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Hydrograph River at a Glance Download
Matanuska River at Old Glenn Hwy Stage (ft)Observed: 3.82 ft at 2:00PM Nov 29, 2021Observed: 3.82 ft at 3:00PM Nov 29, 2021Observed: 3.82 ft at 4:00PM Nov 29, 2021Observed: 3.82 ft at 5:00PM Nov 29, 2021Observed: 3.82 ft at 6:00PM Nov 29, 2021Observed: 3.81 ft at 7:00PM Nov 29, 2021Observed: 3.8 ft at 8:00PM Nov 29, 2021Observed: 3.82 ft at 9:00PM Nov 29, 2021Observed: 3.81 ft at 10:00PM Nov 29, 2021Observed: 3.81 ft at 11:00PM Nov 29, 2021Observed: 3.82 ft at 12:00AM Nov 30, 2021Observed: 3.82 ft at 1:00AM Nov 30, 2021Observed: 3.8 ft at 2:00AM Nov 30, 2021Observed: 3.82 ft at 3:00AM Nov 30, 2021Observed: 3.81 ft at 4:00AM Nov 30, 2021Highest Observation: 3.85 ft at 5:00AM Nov 30, 2021Observed: 3.82 ft at 6:00AM Nov 30, 2021Observed: 3.84 ft at 7:00AM Nov 30, 2021Observed: 3.82 ft at 8:00AM Nov 30, 2021Observed: 3.81 ft at 9:00AM Nov 30, 2021Observed: 3.81 ft at 10:00AM Nov 30, 2021Observed: 3.8 ft at 11:00AM Nov 30, 2021Observed: 3.8 ft at 12:00PM Nov 30, 2021Observed: 3.8 ft at 1:00PM Nov 30, 2021Observed: 3.8 ft at 2:00PM Nov 30, 2021Observed: 3.79 ft at 3:00PM Nov 30, 2021Observed: 3.82 ft at 4:00PM Nov 30, 2021Observed: 3.82 ft at 5:00PM Nov 30, 2021Observed: 3.81 ft at 6:00PM Nov 30, 2021Observed: 3.81 ft at 7:00PM Nov 30, 2021Observed: 3.83 ft at 8:00PM Nov 30, 2021Observed: 3.8 ft at 9:00PM Nov 30, 2021Observed: 3.82 ft at 10:00PM Nov 30, 2021Observed: 3.81 ft at 11:00PM Nov 30, 2021Observed: 3.81 ft at 12:00AM Dec 01, 2021Observed: 3.8 ft at 1:00AM Dec 01, 2021Observed: 3.81 ft at 2:00AM Dec 01, 2021Observed: 3.79 ft at 3:00AM Dec 01, 2021Observed: 3.81 ft at 4:00AM Dec 01, 2021Observed: 3.78 ft at 5:00AM Dec 01, 2021Observed: 3.81 ft at 6:00AM Dec 01, 2021Observed: 3.8 ft at 7:00AM Dec 01, 2021Observed: 3.8 ft at 8:00AM Dec 01, 2021Observed: 3.81 ft at 9:00AM Dec 01, 2021Observed: 3.8 ft at 10:00AM Dec 01, 2021Observed: 3.79 ft at 11:00AM Dec 01, 2021Observed: 3.8 ft at 12:00PM Dec 01, 2021Observed: 3.79 ft at 1:00PM Dec 01, 2021Observed: 3.78 ft at 2:00PM Dec 01, 2021Observed: 3.78 ft at 3:00PM Dec 01, 2021Observed: 3.79 ft at 4:00PM Dec 01, 2021Observed: 3.79 ft at 5:00PM Dec 01, 2021Observed: 3.8 ft at 6:00PM Dec 01, 2021Observed: 3.8 ft at 7:00PM Dec 01, 2021Observed: 3.78 ft at 8:00PM Dec 01, 2021Observed: 3.78 ft at 9:00PM Dec 01, 2021Observed: 3.79 ft at 10:00PM Dec 01, 2021Observed: 3.8 ft at 11:00PM Dec 01, 2021Observed: 3.79 ft at 12:00AM Dec 02, 2021Observed: 3.81 ft at 1:00AM Dec 02, 2021Observed: 3.78 ft at 2:00AM Dec 02, 2021Observed: 3.76 ft at 3:00AM Dec 02, 2021Observed: 3.76 ft at 4:00AM Dec 02, 2021Observed: 3.77 ft at 5:00AM Dec 02, 2021Observed: 3.76 ft at 6:00AM Dec 02, 2021Observed: 3.76 ft at 7:00AM Dec 02, 2021Observed: 3.76 ft at 8:00AM Dec 02, 2021Observed: 3.76 ft at 9:00AM Dec 02, 2021Observed: 3.76 ft at 10:00AM Dec 02, 2021Observed: 3.78 ft at 11:00AM Dec 02, 2021Observed: 3.78 ft at 12:00PM Dec 02, 2021Observed: 3.79 ft at 1:00PM Dec 02, 2021Observed: 3.78 ft at 2:00PM Dec 02, 2021Observed: 3.77 ft at 3:00PM Dec 02, 2021Observed: 3.78 ft at 4:00PM Dec 02, 2021Observed: 3.8 ft at 5:00PM Dec 02, 2021Observed: 3.79 ft at 6:00PM Dec 02, 2021Observed: 3.79 ft at 7:00PM Dec 02, 2021Observed: 3.79 ft at 8:00PM Dec 02, 2021Observed: 3.79 ft at 9:00PM Dec 02, 2021Observed: 3.79 ft at 10:00PM Dec 02, 2021Observed: 3.78 ft at 11:00PM Dec 02, 2021Observed: 3.8 ft at 12:00AM Dec 03, 2021Observed: 3.78 ft at 1:00AM Dec 03, 2021Observed: 3.78 ft at 2:00AM Dec 03, 2021Observed: 