Overall Green alert Flood
in United States

Flood impact summary

This flood is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

GDACS ID: 1101495
Deaths: 23
Displaced: 753
Region: Golden Valley
Countries: United States
From - To 23 Jun - 26 Aug
Known identifiers for this event:

GDACS Score

For more info on GDACS alert score click here.

Impact Assessement as of 03-08-2022

SENDAI Indicator A N Country Location Info
death 2 United States Buckhorn Mountain
death 2 United States Las Vegas
death 15 United States Kentucky
death 1 United States Golden Valley
death 2 United States Las Vegas
death 1 United States Dallas
missing 44 United States Buchanan County
missing 1 United States Zion National Park
SENDAI Indicator B N Country Location Info
affected 1 United States Roswell
affected 3 United States Columbia
affected 1 United States The Bronx
affected 1000 United States Death Valley
displaced 1 United States St. Louis
displaced 20 United States West Virginia
displaced 60 United States Duncan
displaced 200 United States Carlsbad Caverns National Park
displaced 30 United States Randall
displaced 400 United States Sevier County
displaced 42 United States Brandon
rescued 30 United States New Jersey
rescued 100 United States St. Louis
rescued 14 United States -
rescued 60 United States Capitol Reef National Park
rescued 39 United States Dallas
rescued 50 United States Fort Worth
rescued 1 United States Dexter
rescued 30 United States Canton
rescued 19 United States Denver
rescued 20 United States Prince George s County
rescued 7 United States Forest Falls
SENDAI Indicator C N Country Location Info
houses 17 Canada Winnipeg
houses 20 United States Roswell
houses 20 United States Helena
houses 40 United States Conconully
houses 100 United States West Virginia
houses damaged 100 United States Buchanan County
houses damaged 75 United States McDowell County
SENDAI Indicator D N Country Location Info
bridges damaged 12 United States McDowell County

Satellite Observation

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Timeline of revisions

For accessing reports of previous advisories, please click on the advisory number in the table below.

IDAlert ColorPopulation affectedStart DateEnd DateSource
1 0 deaths and 30 displaced 23 Jun 2022 26 Jun 2022 FloodList
2 0 deaths 26 Jun 2022 28 Jun 2022 FloodList
3 0 deaths 23 Jun 2022 24 Jun 2022 FloodList
4 0 deaths 03 Jul 2022 04 Jul 2022 FloodList
5 0 deaths 02 Jul 2022 06 Jul 2022 FloodList
6 0 deaths 04 Jul 2022 06 Jul 2022 FloodList
7 0 deaths 12 Jul 2022 14 Jul 2022 FloodList
8 0 deaths 12 Jul 2022 14 Jul 2022 FloodList
9 2 deaths 15 Jul 2022 16 Jul 2022 FloodList
10 0 deaths and 400 displaced 12 Jul 2022 14 Jul 2022 FloodList
11 0 deaths 18 Jul 2022 20 Jul 2022 FloodList
12 2 deaths 21 Jul 2022 24 Jul 2022 FloodList
13 0 deaths and 1 displaced 26 Jul 2022 28 Jul 2022 FloodList
14 15 deaths 27 Jul 2022 29 Jul 2022 FloodList
15 0 deaths 02 Aug 2022 03 Aug 2022 FloodList
16 1 deaths 31 Jul 2022 01 Aug 2022 FloodList
17 0 deaths 07 Aug 2022 08 Aug 2022 FloodList
18 0 deaths 05 Aug 2022 06 Aug 2022 FloodList
19 0 deaths 10 Aug 2022 11 Aug 2022 FloodList
20 2 deaths 28 Jul 2022 13 Aug 2022 FloodList
21 0 deaths 13 Aug 2022 14 Aug 2022 FloodList
22 0 deaths and 20 displaced 15 Aug 2022 17 Aug 2022 FloodList
23 0 deaths 19 Aug 2022 21 Aug 2022 FloodList
24 0 deaths and 60 displaced 22 Aug 2022 24 Aug 2022 FloodList
25 0 deaths and 200 displaced 20 Aug 2022 23 Aug 2022 FloodList
26 1 deaths 21 Aug 2022 23 Aug 2022 FloodList
27 0 deaths and 42 displaced 24 Aug 2022 26 Aug 2022 FloodList

Flood polygons

This polygon (translucent blue with a blue border) is drawn by the analysts recording the flood event. It is meant to include all the areas reported as affected, by official source or the media. It does not represent the area actually under water.

Microwave flood detection

Flooded area, as detected in microwaves by the Global Flood Detection System of the JRC, based on NASA TRMM/GPM observations. This system has a rather low resolution (of 5-10km) but is not affected by clouds.
For more details, see http://www.unisdr.org/files/9622_LBNA23303ENC002.pdf.
The areas with a flood signal along the coast are an artefact of the system and should not be considered.

Optical Flood detection

Flooded area as detected in optical wavelengths by NASA/MODIS, known as "MODIS Flood Product". Data are made available by NASA GSFC Flood Mapping Project, http://oas.gsfc.nasa.gov/floodmap/index.html. Resolution of 250m, heavily affected by cloud cover.