Home » Road-upgrading-stream-crossings » Navarro Vineyards Stream Crossing Upgrade and Fish Passage Barrier Removal (2 of 2)

Navarro Vineyards Stream Crossing Upgrade and Fish Passage Barrier Removal (2 of 2)

Before: Stream crossing displays 3 old drainage structures - a small culvert, on a larger culvert, on buried "Humboldt" logs.
Before: Stream crossing displays 3 old drainage structures - a small culvert, on a larger culvert, on buried "Humboldt" logs.
During: An excavator is used to remove the old drainage structures and the aggraded sediment upstream of the crossing
During: An excavator is used to remove the old drainage structures and the aggraded sediment upstream of the crossing
After: The new culvert is set at the natural channel gradient and is sized to accomodate both fish passage and peak flows
After: The new culvert is set at the natural channel gradient and is sized to accomodate both fish passage and peak flows
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