Aquatic Life Passage – ISCO Industries

ISCO Aquatic Life Passage (ALP): a Fish-Friendly Approach.

Durable HDPE pipe liners with a special interior surface designed to manage flow and make aquatic organism passage easier.

Improving existing culverts for waterway crossings.

To successfully negotiate a culvert, fish on an upstream migration must enter the culvert barrel, traverse the barrel length, exit at the upstream end and proceed to a resting area. More and more, culverts are being accessed as a crossing by fish and other aquatic organisms, but currently, most culverts are not fully passable. As a result, many states are implementing recommendations and guidelines for improving the effectiveness and ecological impact of waterway crossings.

Pipe designed to address the issue.

Snap-Tite^® now offers ISCO ALP, an interior open-profiled high-density polyethylene (HDPE) pipe up to 120" in diameter, designed specifically to enhance aquatic life passage. ISCO ALP’s internal structure is comparable to corrugated metal pipe (CMP) but is much more durable and resistant to corrosion and abrasion. Fish and other aquatic organisms can migrate more easily through their physical environment thanks to interior profiles that act as “roughness elements” which decrease the flow velocity and allow for some silt and stream bed material to collect inside.

ISCO ALP is ideally suited for direct buried culverts located in environmentally sensitive areas to meet aquatic life demands — a fish-friendly, no-excavation aquatic organism passage solution that is economically feasible, quickly installed and nondisruptive to the motoring public.