|
| s Coho salmon = Oncorhynchus kisutch (1) | S Fork Schooner Creek (1) | S Fork Siletz River (1) |
| s geographic distribution (1) | S. Umpqua River (1) | Sabine's gull=Xema sabini (2) |
| sablefish = Anoplopoma fimbria (5) | sablefish=Anoplopoma fimbria (3) | Saboo Creek (1) |
| sacoglossus species (1) | Sacramento River (1) | Sacramento squawfish=Ptychocheilus grandis (3) |
| Sacramento sucker=Catostomus occidentalis (3) | Saddle Bag Mountain (3) | Saddleback gunnel = Pholis ornata (1) |
| Saddleback gunnel=Pholis ornata (3) | Salado (1) | Salado (Or.) (3) |
| salamanders (2) | Salander Creek (1) | Salinas River (1) |
| salinity (170) | salinity data (78) | Salishan (9) |
| Salishan Spit (5) | Sally's Bend (60) | Sally's Slough (9) |
| Sally’s Bend (21) | salmon (32) | Salmon River estuary (35) |
| Salmon Creek (31) | Salmon Creek (Yaquina) (1) | Salmon Creek Landing (1) |
| Salmon Creek Marsh (3) | Salmon Harbor (2) | Salmon Harbor Moorage (3) |
| salmon hatcheries (1) | Salmon Rive (1) | Salmon River (273) |
| Salmon River Basin (10) | Salmon River Estuary (193) | Salmon River Estuary, art, education, dike removal, human impacts, marsh restoration, wetland restoration (1) |
| Salmon River Estuary, climate change, fungi, Marsh jaumea = Jaumea carnosa, Lyngbye’s sedge = Carex lyngbyei, Pickleweed = Salicornia virginica, salinity, salt marsh, Saltgrass = Distichlis spicata, sea levels, wetland vegetation (1) | Salmon River estuary, Coho salmon = Oncorhynchus kisutch, hatcheries, hatchery salmonids, wild salmonids, (1) | Salmon River Estuary, dike removal, diking, Highway 101, historical, human impacts, marsh restoration, tide gates, salt marsh, wetland restoration (1) |
| Salmon River estuary, Fraser Creek, The Nature Conservancy, Highway 101, salt marsh, marsh restoration, restoration ecology, hydrology, sea level, fish passage (1) | Salmon River estuary, human impacts, climate, habitats, land use, salinity, sea level, wetlands, wetland vegetation, zonal distribution (3) | Salmon River estuary, Tillamook Bay, Youngs Bay, Baltic rush = Juncus balticus, Pacific silverweed = Potentilla pacifica, Tufted harigrass = Deschampsia cespitosa, climate change, sea level, salt marsh, sediments, organic carbon, (1) |
| Salmon River Fish Hatchery (2) | Salmon River Formation (1) | Salmon River Hatchery (5) |
| Salmon River Siletz River (1) | Salmon River Spit (2) | Salmon River, (1) |
| Salmon River, Devils Lake, Otter Rock, Yaquina River, Beaver Creek, Alsea River Basin, Yachats River, Five Rivers, Lake Creek, Siuslaw River Basin, Wildcat Creek, Duncan Slough, Siltcoos Lake, geography, general ecosystem description, historical, demogr (1) | Salmon River, Siletz Bay, Yaquina Bay, Alsea Bay, Siuslaw River estuary, Chinook salmon = Oncorhynchus tshawytscha, English sole = Parophrys vetulus, abundance, human impacts, ecosystem health, environmental stress, pollution, water quality, (1) | Salmon species (1) |
| Salmonberry = Rubus spectabilis (1) | Salmonberry Creek (1) | Salmonberry River (1) |
| Salmonberry River (Nehalem River) (5) | salmonid species (96) | salmonid species = Oncorhynchus species (12) |
| salmonids (17) | salmonids = Oncorhynchus species (11) | Salt Creek (4) |
| salt marsh (47) | salt marsh ecology (1) | salt marsh vegetation (1) |
| Salt sandspurry = Spergularia salina (1) | Saltgrass = Distichlis spicata (5) | Saltgrass = Distichlis spicate (1) |
| Saltmarsh (2) | Saltmarsh bird’s beak = Cordylanthus maritimus Nutt. ssp. palustris (1) | Saltwort = Sarcocornia virginica (1) |
| Salza River (Austria) (1) | Sam Creek (1) | Samass River estuary (1) |
| Sampson Creek (1) | Sams Creek (4) | Sams Creek Landing (1) |
| Sams Creek Riffle (1) | San Diego Bay (1) | San Francisco Bay (5) |
| San Lorenzo Formation (1) | San Pablo Bay (1) | Sand clam = Macoma secta (7) |
