Tag Archive: sand

Sep 27 2011

Hydro Survey: The Airboat

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Out of any boats used for hydrographic survey and reconnaissance, from jet boat to cataraft, this is the one that gets the most reactions when it’s sitting in the parking lot: the airboat. If a cataraft allows you to say, “Who needs a boat launch?” then the airboat enables you to ask, “Who needs water?” …

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Jul 08 2011

What Does Bed Load Look Like?

Below are some interesting videos showing sediment transport from University of Minnesota’s St. Anthony Falls Laboratory of 7mm (pea gravel) and 3.8mm (coarse sand) size sediment. This is about the bed load grain size range you typically see now on the Central Platte River (Lexington to Grand Island, Nebraska). The flow is about 1.2 cfs …

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