The surface sediment, subsurface sediment, and hyporheos were sampled by freeze‐coring at three sites of contrasting geomorphology in a New Zealand gravel‐bed stream. No differences in size class composition were detected among the subsurface sediments of the three sites but the forced pool‐riffle (a stretch of stream where the sequence of pool and riffles is controlled by in‐channel bedrock outcrops) had significantly finer s...

At near‐peak flow of a large flood in a New Zealand stream, we took 10 Surber samples in calm, shallow areas of an inundated flood plain. The next day, when discharge was still high enough to cause bed movement in the main channel but the flood plain had dried out again, we collected 10 sediment samples in the dry flood plain. Invertebrate taxon richness in during‐flood samples was 83% of that found in the main channel after a...