Skip Navigation Link weather.gov  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left Home News Organization
Bookmark and Share Navigation Bar End Cap

  

National Conditions
    Rivers
    Satellite
    Climate
    Observed Precip

Local Conditions
    Warnings
    Weather Forecast
    Radar

AHPS Documentation
    User Guide
    User Brochure

What is AHPS?
    Facts
    Our Partners

Feedback/Questions
    Provide Feedback
    View All Feedback
    Ask Questions

When flooded turn around don't drown
FloodSmart
USA.gov Official Web Portal
 

Visit https://www.weather.gov/owp/operations for access to new EXPERIMENTAL products and services from the National Water Center: National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook and the National Water Center Visualization Services, a suite of geospatial services depicting River Forecast Center and National Water Model information.

View the Enhanced Operating Capability Products and Services StoryMap here



Hydrograph River at a Glance Download
Gulkana River at Sourdough Stage (ft)Flow (kcfs)Highest Observation: 11.03 ft at 7:15AM May 24, 2023Observed: 11 ft at 7:30AM May 24, 2023Observed: 11.01 ft at 7:45AM May 24, 2023Highest Observation: 11.03 ft at 8:00AM May 24, 2023Observed: 11.01 ft at 8:15AM May 24, 2023Observed: 11 ft at 8:30AM May 24, 2023Observed: 11.01 ft at 8:45AM May 24, 2023Observed: 11 ft at 9:00AM May 24, 2023Observed: 11 ft at 9:15AM May 24, 2023Observed: 10.98 ft at 9:30AM May 24, 2023Observed: 11 ft at 9:45AM May 24, 2023Observed: 10.99 ft at 10:00AM May 24, 2023Observed: 10.99 ft at 10:15AM May 24, 2023Observed: 11 ft at 10:30AM May 24, 2023Observed: 10.99 ft at 10:45AM May 24, 2023Observed: 10.96 ft at 11:00AM May 24, 2023Observed: 10.96 ft at 11:15AM May 24, 2023Observed: 10.98 ft at 11:30AM May 24, 2023Observed: 10.97 ft at 11:45AM May 24, 2023Observed: 10.97 ft at 12:00PM May 24, 2023Observed: 10.98 ft at 12:15PM May 24, 2023Observed: 10.96 ft at 12:30PM May 24, 2023Observed: 10.96 ft at 12:45PM May 24, 2023Observed: 10.96 ft at 1:00PM May 24, 2023Observed: 10.95 ft at 1:15PM May 24, 2023Observed: 10.95 ft at 1:30PM May 24, 2023Observed: 10.95 ft at 1:45PM May 24, 2023Observed: 10.95 ft at 2:00PM May 24, 2023Observed: 10.95 ft at 2:15PM May 24, 2023Observed: 10.94 ft at 2:30PM May 24, 2023Observed: 10.94 ft at 2:45PM May 24, 2023Observed: 10.94 ft at 3:00PM May 24, 2023Observed: 10.93 ft at 3:15PM May 24, 2023Observed: 10.96 ft at 3:30PM May 24, 2023Observed: 10.93 ft at 3:45PM May 24, 2023Observed: 10.93 ft at 4:00PM May 24, 2023Observed: 10.94 ft at 4:15PM May 24, 2023Observed: 10.91 ft at 4:30PM May 24, 2023Observed: 10.93 ft at 4:45PM May 24, 2023Observed: 10.93 ft at 5:00PM May 24, 2023Observed: 10.9 ft at 5:15PM May 24, 2023Observed: 10.91 ft at 5:30PM May 24, 2023Observed: 10.92 ft at 5:45PM May 24, 2023Observed: 10.9 ft at 6:00PM May 24, 2023Observed: 10.9 ft at 6:15PM May 24, 2023Observed: 10.9 ft at 6:30PM May 24, 2023Observed: 10.91 ft at 6:45PM May 24, 2023Observed: 10.93 ft at 7:00PM May 24, 2023Observed: 10.91 ft at 7:15PM May 24, 2023Observed: 10.89 ft at 7:30PM May 24, 2023Observed: 10.92 ft at 7:45PM May 24, 2023Observed: 10.89 ft at 8:00PM May 24, 2023Observed: 10.89 ft at 8:15PM May 24, 2023Observed: 10.89 ft at 8:30PM May 24, 2023Observed: 10.89 ft at 8:45PM May 24, 2023Observed: 10.89 ft at 9:00PM May 24, 2023Observed: 10.91 ft at 9:15PM May 24, 2023Observed: 10.91 ft at 9:30PM May 24, 2023Observed: 10.88 ft at 9:45PM May 24, 2023Observed: 10.88 ft at 10:00PM May 24, 2023Observed: 10.89 ft at 10:15PM May 24, 2023Observed: 10.88 ft at 10:30PM May 24, 2023Observed: 10.89 ft at 10:45PM May 24, 2023Observed: 10.88 ft at 11:00PM May 24, 2023Observed: 10.88 ft at 11:15PM May 24, 2023Observed: 10.89 ft at 11:30PM May 24, 2023Observed: 10.86 ft at 11:45PM May 24, 2023Observed: 10.88 ft at 12:00AM May 25, 2023Observed: 10.88 ft at 12:15AM May 25, 2023Observed: 10.87 ft at 12:30AM May 25, 2023Observed: 10.87 ft at 12:45AM May 25, 2023Observed: 10.88 ft at 1:00AM May 25, 2023Observed: 10.88 ft at 1:15AM May 25, 2023Observed: 10.89 ft at 1:30AM May 25, 2023Observed: 10.89 ft at 1:45AM May 25, 