For areas requiring a smaller footprint, the Whooshh Switchback Elver Trap™ is an autonomous system that is ideal for allowing a broad range of eels safe passage around river barriers.
Images are for illustration only, actual designs may vary based on individual customization.
The Whooshh Innovations EF-16 Climbing Substrate is a durable and modular substrate that is designed to attract and pass a broad cross-section of eels, from elver to yearlings, with a wide range of sizes.
Original tiles are used throughout the entire ramp except for the uppermost part of the ramp were the end tile is used together with a PVC half pipe (3-4´´ diameter) to create a curved descent to the collecting box (sold separately.)
The EF-16™ tiles comes with a standard width of 200 mm, a common ramp width of 400 mm needs four EF-16™ tiles per meter of ramp.
*Specialized tile sizes can be produced
Typical rivet placement, maximum rivet/screw head size: 6.5 mm, five rivets/screws per tile
Predation Screens: Upper portion shielded
by perforated aluminum sheet; lower
portion has stainless steel netting (20 x 20
Retrieval and Transport: Adaptable to
retrieval of caught elver in collection box or
the optional Elver Chamber™ which is
capable of pumping collected elver over a
barrier or to a more convenient retrieval site