| sand clam=Macoma secta (1) | Sand Creek (6) | sand dab=Citharichthys sordidius (1) |
| sand dunes (11) | Sand Lake (82) | Sand Lake Creek (1) |
| Sand Lake Estuary (67) | sand sole = Psettichthys melanostictus (5) | sand sole=Psettichthys melanostictus (2) |
| sand spits (1) | sand transport (1) | Sanderling = Calidris alba (1) |
| sanderling=Calidris alba (2) | Sandlake estuary (1) | Sandstone (81) |
| Sandy River (2) | Sandy River Basin (1) | Santa Clara River (2) |
| Santiam River (2) | Santiam River Basin (1) | Sargassum muticum (1) |
| Sashin Creek (1) | Savage Creek (2) | Sawyer Creek (1) |
| Sawyer's Bend (1) | Sawyer's Landing (12) | Sawyer’s Landing (3) |
| Sawyer’s Rapids (1) | Scappoose Formation (1) | Scare Creek (4) |
| Scared Man Creek (1) | scaup = Aythya species (1) | Scholfield Creak (1) |
| Scholfield Creek (27) | Scholfield Creek (Umpqua) (5) | Scholfield Slough (1) |
| School Creek (2) | School Fork (2) | School Fork Yachats River (1) |
| School Hollow (1) | Schoolfield Creek (2) | Schooner Creek (57) |
| Schooner Creek (Siletz) (3) | Schooner Creek Bridge (2) | Schooner Point (1) |
| Schultz Creek (1) | Schuttpele Lake (5) | scientific instrumentation (1) |
| Scofield Creek (1) | Scoloplos armaceps (1) | Scotland (13) |
| Scott Creek (9) | Scott Creek (Alsea) (4) | Scott Mount (1) |
| Scotts Mills Formation (1) | Scottsburg (5) | Scottsburg (Or.) (3) |
| scuba diving (1) | sculpin = Cottus sp. (3) | Sculpins = Cottidae spp. (1) |
| sea anemones (2) | Sea floor (12) | Sea lettuce = Ulva lactuca (1) |
| sea lettuce = Ulva spp. (1) | Sea lettuce = Ulva spp. (Enteromorpha spp.) (1) | sea level (37) |
| sea levels (8) | Sea Lion Caves (2) | Sea Lion Point: Rocky Knoll (1) |
| Sea milkwort = Glaux maritima (1) | Sea otter = Enhydra lutris (9) | Sea plantain = Plantago maritima (1) |
| Sea plantain = Plantago maritime (1) | sea stars (2) | sea vomit = Didemnum vexillum (3) |
| Seadrift Lagoon (1) | seafood processing (22) | seagrass = Zostera marina (2) |
| seagulls = Larus spp. (1) | Seal Rock (33) | Seal Rock (Or.) (1) |
| Seal Rock, Alsea Bay, Yachats River Estuary, ethnography, archeology, geography, Native Americans, sediments, paleosciences, theses (1) | Seal Rocks (1) | Searlesia dira (1) |
| Searose Beach (1) | Seascape photographs (1) | Seaside (1) |
| Seaside (Or.) (9) | Seaside arrograss = Triglochin maritima (2) | Seaside arrowgrass = Triglochin maritima (2) |
| Seaside arrowgrass = Triglochin maritime (1) | Seaside Spit (3) | Seawall Island (1) |
| Section Creek (1) | sediment (7) | sediment data (178) |
| Sedimentary (58) | Sedimentary basins (32) | Sedimentary geology (2) |
| Sedimentary rocks (259) | Sedimentary sequence (11) | Sedimentary sequences (9) |
| Sedimentary structures (55) | Sedimentary terranes (1) | sedimentation (117) |
| Sedimentology (10) | sediments (888) | Seely Creek (1) |
| segmented worms (3) | Seismic (95) | Seismic profiles (17) |
| Seismic reflection (26) | Seismicity (28) | Selenastrum capricornutum (2) |
| selenium (1) | Sensors (2) | Sequim Bay (Wa.) (1) |
| Seron Formation (1) | Serviceberry Creek (1) | settlement (1) |
| Settler Point (2) | Sevin (14) | Sewage (1) |
| sex ratio (14) | Shad = Alosa sapidissima (40) | Shad = Alosa sapidissima. Striped Bass = Morone saxatilis (2) |
| Shad = Alosa sapidissima. Umpqua River (1) | Shad=Alosa sapidissima (1) | Shade Creek (1) |
| Sharpnose sculpin = Clinocottus acuticeps (1) | sharpnose seaperch=Phanerodon atripes (1) | Shasta juga snail = Juga silicula (1) |
| shell middens (1) | Shell Point. Yaquina Bay (1) | shellfish (66) |
| shellfish disease (33) | shellfish poisoning (11) | Shield limpet=Collisella pelta (1) |
| Shields Creek (4) | shiner perch = Cymatogaster aggregata (10) | Shiner perch = Cymatogaster aggregate (17) |
| Shiner perch = Cymatogaster aggregate Wolf-eel = Amarrhichthys ocellatus (1) | shiner perch=Cymatogaster aggregata (9) | Shiner perch=Cymatogaster aggregate (1) |
