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Is this a new or existing culvert? Is this a new or existing culvert?NewExisting

Culvert Identification?

Culvert Material? Culvert Material? *PlasticConcreteSteel

Culvert Width/Diameter (mm)

Culvert Gradient (%) Culvert Gradient (%) *Less than 1.0%1.0 - 2.0%2.0 - 3.0%3.0 - 4.0%Greater than 4.0%

Culvert Length (m)

Culvert Shape Culvert Shape *Rounded BottomFlat Bottom

Preferred Baffle Height? Preferred Baffle Height? 100mm 150mm Which baffle height should I choose? Baffles are available in 100mm or 150mm. Taller baffles create deeper rest pools but are harder to fit in smaller culverts. Learn more

Is the culvert perched? Is the culvert perched? Yes, there’s a drop at the outlet No, it’s flush with the streambed What is a perched culvert? A culvert where the outlet hangs above the streambed, often because of erosion or because fish passage wasn’t considered when it was built. This creates a drop that fish can’t swim or jump past. Learn more

Do you want offset installation? Do you want offset installation? Yes No Offset vs Centred - what’s the difference? Round Culverts: Offset baffles guide water around one end at low flows, making calmer rest pools and easier passage. Centred baffles slow the full flow and can hold more bed material. Flat-Bottom Culverts: Offset baffles are about 20% shorter and alternate left/right to meander the flow, while centred ones run wall-to-wall and retain bed material. Learn more

Does this culvert have an apron? Does this culvert have an apron? No Yes What is a culvert apron? An apron is the flat concrete slab built at the outlet, and sometimes the inlet, of a culvert. It helps protect against erosion but can also create barriers to fish passage. Learn more

Does the apron require fish passage? Does the apron require fish passage? *YesNo

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