3.78 ft at 3:00AM Dec 03, 2021Observed: 3.76 ft at 4:00AM Dec 03, 2021Observed: 3.76 ft at 5:00AM Dec 03, 2021Observed: 3.75 ft at 6:00AM Dec 03, 2021Observed: 3.73 ft at 7:00AM Dec 03, 2021Observed: 3.74 ft at 8:00AM Dec 03, 2021Observed: 3.75 ft at 9:00AM Dec 03, 2021Observed: 3.73 ft at 10:00AM Dec 03, 2021Observed: 3.72 ft at 11:00AM Dec 03, 2021Observed: 3.72 ft at 12:00PM Dec 03, 2021Observed: 3.71 ft at 1:00PM Dec 03, 2021Observed: 3.72 ft at 2:00PM Dec 03, 2021Observed: 3.72 ft at 3:00PM Dec 03, 2021Observed: 3.72 ft at 4:00PM Dec 03, 2021Observed: 3.72 ft at 5:00PM Dec 03, 2021Observed: 3.71 ft at 6:00PM Dec 03, 2021Observed: 3.71 ft at 7:00PM Dec 03, 2021Observed: 3.71 ft at 8:00PM Dec 03, 2021Observed: 3.68 ft at 9:00PM Dec 03, 2021Observed: 3.71 ft at 10:00PM Dec 03, 2021Observed: 3.7 ft at 11:00PM Dec 03, 2021Observed: 3.69 ft at 12:00AM Dec 04, 2021Observed: 3.69 ft at 1:00AM Dec 04, 2021Observed: 3.69 ft at 2:00AM Dec 04, 2021Observed: 3.68 ft at 3:00AM Dec 04, 2021Observed: 3.68 ft at 4:00AM Dec 04, 2021Observed: 3.68 ft at 5:00AM Dec 04, 2021Observed: 3.68 ft at 6:00AM Dec 04, 2021Observed: 3.69 ft at 7:00AM Dec 04, 2021Observed: 3.69 ft at 8:00AM Dec 04, 2021Observed: 3.69 ft at 9:00AM Dec 04, 2021Observed: 3.67 ft at 10:00AM Dec 04, 2021Observed: 3.68 ft at 11:00AM Dec 04, 2021Observed: 3.66 ft at 12:00PM Dec 04, 2021Observed: 3.67 ft at 1:00PM Dec 04, 2021Observed: 3.66 ft at 2:00PM Dec 04, 2021Observed: 3.67 ft at 3:00PM Dec 04, 2021Observed: 3.66 ft at 4:00PM Dec 04, 2021Observed: 3.67 ft at 5:00PM Dec 04, 2021Observed: 3.64 ft at 6:00PM Dec 04, 2021Observed: 3.64 ft at 7:00PM Dec 04, 2021Observed: 3.65 ft at 8:00PM Dec 04, 2021Observed: 3.64 ft at 9:00PM Dec 04, 2021Observed: 3.64 ft at 10:00PM Dec 04, 2021Observed: 3.63 ft at 11:00PM Dec 04, 2021Observed: 3.62 ft at 12:00AM Dec 05, 2021Observed: 3.61 ft at 1:00AM Dec 05, 2021Observed: 3.6 ft at 2:00AM Dec 05, 2021Observed: 3.61 ft at 3:00AM Dec 05, 2021Observed: 3.6 ft at 4:00AM Dec 05, 2021Observed: 3.63 ft at 5:00AM Dec 05, 2021Observed: 3.62 ft at 6:00AM Dec 05, 2021Observed: 3.62 ft at 7:00AM Dec 05, 2021Observed: 3.59 ft at 8:00AM Dec 05, 2021Observed: 3.55 ft at 9:00AM Dec 05, 2021Observed: 3.55 ft at 10:00AM Dec 05, 2021Observed: 3.55 ft at 11:00AM Dec 05, 2021Observed: 3.56 ft at 12:00PM Dec 05, 2021Observed: 3.56 ft at 1:00PM Dec 05, 2021Observed: 3.55 ft at 2:00PM Dec 05, 2021Observed: 3.56 ft at 3:00PM Dec 05, 2021Observed: 3.56 ft at 4:00PM Dec 05, 2021Observed: 3.57 ft at 5:00PM Dec 05, 2021Observed: 3.57 ft at 6:00PM Dec 05, 2021Observed: 3.57 ft at 7:00PM Dec 05, 2021Observed: 3.56 ft at 8:00PM Dec 05, 2021Observed: 3.58 ft at 9:00PM Dec 05, 2021Observed: 3.57 ft at 10:00PM Dec 05, 2021Observed: 3.58 ft at 11:00PM Dec 05, 2021Observed: 3.57 ft at 12:00AM Dec 06, 2021Observed: 3.59 ft at 1:00AM Dec 06, 2021Observed: 3.6 ft at 2:00AM Dec 06, 2021Observed: 3.6 ft at 3:00AM Dec 06, 2021Observed: 3.6 ft at 4:00AM Dec 06, 2021Observed: 3.59 ft at 5:00AM Dec 06, 2021Observed: 3.61 ft at 6:00AM Dec 06, 2021Observed: 3.6 ft at 7:00AM Dec 06, 2021Observed: 3.6 ft at 8:00AM Dec 06, 2021Observed: 3.61 ft at 9:00AM Dec 06, 2021Observed: 3.6 ft at 10:00AM Dec 06, 2021Observed: 3.59 ft at 11:00AM Dec 06, 2021Observed: 3.6 ft at 12:00PM Dec 06, 2021MAGA2(plotting HGIRG) Graph Created (1:01PM Dec 6, 2021)ObservedLatest observed value: 3.6 ft at 12:00 PM AKST 6-Dec-2021. Flood Stage is 8 ft
About this graph
Tabular Data (UTC)
Tabular Data (AKST)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Stage may be affected by ice.

