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Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of Spring 2024. Existing AHPS content and features will be preserved and expanded within NWPS. The NWS is now accepting feedback on NWPS. Please visit https://www.weather.gov/owp/operations for more information.

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DID YOU KNOW... Please try our new TEST hydrograph page link at: https://preview.water.noaa.gov/gauges/abcde - Just replace “abcde” with your local hydrograph five character ID found in the lower left corner of the hydrograph.  In late March of 2024, the base URL path will become water.noaa.gov.  Feedback can be provided HERE
Hydrograph River at a Glance Download
Gulkana River at Sourdough Stage (ft)Flow (kcfs)Highest Observation: 54.21 ft at 11:30PM Nov 27, 2023Observed: 54.2 ft at 11:45PM Nov 27, 2023Observed: 54.19 ft at 12:00AM Nov 28, 2023Observed: 54.18 ft at 12:15AM Nov 28, 2023Observed: 54.18 ft at 12:30AM Nov 28, 2023Observed: 54.17 ft at 12:45AM Nov 28, 2023Observed: 54.17 ft at 1:00AM Nov 28, 2023Observed: 54.16 ft at 1:15AM Nov 28, 2023Observed: 54.15 ft at 1:30AM Nov 28, 2023Observed: 54.15 ft at 1:45AM Nov 28, 2023Observed: 54.14 ft at 2:00AM Nov 28, 2023Observed: 54.14 ft at 2:15AM Nov 28, 2023Observed: 54.13 ft at 2:30AM Nov 28, 2023Observed: 54.12 ft at 2:45AM Nov 28, 2023Observed: 54.12 ft at 3:00AM Nov 28, 2023Observed: 54.12 ft at 3:15AM Nov 28, 2023Observed: 54.11 ft at 3:30AM Nov 28, 2023Observed: 54.11 ft at 3:45AM Nov 28, 2023Observed: 54.1 ft at 4:00AM Nov 28, 2023Observed: 54.09 ft at 4:15AM Nov 28, 2023Observed: 54.09 ft at 4:30AM Nov 28, 2023Observed: 54.08 ft at 4:45AM Nov 28, 2023Observed: 54.08 ft at 5:00AM Nov 28, 2023Observed: 54.07 ft at 5:15AM Nov 28, 2023Observed: 54.07 ft at 5:30AM Nov 28, 2023Observed: 54.06 ft at 5:45AM Nov 28, 2023Observed: 54.06 ft at 6:00AM Nov 28, 2023Observed: 54.05 ft at 6:15AM Nov 28, 2023Observed: 54.05 ft at 6:30AM Nov 28, 2023Observed: 54.04 ft at 6:45AM Nov 28, 2023Observed: 54.04 ft at 7:00AM Nov 28, 2023Observed: 54.04 ft at 7:15AM Nov 28, 2023Observed: 54.04 ft at 7:30AM Nov 28, 2023Observed: 54.04 ft at 7:45AM Nov 28, 2023Observed: 54.04 ft at 8:00AM Nov 28, 2023Observed: 54.03 ft at 8:15AM Nov 28, 2023Observed: 54.04 ft at 8:30AM Nov 28, 2023Observed: 54.03 ft at 8:45AM Nov 28, 2023Observed: 54.03 ft at 9:00AM Nov 28, 2023Observed: 54.02 ft at 9:15AM Nov 28, 2023Observed: 54.01 ft at 9:30AM Nov 28, 2023Observed: 54.01 ft at 9:45AM Nov 28, 2023Observed: 54.01 ft at 10:00AM Nov 28, 2023Observed: 54.01 ft at 10:15AM Nov 28, 2023Observed: 54 ft at 10:30AM Nov 28, 2023Observed: 54 ft at 10:45AM Nov 28, 2023Observed: 54 ft at 11:00AM Nov 28, 2023Observed: 54 ft at 11:15AM Nov 28, 2023Observed: 53.99 ft at 11:30AM Nov 28, 2023Observed: 54 ft at 11:45AM Nov 28, 2023Observed: 54 ft at 12:00PM Nov 28, 2023Observed: 54 ft at 12:15PM Nov 28, 2023Observed: 54.01 ft at 12:30PM Nov 28, 2023Observed: 54.01 ft at 12:45PM Nov 28, 2023Observed: 54.01 ft at 1:00PM Nov 28, 2023Observed: 54.02 ft at 1:15PM Nov 28, 2023Observed: 54.02 ft at 1:30PM Nov 28, 2023Observed: 54.03 ft at 1:45PM Nov 28, 2023Observed: 54.03 ft at 2:00PM Nov 28, 2023Observed: 54.03 ft at 2:15PM Nov 28, 2023Observed: 54.04 ft at 2:30PM Nov 28, 2023Observed: 54.04 ft at 2:45PM Nov 28, 2023Observed: 54.04 ft at 3:00PM Nov 28, 2023Observed: 54.04 ft at 3:15PM Nov 28, 2023Observed: 54.05 ft at 3:30PM Nov 28, 2023Observed: 54.05 ft at 3:45PM Nov 28, 2023Observed: 54.05 ft at 4:00PM Nov 28, 2023Observed: 54.05 ft at 4:15PM Nov 28, 2023Observed: 54.06 ft at 4:30PM Nov 28, 