Pacific Salmon eDNA Migration Tracking in Lake Washington Ship Canal, 2022

Washington state, USA, data from a prototype autonomous eDNA sampler deployed in the Lake Washington Ship Canal for 4 months during the 2022 adult salmon return. The sampler collected eDNA samples twice daily for Chinook, Sockeye, and Coho salmon, with results compared to daily visual counts at the Ballard Locks. The dataset was authored by Marshal S. Hoy and shared under a CC-BY-4.0 license.

Use Cases

• Comparing eDNA detection timelines with traditional visual fish counts based on the described 4-month deployment.
• Evaluating the performance of autonomous eDNA samplers for fine-scale migration tracking based on the twice-daily sampling protocol.
• Investigating environmental factors like thermal barriers on species-specific migration timing based on the reported detection lags.
• Assessing potential sample contamination in autonomous systems based on the described flush volume and carryover experiments.

Strengths

• Data collection spanned 4 months during a key biological event (the 2022 adult salmon return).
• Samples were collected at a high temporal resolution (twice daily, day and night).
• Results are directly compared to a ground-truth dataset (daily adult counts at the Ballard Locks).
• Includes experimental data on eDNA degradation and sample carryover from the described supplementary tests.

Limitations

• The dataset is small (527.0 KB), indicating limited scope or summary-level data.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for large-scale modeling.

Provenance

Source

figshare, authored by Marshal S. Hoy.

Collection Method

Data likely collected via a prototype autonomous eDNA sampler deployed in the Lake Washington Ship Canal.

Time Range

Covers a 4-month period during the 2022 adult salmon return.

Freshness

Last updated 2026-05-18 05:43:14; freshness should be verified.

Geography

Lake Washington Ship Canal, Washington state, USA, approximately 3 km upstream of the Ballard Locks.