Skip to content

DEMO EDITIONFictional stories and outlets. Not current news.How this was made

FordColter

Saranth evacuates 4,500 people below Teyla Lake as its moraine dam seeps

The hazards agency raised its alert to Level 3 of 4 and says overflow is not expected before mid-November. Independent hydrologists warn the dam could fail sooner, before the lake reaches the top.

Version 314 sources, 11 outletsPartly corroborated

Automated, source-linked synthesis. Published automatically after validation. Select any text to ask about it.

FC/0680 · CLIMATETEYLA LAKE
Teyla Lake and the valley below it, drawn as contours from the gauge readings in this briefing. Illustration: Ford Colter.Original illustration · licence: generated in-house · no third-party imagery

The short version

  • Saranth's hazards agency raised the Teyla Lake alert to Level 3 of 4 and ordered about 4,500 people in Kell, Dunmere and Asby to leave.23
  • More water is seeping through the moraine that holds back the glacial lake, and the lake has risen by more than 1.7 metres in a week.25
  • The agency does not expect the lake to reach its overflow notch before mid-November; independent hydrologists say internal erosion could breach the dam within days.78
  • About 2,800 evacuees have registered at shelters in Lowmarch, and valley schools are closed.6

What we know

EACH FACT CARRIES ITS EVIDENCE STATUS
  • Official statement

    The alert is at Level 3 of 4. Residents of Kell, Dunmere and Asby, about 4,500 people, were told to leave by 18:00 on Tuesday.23

  • Corroborated

    Increased seepage has been observed at the foot of the moraine dam.37

  • Official statement

    The lake stood at 12.95 metres on 3 November, up from 11.2 metres on 28 October. The daily rise has slowed to 0.15 metres. The overflow notch is at 14.0 metres.5

  • Official statement

    The agency does not expect overflow before mid-November and is measuring seepage hourly.8

  • Reported

    About 2,800 evacuees had registered at three shelters in Lowmarch by Tuesday night. Valley schools are closed.6

  • Reported

    Some farmers in Kell asked to stay with livestock; the agency said it could not guarantee rescue for anyone who remained.4

  • Reported

    Army engineers began installing siphons that the agency says could lower the lake by up to 0.1 metres a day once running.10

  • Reported

    Valdoria has put two border towns on flood watch and offered pumps and rescue boats.9

What is still unclear

Developing: details may change

  • When, or whether, the dam could fail. The agency's assessment is based on the overflow level; independent hydrologists say a breach could come sooner and below it.78
  • Whether the siphons can keep up. At up to 0.1 metres a day, they would remove less than the latest daily rise of 0.15 metres.510
  • Where everyone has gone. About 4,500 people were told to leave and about 2,800 have registered at shelters; the authorities have not said how many are staying with relatives or remain in the zone.26
  • A forum post claims a new crack has appeared on the dam face. It is a single anonymous post, the photograph has not been verified, and the agency has not commented.12

Where the reporting differs

POSITIONS ARE ATTRIBUTED, NEVER AVERAGED

How soon the dam could fail

A
Saranth Water and Hazards Agency (Director Anton Veyle)
On current readings, the lake will not reach the overflow notch before mid-November; the evacuation is precautionary and proportionate.8
B
University of Orrin glacier unit (Dr Tamsin Erl)
Seepage suggests internal erosion, which can breach the dam before the overflow level, possibly within days.7

Whether the evacuation order is right

A
The Lantern Review (commentary)
Moving people while the road is open is what a warning system is for.14
B
Civic Ledger (commentary)
The order leaves out farms and cabins above Asby and came too late if the shorter timescale is right.13
C
Harbour Quarterly (analysis)
Early evacuation has a cost in public trust if the dam holds, and waiting has a cost if it fails.11

Why it matters

If a moraine dam breaches, a glacial lake can empty in hours and send a fast flood of water and debris down the valley.1

Thousands of people are out of their homes, schools are closed and some farmers have chosen to stay with livestock.46

The Teyla river crosses into Valdoria about 60 km below the lake, so the risk extends beyond Saranth's border.9

In numbers

CHART DRAWN FROM CITED DATA
Teyla Lake level by daymetres on the gauge

Daily low and high gauge readings published by the Saranth Water and Hazards Agency. The line marks the overflow notch in the moraine crest.