2023Observed: 10.86 ft at 2:00AM May 25, 2023Observed: 10.88 ft at 2:15AM May 25, 2023Observed: 10.87 ft at 2:30AM May 25, 2023Observed: 10.88 ft at 2:45AM May 25, 2023Observed: 10.87 ft at 3:00AM May 25, 2023Observed: 10.88 ft at 3:15AM May 25, 2023Observed: 10.89 ft at 3:30AM May 25, 2023Observed: 10.88 ft at 3:45AM May 25, 2023Observed: 10.87 ft at 4:00AM May 25, 2023Observed: 10.88 ft at 4:15AM May 25, 2023Observed: 10.88 ft at 4:30AM May 25, 2023Observed: 10.87 ft at 4:45AM May 25, 2023Observed: 10.88 ft at 5:00AM May 25, 2023Observed: 10.89 ft at 5:15AM May 25, 2023Observed: 10.88 ft at 5:30AM May 25, 2023Observed: 10.88 ft at 5:45AM May 25, 2023Observed: 10.88 ft at 6:00AM May 25, 2023Observed: 10.87 ft at 6:15AM May 25, 2023Observed: 10.89 ft at 6:30AM May 25, 2023Observed: 10.88 ft at 6:45AM May 25, 2023Observed: 10.88 ft at 7:00AM May 25, 2023Observed: 10.88 ft at 7:15AM May 25, 2023Observed: 10.88 ft at 7:30AM May 25, 2023Observed: 10.86 ft at 7:45AM May 25, 2023Observed: 10.87 ft at 8:00AM May 25, 2023Observed: 10.87 ft at 8:15AM May 25, 2023Observed: 10.87 ft at 8:30AM May 25, 2023Observed: 10.87 ft at 8:45AM May 25, 2023Observed: 10.87 ft at 9:00AM May 25, 2023Observed: 10.88 ft at 9:15AM May 25, 2023Observed: 10.86 ft at 9:30AM May 25, 2023Observed: 10.89 ft at 9:45AM May 25, 2023Observed: 10.88 ft at 10:00AM May 25, 2023Observed: 10.88 ft at 10:15AM May 25, 2023Observed: 10.87 ft at 10:30AM May 25, 2023Observed: 10.85 ft at 10:45AM May 25, 2023Observed: 10.87 ft at 11:00AM May 25, 2023Observed: 10.88 ft at 11:15AM May 25, 2023Observed: 10.87 ft at 11:30AM May 25, 2023Observed: 10.85 ft at 11:45AM May 25, 2023Observed: 10.84 ft at 12:00PM May 25, 2023Observed: 10.86 ft at 12:15PM May 25, 2023Observed: 10.87 ft at 12:30PM May 25, 2023Observed: 10.84 ft at 12:45PM May 25, 2023Observed: 10.84 ft at 1:00PM May 25, 2023Observed: 10.84 ft at 1:15PM May 25, 2023Observed: 10.85 ft at 1:30PM May 25, 2023Observed: 10.83 ft at 1:45PM May 25, 2023Observed: 10.83 ft at 2:00PM May 25, 2023Observed: 10.83 ft at 2:15PM May 25, 2023Observed: 10.82 ft at 2:30PM May 25, 2023Observed: 10.83 ft at 2:45PM May 25, 2023Observed: 10.83 ft at 3:00PM May 25, 2023Observed: 10.84 ft at 3:15PM May 25, 2023Observed: 10.83 ft at 3:30PM May 25, 2023Observed: 10.82 ft at 3:45PM May 25, 2023Observed: 10.84 ft at 4:00PM May 25, 2023Observed: 10.81 ft at 4:15PM May 25, 2023Observed: 10.81 ft at 4:30PM May 25, 2023Observed: 10.81 ft at 4:45PM May 25, 2023Observed: 10.8 ft at 5:00PM May 25, 2023Observed: 10.81 ft at 5:15PM May 25, 2023Observed: 10.81 ft at 5:30PM May 25, 2023Observed: 10.81 ft at 5:45PM May 25, 2023Observed: 10.79 ft at 6:00PM May 25, 2023Observed: 10.8 ft at 6:15PM May 25, 2023Observed: 10.8 ft at 6:30PM May 25, 2023Observed: 10.81 ft at 6:45PM May 25, 2023Observed: 10.82 ft at 7:00PM May 25, 2023Observed: 10.77 ft at 7:15PM May 25, 2023Observed: 10.8 ft at 7:30PM May 25, 2023Observed: 10.78 ft at 7:45PM May 25, 2023Observed: 10.76 ft at 8:00PM May 25, 2023Observed: 10.8 ft at 8:15PM May 25, 2023Observed: 10.78 ft at 8:30PM May 25, 2023Observed: 10.79 ft at 8:45PM May 25, 2023Observed: 10.8 ft at 9:00PM May 25, 2023Observed: 10.78 ft at 9:15PM May 25, 2023Observed: 10.78 ft at 9:30PM May 25, 2023Observed: 10.79 ft at 9:45PM May 25, 2023Observed: 10.79 ft at 10:00PM May 25, 2023Observed: 10.76 ft at 10:15PM May 25, 2023Observed: 10.78 ft at 10:30PM May 25, 2023Observed: 10.78 ft at 10:45PM May 25, 2023Observed: 10.77 ft at 11:00PM May 25, 2023Observed: 10.81 ft at 11:15PM May 25, 2023Observed: 10.76 ft at 11:30PM May 25, 2023Observed: 10.77 ft at 11:45PM May 25, 2023Observed: 10.76 ft at 12:00AM May 26, 2023Observed: 10.76 ft at 12:15AM May 26, 2023Observed: 10.77 ft at 12:30AM May 26, 2023Observed: 10.76 ft at 12:45AM May 26, 2023Observed: 10.74 ft at 1:00AM May 26, 2023Observed: 10.76 ft at 1:15AM May 26, 2023Observed: 10.78 ft at 1:30AM May 26, 2023Observed: 10.79 ft at 1:45AM May 26, 2023Observed: 10.75 ft at 2:00AM May 26, 2023Observed: 10.73 ft at 2:15AM May 26, 2023Observed: 10.74 ft at 2:30AM May 26, 2023Observed: 10.78 ft at 2:45AM May 26, 2023Observed: 10.76 ft at 3:00AM May 26, 