“How do fish climb waterfalls?” That’s a question the Fish Ladder in Auckland answers. This structure offers a unique solution. It helps fish migrate upstream past barriers. These barriers can be anything that blocks their natural path.
The Fish Ladder provides passage for fish. It allows them to move over or through obstacles. Without such ladders, fish migration would be severely limited.
Traditional fish passages were often problematic. They were made with concrete and rock. Construction was time-consuming and expensive. Heavy machinery disrupted the natural habitat. Waterways had to be diverted. Freshly poured concrete leached lime. This could be fatal to aquatic life. Concrete structures eroded quickly. Cracks appeared. Water undermined the structure’s integrity.
Fish Ladder Solutions recognized the need for a better approach. After four years of development, they perfected a unique design. Their fibreglass fish ladder is cost-effective. It is also environmentally friendly. Installation is easy. The ladders can be made off-site. This minimizes disruption to the natural habitat.
These fish ladders have several features. They stop culvert pipe erosion. Moulded river stones assist fish. Fish can rest between the stones. Resting pools are set every 1.5 meters. These allow fish to pause during their upstream journey. The ladders are lightweight yet strong. They are also robust.
Installation is quick and easy. The ladders fit all size culvert pipes and weirs. This is achieved by a simple change to the starter flange. The design is modular. Ladders come in 1.5-meter lengths. These bolt together for the desired length. Corners can be added to change direction. The ladders are designed and made in New Zealand. They can be made to blend with any environment. The colour can be changed to suit.
A fish count survey at Okiritoto Stream proves the ladders’ effectiveness. The survey was done before and after installation. Results were very pleasing. On the first night of fish counting, after the first set of ladders were installed, two banded kokopu and over 100 native fish climbed the ladders. After the second set of ladders were installed, over 500 native fish climbed on the second night.
Fish Ladder Solutions offers several services. They manufacture and install fish ladders and pipe baffles nationwide. They organize fish counting. They inspect culvert pipes and weirs and advise on solutions. They also provide follow-up maintenance and inspections.
So, as you stand here, consider the ingenuity of the Fish Ladder. It’s not just a structure. It’s a vital component of a healthy ecosystem. It ensures that fish can continue their natural migration. These ladders play a crucial role in preserving biodiversity. They help maintain the delicate balance of our waterways.