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Hydrograph River at a Glance Download
Falls Creek (AK) near Petersburg Stage (ft)Observed: 18.02 ft at 7:54PM Nov 16, 2020Observed: 18 ft at 2:25AM Nov 17, 2020Observed: 17.99 ft at 6:43AM Nov 17, 2020Observed: 17.95 ft at 5:33PM Nov 17, 2020Observed: 17.97 ft at 9:52PM Nov 17, 2020Observed: 17.96 ft at 2:11AM Nov 18, 2020Observed: 17.95 ft at 8:39AM Nov 18, 2020Observed: 17.91 ft at 8:36AM Nov 19, 2020Observed: 17.82 ft at 10:42AM Nov 20, 2020Observed: 17.85 ft at 9:34PM Nov 20, 2020Observed: 17.8 ft at 1:52AM Nov 21, 2020Observed: 17.81 ft at 8:23AM Nov 21, 2020Observed: 18.29 ft at 4:00AM Nov 22, 2020Observed: 18.15 ft at 2:52PM Nov 22, 2020Highest Observation: 18.41 ft at 3:54AM Nov 23, 2020FLSA2(plotting HGIRZ) Graph Created (11:17AM Nov 23, 2020)ObservedLatest observed value: 18.41 ft at 3:54 AM AKST 23-Nov-2020. Flood Stage is 22.5 ft
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Tabular Data (UTC)
Tabular Data (AKST)
XML Data
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Datum: Not Available
NOTE: Gage data do not meet the quality standards of USGS gages.

NOTE: Stage may be affected by ice during winter months.

NOTE: Forecasts are not available for the Falls Creek (AK) near Petersburg. Only observed stages are available for this point.

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Flood Categories (in feet)
Major Flood Stage: 27
Moderate Flood Stage: 24
Flood Stage: 22.5
Action Stage: 21.5
Low Stage (in feet): -9999

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.
Zoom Level:14
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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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27 Water levels will be at the horizontal ibeam of the 9 mile bridge along Mitkof highway, this is major flood stage.
24 Water levels will be at the bridge abutment of 9 mile bridge along Mitkof Highway, this is moderate flood stage.
(1) Looking down stream from 9mi bridge
(2) Looking upstream from 9mi bridge
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Latitude: 56.681700° N, Longitude: 132.923500° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 22.5 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 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  
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NWS Information
National Weather Service
Juneau Weather Forecast Office
8500 Mendenhall Loop Road
Juneau, AK 99801
(907) 790-6802
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Page last modified: 2-Nov-2020 7:26 PM
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