2023Observed: 10.76 ft at 3:15AM May 26, 2023Observed: 10.71 ft at 3:30AM May 26, 2023Observed: 10.73 ft at 3:45AM May 26, 2023Observed: 10.75 ft at 4:00AM May 26, 2023Observed: 10.73 ft at 4:15AM May 26, 2023Observed: 10.73 ft at 4:30AM May 26, 2023Observed: 10.73 ft at 4:45AM May 26, 2023Observed: 10.72 ft at 5:00AM May 26, 2023Observed: 10.72 ft at 5:15AM May 26, 2023Observed: 10.75 ft at 5:30AM May 26, 2023Observed: 10.76 ft at 5:45AM May 26, 2023Observed: 10.73 ft at 6:00AM May 26, 2023Observed: 10.72 ft at 6:15AM May 26, 2023Observed: 10.72 ft at 6:30AM May 26, 2023Observed: 10.73 ft at 6:45AM May 26, 2023Observed: 10.76 ft at 7:00AM May 26, 2023Observed: 10.71 ft at 7:15AM May 26, 2023Observed: 10.75 ft at 7:30AM May 26, 2023Observed: 10.76 ft at 7:45AM May 26, 2023Observed: 10.7 ft at 8:00AM May 26, 2023Observed: 10.78 ft at 8:15AM May 26, 2023Observed: 10.69 ft at 8:30AM May 26, 2023Observed: 10.73 ft at 8:45AM May 26, 2023Observed: 10.76 ft at 9:00AM May 26, 2023Observed: 10.77 ft at 9:15AM May 26, 2023Observed: 10.77 ft at 9:30AM May 26, 2023Observed: 10.69 ft at 9:45AM May 26, 2023Observed: 10.72 ft at 10:00AM May 26, 2023Observed: 10.74 ft at 10:15AM May 26, 2023Observed: 10.69 ft at 10:30AM May 26, 2023Observed: 10.76 ft at 10:45AM May 26, 2023Observed: 10.71 ft at 11:00AM May 26, 2023Observed: 10.73 ft at 11:15AM May 26, 2023Observed: 10.75 ft at 11:30AM May 26, 2023Observed: 10.7 ft at 11:45AM May 26, 2023Observed: 10.76 ft at 12:00PM May 26, 2023Observed: 10.73 ft at 12:15PM May 26, 2023Observed: 10.72 ft at 12:30PM May 26, 2023Observed: 10.77 ft at 12:45PM May 26, 2023Observed: 10.68 ft at 1:00PM May 26, 2023Observed: 10.72 ft at 1:15PM May 26, 2023Observed: 10.75 ft at 1:30PM May 26, 2023Observed: 10.68 ft at 1:45PM May 26, 2023Observed: 10.72 ft at 2:00PM May 26, 2023Observed: 10.72 ft at 2:15PM May 26, 2023Observed: 10.7 ft at 2:30PM May 26, 2023Observed: 10.7 ft at 2:45PM May 26, 2023Observed: 10.68 ft at 3:00PM May 26, 2023Observed: 10.71 ft at 3:15PM May 26, 2023Observed: 10.74 ft at 3:30PM May 26, 2023Observed: 10.74 ft at 3:45PM May 26, 2023Observed: 10.7 ft at 4:00PM May 26, 2023Observed: 10.68 ft at 4:15PM May 26, 2023Observed: 10.71 ft at 4:30PM May 26, 2023Observed: 10.73 ft at 4:45PM May 26, 2023Observed: 10.72 ft at 5:00PM May 26, 2023Observed: 10.68 ft at 5:15PM May 26, 2023Observed: 10.71 ft at 5:30PM May 26, 2023Observed: 10.72 ft at 5:45PM May 26, 2023Observed: 10.73 ft at 6:00PM May 26, 2023Observed: 10.7 ft at 6:15PM May 26, 2023Observed: 10.72 ft at 6:30PM May 26, 2023Observed: 10.69 ft at 6:45PM May 26, 2023Observed: 10.66 ft at 7:00PM May 26, 2023Observed: 10.64 ft at 7:15PM May 26, 2023Observed: 10.64 ft at 7:30PM May 26, 2023Observed: 10.62 ft at 7:45PM May 26, 2023Observed: 10.63 ft at 8:00PM May 26, 2023Observed: 10.63 ft at 8:15PM May 26, 2023Observed: 10.62 ft at 8:30PM May 26, 2023Observed: 10.63 ft at 8:45PM May 26, 2023Observed: 10.66 ft at 9:00PM May 26, 2023Observed: 10.64 ft at 9:15PM May 26, 2023Observed: 10.63 ft at 9:30PM May 26, 2023Observed: 10.64 ft at 9:45PM May 26, 2023Observed: 10.7 ft at 10:00PM May 26, 2023Observed: 10.67 ft at 10:15PM May 26, 2023Observed: 10.61 ft at 10:30PM May 26, 2023Observed: 10.6 ft at 10:45PM May 26, 2023Observed: 10.61 ft at 11:00PM May 26, 2023Observed: 10.68 ft at 11:15PM May 26, 2023Observed: 10.68 ft at 11:30PM May 26, 2023Observed: 10.68 ft at 11:45PM May 26, 2023Observed: 10.59 ft at 12:00AM May 27, 2023Observed: 10.59 ft at 12:15AM May 27, 2023Observed: 10.62 ft at 12:30AM May 27, 2023Observed: 10.67 ft at 12:45AM May 27, 2023Observed: 10.61 ft at 1:00AM May 27, 2023Observed: 10.57 ft at 1:15AM May 27, 2023Observed: 10.66 ft at 1:30AM May 27, 2023Observed: 10.56 ft at 1:45AM May 27, 2023Observed: 10.6 ft at 2:00AM May 27, 2023Observed: 10.66 ft at 2:15AM May 27, 2023Observed: 10.6 ft at 2:30AM May 27, 2023Observed: 10.56 ft at 2:45AM May 27, 2023Observed: 10.66 ft at 3:00AM May 27, 2023Observed: 10.53 ft at 3:15AM May 27, 2023Observed: 10.64 ft at 3:30AM May 27, 2023Observed: 10.55 ft at 3:45AM May 27, 2023Observed: 10.57 ft at 4:00AM May 27, 2023Observed: 10.63 ft at 4:15AM May 27, 2023Observed: 