2023Observed: 54.05 ft at 4:45PM Nov 28, 2023Observed: 54.05 ft at 5:00PM Nov 28, 2023Observed: 54.05 ft at 5:15PM Nov 28, 2023Observed: 54.05 ft at 5:30PM Nov 28, 2023Observed: 54.05 ft at 5:45PM Nov 28, 2023Observed: 54.04 ft at 6:00PM Nov 28, 2023Observed: 54.04 ft at 6:15PM Nov 28, 2023Observed: 54.03 ft at 6:30PM Nov 28, 2023Observed: 54.03 ft at 6:45PM Nov 28, 2023Observed: 54.03 ft at 7:00PM Nov 28, 2023Observed: 54.03 ft at 7:15PM Nov 28, 2023Observed: 54.02 ft at 7:30PM Nov 28, 2023Observed: 54.02 ft at 7:45PM Nov 28, 2023Observed: 54.01 ft at 8:00PM Nov 28, 2023Observed: 54.01 ft at 8:15PM Nov 28, 2023Observed: 54 ft at 8:30PM Nov 28, 2023Observed: 54 ft at 8:45PM Nov 28, 2023Observed: 54 ft at 9:00PM Nov 28, 2023Observed: 53.99 ft at 9:15PM Nov 28, 2023Observed: 53.99 ft at 9:30PM Nov 28, 2023Observed: 53.99 ft at 9:45PM Nov 28, 2023Observed: 53.98 ft at 10:00PM Nov 28, 2023Observed: 53.98 ft at 10:15PM Nov 28, 2023Observed: 53.97 ft at 10:30PM Nov 28, 2023Observed: 53.97 ft at 10:45PM Nov 28, 2023Observed: 53.97 ft at 11:00PM Nov 28, 2023Observed: 53.96 ft at 11:15PM Nov 28, 2023Observed: 53.96 ft at 11:30PM Nov 28, 2023Observed: 53.96 ft at 11:45PM Nov 28, 2023Observed: 53.96 ft at 12:00AM Nov 29, 2023Observed: 53.95 ft at 12:15AM Nov 29, 2023Observed: 53.95 ft at 12:30AM Nov 29, 2023Observed: 53.95 ft at 12:45AM Nov 29, 2023Observed: 53.94 ft at 1:00AM Nov 29, 2023Observed: 53.94 ft at 1:15AM Nov 29, 2023Observed: 53.94 ft at 1:30AM Nov 29, 2023Observed: 53.93 ft at 1:45AM Nov 29, 2023Observed: 53.93 ft at 2:00AM Nov 29, 2023Observed: 53.93 ft at 2:15AM Nov 29, 2023Observed: 53.93 ft at 2:30AM Nov 29, 2023Observed: 53.93 ft at 2:45AM Nov 29, 2023Observed: 53.92 ft at 3:00AM Nov 29, 2023Observed: 53.91 ft at 3:15AM Nov 29, 2023Observed: 53.91 ft at 3:30AM Nov 29, 2023Observed: 53.91 ft at 3:45AM Nov 29, 2023Observed: 53.91 ft at 4:00AM Nov 29, 2023Observed: 53.91 ft at 4:15AM Nov 29, 2023Observed: 53.9 ft at 4:30AM Nov 29, 2023Observed: 53.9 ft at 4:45AM Nov 29, 2023Observed: 53.9 ft at 5:00AM Nov 29, 2023Observed: 53.9 ft at 5:15AM Nov 29, 2023Observed: 53.89 ft at 5:30AM Nov 29, 2023Observed: 53.89 ft at 5:45AM Nov 29, 2023Observed: 53.88 ft at 6:00AM Nov 29, 2023Observed: 53.88 ft at 6:15AM Nov 29, 2023Observed: 53.88 ft at 6:30AM Nov 29, 2023Observed: 53.88 ft at 6:45AM Nov 29, 2023Observed: 53.87 ft at 7:00AM Nov 29, 2023Observed: 53.87 ft at 7:15AM Nov 29, 2023Observed: 53.86 ft at 7:30AM Nov 29, 2023Observed: 53.86 ft at 7:45AM Nov 29, 2023Observed: 53.86 ft at 8:00AM Nov 29, 2023Observed: 53.86 ft at 8:15AM Nov 29, 2023Observed: 53.86 ft at 8:30AM Nov 29, 2023Observed: 53.86 ft at 8:45AM Nov 29, 2023Observed: 53.86 ft at 9:00AM Nov 29, 2023Observed: 53.85 ft at 9:15AM Nov 29, 2023Observed: 53.85 ft at 9:30AM Nov 29, 2023Observed: 53.84 ft at 9:45AM Nov 29, 2023Observed: 53.85 ft at 10:00AM Nov 29, 2023Observed: 53.84 ft at 10:15AM Nov 29, 2023Observed: 53.84 ft at 10:30AM Nov 29, 2023Observed: 53.83 ft at 10:45AM Nov 29, 2023Observed: 53.83 ft at 11:00AM Nov 29, 2023Observed: 53.83 ft at 11:15AM Nov 29, 2023Observed: 53.83 ft at 11:30AM Nov 29, 2023Observed: 53.82 ft at 11:45AM Nov 29, 2023Observed: 53.82 ft at 12:00PM Nov 29, 2023Observed: 53.81 ft at 12:15PM Nov 29, 2023Observed: 53.82 ft at 12:30PM Nov 29, 2023Observed: 53.81 ft at 12:45PM Nov 29, 2023Observed: 53.81 ft at 1:00PM Nov 29, 2023Observed: 53.81 ft at 1:15PM Nov 29, 2023Observed: 53.81 ft at 1:30PM Nov 29, 2023Observed: 53.81 ft at 1:45PM Nov 29, 2023Observed: 53.82 ft at 2:00PM Nov 29, 2023Observed: 53.81 ft at 2:15PM Nov 29, 2023Observed: 53.81 ft at 2:30PM Nov 