177
FGAK78 PAFC 212041
ESFAFC
AKZ102-112-121-145-241200-

Hydrologic Outlook
National Weather Service Anchorage AK
1141 AM AKST Thu Nov 21 2024

...RAPID FREEZE UP OF LOCAL RIVERS AND STREAMS ONGOING ACROSS
ANCHORAGE, MAT-SU, AND KENAI AREAS...

Recent abnormally cold temperatures have caused many rivers and
streams across the Mat-Su, Anchorage, and Kenai areas to rapidly
freeze up. This has caused ice dams to form on some waterways
leading to rising water levels with some localized overflow
flooding occurring in vicinity of ice dams. Currently, overflow
from Chester Creek has inundated the Chester Creek trail tunnel
under Arctic Blvd. Anchor ice build up and ice dams on Peters
Creek, Ship Creek, Campbell Creek, Little Susitna River, and
Willow Creek are leading to near bankfull conditions. Water
levels will continue to fluctuate until the cold temperatures
conclude or when ice cover is more complete upstream.
Additionally, above freezing temperatures aloft forecast through
Saturday are aiding in snowmelt at higher elevations, increasing
water levels downstream.

For additional information and the latest river forecasts, please
visit: https://www.weather.gov/aprfc/.

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