Measuring how much dirt is in small mountain streams helps us see how cutting down trees affects water quality. It's tricky because the results can vary a lot. We need to set up stations in the right spots to compare measurements. Figuring out when to measure the dirt is a big challenge. The amount of dirt in the water depends a lot on how much water is flowing. To save money and make things easier, we're using machines to help us measure the dirt in the water.