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Hydrograph River at a Glance Download
Falls Creek (AK) near Petersburg Stage (ft)Observed: 18.31 ft at 5:00PM Apr 04, 2021Observed: 18.28 ft at 7:09PM Apr 04, 2021Observed: 18.29 ft at 9:17PM Apr 04, 2021Observed: 18.28 ft at 11:25PM Apr 04, 2021Observed: 18.38 ft at 10:18AM Apr 05, 2021Observed: 18.52 ft at 12:27PM Apr 05, 2021Highest Observation: 19.14 ft at 6:58PM Apr 05, 2021Observed: 19.12 ft at 11:18PM Apr 05, 2021Observed: 19 ft at 7:59AM Apr 06, 2021Observed: 18.58 ft at 10:08AM Apr 07, 2021Observed: 18.47 ft at 2:28PM Apr 07, 2021Observed: 18.44 ft at 8:59PM Apr 07, 2021Observed: 18.44 ft at 11:06PM Apr 07, 2021Observed: 18.42 ft at 5:35AM Apr 08, 2021Observed: 18.4 ft at 4:30PM Apr 09, 2021Observed: 18.44 ft at 6:38PM Apr 09, 2021Observed: 18.46 ft at 10:57PM Apr 09, 2021Observed: 18.46 ft at 1:05AM Apr 10, 2021Observed: 18.44 ft at 3:14AM Apr 10, 2021Observed: 18.42 ft at 5:22AM Apr 10, 2021Observed: 18.27 ft at 4:13PM Apr 10, 2021Observed: 18.21 ft at 5:15AM Apr 11, 2021Observed: 18.17 ft at 9:34AM Apr 11, 2021FLSA2(plotting HGIRZ) Graph Created (12:47PM Apr 11, 2021)ObservedLatest observed value: 18.17 ft at 9:34 AM AKDT 11-Apr-2021. Flood Stage is 22.5 ft
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Tabular Data (UTC)
Tabular Data (AKDT)
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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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