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Weather Forecast Office Juneau, AK

Alaska Pacific River Forecast Center

Hydrograph

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About this graph

Tabular Data (UTC)

Tabular Data (AKDT)

Datum: Not Available

Metadata

NOTE:

Click here for Suicide Basin Monitoring Page

NOTE: Forecasts for the Mendenhall Lake at Lake Level are issued routinely during the warm season, and as needed at other times of the year.

Return to Area Map

Upstream Gauge

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 07/22/2011
(8) 10.92 ft on 07/19/2018
(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) 9.22 ft on 10/08/2023
(2) 14.97 ft on 08/06/2023
(3) 10.33 ft on 10/27/2022
(4) 8.99 ft on 10/01/2022
(5) 8.11 ft on 07/08/2022
(6) 11.56 ft on 08/14/2021
(7) 10.17 ft on 08/10/2020
(8) 11.53 ft on 08/01/2020
(9) 9.29 ft on 09/21/2019
(10) 10.43 ft on 08/09/2018
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.

Show FEMA's National Flood Hazard Layers

Zoom Level:12

	Gauge Location	Disclaimer
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

If you notice any errors in the below information, please contact our Webmaster
15	Up to 2 feet of water will be covering Killewich Dr. Water starts to enter the backyards of houses along the south side of Marion Dr. Rivercourt Way, Lakeview Ct, Center Ct, Parkview Ct, Turn St & Northland St could have up to 1.5 feet of water over the road. Up to 1 foot of water covering Riverside Dr at Tournure St.
14.5	Meander Way will be under 2 to 4 feet of water. Water will start to enter the lowest levels of several homes on Meander Way. Water will start to flow into backyards along Killewich Dr and onto Riverside Dr near Melvin Park. Significant flooding of multiple homes along View Dr.
14	Water starts to enter Northland St, Turn St, Stephen Richards Memorial Dr, Parkview & Center Ct. Up to 1 to 2 feet of water will cover Meander Way.
13.5	Water will begin to flood at the north end of Meander Way as well as Stream Ct & Northland St from storm drains. Also storm drains along Riverside Dr and Riverwood Dr start to back up. Severe bank erosion along unreinforced river banks.
13	Water begins to flow through some backyards of homes on the northside of View Dr and flood low lying areas. Locations on View Dr will see depths of 1 to 4 feet of water in homes.
12.5	2 to 4 feet of water in some backyards along Meander Way on the the river side.
12	Water starts to back up between Riverside Dr at Tournure St and Mendenhall River School. Significant bank erosion along unreinforced river banks.
11.5	Houses along the south side and the east end of View Dr will start to flood.
11	View Dr will be flooded and impassable with significant flooding to some homes in the area. Locations below back loop bridge will see bank erosion along unreinforced river banks along with hazardous navigation from debris in the river. Homes along the river on Meander Way will begin to see flooding of some backyards. Portions of the Dredge Lake Trail System will be impassable. Flood waters start to reach Dredge Lake.
10.5	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 Dr will have up to 3 feet 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.
9.5	Areas along View Dr will start to flood and cause minor flooding of yards. There will be 0.5 feet of water over the Skaters Cabin Road between Skaters Cabin and West Glacier Trailhead. Campsite 7 will be flooded with water starting to flow over the road between campsites 8 and 9 in the Mendenhall Campground.
9	Water starts to cover 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.
Photos (1) Moderate flooding along Mendenhall River. MNDA2 = 10.5ft (2) Flooding along the Mendenhall River near Meander Way. MNDA2 = 10.9ft (3) Moderate flooding along View Drive. MNDA2 = 10.9ft. (4) Flooding pictures of Mendenhall campground (5) Flooding pictures of West Glacier spur road (6) Bankfull stage 9.0ft #1 (7) Bankfull stage 9.0ft #2 (8) Bankfull stage 9.0ft #3

About This Location

Latitude: 58.429722° N, Longitude: 134.572778° W, Horizontal Datum: NAD83/WGS84

River Stage Reference Frame	Gauge Height	Flood Stage	Uses
NWS stage	0 ft	9 ft	Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum	Elevation (gauge height = 0)	Elevation (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	0 ft	9.1 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:

U.S. Geological Survey (USGS) Data and Site Info for Lake Level

Additional Information

Water Temperature Chart

Resources

Hydrologic Resources

Additional Resources

Collaborative Agencies

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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