Teyla Lake level by day
LabelValue (metres on the gauge)
28 Oct11.2 (range 11.05 to 11.35)
29 Oct11.6 (range 11.4 to 11.75)
30 Oct12 (range 11.8 to 12.15)
31 Oct12.35 (range 12.2 to 12.5)
1 Nov12.65 (range 12.5 to 12.75)
2 Nov12.8 (range 12.7 to 12.9)
3 Nov12.95 (range 12.85 to 13.05)

Timeline

EVERY ENTRY LINKS TO ITS SOURCE

  1. Alert raised to Level 3; three villages told to leave.2

  2. Buses sent from Orrin as the evacuation begins.3

  3. Most of Kell's residents have left.4

  4. Gauge reads 12.95 metres, 1.05 metres below the overflow notch.5

  5. About 2,800 evacuees registered at shelters in Lowmarch.6

  6. Independent hydrologists warn of a possible breach within days.7

  7. Agency says overflow is not expected before mid-November.8

  8. Army engineers begin installing siphons.10

Who and where

PRESS A NAME TO ASK ABOUT IT
PersonDirector, Saranth Water and Hazards Agency
Describes the evacuation as precautionary and proportionate.8
PersonResearcher, University of Orrin glacier unit
Warns that internal erosion could breach the dam within days.7
Place
Glacial lake in the Saranth highlands, held back by a moraine left by a retreating glacier.21
Place
Village of about 1,300 people, the first in the valley to empty.4
Place
Town hosting three shelters for evacuees.46
Organisation
Statutory body that monitors the lake, sets alert levels and ordered the evacuation.28
Organisation
Independent researchers who dispute the agency's timescale.7

Terms to know

A natural dam of loose rock and soil left by a retreating glacier, behind which meltwater collects.1
A sudden flood released when the dam holding back a glacial lake gives way.1
The lowest point in the moraine crest. Above 14.0 metres on the gauge, water would spill over it.5
Water seeping through a dam carries material away from inside it, which can weaken the dam before water reaches the top.7
The third of Saranth's four alert levels for the lake; at this level residents of the lower villages were ordered to leave.2

STUDY THIS

New to this? Switch to the study view.

A guided path through the background: key terms first, then the people, the full timeline and the open questions.

Study this storyGuide: Glacial lake floods

Questions readers ask

Source ledger

Every record this briefing draws on, with its publisher, time, type and role. Headlines and links only: read the original reporting at the source. Snapshot of sources taken 4 Nov, 18:05.

Source directory

Primary evidence3

  1. 2Saranth Water and Hazards Agency

    Primary / official
    Teyla Lake alert raised to Level 3 (opens the publisher's site)
    Published
    3 Nov, 02:55
    Type
    official
    From
    Saranth
    Link
    hazards.saranth.example

    Fictional demo outlet: this link does not resolve.

  2. 5Saranth Water and Hazards Agency

    Primary / official
    Teyla Lake gauge readings, 28 October to 3 November (opens the publisher's site)
    Published
    3 Nov, 21:15
    Type
    data
    From
    Saranth
    Link
    hazards.saranth.example

    Fictional demo outlet: this link does not resolve.

  3. 8Saranth Water and Hazards Agency

    Primary / official
    Agency assessment: overflow not expected before mid-November (opens the publisher's site)
    Published
    4 Nov, 07:15
    Type
    official
    From
    Saranth
    Link
    hazards.saranth.example

    Fictional demo outlet: this link does not resolve.

Corroborating report2

  1. 3Continental Press Agency

    Wire
    Saranth orders evacuation of three villages below glacial lake (opens the publisher's site)
    Published
    3 Nov, 05:25
    Type
    report
    From
    Ilvar Basin
    Link
    continentalpress.example

    Fictional demo outlet: this link does not resolve.