29, 2023Observed: 53.81 ft at 2:45PM Nov 29, 2023Observed: 53.8 ft at 3:00PM Nov 29, 2023Observed: 53.8 ft at 3:15PM Nov 29, 2023Observed: 53.8 ft at 3:30PM Nov 29, 2023Observed: 53.8 ft at 3:45PM Nov 29, 2023Observed: 53.79 ft at 4:00PM Nov 29, 2023Observed: 53.79 ft at 4:15PM Nov 29, 2023Observed: 53.79 ft at 4:30PM Nov 29, 2023Observed: 53.79 ft at 4:45PM Nov 29, 2023Observed: 53.79 ft at 5:00PM Nov 29, 2023Observed: 53.79 ft at 5:15PM Nov 29, 2023Observed: 53.79 ft at 5:30PM Nov 29, 2023Observed: 53.79 ft at 5:45PM Nov 29, 2023Observed: 53.79 ft at 6:00PM Nov 29, 2023Observed: 53.79 ft at 6:15PM Nov 29, 2023Observed: 53.79 ft at 6:30PM Nov 29, 2023Observed: 53.79 ft at 6:45PM Nov 29, 2023Observed: 53.79 ft at 7:00PM Nov 29, 2023Observed: 53.79 ft at 7:15PM Nov 29, 2023Observed: 53.79 ft at 7:30PM Nov 29, 2023Observed: 53.79 ft at 7:45PM Nov 29, 2023Observed: 53.79 ft at 8:00PM Nov 29, 2023Observed: 53.79 ft at 8:15PM Nov 29, 2023Observed: 53.8 ft at 8:30PM Nov 29, 2023Observed: 53.8 ft at 8:45PM Nov 29, 2023Observed: 53.8 ft at 9:00PM Nov 29, 2023Observed: 53.8 ft at 9:15PM Nov 29, 2023Observed: 53.8 ft at 9:30PM Nov 29, 2023Observed: 53.8 ft at 9:45PM Nov 29, 2023Observed: 53.8 ft at 10:00PM Nov 29, 2023Observed: 53.8 ft at 10:15PM Nov 29, 2023Observed: 53.8 ft at 10:30PM Nov 29, 2023Observed: 53.8 ft at 10:45PM Nov 29, 2023Observed: 53.8 ft at 11:00PM Nov 29, 2023Observed: 53.79 ft at 11:15PM Nov 29, 2023Observed: 53.8 ft at 11:30PM Nov 29, 2023Observed: 53.8 ft at 11:45PM Nov 29, 2023Observed: 53.8 ft at 12:00AM Nov 30, 2023Observed: 53.8 ft at 12:15AM Nov 30, 2023Observed: 53.8 ft at 12:30AM Nov 30, 2023Observed: 53.8 ft at 12:45AM Nov 30, 2023Observed: 53.8 ft at 1:00AM Nov 30, 2023Observed: 53.8 ft at 1:15AM Nov 30, 2023Observed: 53.8 ft at 1:30AM Nov 30, 2023Observed: 53.8 ft at 1:45AM Nov 30, 2023Observed: 53.81 ft at 2:00AM Nov 30, 2023Observed: 53.81 ft at 2:15AM Nov 30, 2023Observed: 53.82 ft at 2:30AM Nov 30, 2023Observed: 53.82 ft at 2:45AM Nov 30, 2023Observed: 53.82 ft at 3:00AM Nov 30, 2023Observed: 53.82 ft at 3:15AM Nov 30, 2023Observed: 53.83 ft at 3:30AM Nov 30, 2023Observed: 53.84 ft at 3:45AM Nov 30, 2023Observed: 53.85 ft at 4:00AM Nov 30, 2023Observed: 53.86 ft at 4:15AM Nov 30, 2023Observed: 53.87 ft at 4:30AM Nov 30, 2023Observed: 53.88 ft at 4:45AM Nov 30, 2023Observed: 53.88 ft at 5:00AM Nov 30, 2023Observed: 53.88 ft at 5:15AM Nov 30, 2023Observed: 53.88 ft at 5:30AM Nov 30, 2023Observed: 53.88 ft at 5:45AM Nov 30, 2023Observed: 53.88 ft at 6:00AM Nov 30, 2023Observed: 53.88 ft at 6:15AM Nov 30, 2023Observed: 53.88 ft at 6:30AM Nov 30, 2023Observed: 53.88 ft at 6:45AM Nov 30, 2023Observed: 53.88 ft at 7:00AM Nov 30, 2023Observed: 53.88 ft at 7:15AM Nov 30, 2023Observed: 53.88 ft at 7:30AM Nov 30, 2023Observed: 53.88 ft at 7:45AM Nov 30, 2023Observed: 53.88 ft at 8:00AM Nov 30, 2023Observed: 53.88 ft at 8:15AM Nov 30, 2023Observed: 53.89 ft at 8:30AM Nov 30, 2023Observed: 53.89 ft at 8:45AM Nov 30, 2023Observed: 53.89 ft at 9:00AM Nov 30, 2023Observed: 53.89 ft at 9:15AM Nov 30, 2023Observed: 53.89 ft at 9:30AM Nov 30, 2023Observed: 53.89 ft at 9:45AM Nov 30, 2023Observed: 53.9 ft at 10:00AM Nov 30, 2023Observed: 53.9 ft at 10:15AM Nov 30, 2023Observed: 53.9 ft at 10:30AM Nov 30, 2023Observed: 53.91 ft at 10:45AM Nov 30, 2023Observed: 53.91 ft at 11:00AM Nov 30, 2023Observed: 53.92 ft at 11:15AM Nov 30, 2023Observed: 53.93 ft at 11:30AM Nov 30, 2023Observed: 53.93 ft at 11:45AM Nov 30, 2023Observed: 53.93 ft at 12:00PM Nov 30, 2023Observed: 53.93 ft at 12:15PM Nov 30, 2023Observed: 53.93 ft at 12:30PM Nov 30, 2023Observed: 