10.52 ft at 4:30AM May 27, 2023Observed: 10.63 ft at 4:45AM May 27, 2023Observed: 10.5 ft at 5:00AM May 27, 2023Observed: 10.64 ft at 5:15AM May 27, 2023Observed: 10.52 ft at 5:30AM May 27, 2023Observed: 10.64 ft at 5:45AM May 27, 2023Observed: 10.54 ft at 6:00AM May 27, 2023Observed: 10.59 ft at 6:15AM May 27, 2023Observed: 10.52 ft at 6:30AM May 27, 2023Observed: 10.56 ft at 6:45AM May 27, 2023Observed: 10.55 ft at 7:00AM May 27, 2023Observed: 10.58 ft at 7:15AM May 27, 2023Observed: 10.52 ft at 7:30AM May 27, 2023Observed: 10.59 ft at 7:45AM May 27, 2023Observed: 10.51 ft at 8:00AM May 27, 2023Observed: 10.62 ft at 8:15AM May 27, 2023Observed: 10.5 ft at 8:30AM May 27, 2023Observed: 10.51 ft at 8:45AM May 27, 2023Observed: 10.6 ft at 9:00AM May 27, 2023Observed: 10.46 ft at 9:15AM May 27, 2023Observed: 10.59 ft at 9:30AM May 27, 2023Observed: 10.52 ft at 9:45AM May 27, 2023Observed: 10.46 ft at 10:00AM May 27, 2023Observed: 10.59 ft at 10:15AM May 27, 2023Observed: 10.54 ft at 10:30AM May 27, 2023Observed: 10.45 ft at 10:45AM May 27, 2023Observed: 10.56 ft at 11:00AM May 27, 2023Observed: 10.52 ft at 11:15AM May 27, 2023Observed: 10.44 ft at 11:30AM May 27, 2023Observed: 10.55 ft at 11:45AM May 27, 2023Observed: 10.52 ft at 12:00PM May 27, 2023Observed: 10.44 ft at 12:15PM May 27, 2023Observed: 10.5 ft at 12:30PM May 27, 2023Observed: 10.55 ft at 12:45PM May 27, 2023Observed: 10.5 ft at 1:00PM May 27, 2023Observed: 10.38 ft at 1:15PM May 27, 2023Observed: 10.53 ft at 1:30PM May 27, 2023Observed: 10.56 ft at 1:45PM May 27, 2023Observed: 10.5 ft at 2:00PM May 27, 2023Observed: 10.43 ft at 2:15PM May 27, 2023Observed: 10.39 ft at 2:30PM May 27, 2023Observed: 10.47 ft at 2:45PM May 27, 2023Observed: 10.52 ft at 3:00PM May 27, 2023Observed: 10.52 ft at 3:15PM May 27, 2023Observed: 10.48 ft at 3:30PM May 27, 2023Observed: 10.47 ft at 3:45PM May 27, 2023Observed: 10.42 ft at 4:00PM May 27, 2023Observed: 10.38 ft at 4:15PM May 27, 2023Observed: 10.38 ft at 4:30PM May 27, 2023Observed: 10.38 ft at 4:45PM May 27, 2023Observed: 10.37 ft at 5:00PM May 27, 2023Observed: 10.39 ft at 5:15PM May 27, 2023Observed: 10.36 ft at 5:30PM May 27, 2023Observed: 10.36 ft at 5:45PM May 27, 2023Observed: 10.34 ft at 6:00PM May 27, 2023Observed: 10.34 ft at 6:15PM May 27, 2023Observed: 10.33 ft at 6:30PM May 27, 2023Observed: 10.35 ft at 6:45PM May 27, 2023Observed: 10.35 ft at 7:00PM May 27, 2023Observed: 10.32 ft at 7:15PM May 27, 2023Observed: 10.34 ft at 7:30PM May 27, 2023Observed: 10.33 ft at 7:45PM May 27, 2023Observed: 10.36 ft at 8:00PM May 27, 2023Observed: 10.33 ft at 8:15PM May 27, 2023Observed: 10.31 ft at 8:30PM May 27, 2023Observed: 10.32 ft at 8:45PM May 27, 2023Observed: 10.31 ft at 9:00PM May 27, 2023Observed: 10.31 ft at 9:15PM May 27, 2023Observed: 10.33 ft at 9:30PM May 27, 2023Observed: 10.35 ft at 9:45PM May 27, 2023Observed: 10.43 ft at 10:00PM May 27, 2023Observed: 10.46 ft at 10:15PM May 27, 2023Observed: 10.46 ft at 10:30PM May 27, 2023Observed: 10.46 ft at 10:45PM May 27, 2023Observed: 10.41 ft at 11:00PM May 27, 2023Observed: 10.3 ft at 11:15PM May 27, 2023Observed: 10.28 ft at 11:30PM May 27, 2023Observed: 10.34 ft at 11:45PM May 27, 2023Observed: 10.39 ft at 12:00AM May 28, 2023Observed: 10.43 ft at 12:15AM May 28, 2023Observed: 10.44 ft at 12:30AM May 28, 2023Observed: 10.33 ft at 12:45AM May 28, 2023Observed: 10.27 ft at 1:00AM May 28, 2023Observed: 10.3 ft at 1:15AM May 28, 2023Observed: 10.38 ft at 1:30AM May 28, 2023Observed: 10.41 ft at 1:45AM May 28, 2023Observed: 10.31 ft at 2:00AM May 28, 2023Observed: 10.25 ft at 2:15AM May 28, 2023Observed: 10.31 ft at 2:30AM May 28, 2023Observed: 10.4 ft at 2:45AM May 28, 2023Observed: 10.32 ft at 3:00AM May 28, 2023Observed: 10.26 ft at 3:15AM May 28, 2023Observed: 10.32 ft at 3:30AM May 28, 2023Observed: 10.4 ft at 3:45AM May 28, 2023Observed: 10.26 ft at 4:00AM May 28, 2023Observed: 10.24 ft at 4:15AM May 28, 2023Observed: 10.39 ft at 4:30AM May 28, 2023Observed: 10.27 ft at 4:45AM May 28, 2023Observed: 10.24 ft at 5:00AM May 28, 2023Observed: 10.39 ft at 5:15AM May 28, 2023Observed: 10.22 ft at 5:30AM May 28, 2023Observed: 10.3 ft at 