  2. 7Delta Hydrology Review

    Specialist
    Independent hydrologists warn Teyla dam could fail below overflow level (opens the publisher's site)
    Published
    4 Nov, 03:55
    Type
    report
    From
    Ilvar Basin
    Link
    deltahydrology.example

    Fictional demo outlet: this link does not resolve.

Attributed claim5

  1. 1Delta Hydrology Review

    Specialist
    What is a glacial lake outburst flood? (opens the publisher's site)
    Published
    2 Nov, 22:45
    Type
    explainer
    From
    Ilvar Basin
    Link
    deltahydrology.example

    Fictional demo outlet: this link does not resolve.

  2. 4Saranth Observer

    Reported journalism
    'We packed the photographs first': Kell leaves its homes (opens the publisher's site)
    Published
    3 Nov, 16:15
    Type
    report
    From
    Saranth
    Link
    saranthobserver.example

    Fictional demo outlet: this link does not resolve.

  3. 6Basin Broadcasting Service

    Reported journalism
    Shelters fill as schools close in the lower Teyla valley (opens the publisher's site)
    Published
    4 Nov, 00:35
    Type
    report
    From
    Ilvar Basin
    Link
    bbs-basin.example

    Fictional demo outlet: this link does not resolve.

  4. 9The Valdorian Herald

    Reported journalism
    Valdorian border towns placed on flood watch (opens the publisher's site)
    Published
    4 Nov, 10:35
    Type
    report
    From
    Valdoria
    Link
    valdorianherald.example

    Fictional demo outlet: this link does not resolve.

  5. 10Meridian Wire

    Wire
    Army engineers begin siphoning water from Teyla Lake (opens the publisher's site)
    Published
    4 Nov, 12:15
    Type
    report
    From
    Merovan Islands
    Link
    meridianwire.example

    Fictional demo outlet: this link does not resolve.

Commentary sampled for framing3

  1. 11Harbour Quarterly

    Analysis / commentary
    Evacuating early has a cost, and so does waiting (opens the publisher's site)
    Published
    4 Nov, 13:55
    Type
    analysis
    From
    Merovan Islands
    Link
    harbourquarterly.example

    Fictional demo outlet: this link does not resolve.

  2. 13Civic Ledger

    Analysis / commentary
    Why stop at three villages? (opens the publisher's site)
    Published
    4 Nov, 16:25
    Type
    opinion
    From
    Valdoria
    Link
    civicledger.example

    Fictional demo outlet: this link does not resolve.

  3. 14The Lantern Review

    Analysis / commentary
    Saranth acted on evidence before it was certain (opens the publisher's site)
    Published
    4 Nov, 18:05
    Type
    opinion
    From
    Valdoria
    Link
    lanternreview.example

    Fictional demo outlet: this link does not resolve.

Monitored lane: tracked, not relied on1

  1. 12Open Basin Forum

    Monitored
    Post: 'new crack on the dam face this morning' (opens the publisher's site)
    Published
    4 Nov, 15:35
    Type
    report
    From
    Ilvar Basin
    Link
    openbasin.example

    Fictional demo outlet: this link does not resolve.

Revisions

Published versions are kept as they were. A correction creates a new version and a note.

  1. v34 Nov, 22:15Added the agency's mid-November assessment and the start of siphoning. An unverified forum claim about a crack is listed under what is still unclear, not as fact.
  2. v24 Nov, 13:15Updated with new reporting; 10 source records now cited.
  3. v13 Nov, 20:15First published briefing, built from 4 source records.

Correction

An earlier version said the siphons were already lowering the lake.

Version 2 of this briefing described the army siphons as running. The cited report says engineers had begun installing them, and the agency said they could remove up to 0.1 metres a day once running. Version 3 corrects this. (Fictional demo correction.)

How this briefing was made

Method
Clustered from 14 records, synthesised under citation rules, validated before publishing
Prompt version
synthesis.v1+classify.v1
Model provider
Deterministic demo provider (no live model)
Review
auto published
Snapshot
d8bf19e4-6dd4-454c-a425-ad3c7a562994

No confidence percentages: evidence status is shown claim by claim instead. Read the methodology or report an error.

Related briefings

Permalink