Floating Ramp

Floating Ramps are a simple and effective solution for improving fish passage at perched culverts and small barriers. Designed for easy retrofitting, they provide a continuity for a broad range of species and life stages.

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Specifications & Features

Cost-Effective Fish Passage Solution for Perched Culverts

ATS Environmental Floating Ramps provide a simple, low-cost retrofit solution for improving fish passage at perched culverts and small barriers. Designed with self-adjusting floats and UV-stable construction, these lightweight ramps maintain contact with water flow across varying conditions. The hinged design accommodates changing water levels while the robust polyethylene construction ensures long-term durability with minimal maintenance.

Compatible with mussel ropes and FlexiBaffles, Floating Ramps can be installed as standalone solutions or integrated into comprehensive fish passage systems. Easy two-person installation makes them ideal for both temporary and permanent applications across New Zealand waterways.

Floating Ramp Specifications & Features

Self-Adjusting to Water Levels

Hinged attachment and bottom-end floats automatically adjust to changing water levels and flow conditions, maintaining constant contact with the waterway for reliable fish passage.

Wetted Margin for Fish Passage

Provides essential splash zone and wetted margin surface, supporting a wide range of native fish species including climbing species during upstream migration.

Compatible with Other Solutions

Works effectively alongside mussel ropes and FlexiBaffles to create comprehensive fish passage systems, enhancing ecological connectivity at challenging sites.

Lightweight Robust Construction

Made from UV-stable polyethylene weighing 17kg-25kg depending on length. Easy two-person installation with no heavy equipment required for transport or setup.

Low-Cost Retrofit Solution

Cost-effective option for improving fish passage at existing structures including perched culverts, weirs, and spillways without major structural modifications.

Suits New and Existing Structures

Can be installed prior to new culvert construction or retrofitted to existing barriers such as weirs, culverts, and low-head drop structures.

Customisable Length Options

Custom-built to site requirements with standard 540mm width. Flexible sizing accommodates various culvert heights and barrier configurations for optimal fish passage solutions.

Surface Options Available

Choose between smooth or dimpled surface textures to suit different fish species and site conditions, optimising grip and passage effectiveness.

Minimal Maintenance Required

Designed to shed debris and prevent blockages. Durable construction ensures long service life with minimal ongoing maintenance in New Zealand conditions.

ATS Environmental offers comprehensive support for our Floating Ramps, ensuring each installation meets site-specific needs. Our services include site assessments to determine the best placement, hands-on installation by experienced technicians, and staff training where needed to ensure proper use and maintenance over time.

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Where Floating Ramps Work Best

Rubber Ramps are ideal for:

  • Perched culverts

  • Box culverts and aprons

  • Low-head drop structures

  • Weirs and spillways

  • Sites with low to moderate water flow

  • Projects focused on fish passage restoration

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