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This probabilistic forecast is issued by the Alaska Pacific River Forecast Center.
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About this graph
Forecasts for the Mendenhall Lake at Lake Level are issued routinely during the warm season, and as needed at other times of the year.
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Zoom Level:12
Flood Categories (in feet)
Major Flood Stage: 14
Moderate Flood Stage: 10
Flood Stage: 9
Action Stage: 8
Low Stage (in feet): -9999

Historic Crests
(1) 14.97 ft on 08/06/2023
(2) 11.99 ft on 07/01/2016
(3) 11.85 ft on 07/11/2014
(4) 11.56 ft on 08/14/2021
(5) 11.53 ft on 08/01/2020
(6) 11.18 ft on 09/11/1995
(7) 10.92 ft on 07/19/2018
(8) 10.92 ft on 07/22/2011
(9) 10.91 ft on 09/08/1981
(10) 10.88 ft on 08/12/2014
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 14.97 ft on 08/06/2023
(2) 10.33 ft on 10/27/2022
(3) 8.99 ft on 10/01/2022
(4) 8.11 ft on 07/08/2022
(5) 11.56 ft on 08/14/2021
(6) 10.17 ft on 08/10/2020
(7) 11.53 ft on 08/01/2020
(8) 9.29 ft on 09/21/2019
(9) 10.43 ft on 08/09/2018
(10) 10.92 ft on 07/19/2018
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
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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.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
10.9 View Drive will be flooded and impassable with significant flooding to some homes in the area. Locations below back loop bridge will begin to see flooding of some yards, significant bank erosion along with hazardous navigation from debris in the river.
10.4 Significant flooding along the Mendenhall Lake area with more than 3 feet of water in places and the Mendenhall campground will be evacuated. Some homes along View Drive will have up to 3 ft of water in yards.
10 Water levels will inundate Mendenhall Campground with up to 3 feet of water covering low areas as well as up to 1.5 feet of water covering Skaters Cabin Road. Portions of West Glacier Trail will be impassable.
9.69 There will be 7 inches of water over the Skaters Cabin Road between Skaters Cabin and West Glacier Trailhead. Campsite 7 will be flooded as well as water flowing over the road between campsites 8 and 9 in the Mendenhall campground.
9.4 The yards along View Drive will start to flood and cause minor flooding.
9.09 Water covers Skaters Cabin Road between Skaters Cabin and West Glacier Trailhead, also water will flow into the Mendenhall Lake Campground.
7.7 Nugget Falls trail begins to flood near the beginning of the trail. Along the Mendenhall River some sections will experience bank erosion resulting in dangerous tree fall. These conditions could make floating the river more hazardous with the higher water levels.
6.7 Nugget Falls trail begins to flood near the "causeway" at the end of the trail.
(1) NEW-Lookup table for the discontinued Mendenhall River gauge(NWS) and the Mendenhall Lake gauge(USGS
(2) Moderate flooding along Mendenhall River. MNDA2 = 10.5ft
(3) Flooding along the Mendenhall River near Meander Way. MNDA2 = 10.9ft
(4) Moderate flooding along View Drive. MNDA2 = 10.9ft.
(5) Flooding pictures of Mendenhall campground
(6) Flooding pictures of West Glacier spur road
(7) Bankfull stage 9.0ft #1
(8) Bankfull stage 9.0ft #2
(9) Bankfull stage 9.0ft #3

Other Real-time and/or Archive Data Sources:

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Water Temperature Chart
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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
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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