53.94 ft at 12:45PM Nov 30, 2023Observed: 53.94 ft at 1:00PM Nov 30, 2023Observed: 53.94 ft at 1:15PM Nov 30, 2023Observed: 53.94 ft at 1:30PM Nov 30, 2023Observed: 53.94 ft at 1:45PM Nov 30, 2023Observed: 53.94 ft at 2:00PM Nov 30, 2023Observed: 53.94 ft at 2:15PM Nov 30, 2023Observed: 53.93 ft at 2:30PM Nov 30, 2023Observed: 53.94 ft at 2:45PM Nov 30, 2023Observed: 53.93 ft at 3:00PM Nov 30, 2023Observed: 53.93 ft at 3:15PM Nov 30, 2023Observed: 53.93 ft at 3:30PM Nov 30, 2023Observed: 53.92 ft at 3:45PM Nov 30, 2023Observed: 53.92 ft at 4:00PM Nov 30, 2023Observed: 53.92 ft at 4:15PM Nov 30, 2023Observed: 53.91 ft at 4:30PM Nov 30, 2023Observed: 53.91 ft at 4:45PM Nov 30, 2023Observed: 53.91 ft at 5:00PM Nov 30, 2023Observed: 53.9 ft at 5:15PM Nov 30, 2023Observed: 53.9 ft at 5:30PM Nov 30, 2023Observed: 53.9 ft at 5:45PM Nov 30, 2023Observed: 53.89 ft at 6:00PM Nov 30, 2023Observed: 53.89 ft at 6:15PM Nov 30, 2023Observed: 53.89 ft at 6:30PM Nov 30, 2023Observed: 53.89 ft at 6:45PM Nov 30, 2023Observed: 53.88 ft at 7:00PM Nov 30, 2023Observed: 53.88 ft at 7:15PM Nov 30, 2023Observed: 53.88 ft at 7:30PM Nov 30, 2023Observed: 53.87 ft at 7:45PM Nov 30, 2023Observed: 53.87 ft at 8:00PM Nov 30, 2023Observed: 53.87 ft at 8:15PM Nov 30, 2023Observed: 53.86 ft at 8:30PM Nov 30, 2023Observed: 53.86 ft at 8:45PM Nov 30, 2023Observed: 53.86 ft at 9:00PM Nov 30, 2023Observed: 53.85 ft at 9:15PM Nov 30, 2023Observed: 53.85 ft at 9:30PM Nov 30, 2023Observed: 53.85 ft at 9:45PM Nov 30, 2023Observed: 53.85 ft at 10:00PM Nov 30, 2023Observed: 53.84 ft at 10:15PM Nov 30, 2023Observed: 53.84 ft at 10:30PM Nov 30, 2023Observed: 53.84 ft at 10:45PM Nov 30, 2023Observed: 53.84 ft at 11:00PM Nov 30, 2023Observed: 53.84 ft at 11:15PM Nov 30, 2023Observed: 53.83 ft at 11:30PM Nov 30, 2023Observed: 53.83 ft at 11:45PM Nov 30, 2023Observed: 53.82 ft at 12:00AM Dec 01, 2023Observed: 53.82 ft at 12:15AM Dec 01, 2023Observed: 53.82 ft at 12:30AM Dec 01, 2023Observed: 53.82 ft at 12:45AM Dec 01, 2023Observed: 53.81 ft at 1:00AM Dec 01, 2023Observed: 53.81 ft at 1:15AM Dec 01, 2023Observed: 53.81 ft at 1:30AM Dec 01, 2023Observed: 53.81 ft at 1:45AM Dec 01, 2023Observed: 53.8 ft at 2:00AM Dec 01, 2023Observed: 53.8 ft at 2:15AM Dec 01, 2023Observed: 53.8 ft at 2:30AM Dec 01, 2023Observed: 53.8 ft at 2:45AM Dec 01, 2023Observed: 53.8 ft at 3:00AM Dec 01, 2023Observed: 53.79 ft at 3:15AM Dec 01, 2023Observed: 53.79 ft at 3:30AM Dec 01, 2023Observed: 53.79 ft at 3:45AM Dec 01, 2023Observed: 53.79 ft at 4:00AM Dec 01, 2023Observed: 53.79 ft at 4:15AM Dec 01, 2023Observed: 53.78 ft at 4:30AM Dec 01, 2023Observed: 53.78 ft at 4:45AM Dec 01, 2023Observed: 53.78 ft at 5:00AM Dec 01, 2023Observed: 53.78 ft at 5:15AM Dec 01, 2023Observed: 53.78 ft at 5:30AM Dec 01, 2023Observed: 53.77 ft at 5:45AM Dec 01, 2023Observed: 53.77 ft at 6:00AM Dec 01, 2023Observed: 53.77 ft at 6:15AM Dec 01, 2023Observed: 53.77 ft at 6:30AM Dec 01, 2023Observed: 53.77 ft at 6:45AM Dec 01, 2023Observed: 53.77 ft at 7:00AM Dec 01, 2023Observed: 53.76 ft at 7:15AM Dec 01, 2023Observed: 53.76 ft at 7:30AM Dec 01, 2023Observed: 53.76 ft at 7:45AM Dec 01, 2023Observed: 53.76 ft at 8:00AM Dec 01, 2023Observed: 53.76 ft at 8:15AM Dec 01, 2023Observed: 53.75 ft at 8:30AM Dec 01, 2023Observed: 53.75 ft at 8:45AM Dec 01, 2023Observed: 53.75 ft at 9:00AM Dec 01, 2023Observed: 53.75 ft at 9:15AM Dec 01, 2023Observed: 53.74 ft at 9:30AM Dec 01, 2023Observed: 53.74 ft at 9:45AM Dec 01, 2023Observed: 53.74 ft at 10:00AM Dec 01, 2023Observed: 53.74 ft at 10:15AM Dec 01, 2023Observed: 53.74 ft at 10:30AM Dec 01, 2023Observed: 