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George Coyle Emergency Management Specialist Alaska Division of Homeland Security & Emergency Management 9074287100 Or Toll Free at 18004782337 May, 2013 1

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Page 1: OVERVIEW OF THE 2013 RIVER WATCHleoimages.blob.core.windows.net/hubfiles/ALASKA/22... · because potentially dangerous conditions may develop and go unnoticed due to the vast uninhabited

George CoyleEmergency Management Specialist 

Alaska Division of Homeland Security & Emergency Management

907‐428‐7100Or Toll Free at 1‐800‐478‐2337

May, 2013

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What is River Watch?

Each year, the State of Alaska Division of Homeland  Security and Emergency Management (DHS&EM) and 

the National Weather Service (NWS) separately fund a  joint program to provide advance and emergency 

notification of imminent snowmelt and ice jam  flooding to 76 Alaska villages, boroughs, and tribal 

councils.  This program is known as River Watch.

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Why the River Watch Program Exists•

To reduce the impact to communities from ice jam 

flooding. 

To inform communities of threats and provide them  with ways to protect themselves. 

Because significant flooding in major river systems is  not new to Alaska. Since 1977, flooding caused by ice  jams has occurred 24 times. 

And since 1978, the State of Alaska has spent over 98  million dollars in assistance due to ice jam flooding.

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Field Observations

The primary source of 

river stage and ice jam  conditions is provided by 

village observers and local  pilots.

NWS contacts observers  in several river villages for 

daily reports.  These  reports are also provided 

to DHS&EM for planning.

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NWS Weather Projections

Based on village reports, 

river stage gauge data, and  climate modeling, the NWS  issues regular projections.

DHS&EM monitors two 

main projection: river ice  conditions (top right) and  statewide weather and flood 

information (bottom right).  

Portions of the State with 

significant weather are  color‐coded to assign the 

appropriate threat level.

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How Does the River Watch  Field Program Begin?

Once ice deterioration begins, personnel from 

DHS&EM and APRFC normally deploy to monitor the  rivers, prepare communities, warn of impending 

flooding and advise community leaders on emergency  management issues. 

Two field teams are normally deployed:

The Yukon River team is based initially out of Fort  Yukon, Circle, or Fairbanks, and moves downriver to 

Galena then to St. Mary’s as the river breaks up.

The Kuskokwim River team is based initially out of  McGrath or Aniak, and ends up in Bethel if necessary.

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Which Rivers are Flown?

ALWAYS ‐

Yukon and Kuskokwim Rivers.  These two  river systems are normally flown to some degree each  year because they together have the highest percentage 

(63%) and greatest likelihood for ice jam flooding, and  because potentially dangerous conditions may develop  and go unnoticed due to the vast uninhabited areas 

which separate the river communities).•

SOMETIMES ‐

Tanana, Koyokuk, Chena, and their 

tributaries.  These river systems are normally  monitored from Anchorage and/or Fairbanks unless 

local observations or NWS projections identify a flood  threat.

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Staging Locations

Beaver

Koyukuk

Ruby

Galena

FairbanksTanana

Rampart

StevensVillage

Eagle

Circle

Ft Yukon

Hughes

Holy Cross

RussianMission

St MarysMt.Village

AlakanukEmmonak

Grayling

Kaltag

Tazlina

GlennallenGulkana

Northway

TanacrossBig Delta

Shungnak

Buckland

Noatak

Kwethluk

Bethel Tuluksak

Aniak

Crooked Creek

Red Devil

Stony River

McGrath Nikolai

Anvik

Kalskag

Yentna

Skwentna

Nenana

Sunshine

Napakiak

AmblerChalkyitsik

Allakaket

Huslia

Kotzebue

Primary Staging

Secondary Staging

KobukBettles

PilotStation

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Contact with the Local Community

When not in the air, the teams 

visit communities to provide  face‐to‐face contact, compare  current river ice information 

with historical accounts, and  advise local officials on ways  to lessen future damages 

should flooding continue.

Whenever a risk arises, 

warnings and other  information are provided to 

the community via local  marine‐band radio or through 

public radio interviews.

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Kwethluk Kwethluk May 2005May 2005

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Eagle 2009

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To Follow River Watch or  Report an Observation

Log on to:  http://aprfc.arh.noaa.gov/

Or

www.ready.alaska.gov

You can call the APRFC at 1‐800‐847‐1739

to  report ice conditions

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Any Questions  about River Watch?