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University of Alaska Southeast

The Southeast Alaska Hydrography Database (SEAK Hydro) is an effort to reconcile local hydrography-related datasets across natural resource management agencies within Southeast Alaska; and synchronize those geometries to the National Hydrography Dataset (NHD). This static copy of the database contains information on a variety data layers including Streams/Rivers; Fish Passage Barriers; Fish Observations; content from the AK Anadromous Waters Catalog; High and Low Tide Shorelines; Lakes; Dams; Stream Mouths; Survey Waypoints; and Glaciers.
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Data from high frequency sampling of multiple carbon forms were collected in a predominately rain-fed watershed in Southeast Alaska during the main run-off season (May-October 2021). The dataset includes dissolved organic carbon, particulate organic carbon, coarse particulate organic carbon, and invertebrate biomass carbon point samples and daily stream flow. The objective of this study was to collect data on carbon export and flow to model watershed export of carbon forms.
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The Influence of Stream Flow Patterns on Juvenile Salmon Growth in Southeast Alaska
In the Gulf of Alaska, streams will experience more dramatic low water events, interspersed with larger and potentially more frequent high flow events in the coming decades. Reduced stream flows are likely to occur due to diminished snowpack and seasonal droughts, while higher flow events are likely to occur with more frequent storms and rain-on-snow events. These changes are likely to influence the growth trajectories of juvenile salmon, such as coho salmon and chinook salmon, that live up to two years in freshwater before migrating to the ocean. Stream flows can influence juvenile salmon growth by modifying food availability, water clarity, temperature, and predation risk. This high-resolution study examines...
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