53.74 ft at 10:45AM Dec 01, 2023Observed: 53.74 ft at 11:00AM Dec 01, 2023Observed: 53.73 ft at 11:15AM Dec 01, 2023Observed: 53.73 ft at 11:30AM Dec 01, 2023Observed: 53.73 ft at 11:45AM Dec 01, 2023Observed: 53.73 ft at 12:00PM Dec 01, 2023Observed: 53.73 ft at 12:15PM Dec 01, 2023Observed: 53.73 ft at 12:30PM Dec 01, 2023Observed: 53.72 ft at 12:45PM Dec 01, 2023Observed: 53.72 ft at 1:00PM Dec 01, 2023Observed: 53.72 ft at 1:15PM Dec 01, 2023Observed: 53.72 ft at 1:30PM Dec 01, 2023Observed: 53.71 ft at 1:45PM Dec 01, 2023Observed: 53.71 ft at 2:00PM Dec 01, 2023Observed: 53.71 ft at 2:15PM Dec 01, 2023Observed: 53.71 ft at 2:30PM Dec 01, 2023Observed: 53.71 ft at 2:45PM Dec 01, 2023Observed: 53.71 ft at 3:00PM Dec 01, 2023Observed: 53.71 ft at 3:15PM Dec 01, 2023Observed: 53.7 ft at 3:30PM Dec 01, 2023Observed: 53.7 ft at 3:45PM Dec 01, 2023Observed: 53.7 ft at 4:00PM Dec 01, 2023Observed: 53.7 ft at 4:15PM Dec 01, 2023Observed: 53.7 ft at 4:30PM Dec 01, 2023Observed: 53.69 ft at 4:45PM Dec 01, 2023Observed: 53.69 ft at 5:00PM Dec 01, 2023Observed: 53.69 ft at 5:15PM Dec 01, 2023Observed: 53.69 ft at 5:30PM Dec 01, 2023Observed: 53.69 ft at 5:45PM Dec 01, 2023Observed: 53.69 ft at 6:00PM Dec 01, 2023Observed: 53.68 ft at 6:15PM Dec 01, 2023Observed: 53.68 ft at 6:30PM Dec 01, 2023Observed: 53.68 ft at 6:45PM Dec 01, 2023Observed: 53.68 ft at 7:00PM Dec 01, 2023Observed: 53.68 ft at 7:15PM Dec 01, 2023Observed: 53.68 ft at 7:30PM Dec 01, 2023Observed: 53.68 ft at 7:45PM Dec 01, 2023Observed: 53.67 ft at 8:00PM Dec 01, 2023Observed: 53.67 ft at 8:15PM Dec 01, 2023Observed: 53.67 ft at 8:30PM Dec 01, 2023Observed: 53.67 ft at 8:45PM Dec 01, 2023Observed: 53.67 ft at 9:00PM Dec 01, 2023Observed: 53.67 ft at 9:15PM Dec 01, 2023Observed: 53.66 ft at 9:30PM Dec 01, 2023Observed: 53.66 ft at 9:45PM Dec 01, 2023Observed: 53.66 ft at 10:00PM Dec 01, 2023Observed: 53.66 ft at 10:15PM Dec 01, 2023Observed: 53.66 ft at 10:30PM Dec 01, 2023Observed: 53.66 ft at 10:45PM Dec 01, 2023Observed: 53.65 ft at 11:00PM Dec 01, 2023Observed: 53.65 ft at 11:15PM Dec 01, 2023Observed: 53.65 ft at 11:30PM Dec 01, 2023Observed: 53.65 ft at 11:45PM Dec 01, 2023Observed: 53.65 ft at 12:00AM Dec 02, 2023Observed: 53.65 ft at 12:15AM Dec 02, 2023Observed: 53.65 ft at 12:30AM Dec 02, 2023Observed: 53.64 ft at 12:45AM Dec 02, 2023Observed: 53.65 ft at 1:00AM Dec 02, 2023Observed: 53.64 ft at 1:15AM Dec 02, 2023Observed: 53.64 ft at 1:30AM Dec 02, 2023Observed: 53.64 ft at 1:45AM Dec 02, 2023Observed: 53.64 ft at 2:00AM Dec 02, 2023Observed: 53.64 ft at 2:15AM Dec 02, 2023Observed: 53.63 ft at 2:30AM Dec 02, 2023Observed: 53.63 ft at 2:45AM Dec 02, 2023Observed: 53.63 ft at 3:00AM Dec 02, 2023Observed: 53.63 ft at 3:15AM Dec 02, 2023Observed: 53.63 ft at 3:30AM Dec 02, 2023Observed: 53.63 ft at 3:45AM Dec 02, 2023Observed: 53.62 ft at 4:00AM Dec 02, 2023Observed: 53.62 ft at 4:15AM Dec 02, 2023Observed: 53.62 ft at 4:30AM Dec 02, 2023Observed: 53.62 ft at 4:45AM Dec 02, 2023Observed: 53.62 ft at 5:00AM Dec 02, 2023Observed: 53.62 ft at 5:15AM Dec 02, 2023Observed: 53.62 ft at 5:30AM Dec 02, 2023Observed: 53.61 ft at 5:45AM Dec 02, 2023Observed: 53.61 ft at 6:00AM Dec 02, 2023Observed: 53.61 ft at 6:15AM Dec 02, 2023Observed: 53.61 ft at 6:30AM Dec 02, 2023Observed: 53.61 ft at 6:45AM Dec 02, 2023Observed: 53.61 ft at 7:00AM Dec 02, 2023Observed: 53.61 ft at 7:15AM Dec 02, 2023Observed: 53.6 ft at 7:30AM Dec 02, 2023Observed: 53.6 ft at 7:45AM Dec 02, 2023Observed: 53.6 ft at 8:00AM Dec 02, 2023Observed: 53.6 ft at 8:15AM Dec 02, 2023Observed: 53.6 ft at 8:30AM Dec 02, 