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Lower Ketchikan Lake above Ketchikan Lake Dam near Ketchikan

Highest listed crest 350.20 ftFlood stage 349.0 ft10 crests since 2013

The Lower Ketchikan Lake above Ketchikan Lake Dam near Ketchikan crested above flood stage 3 times among the 10 crests the National Weather Service lists from 2013 to 2024. The highest, 350.20 ft on January 21, 2015, was moderate flooding, 1.20 feet above flood stage.

The gauge

Highest listed crest
350.20 ft
January 21, 2015
Flood stage
349.0 ft
Major flooding from 354.0 ft
Crests at major
0
3 above flood stage
Most recent flood crest
December 5, 2020
350.10 ft, moderate flooding
Identifiers
NWS KDLA2
No USGS station

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Lower Ketchikan Lake above Ketchikan Lake Dam near Ketchikan
Action stage348.04Dec 6, 2024The level at which the NWS or its partners begin to take action
Flood stage (minor)349.01Dec 14, 2013Minimal or no property damage, but possibly some public threat
Moderate flood stage350.02Dec 5, 2020Some inundation of structures and roads near the stream
Major flood stage354.00—Extensive inundation of structures and roads

Every listed crest

10 crests from 2013 to 2024. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Lower Ketchikan Lake above Ketchikan Lake Dam near Ketchikan, 2013 to 2024 344346348350352354ft Flood stage 349.0 ftMajor 354.0 ft Dec 14, 2013: 349.30 ft, minor floodingJan 21, 2015: 350.20 ft, moderate floodingFeb 26, 2016: 348.28 ft, action stageAug 28, 2017: 348.71 ft, action stageDec 17, 2017: 346.57 ft, below flood stageDec 5, 2020: 350.10 ft, moderate floodingJun 5, 2021: 348.14 ft, action stageJul 19, 2022: 344.66 ft, below flood stageFeb 12, 2023: 347.24 ft, below flood stageDec 6, 2024: 348.50 ft, action stage Highest, 350.20 ft, Jan 21, 2015 201520202025

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Lower Ketchikan Lake above Ketchikan Lake Dam near Ketchikan 2010s: 2 2 2020s: 1 2010s2020s
  1. These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
  2. Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.

Highest crests

Highest listed crests, Lower Ketchikan Lake above Ketchikan Lake Dam near Ketchikan
1Jan 21, 2015350.20+1.20Moderate—
2Dec 5, 2020350.10+1.10Moderate—
3Dec 14, 2013349.30+0.30Minor—
4Aug 28, 2017348.71−0.29Action—
5Dec 6, 2024348.50−0.50Action—
6Feb 26, 2016348.28−0.72Action—
7Jun 5, 2021348.14−0.86Action—
8Feb 12, 2023347.24−1.76Below flood stage—
9Dec 17, 2017346.57−2.43Below flood stage—
10Jul 19, 2022344.66−4.34Below flood stage—

Other gauges in Ketchikan Gateway Borough

Flood gauges in Ketchikan Gateway Borough
Ketchikan4.55.19 ft, Oct 8, 19740
Ketchikan Powerhouse near Ketchikan63.564.29 ft, Dec 5, 20200
Lake Connell Dam near Ketchikan252.0253.00 ft, Oct 17, 20230

Ketchikan Gateway Borough: every hazard · River floods across the country · Alaska

NOAA National Water Prediction Service, gauge KDLA2, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.