of the Cascade Mountains. A rich moisture feed wrapping around this upper low pressure allowed some of these storms to produce heavy rainfall over limited areas. A spotter near Waterville reported 1.29 inches of rain from…

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 Douglas County

If a building in Douglas 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.