Dams have numerous deleterious effects on streams, including the disruption of natural flow, temperature, and coarse sediment regimes. Less well known are their effects on the transport and fate of fine sediments. This study examined the distribution of fine sediments and macroinvertebrates in a section of stream below an urban, bottom-release reservoir. Fine sediments and macroinvertebrates were sampled simultaneously from the same 0.1 m² area. Five replicates were collected from each of 8 riffles located throughout the 6.4 km long study section. There was a significant linear decrease in fine sediment with distance from the dam. Fine sediment ranged from 600 near the dam to 400 g m^-2 at the most downstream site. Fine sediment below the dam was much higher than in physically similar, non-dammed streams sampled in earlier studies, where mean fine sediment was 174 g m­^-2. The distribution of macroinvertebrates also varied longitudinally, with Simuliidae and Chironomidae dominating upstream reaches and Baetidae, Nemouridae, and Hydropsychidae more prevalent in downstream reaches. This study strongly implicated the reservoir as a point-source for fine sediment to the stream and highlights the advantage of designing study-specific sampling methods for identifying the relationship between individual stressors and the biota.