5:45AM May 28, 2023Observed: 10.34 ft at 6:00AM May 28, 2023Observed: 10.23 ft at 6:15AM May 28, 2023Observed: 10.33 ft at 6:30AM May 28, 2023Observed: 10.28 ft at 6:45AM May 28, 2023Observed: 10.22 ft at 7:00AM May 28, 2023Observed: 10.34 ft at 7:15AM May 28, 2023Observed: 10.16 ft at 7:30AM May 28, 2023Observed: 10.32 ft at 7:45AM May 28, 2023Observed: 10.25 ft at 8:00AM May 28, 2023Observed: 10.22 ft at 8:15AM May 28, 2023Observed: 10.31 ft at 8:30AM May 28, 2023Observed: 10.17 ft at 8:45AM May 28, 2023Observed: 10.33 ft at 9:00AM May 28, 2023Observed: 10.2 ft at 9:15AM May 28, 2023Observed: 10.3 ft at 9:30AM May 28, 2023Observed: 10.17 ft at 9:45AM May 28, 2023Observed: 10.29 ft at 10:00AM May 28, 2023Observed: 10.21 ft at 10:15AM May 28, 2023Observed: 10.3 ft at 10:30AM May 28, 2023Observed: 10.2 ft at 10:45AM May 28, 2023Observed: 10.2 ft at 11:00AM May 28, 2023Observed: 10.25 ft at 11:15AM May 28, 2023Observed: 10.1 ft at 11:30AM May 28, 2023Observed: 10.29 ft at 11:45AM May 28, 2023Observed: 10.23 ft at 12:00PM May 28, 2023Observed: 10.18 ft at 12:15PM May 28, 2023Observed: 10.23 ft at 12:30PM May 28, 2023Observed: 10.24 ft at 12:45PM May 28, 2023Observed: 10.19 ft at 1:00PM May 28, 2023Observed: 10.19 ft at 1:15PM May 28, 2023Observed: 10.15 ft at 1:30PM May 28, 2023Observed: 10.2 ft at 1:45PM May 28, 2023Observed: 10.16 ft at 2:00PM May 28, 2023Observed: 10.17 ft at 2:15PM May 28, 2023Observed: 10.29 ft at 2:30PM May 28, 2023Observed: 10.1 ft at 2:45PM May 28, 2023Observed: 10.2 ft at 3:00PM May 28, 2023Observed: 10.13 ft at 3:15PM May 28, 2023Observed: 10.19 ft at 3:30PM May 28, 2023Observed: 10.25 ft at 3:45PM May 28, 2023Observed: 10.18 ft at 4:00PM May 28, 2023Observed: 10.15 ft at 4:15PM May 28, 2023Observed: 10.21 ft at 4:30PM May 28, 2023Observed: 10.15 ft at 4:45PM May 28, 2023Observed: 10.19 ft at 5:00PM May 28, 2023Observed: 10.12 ft at 5:15PM May 28, 2023Observed: 10.18 ft at 5:30PM May 28, 2023Observed: 10.21 ft at 5:45PM May 28, 2023Observed: 10.16 ft at 6:00PM May 28, 2023Observed: 10.09 ft at 6:15PM May 28, 2023Observed: 10.17 ft at 6:30PM May 28, 2023Observed: 10.16 ft at 6:45PM May 28, 2023Observed: 10.13 ft at 7:00PM May 28, 2023Observed: 10.13 ft at 7:15PM May 28, 2023Observed: 10.13 ft at 7:30PM May 28, 2023Observed: 10.12 ft at 7:45PM May 28, 2023Observed: 10.16 ft at 8:00PM May 28, 2023Observed: 10.07 ft at 8:15PM May 28, 2023Observed: 10.12 ft at 8:30PM May 28, 2023Observed: 10.05 ft at 8:45PM May 28, 2023Observed: 10.17 ft at 9:00PM May 28, 2023Observed: 10.08 ft at 9:15PM May 28, 2023Observed: 10.05 ft at 9:30PM May 28, 2023Observed: 10.18 ft at 9:45PM May 28, 2023Observed: 10.07 ft at 10:00PM May 28, 2023Observed: 10.08 ft at 10:15PM May 28, 2023Observed: 10.12 ft at 10:30PM May 28, 2023Observed: 10.06 ft at 10:45PM May 28, 2023Observed: 10.04 ft at 11:00PM May 28, 2023Observed: 10.11 ft at 11:15PM May 28, 2023Observed: 10.13 ft at 11:30PM May 28, 2023Observed: 10.06 ft at 11:45PM May 28, 2023Observed: 10.12 ft at 12:00AM May 29, 2023Observed: 10.05 ft at 12:15AM May 29, 2023Observed: 10.04 ft at 12:30AM May 29, 2023Observed: 10.06 ft at 12:45AM May 29, 2023Observed: 10 ft at 1:00AM May 29, 2023Observed: 10.09 ft at 1:15AM May 29, 2023Observed: 10.01 ft at 1:30AM May 29, 2023Observed: 10.02 ft at 1:45AM May 29, 2023Observed: 9.98 ft at 2:00AM May 29, 2023Observed: 10.05 ft at 2:15AM May 29, 2023Observed: 10.04 ft at 2:30AM May 29, 2023Observed: 10.04 ft at 2:45AM May 29, 2023Observed: 10 ft at 3:00AM May 29, 2023Observed: 10.03 ft at 3:15AM May 29, 2023Observed: 10.02 ft at 3:30AM May 29, 2023Observed: 9.98 ft at 3:45AM May 29, 2023Observed: 10.05 ft at 4:00AM May 29, 2023Observed: 10.08 ft at 4:15AM May 29, 2023Observed: 9.93 ft at 4:30AM May 29, 2023Observed: 10.01 ft at 4:45AM May 29, 2023Observed: 9.98 ft at 5:00AM May 29, 2023Observed: 10.01 ft at 5:15AM May 29, 2023Observed: 9.98 ft at 5:30AM May 29, 2023Observed: 10.01 ft at 5:45AM May 29, 2023Observed: 10.01 ft at 6:00AM May 29, 2023Observed: 9.95 ft at 6:15AM May 29, 2023Observed: 9.92 ft at 6:30AM May 29, 2023Observed: 9.95 ft at 6:45AM May 29, 2023Observed: 9.99 ft at 7:00AM May 29, 2023Observed: 