2023Observed: 53.6 ft at 8:45AM Dec 02, 2023Observed: 53.6 ft at 9:00AM Dec 02, 2023Observed: 53.6 ft at 9:15AM Dec 02, 2023Observed: 53.59 ft at 9:30AM Dec 02, 2023Observed: 53.59 ft at 9:45AM Dec 02, 2023Observed: 53.59 ft at 10:00AM Dec 02, 2023Observed: 53.59 ft at 10:15AM Dec 02, 2023Observed: 53.59 ft at 10:30AM Dec 02, 2023Observed: 53.59 ft at 10:45AM Dec 02, 2023Observed: 53.59 ft at 11:00AM Dec 02, 2023Observed: 53.59 ft at 11:15AM Dec 02, 2023Observed: 53.59 ft at 11:30AM Dec 02, 2023Observed: 53.59 ft at 11:45AM Dec 02, 2023Observed: 53.59 ft at 12:00PM Dec 02, 2023Observed: 53.59 ft at 12:15PM Dec 02, 2023Observed: 53.59 ft at 12:30PM Dec 02, 2023Observed: 53.58 ft at 12:45PM Dec 02, 2023Observed: 53.58 ft at 1:00PM Dec 02, 2023Observed: 53.58 ft at 1:15PM Dec 02, 2023Observed: 53.58 ft at 1:30PM Dec 02, 2023Observed: 53.58 ft at 1:45PM Dec 02, 2023Observed: 53.58 ft at 2:00PM Dec 02, 2023Observed: 53.58 ft at 2:15PM Dec 02, 2023Observed: 53.58 ft at 2:30PM Dec 02, 2023Observed: 53.58 ft at 2:45PM Dec 02, 2023Observed: 53.58 ft at 3:00PM Dec 02, 2023Observed: 53.58 ft at 3:15PM Dec 02, 2023Observed: 53.58 ft at 3:30PM Dec 02, 2023Observed: 53.58 ft at 3:45PM Dec 02, 2023Observed: 53.58 ft at 4:00PM Dec 02, 2023Observed: 53.58 ft at 4:15PM Dec 02, 2023Observed: 53.58 ft at 4:30PM Dec 02, 2023Observed: 53.58 ft at 4:45PM Dec 02, 2023Observed: 53.58 ft at 5:00PM Dec 02, 2023Observed: 53.58 ft at 5:15PM Dec 02, 2023Observed: 53.58 ft at 5:30PM Dec 02, 2023Observed: 53.57 ft at 5:45PM Dec 02, 2023Observed: 53.57 ft at 6:00PM Dec 02, 2023Observed: 53.57 ft at 6:15PM Dec 02, 2023Observed: 53.57 ft at 6:30PM Dec 02, 2023Observed: 53.57 ft at 6:45PM Dec 02, 2023Observed: 53.57 ft at 7:00PM Dec 02, 2023Observed: 53.56 ft at 7:15PM Dec 02, 2023Observed: 53.56 ft at 7:30PM Dec 02, 2023Observed: 53.56 ft at 7:45PM Dec 02, 2023Observed: 53.56 ft at 8:00PM Dec 02, 2023Observed: 53.56 ft at 8:15PM Dec 02, 2023Observed: 53.56 ft at 8:30PM Dec 02, 2023Observed: 53.56 ft at 8:45PM Dec 02, 2023Observed: 53.56 ft at 9:00PM Dec 02, 2023Observed: 53.56 ft at 9:15PM Dec 02, 2023Observed: 53.56 ft at 9:30PM Dec 02, 2023Observed: 53.56 ft at 9:45PM Dec 02, 2023Observed: 53.55 ft at 10:00PM Dec 02, 2023Observed: 53.55 ft at 10:15PM Dec 02, 2023Observed: 53.55 ft at 10:30PM Dec 02, 2023Observed: 53.55 ft at 10:45PM Dec 02, 2023Observed: 53.55 ft at 11:00PM Dec 02, 2023Observed: 53.55 ft at 11:15PM Dec 02, 2023Observed: 53.55 ft at 11:30PM Dec 02, 2023Observed: 53.55 ft at 11:45PM Dec 02, 2023Observed: 53.55 ft at 12:00AM Dec 03, 2023Observed: 53.54 ft at 12:15AM Dec 03, 2023Observed: 53.54 ft at 12:30AM Dec 03, 2023Observed: 53.54 ft at 12:45AM Dec 03, 2023Observed: 53.54 ft at 1:00AM Dec 03, 2023Observed: 53.54 ft at 1:15AM Dec 03, 2023Observed: 53.54 ft at 1:30AM Dec 03, 2023Observed: 53.54 ft at 1:45AM Dec 03, 2023Observed: 53.54 ft at 2:00AM Dec 03, 2023Observed: 53.54 ft at 2:15AM Dec 03, 2023Observed: 53.54 ft at 2:30AM Dec 03, 2023Observed: 53.54 ft at 2:45AM Dec 03, 2023Observed: 53.54 ft at 3:00AM Dec 03, 2023Observed: 53.54 ft at 3:15AM Dec 03, 2023Observed: 53.54 ft at 3:30AM Dec 03, 2023Observed: 53.54 ft at 3:45AM Dec 03, 2023Observed: 53.53 ft at 4:00AM Dec 03, 2023Observed: 53.53 ft at 4:15AM Dec 03, 2023Observed: 53.53 ft at 4:30AM Dec 03, 2023Observed: 53.53 ft at 4:45AM Dec 03, 2023Observed: 53.53 ft at 5:00AM Dec 03, 2023Observed: 53.53 ft at 5:15AM Dec 03, 2023Observed: 53.53 ft at 5:30AM Dec 03, 2023Observed: 53.53 ft at 5:45AM Dec 03, 2023Observed: 53.53 ft at 6:00AM Dec 03, 2023Observed: 53.53 ft at 6:15AM Dec 03, 2023Observed: 53.53 ft at 6:30AM