Intake Efficiency Testing Data for the US XPD-24-200 Isokinetic Suspended-Sediment and Water-Quality Collapsible-Bag Sampler

This data release documents performance testing of an experimental suspended‑sediment and water‑quality collapsible‑bag sampler with point‑ or depth‑integrating capabilities, the US XPD‑24‑200. Water samples were collected at known velocities in a controlled tow‑tank environment and during lake tows using multiple sampler‑nozzle sizes. For each test, tow velocity, sample volume, and sampling duration were measured, and these observations were used to compute the sampler’s intake efficiency.