10 ft at 7:15AM May 29, 2023Observed: 9.92 ft at 7:30AM May 29, 2023Observed: 9.96 ft at 7:45AM May 29, 2023Observed: 9.9 ft at 8:00AM May 29, 2023Observed: 9.98 ft at 8:15AM May 29, 2023Observed: 9.93 ft at 8:30AM May 29, 2023Observed: 10.01 ft at 8:45AM May 29, 2023Observed: 9.99 ft at 9:00AM May 29, 2023Observed: 9.98 ft at 9:15AM May 29, 2023Observed: 9.96 ft at 9:30AM May 29, 2023Observed: 9.89 ft at 9:45AM May 29, 2023Observed: 9.98 ft at 10:00AM May 29, 2023Observed: 9.96 ft at 10:15AM May 29, 2023Observed: 9.88 ft at 10:30AM May 29, 2023Observed: 9.96 ft at 10:45AM May 29, 2023Observed: 9.9 ft at 11:00AM May 29, 2023Observed: 9.89 ft at 11:15AM May 29, 2023Observed: 9.92 ft at 11:30AM May 29, 2023Observed: 9.91 ft at 11:45AM May 29, 2023Observed: 9.92 ft at 12:00PM May 29, 2023Observed: 9.87 ft at 12:15PM May 29, 2023Observed: 9.87 ft at 12:30PM May 29, 2023Observed: 9.86 ft at 12:45PM May 29, 2023Observed: 9.84 ft at 1:00PM May 29, 2023Observed: 9.89 ft at 1:15PM May 29, 2023Observed: 9.92 ft at 1:30PM May 29, 2023Observed: 9.9 ft at 1:45PM May 29, 2023Observed: 9.95 ft at 2:00PM May 29, 2023Observed: 9.97 ft at 2:15PM May 29, 2023Observed: 9.92 ft at 2:30PM May 29, 2023Observed: 9.85 ft at 2:45PM May 29, 2023Observed: 9.85 ft at 3:00PM May 29, 2023Observed: 9.84 ft at 3:15PM May 29, 2023Observed: 9.92 ft at 3:30PM May 29, 2023Observed: 9.83 ft at 3:45PM May 29, 2023Observed: 9.85 ft at 4:00PM May 29, 2023Observed: 9.83 ft at 4:15PM May 29, 2023Observed: 9.85 ft at 4:30PM May 29, 2023Observed: 9.91 ft at 4:45PM May 29, 2023Observed: 9.9 ft at 5:00PM May 29, 2023Observed: 9.89 ft at 5:15PM May 29, 2023Observed: 9.89 ft at 5:30PM May 29, 2023Observed: 9.83 ft at 5:45PM May 29, 2023Observed: 9.84 ft at 6:00PM May 29, 2023Observed: 9.84 ft at 6:15PM May 29, 2023Observed: 9.8 ft at 6:30PM May 29, 2023Observed: 9.88 ft at 6:45PM May 29, 2023Observed: 9.83 ft at 7:00PM May 29, 2023Observed: 9.87 ft at 7:15PM May 29, 2023Observed: 9.75 ft at 7:30PM May 29, 2023Observed: 9.76 ft at 7:45PM May 29, 2023Observed: 9.8 ft at 8:00PM May 29, 2023Observed: 9.91 ft at 8:15PM May 29, 2023Observed: 9.89 ft at 8:30PM May 29, 2023Observed: 9.85 ft at 8:45PM May 29, 2023Observed: 9.75 ft at 9:00PM May 29, 2023Observed: 9.77 ft at 9:15PM May 29, 2023Observed: 9.79 ft at 9:30PM May 29, 2023Observed: 9.84 ft at 9:45PM May 29, 2023Observed: 9.85 ft at 10:00PM May 29, 2023Observed: 9.84 ft at 10:15PM May 29, 2023Observed: 9.86 ft at 10:30PM May 29, 2023Observed: 9.84 ft at 10:45PM May 29, 2023Observed: 9.82 ft at 11:00PM May 29, 2023Observed: 9.84 ft at 11:15PM May 29, 2023Observed: 9.77 ft at 11:30PM May 29, 2023Observed: 9.82 ft at 11:45PM May 29, 2023Observed: 9.81 ft at 12:00AM May 30, 2023Observed: 9.85 ft at 12:15AM May 30, 2023Observed: 9.77 ft at 12:30AM May 30, 2023Observed: 9.79 ft at 12:45AM May 30, 2023Observed: 9.76 ft at 1:00AM May 30, 2023Observed: 9.76 ft at 1:15AM May 30, 2023Observed: 9.75 ft at 1:30AM May 30, 2023Observed: 9.78 ft at 1:45AM May 30, 2023Observed: 9.8 ft at 2:00AM May 30, 2023Observed: 9.79 ft at 2:15AM May 30, 2023Observed: 9.81 ft at 2:30AM May 30, 2023Observed: 9.76 ft at 2:45AM May 30, 2023Observed: 9.82 ft at 3:00AM May 30, 2023Observed: 9.81 ft at 3:15AM May 30, 2023Observed: 9.78 ft at 3:30AM May 30, 2023Observed: 9.81 ft at 3:45AM May 30, 2023Observed: 9.74 ft at 4:00AM May 30, 2023Observed: 9.86 ft at 4:15AM May 30, 2023Observed: 9.85 ft at 4:30AM May 30, 2023Observed: 9.86 ft at 4:45AM May 30, 2023Observed: 9.78 ft at 5:00AM May 30, 2023Observed: 9.76 ft at 5:15AM May 30, 2023Observed: 9.8 ft at 5:30AM May 30, 2023Observed: 9.79 ft at 5:45AM May 30, 2023Observed: 9.82 ft at 6:00AM May 30, 2023Observed: 9.89 ft at 6:15AM May 30, 2023Observed: 9.86 ft at 6:30AM May 30, 2023Observed: 9.85 ft at 6:45AM May 30, 2023Observed: 9.82 ft at 7:00AM May 30, 2023Observed: 9.84 ft at 7:15AM May 30, 2023Observed: 9.84 ft at 7:30AM May 30, 2023Observed: 9.83 ft at 7:45AM May 30, 2023Observed: 9.85 ft at 8:00AM May 30, 2023Observed: 9.83 ft at 8:15AM May 30, 2023Observed: 9.8 ft at 8:30AM May 30, 2023Observed: 9.89 ft at 8:45AM May 30, 2023Observed: 9.91 ft at 9:00AM May 30, 