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Hydrograph River at a Glance Download
Trail River near Lawing Stage (ft)Observed: 5.9 ft at 8:00AM Aug 14, 2019Observed: 6 ft at 8:00AM Aug 15, 2019Highest Observation: 6.1 ft at 7:00AM Aug 16, 2019Highest Observation: 6.1 ft at 7:00AM Aug 17, 2019Observed: 6 ft at 7:00AM Aug 18, 2019Observed: 5.7 ft at 7:00AM Aug 19, 2019Observed: 5.3 ft at 7:00AM Aug 20, 2019Observed: 5 ft at 9:00AM Aug 21, 2019Observed: 4.8 ft at 7:00AM Aug 22, 2019Observed: 4.7 ft at 9:00AM Aug 23, 2019Highest Forecast: 4.57 ft 4:00PM Aug 23, 2019Forecast: 4.54 ft 10:00PM Aug 23, 2019Forecast: 4.51 ft 4:00AM Aug 24, 2019Forecast: 4.48 ft 10:00AM Aug 24, 2019Forecast: 4.45 ft 4:00PM Aug 24, 2019Forecast: 4.42 ft 10:00PM Aug 24, 2019Forecast: 4.4 ft 4:00AM Aug 25, 2019Forecast: 4.37 ft 10:00AM Aug 25, 2019Forecast: 4.35 ft 4:00PM Aug 25, 2019Forecast: 4.32 ft 10:00PM Aug 25, 2019MPTA2(plotting HGIRV) Graph Created (12:31PM Aug 23, 2019)ObservedForecast (issued 11:09AM Aug 22)Latest observed value: 4.7 ft at 9:00 AM AKDT 23-Aug-2019. Flood Stage is 10 ft
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Tabular Data (UTC)
Tabular Data (AKDT)
XML Data
RSS Files
Datum: Not Available
NOTE: Gauge readings not available during the winter months.

NOTE: Forecasts for the Trail River near Lawing are issued routinely during the warm season, and as needed at other times of the year.

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Downstream Gauge Downstream Gauge - at Cooper Landing
Flood Categories (in feet)
Major Flood Stage: 13
Moderate Flood Stage: 11.5
Flood Stage: 10
Action Stage: 8.5
Low Stage (in feet): -9999

Historic Crests
(1) 12.50 ft on 09/21/1995
(2) 11.93 ft on 09/18/1967
(3) 11.50 ft on 01/06/1999
(4) 11.09 ft on 10/24/2002
(5) 10.73 ft on 09/22/1976
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(P): Preliminary values subject to further review.

Recent Crests
(1) 8.40 ft on 06/19/2018
(2) 7.70 ft on 09/01/2017 (P)
(3) 8.00 ft on 06/26/2016 (P)
(4) 7.70 ft on 06/30/2015 (P)
(5) 7.90 ft on 08/13/2014 (P)
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(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
Zoom Level:11
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Gauge LocationGauge Map Marker
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
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If you notice any errors in the below information, please contact our Webmaster
12.5 This is the estimated level during the September 1995 flood event. Water was inundating parking lots and several roads around Moose Pass.
11.5 High water from the lake starts to encroach some structures at Moose Pass.
(1) Trail River staff gauge on old bridge pier.
(2) Downstream stage 6.7ft
(3) Upstream stage 6.7ft
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Latitude: 60.433056° N, Longitude: 149.373889° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 10 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 460 ft 470 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:

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Long-term Hydrograph
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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Anchorage Weather Forecast Office
6930 Sand Lake Road
Anchorage, AK 99502
(907) 266-5160
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Page last modified: 1-Mar-2019 12:31 AM
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