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Click here to learn about sediments: 701 About Sediments

The Conclusion

Building a dam could hurt the estuary because the sediments can get backed up and prevent salmon from laying eggs. This can happen when the sediments from up the river get piled up and cause the water level to rise even when the water depth doesn't get any deeper. The fish and organisms would then not be able to go to the ocean and would be stuck upstream. I would suggest putting fish ladders on the dams or use suspension bridges instead of dams. Another problem might be the housing development next to the estuary. The sediments can seep into the estuary and decrease the salmon population by destroying salmon eggs. The sediments can also float towards the sea, accumulate, and prevent ships from going in to the harbor, unless the town goes through the costly process of dredging. This can also happen when the dam gets backed up. Building and placing fabric walls by the building areas, edge of roads, the edge of bridges, and everywhere by new construction can stop the mud and keep it onshore. Some places would have to have hay walls to entirely block all sediments. These are what construction workers normally do and I hope that they will have these walls of hay and fabric to stop mud and other sediments while letting water through.