2023Observed: 9.84 ft at 9:15AM May 30, 2023Observed: 9.85 ft at 9:30AM May 30, 2023Observed: 9.93 ft at 9:45AM May 30, 2023Observed: 9.88 ft at 10:00AM May 30, 2023Observed: 9.85 ft at 10:15AM May 30, 2023Observed: 9.87 ft at 10:30AM May 30, 2023Observed: 9.91 ft at 10:45AM May 30, 2023Observed: 9.9 ft at 11:00AM May 30, 2023Observed: 9.86 ft at 11:15AM May 30, 2023Observed: 9.89 ft at 11:30AM May 30, 2023Observed: 9.85 ft at 11:45AM May 30, 2023Observed: 9.96 ft at 12:00PM May 30, 2023Observed: 9.93 ft at 12:15PM May 30, 2023Observed: 9.94 ft at 12:30PM May 30, 2023Observed: 9.91 ft at 12:45PM May 30, 2023Observed: 9.96 ft at 1:00PM May 30, 2023Observed: 9.97 ft at 1:15PM May 30, 2023Observed: 9.89 ft at 1:30PM May 30, 2023Observed: 9.92 ft at 1:45PM May 30, 2023Observed: 9.87 ft at 2:00PM May 30, 2023Observed: 9.9 ft at 2:15PM May 30, 2023Observed: 9.9 ft at 2:30PM May 30, 2023Observed: 9.9 ft at 2:45PM May 30, 2023Observed: 9.93 ft at 3:00PM May 30, 2023Observed: 9.94 ft at 3:15PM May 30, 2023Observed: 9.93 ft at 3:30PM May 30, 2023Observed: 9.95 ft at 3:45PM May 30, 2023Observed: 9.97 ft at 4:00PM May 30, 2023Observed: 9.93 ft at 4:15PM May 30, 2023Observed: 9.96 ft at 4:30PM May 30, 2023Observed: 9.97 ft at 4:45PM May 30, 2023Observed: 9.97 ft at 5:00PM May 30, 2023Observed: 9.92 ft at 5:15PM May 30, 2023Observed: 10.01 ft at 5:30PM May 30, 2023Observed: 9.97 ft at 5:45PM May 30, 2023Observed: 10 ft at 6:00PM May 30, 2023Observed: 10.03 ft at 6:15PM May 30, 2023Observed: 10.02 ft at 6:30PM May 30, 2023Observed: 10.01 ft at 6:45PM May 30, 2023Observed: 10.03 ft at 7:00PM May 30, 2023Observed: 9.99 ft at 7:15PM May 30, 2023Observed: 10.07 ft at 7:30PM May 30, 2023Observed: 10.04 ft at 7:45PM May 30, 2023Observed: 9.99 ft at 8:00PM May 30, 2023Observed: 9.99 ft at 8:15PM May 30, 2023Observed: 10.04 ft at 8:30PM May 30, 2023Observed: 10.03 ft at 8:45PM May 30, 2023Observed: 10.09 ft at 9:00PM May 30, 2023Observed: 10.08 ft at 9:15PM May 30, 2023Observed: 10.03 ft at 9:30PM May 30, 2023Observed: 10.04 ft at 9:45PM May 30, 2023Observed: 10.08 ft at 10:00PM May 30, 2023Observed: 10.05 ft at 10:15PM May 30, 2023Observed: 9.99 ft at 10:30PM May 30, 2023Observed: 10.14 ft at 10:45PM May 30, 2023Observed: 10.08 ft at 11:00PM May 30, 2023Observed: 10.09 ft at 11:15PM May 30, 2023Observed: 10.1 ft at 11:30PM May 30, 2023Observed: 10.14 ft at 11:45PM May 30, 2023Observed: 10.09 ft at 12:00AM May 31, 2023Observed: 10.16 ft at 12:15AM May 31, 2023Observed: 10.06 ft at 12:30AM May 31, 2023Observed: 10.16 ft at 12:45AM May 31, 2023Observed: 10.2 ft at 1:00AM May 31, 2023Observed: 10.13 ft at 1:15AM May 31, 2023Observed: 10.21 ft at 1:30AM May 31, 2023Observed: 10.11 ft at 1:45AM May 31, 2023Observed: 10.24 ft at 2:00AM May 31, 2023Observed: 10.25 ft at 2:15AM May 31, 2023Observed: 10.16 ft at 2:30AM May 31, 2023Observed: 10.3 ft at 2:45AM May 31, 2023Observed: 10.16 ft at 3:00AM May 31, 2023Observed: 10.27 ft at 3:15AM May 31, 2023Observed: 10.19 ft at 3:30AM May 31, 2023Observed: 10.28 ft at 3:45AM May 31, 2023Observed: 10.24 ft at 4:00AM May 31, 2023Observed: 10.2 ft at 4:15AM May 31, 2023Observed: 10.37 ft at 4:30AM May 31, 2023Observed: 10.26 ft at 4:45AM May 31, 2023Observed: 10.23 ft at 5:00AM May 31, 2023Observed: 10.38 ft at 5:15AM May 31, 2023Observed: 10.38 ft at 5:30AM May 31, 2023Observed: 10.28 ft at 5:45AM May 31, 2023Observed: 10.24 ft at 6:00AM May 31, 2023Observed: 10.34 ft at 6:15AM May 31, 2023Forecast: 10.4 ft 10:00AM May 31, 2023Forecast: 10.6 ft 4:00PM May 31, 2023Forecast: 10.9 ft 10:00PM May 31, 2023Forecast: 11.1 ft 4:00AM Jun 01, 2023Forecast: 11.2 ft 10:00AM Jun 01, 2023Forecast: 11.3 ft 4:00PM Jun 01, 2023Highest Forecast: 11.4 ft 10:00PM Jun 01, 2023USGS--Water Resources of the United StatesGRSA2(plotting HGIRZ) Graph Created (7:02AM May 31, 2023)ObservedForecast (issued 10:53AM May 30)Latest observed value: 10.34 ft at 6:15 AM AKDT 31-May-2023. Flood Stage is 11 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (AKDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Flood stage levels are based on recurrence intervals and may not be representative of local impacts.