| shipping (9) | Shipyard Channel (1) | Shirttail Point (1) |
| Shiveley Creek (1) | Shively Creek (1) | Shoestring Creek (1) |
| Shoreline (1) | shorelines (1) | Short Creek (2) |
| Signal crayfish = Pacifastacus leniusculus (3) | Signal crayfish = Pacifastacus leniusculus leniusculus (1) | Sijota Creek (2) |
| Siletz (1) | Siletz (Or.) (19) | Siletz Bay (286) |
| Siletz Bay Estuary (3) | Siletz Bay National Fish and Wildlife Refuge (1) | Siletz Bay National Wildlife Refuge (3) |
| Siletz Bay, Coos Bay, Coquille River estuary, Pacific Coast, mathematical modeling, human impacts, climate, habitats, land use, salinity, sea level, wetlands, wetland vegetation, zonal distribution (1) | Siletz Bay, human impacts, climate, habitats, land use, salinity, sea level, wetlands, wetland vegetation, zonal distribution (3) | Siletz Bay, Millport Slough, Coos Bay, South Slough, Bandon Marsh, San Francisco Bay, Southern California, climate, sea level, salt marsh, wetland delineation, remote sensing, Creeping bentgrass = Agrostis stolonifera, Lyngbye’s sedge = Carex lyngbyei, (1) |
| Siletz Bay, Millport Slough, Coos Bay, South Slough, Bull Island, Coquille River Estuary, Bandon Marsh, climate change, sea levels, precipitation, wetland delineation, wetland vegetation, salt marsh, remote sensing, phenology, theses (1) | Siletz Bay, Nisqually, Willapa Bay, Humboldt Bay, San Pablo Bay, Tijuana Slough, climate, natural resource management, habitat conservation, sea levels, environmental education (1) | Siletz Bay, Schooner Creek, Kernville, Dungeness crab = Metacarcinus magister (Cancer magister), Purple varnish clam = Nuttallia obscurata, recreational fisheries – shellfish (1) |
| Siletz Bay, Siuslaw Bay, Purple varnish clam = Nuttallia obscurata, ballast water, introduced species, geographic distribution, Davidson current, zonal distribution (1) | Siletz Bay, Taft, Cutler City, Salishan Spit, Subtidal Channel, Softshell clam = Mya arenaria, Purple varnish clam = Nuttallia obscurata, , recreational fisheries – shellfish, population count, maps (1) | Siletz Bay, Yaquina Bay, Alsea Bay, Yachats River estuary (1) |
| Siletz Estuary (1) | Siletz Falls (6) | Siletz Fish Hatchery (4) |
| Siletz Hatchery (2) | Siletz Indian Reservation (3) | Siletz Keys (15) |
| Siletz littoral cell (1) | Siletz Marsh (1) | Siletz Park (1) |
| Siletz Reservation (5) | Siletz Rive (2) | Siletz River (404) |
| Siletz River Basin (23) | Siletz River Bridge (1) | Siletz River Canyon (1) |
| Siletz River estuary (179) | Siletz River Estuary, Millport Slough, Petaluma Marsh, Tule Slough, Tufted harigrass = Deschampsia cespitosa, Baltic rush = Juncus balticus, Argentina anserine = silverweed cinquefoil, Creeping bentgrass = Agrostis stolonifera, saltmarsh, wetland vegeta (1) | Siletz River Fish Hatchery (1) |
| Siletz River Salmon Hatchery (1) | Siletz River Spit (1) | Siletz River Volcanics (6) |
| Siletz River, Boulder Creek, Warnick Creek, South Fork Siletz River, Beaver Creek (Siletz), Yaquina River, Mary’s River, Luckiamute River, geography, geology, paleosciences, hydrology, sediments (1) | Siletz River, Chinook salmon = Oncorhynchus tshawytscha, genetics, life history information, population biology, (1) | Siletz River, climate, precipitation, streamflow, water temperature, mathematical modeling (1) |
| Siletz River, Drift Creek, Fowler Creek, Smith Creek, Sampson Creek, Siletz River Volcanics, Tyee Formation, geology, coastal hazards, erosion, landslides, sediment data, soils, logging, mathematical modeling, water quality (1) | Siletz River, Fivemile Creek, Tahkenitch Lake, genetics, molecular biology, nematodes, parasites, taxonomy (1) | Siletz River, Mill Creek, South Fork Mill Creek, Cerine Creek, Coho salmon = Oncorhynchus kisutch, habitats, large woody debris, hydrology, sediments, juvenile fish (1) |