Dec 03, 2023Observed: 53.52 ft at 6:45AM Dec 03, 2023Observed: 53.52 ft at 7:00AM Dec 03, 2023Observed: 53.52 ft at 7:15AM Dec 03, 2023Observed: 53.52 ft at 7:30AM Dec 03, 2023Observed: 53.52 ft at 7:45AM Dec 03, 2023Observed: 53.52 ft at 8:00AM Dec 03, 2023Observed: 53.52 ft at 8:15AM Dec 03, 2023Observed: 53.52 ft at 8:30AM Dec 03, 2023Observed: 53.52 ft at 8:45AM Dec 03, 2023Observed: 53.52 ft at 9:00AM Dec 03, 2023Observed: 53.52 ft at 9:15AM Dec 03, 2023Observed: 53.52 ft at 9:30AM Dec 03, 2023Observed: 53.52 ft at 9:45AM Dec 03, 2023Observed: 53.52 ft at 10:00AM Dec 03, 2023Observed: 53.52 ft at 10:15AM Dec 03, 2023Observed: 53.52 ft at 10:30AM Dec 03, 2023Observed: 53.52 ft at 10:45AM Dec 03, 2023Observed: 53.52 ft at 11:00AM Dec 03, 2023Observed: 53.52 ft at 11:15AM Dec 03, 2023Observed: 53.52 ft at 11:30AM Dec 03, 2023Observed: 53.52 ft at 11:45AM Dec 03, 2023Observed: 53.52 ft at 12:00PM Dec 03, 2023Observed: 53.52 ft at 12:15PM Dec 03, 2023Observed: 53.52 ft at 12:30PM Dec 03, 2023Observed: 53.52 ft at 12:45PM Dec 03, 2023Observed: 53.52 ft at 1:00PM Dec 03, 2023Observed: 53.52 ft at 1:15PM Dec 03, 2023Observed: 53.52 ft at 1:30PM Dec 03, 2023Observed: 53.51 ft at 1:45PM Dec 03, 2023Observed: 53.51 ft at 2:00PM Dec 03, 2023Observed: 53.51 ft at 2:15PM Dec 03, 2023Observed: 53.51 ft at 2:30PM Dec 03, 2023Observed: 53.51 ft at 2:45PM Dec 03, 2023Observed: 53.51 ft at 3:00PM Dec 03, 2023Observed: 53.51 ft at 3:15PM Dec 03, 2023Observed: 53.51 ft at 3:30PM Dec 03, 2023Observed: 53.51 ft at 3:45PM Dec 03, 2023Observed: 53.51 ft at 4:00PM Dec 03, 2023Observed: 53.5 ft at 4:15PM Dec 03, 2023Observed: 53.5 ft at 4:30PM Dec 03, 2023Observed: 53.5 ft at 4:45PM Dec 03, 2023Observed: 53.5 ft at 5:00PM Dec 03, 2023Observed: 53.5 ft at 5:15PM Dec 03, 2023Observed: 53.5 ft at 5:30PM Dec 03, 2023Observed: 53.5 ft at 5:45PM Dec 03, 2023Observed: 53.5 ft at 6:00PM Dec 03, 2023Observed: 53.5 ft at 6:15PM Dec 03, 2023Observed: 53.5 ft at 6:30PM Dec 03, 2023Observed: 53.5 ft at 6:45PM Dec 03, 2023Observed: 53.5 ft at 7:00PM Dec 03, 2023Observed: 53.5 ft at 7:15PM Dec 03, 2023Observed: 53.49 ft at 7:30PM Dec 03, 2023Observed: 53.49 ft at 7:45PM Dec 03, 2023Observed: 53.49 ft at 8:00PM Dec 03, 2023Observed: 53.49 ft at 8:15PM Dec 03, 2023Observed: 53.5 ft at 8:30PM Dec 03, 2023Observed: 53.49 ft at 8:45PM Dec 03, 2023Observed: 53.49 ft at 9:00PM Dec 03, 2023Observed: 53.49 ft at 9:15PM Dec 03, 2023Observed: 53.49 ft at 9:30PM Dec 03, 2023Observed: 53.49 ft at 9:45PM Dec 03, 2023Observed: 53.49 ft at 10:00PM Dec 03, 2023Observed: 53.49 ft at 10:15PM Dec 03, 2023Observed: 53.49 ft at 10:30PM Dec 03, 2023Observed: 53.49 ft at 10:45PM Dec 03, 2023Observed: 53.49 ft at 11:00PM Dec 03, 2023Observed: 53.49 ft at 11:15PM Dec 03, 2023Observed: 53.49 ft at 11:30PM Dec 03, 2023Observed: 53.49 ft at 11:45PM Dec 03, 2023Observed: 53.49 ft at 12:00AM Dec 04, 2023Observed: 53.48 ft at 12:15AM Dec 04, 2023Observed: 53.49 ft at 12:30AM Dec 04, 2023Observed: 53.48 ft at 12:45AM Dec 04, 2023Observed: 53.48 ft at 1:00AM Dec 04, 2023Observed: 53.48 ft at 1:15AM Dec 04, 2023Observed: 53.48 ft at 1:30AM Dec 04, 2023Observed: 53.48 ft at 1:45AM Dec 04, 2023Observed: 53.48 ft at 2:00AM Dec 04, 2023Observed: 53.48 ft at 2:15AM Dec 04, 2023Observed: 53.48 ft at 2:30AM Dec 04, 2023Observed: 53.48 ft at 2:45AM Dec 04, 2023Observed: 53.48 ft at 3:00AM Dec 04, 2023Observed: 53.48 ft at 3:15AM Dec 04, 2023Observed: 53.48 ft at 3:30AM Dec 04, 2023Observed: 53.48 ft at 3:45AM Dec 04, 2023Observed: 53.48 ft at 4:00AM Dec 04, 2023Observed: 53.48 ft at 4:15AM Dec 04, 2023Observed: 53.48 ft at 4:30AM