Two members of the US Geological Survey collected water samples from the Susquehanna River this morning. They stood several piers out on the Columbia side of the Veterans Memorial Bridge.
To collect the samples, they used a fish-shaped weight that held a small container.
The weight was suspended on a cord from a portable crane with a pulley.
The weight was lowered and raised several times to collect samples.
The shape of the weight oriented it in the direction of the water current to fill the container.
The workers moved to several locations on the bridge to collect samples. The samples are used to determine such things as sediment load rates and phosphorus levels, among others.
They parked their vehicle near Rotary Park.
According to the USGS website:
"The USGS serves the Nation by providing reliable scientific information to describe and understand the Earth; minimize loss of life and property from natural disasters; manage water, biological, energy, and mineral resources; and enhance and protect our quality of life."