NOTE: Forecasts for the Matanuska River at Old Glenn Hwy are issued routinely during the warm season, and as needed at other times of the year.

Return to Area Map
Upstream Gauge - at Glacier Park Resort Upstream Gauge
Flood Categories (in KCFS)
Major Flood Flow: 0
Moderate Flood Flow: 35
Flood Flow: 30
Action Flow: 15
Low Stage (in feet): -9999

Historic Crests
(1) 82,100 cfs on 08/10/1971
(2) 46,000 cfs on 09/22/1995
(3) 45,000 cfs on 06/21/2004
(4) 40,100 cfs on 06/08/1964
(5) 38,100 cfs on 09/21/2012
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 23,500 cfs on 07/09/2017
(2) 27,600 cfs on 07/03/2016
(3) 15,100 cfs on 07/08/2015
(4) 20,400 cfs on 07/09/2014
(5) 27,400 cfs on 06/18/2013
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.

Zoom Level:10
KML Image
Gauge LocationGauge Map Marker
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 Collapse
If you notice any errors in the below information, please contact our Webmaster
35000 This discharge (flow) level has a roughly 10 percent chance of being reached in any given year. Flooding near vulnerable locations along the active river channel may become more significant and widespread. This level was reached during the flooding in 2012.
30000 This discharge (flow) level has a roughly 20 percent chance of being reached in any given year. Additional vulnerable locations near the active river channel may experience some flooding at this level west of the Old Glenn Highway in the Butte and near Sutton from Milepost 64 to 66. Residents are advised that for the past several years at both of these locations, the main channel of the river has been shifting closer to the bank.
15000 This discharge (flow) level represents the higher end of the typical summertime range, and will likely be reached at least once nearly every year. Localized minor out-of-bank flooding may start to occur along parts of the Glenn highway, especially east of Sutton from milepost 64 to 66.
10.5 This stage (water level) is considered medium water level -- Class III whitewater to King's River; Class II below King's River
8 This stage (water level) is considered low water level -- Class II+ whitewater to King's River; Class I below King's River
Photos
(1) Downstream
(2) Upstream
(3) Matanuska from overlook
About This Location Collapse

Latitude: 61.608611° N, Longitude: 149.073056° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS flow Not Available Not Available 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 NULL NULL 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:

Additional Information Collapse
Click here to view the Matanuska River Flooding and Erosion Background Information page
Water Temperature Chart
Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
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: 2-Nov-2020 7:26 PM
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