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Little Susitna River at Hatcher Pass Rd Bridge

Highest listed crest 12.45 ftFlood stage 10.0 ft12 crests since 2003

The Little Susitna River at Hatcher Pass Rd Bridge crested above flood stage 2 times among the 12 crests the National Weather Service lists from 2003 to 2015. The highest, 12.45 ft on September 21, 2012, was moderate flooding, 2.45 feet above flood stage. 2 other gauges on the Little Susitna River crested above flood stage within a week of it, 1 at its own highest listed crest.

The gauge

Highest listed crest
12.45 ft
September 21, 2012
Flood stage
10.0 ft
No major stage set
Crests at major
0
2 above flood stage
Most recent flood crest
September 21, 2012
12.45 ft, moderate flooding
Location
Matanuska-Susitna Borough
Near Wasilla (11.6 mi)
Identifiers
NWS LSOA2
Out of service

Flood stages

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

Flood categories, Little Susitna River at Hatcher Pass Rd Bridge
Action stage9.01Nov 10, 2005The level at which the NWS or its partners begin to take action
Flood stage (minor)10.00—Minimal or no property damage, but possibly some public threat
Moderate flood stage10.92Sep 21, 2012Some inundation of structures and roads near the stream

Every listed crest

12 crests from 2003 to 2015. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Little Susitna River at Hatcher Pass Rd Bridge, 2003 to 2015 68101214ft Flood stage 10.0 ft Nov 21, 2003: 8.21 ft, below flood stageOct 1, 2004: 7.58 ft, below flood stageNov 10, 2005: 9.67 ft, action stageAug 19, 2006: 10.97 ft, moderate floodingAug 6, 2007: 8.75 ft, below flood stageJun 22, 2008: 7.88 ft, below flood stageMay 14, 2009: 7.86 ft, below flood stageJul 21, 2010: 7.76 ft, below flood stageAug 9, 2011: 8.33 ft, below flood stageSep 21, 2012: 12.45 ft, moderate floodingJun 10, 2013: 8.48 ft, below flood stageOct 1, 2015: 8.96 ft, below flood stage Highest, 12.45 ft, Sep 21, 2012 200520102015

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Little Susitna River at Hatcher Pass Rd Bridge 2000s: 1 1 2010s: 1 2000s2010s
  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, Little Susitna River at Hatcher Pass Rd Bridge
1Sep 21, 201212.45+2.45Moderate—
2Aug 19, 200610.97+0.97Moderate—
3Nov 10, 20059.67−0.33Action—
4Oct 1, 20158.96−1.04Below flood stage—
5Aug 6, 20078.75−1.25Below flood stage—
6Jun 10, 20138.48−1.52Below flood stage—
7Aug 9, 20118.33−1.67Below flood stage—
8Nov 21, 20038.21−1.79Below flood stage—
9Jun 22, 20087.88−2.12Below flood stage—
10May 14, 20097.86−2.14Below flood stage—
11Jul 21, 20107.76−2.24Below flood stage—
12Oct 1, 20047.58−2.42Below flood stage—

The worst floods along the Little Susitna River

For this gauge's highest crests, the other gauges on the Little Susitna River that crested above flood stage within a week.

September 21, 2012: 12.45 ft here, moderate flooding

August 19, 2006: 10.97 ft here, moderate flooding

Gauges on the Little Susitna River

Flood gauges sharing the river's name, linked within 80 miles of one another.

Flood gauges on the Little Susitna River
Hatcher Pass Rd Bridge this gaugeAK10.012.45 ft, Sep 21, 20120
Parks Hwy Bridge near HoustonAK11.013.95 ft, Sep 22, 20122
PalmerAK6.59.00 ft, Aug 19, 20062

Other gauges in Matanuska-Susitna Borough

Flood gauges in Matanuska-Susitna Borough
Chelatna Lake near Lake Outlet3.34.29 ft, Sep 24, 20120
Willow176.0179.70 ft, Sep 21, 20120
Parks Hwy Bridge near Houston11.013.95 ft, Sep 22, 20122
Palmer6.59.00 ft, Aug 19, 20062
Paxson6.58.24 ft, Aug 11, 19710
Parks Highway Bridge9.011.30 ft, Oct 10, 19861
Oilwell Road near Trapper Creek16.519.05 ft, Jul 23, 20260
Palmer17.517.96 ft, Aug 7, 20180
Skwentna42.043.96 ft, Jun 25, 20120
Gold Creek14.018.30 ft, Jun 15, 19620
Denali12.513.32 ft, Aug 10, 19710
Alaska Railroad Bridge 227.1 at Talkeetna13.016.55 ft, Oct 11, 19862
Talkeetna12.517.38 ft, Oct 11, 19862
Parks Highway near Willow10.013.86 ft, Oct 11, 19863
Willow5.99.01 ft, Oct 11, 19865
Lake Creek20.522.54 ft, Aug 30, 20250

Matanuska-Susitna Borough: every hazard · River floods across the country · Alaska

NOAA National Water Prediction Service, gauge LSOA2, 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.