Related by context. Frequent words. (Click for all words.) 56 Elwha 55 Elwha River 53 beaver dams 52 contaminated sediments 52 spawning habitat 52 coffer dam 51 Blackfoot River 48 fishway 48 culverts 48 Snake River dams 48 roadbed 47 streambed 47 cofferdam 47 weirs 47 spawning beds 47 sediment runoff 46 Sediment 46 Penobscot River 46 sandbars 46 bull trout 46 streambeds 46 migratory fish 45 Middle Fork 45 train trestle 45 sediment 45 aquatic habitat 44 flume 44 blowdown 44 woody debris 44 Shasta Dam 44 wetland habitat 44 tidal marsh 44 Folsom Dam 44 fish hatchery 44 Willapa Bay 44 dams 44 Snake River 44 dam 44 hatchery steelhead 44 mainstem 44 silt 44 salmon spawning 44 Budd Inlet 44 clearcuts 44 salmon 44 weir 44 migrating salmon 43 Hetch Hetchy 43 Chehalis River 43 drainages 43 revetment 43 overgrown vegetation 43 beaver dam 43 Friant Dam 43 steelhead 43 Klamath River 43 pumphouse 43 bridge pilings 43 dredge spoils 43 Canyon Dam 42 riparian habitat 42 aquatic vegetation 42 culvert 42 spawning grounds 42 diking 42 Sabino Canyon 42 Duwamish 42 ponds 42 Snoqualmie River 42 Nisqually River 42 gillnets 42 Deception Pass 42 contaminated sediment 42 pilings 42 causeways 41 watersheds 41 detention basins 41 seawall 41 Lake Pepin 41 Roadless Rule 41 dredged material 41 Coho salmon 41 Hood Canal 41 aquatic ecosystem 41 Animas River 41 Buriganga 41 Platte River 41 Snake rivers 41 smolts 41 coulee 41 Taum Sauk 41 floating docks 41 Hells Canyon 41 Grand Coulee Dam 41 outfall 41 hydroelectric dams 41 Nooksack River 41 shoreline erosion 41 Duwamish River 40 Rogue River 40 railroad underpass