Project
Automated spillway surveillance for risk assessment at FishPass
Selective passage systems allow passage of desirable fish while blocking movement of undesirable fish. Replacement of fixed, riverine barriers with effective intelligent migratory barriers will increase connectivity of waterways and aid species specific fisheries management and restoration efforts. The overall effectiveness of a selective passage systems will depend on both the selection mechanism and channel as well other components at the selection site designed to prevent passage (e.g., low-head weir). A hazard analysis for unintended escapement and video surveillance for unintended passage provide a more complete characterization of selective passage systems. To these ends, the launch angle and speed of steelhead (Oncorhynchus mykiss) present in the Laurentian Great Lakes were characterized through annotated images collected during spring 2022 and 2023 migratory runs. Analysis of 173 total leaps yielded a mean normalized launch speed of 8.6 body lengths per second and mean launch angles of 58.73 and 68.2 degrees in 2022 and 2023, respectively. To detect unintended passage over barriers, object detection methods based in machine learning were developed and evaluated. The developed models were trained to locate jumping fish and designed for incorporation with deployable network video recorders.
Project Datasets
Images of Leaping Steelhead for Launch Analysis
This dataset contains images related to 173 annotated steelhead leaps during migratory runs in the spring of 2022 and 2023. The images stem from a video camera positioned downstream and perpendicular to a weir on the Boardman (Ottaway) River, Traverse City, MI, USA. Through labeling of key markers contained in the images, the launch speed and launch angle of each jump is calculated.
Labeled Images of Emerged Salmonids in a Riverine Environment
The datasets contain over 2,300 annotated images of emerged salmonids collected in a natural riverine environment. The images stem from surveillance video collected during fall runs of steelhead (Oncorhynchus mykiss) on the Boardman (Ottaway) River in Traverse City, MI, USA. In addition to images of fully emerged salmonids, datasets are provided containing images of partially emerged salmonids, fully submerged fish, and other wildlife present in a riverine environment. The images are accompanied by annotations locating emerged fish.