NOTE: Forecasts for the Gulkana River at Sourdough are issued routinely during the warm season, and as needed at other times of the year.

Return to Area Map
Upstream Gauge - at Paxson Lake Outlet Upstream Gauge Downstream Gauge Downstream Gauge - at Richardson Highway Bridge
Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 0
Flood Stage: 11
Action Stage: 9.5
Low Stage (in feet): -9999

Historic Crests
(1) 16.03 ft on 05/07/1976
(2) 14.64 ft on 05/05/2009
(3) 14.62 ft on 05/30/2013
(4) 12.00 ft on 10/10/2006
(5) 11.26 ft on 09/12/1990
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 10.09 ft on 06/24/2020
(2) 8.57 ft on 05/09/2019
(3) 10.75 ft on 06/13/2018
(4) 8.85 ft on 05/02/2017
(5) 8.52 ft on 07/26/2016
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
Zoom Level:8
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
12.5 Stage associated with flow (16900 cfs) having a recurrence interval of >50 years; major flooding would be expected on this and nearby streams
12 Stage associated with flow (15200 cfs) having a recurrence interval of 20-40 years; moderate flooding would be expected on this and nearby streams
11 Stage associated with a flow (11900 cfs) having a recurrence interval of ~10 years; minor flooding would be expected on this and nearby streams
9.5 Bankfull -- stage associated with flow (7400 cfs) having a recurrence interval of ~2 years
Photos
(1) Upstream at Sourdough Campground stage 10.07ft
(2) Downstream stage 10.07ft
About This Location Collapse

Latitude: 62.520833° N, Longitude: 145.530833° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 11 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 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other NULL NULL  

Current/Historical Observations:
Additional Information Collapse
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
Ask Questions/Webmaster
Page last modified: 2-Nov-2020 7:26 PM 		Disclaimer
Credits
Glossary 		Privacy Policy
About Us
Career Opportunities