|Sampling area within the 'shield' showing |
sediment conditions prior to dam removal (2010)
We sampled both mainstem and floodplain channel habitat, collecting 30 samples from just below Glines Canyon Dam to near the mouth of the river. A plywood shield blocked water flow during sampling, providing a calm water area where the sample of the river bed material could be collected. We removed the surface layer of the sediment and placed it into a sample bag for later processing to determine sediment size distribution. We also collected a 'before-and-after' water sample to determine the amount of fine sediment that was suspended in the water column during sampling.