Dec 04, 2023Observed: 53.47 ft at 4:45AM Dec 04, 2023Observed: 53.48 ft at 5:00AM Dec 04, 2023Observed: 53.47 ft at 5:15AM Dec 04, 2023Observed: 53.48 ft at 5:30AM Dec 04, 2023Observed: 53.47 ft at 5:45AM Dec 04, 2023Observed: 53.47 ft at 6:00AM Dec 04, 2023Observed: 53.47 ft at 6:15AM Dec 04, 2023Observed: 53.47 ft at 6:30AM Dec 04, 2023Observed: 53.47 ft at 6:45AM Dec 04, 2023Observed: 53.47 ft at 7:00AM Dec 04, 2023Observed: 53.47 ft at 7:15AM Dec 04, 2023Observed: 53.47 ft at 7:30AM Dec 04, 2023Observed: 53.47 ft at 7:45AM Dec 04, 2023Observed: 53.48 ft at 8:00AM Dec 04, 2023Observed: 53.48 ft at 8:15AM Dec 04, 2023Observed: 53.47 ft at 8:30AM Dec 04, 2023Observed: 53.47 ft at 8:45AM Dec 04, 2023Observed: 53.48 ft at 9:00AM Dec 04, 2023Observed: 53.47 ft at 9:15AM Dec 04, 2023Observed: 53.47 ft at 9:30AM Dec 04, 2023Observed: 53.47 ft at 9:45AM Dec 04, 2023Observed: 53.47 ft at 10:00AM Dec 04, 2023Observed: 53.47 ft at 10:15AM Dec 04, 2023Observed: 53.47 ft at 10:30AM Dec 04, 2023Observed: 53.47 ft at 10:45AM Dec 04, 2023Observed: 53.47 ft at 11:00AM Dec 04, 2023Observed: 53.47 ft at 11:15AM Dec 04, 2023Observed: 53.47 ft at 11:30AM Dec 04, 2023Observed: 53.47 ft at 11:45AM Dec 04, 2023Observed: 53.46 ft at 12:00PM Dec 04, 2023Observed: 53.47 ft at 12:15PM Dec 04, 2023Observed: 53.46 ft at 12:30PM Dec 04, 2023Observed: 53.46 ft at 12:45PM Dec 04, 2023Observed: 53.46 ft at 1:00PM Dec 04, 2023Observed: 53.46 ft at 1:15PM Dec 04, 2023Observed: 53.46 ft at 1:30PM Dec 04, 2023Observed: 53.47 ft at 1:45PM Dec 04, 2023Observed: 53.46 ft at 2:00PM Dec 04, 2023Observed: 53.46 ft at 2:15PM Dec 04, 2023Observed: 53.46 ft at 2:30PM Dec 04, 2023Observed: 53.46 ft at 2:45PM Dec 04, 2023Observed: 53.46 ft at 3:00PM Dec 04, 2023Observed: 53.46 ft at 3:15PM Dec 04, 2023Observed: 53.46 ft at 3:30PM Dec 04, 2023Observed: 53.46 ft at 3:45PM Dec 04, 2023Observed: 53.46 ft at 4:00PM Dec 04, 2023Observed: 53.46 ft at 4:15PM Dec 04, 2023Observed: 53.46 ft at 4:30PM Dec 04, 2023Observed: 53.46 ft at 4:45PM Dec 04, 2023Observed: 53.46 ft at 5:00PM Dec 04, 2023Observed: 53.46 ft at 5:15PM Dec 04, 2023Observed: 53.46 ft at 5:30PM Dec 04, 2023Observed: 53.46 ft at 5:45PM Dec 04, 2023Observed: 53.46 ft at 6:00PM Dec 04, 2023Observed: 53.46 ft at 6:15PM Dec 04, 2023Observed: 53.46 ft at 6:30PM Dec 04, 2023Observed: 53.46 ft at 6:45PM Dec 04, 2023Observed: 53.46 ft at 7:00PM Dec 04, 2023Observed: 53.46 ft at 7:15PM Dec 04, 2023Observed: 53.46 ft at 7:30PM Dec 04, 2023Observed: 53.46 ft at 7:45PM Dec 04, 2023Observed: 53.46 ft at 8:00PM Dec 04, 2023Observed: 53.46 ft at 8:15PM Dec 04, 2023Observed: 53.46 ft at 8:30PM Dec 04, 2023Observed: 53.47 ft at 8:45PM Dec 04, 2023Observed: 53.46 ft at 9:00PM Dec 04, 2023Observed: 53.47 ft at 9:15PM Dec 04, 2023Observed: 53.47 ft at 9:30PM Dec 04, 2023Observed: 53.47 ft at 9:45PM Dec 04, 2023Observed: 53.47 ft at 10:00PM Dec 04, 2023Observed: 53.46 ft at 10:15PM Dec 04, 2023Observed: 53.46 ft at 10:30PM Dec 04, 2023USGS--Water Resources of the United StatesGCOA2(plotting HGIRZ) Graph Created (11:17PM Dec 4, 2023)ObservedLatest observed value: 53.46 ft at 10:30 PM AKST 4-Dec-2023.
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: 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.

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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:
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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
Anchorage Weather Forecast Office
6930 Sand Lake Road
Anchorage, AK 99502
(907) 266-5160
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