Hydrologist monitoring a river by a bridge

Create a documentary photograph of a hydrologist lowering a water-quality sensor from a secure maintenance platform beside a city bridge pier. Capture the instant the probe touches the dark river, sending small ripples outward; a teammate records the reading on a clipboard behind the railing. Frame at waist height with the cable leading toward the water and the bridge structure receding through the background. Use soft overcast light, wet concrete, realistic field equipment, and an unobstructed view of the sensor. Avoid readable labels, logos, and staged laboratory effects.

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