| Siletz River, Mill Creek, South Fork Mill Creek, Cerine Creek, Coho salmon = Oncorhynchus kisutch, large woody debris, hydrology, streamflow, juvenile fish, habitat restoration, mathematical modeling (1) | Siletz River, Mill Creek, South Fork Mill Creek, Cerine Creek, Gunn Creek, geography, habitat restoration, habitats, hydrology, large woody debris, sediment data, Pacific salmonids = Oncorhynchus spp. (1) | Siletz River, Siletz Bay, Depoe Bay, Yaquina River, Yaquina Bay, Alsea River, Alsea Bay, Siuslaw River, Siuslaw Bay, birds, marbled murrelet = Brachyramphus marmoratus, endangered species, depleted populations, population count, spatial distribution, te (1) |
| Siletz River, Siletz Falls, Steelhead trout = Oncorhynchus mykiss, depleted populations, genetics, hatchery salmonids, hatcheries, wild salmonids (1) | Siletz River, Siuslaw River, statistics, Tillamook Bay, Umpqua River, (1) | Siletz River, Siuslaw River, statistics, Tillamook Bay, Umpqua River, Yaquina River (3) |
| Siletz Spit (42) | Siletz Spit, Salishan, coastal hazards, erosion, flooding, climate, human impacts (1) | Siletz Spit, Siletz Bay, Salishan, coastal hazards, erosion, flooding, climate (1) |
| Siletz Yaquina River (1) | silica (6) | silicate (5) |
| silicate data (1) | Silicate rocks (2) | Silicoflagellates (4) |
| silicon (3) | Silkweed = Potentilla anserine (1) | Sills (2) |
| Siltcoos Creek (39) | Siltcoos Creekt (1) | Siltcoos Dunes (1) |
| Siltcoos estuary (10) | Siltcoos Lake (43) | Siltcoos outlet (5) |
| Siltcoos River (15) | Siltcoos River estuary (1) | Siltez River Hatchery (2) |
| Silurian (1) | silver (4) | Silver Creek (1) |
| Silver surf perch = Hyperprosopon ellipticum (1) | silver surfperch=Hyperprosopon ellipticum (1) | Silverspotted sculpin = Belpsias cirrhosus (3) |
| Simpson Creek (10) | Simpson Reef (2) | Singe Creek (5) |
| Siskiyou Mountains (1) | Sisters Rocks Area (1) | Sitka Flat (5) |
| Sitka periwinkle = Littorina sitkana (1) | Sitka periwinkle=Littorina sitkana Philippi 1846 (1) | Sitka spruce = Picea sitchensis (1) |
| Sitka willow = Salix sitchensis (1) | Sitka willow=Salix sitchensis (1) | Sitkalidak Formation (1) |
| Siuslaw (1) | Siuslaw Bay (77) | Siuslaw estuary (12) |
| Siuslaw Indians (1) | Siuslaw National Forest (8) | Siuslaw River (360) |
| Siuslaw River Basin (6) | Siuslaw River Bridge (1) | Siuslaw River estary (1) |
| Siuslaw River estuary (254) | Siuslaw River Estuary, Umpqua River Estuary, Oregon Dunes National Recreation Area, Pacific marten = Martes caurina, territoriality, geographical distribution (1) | Siuslaw River, Smith River, North Umpqua River, Myrtle Creek, Coquille River, McKenzie River, Applegate River, terrestrial vegetation, riparian areas, habitats, water quality, water temperature, fishes, ecosystem health, environmental law and policy, (1) |
| Sixes Rive (1) | Sixes River (99) | Sixes River estuary (39) |
| size composition (77) | Skagit River (Wash.) (1) | Skamania River (4) |
| Skillet Creek (1) | Skokomish River (1) | Skonun Formation (1) |
| Skookum Lake (1) | Skookum Pond (1) | Skull Creek (2) |
| Skunk Creek (1) | Slate Creek (2) | slender sole = Eopsetta exilis (1) |
| Slick Creek (1) | Slick Rock (1) | Slick Rock Creek (4) |
| Slick Rock Creek (Salmon) (2) | Slide Creek (7) | Slide Creek Dam (2) |
| Slide Creek Reservoir (1) | Slide Recreation Area (1) | Slides (6) |
| Sloop Creek (Yaquina) (1) | Slopeland (1) | Slotted Pen Creek (1) |
| Smallmouth Bass = Micropterus dolomieu (10) | smelt (1) | Smelt family = Osmeridae (1) |
| Smith Creek (1) | Smith River (188) | Smith River (Umpqua) (1) |
| Smith River Basin (1) | Smith River Basin (Umpqua) (1) | Smith River Falls (1) |
| Smiths Ferry (1) | Smithwick Formation (1) | smooth allifgatorfish=Anoplagonus inermis (1) |
| Smooth bay shrimp = Crangon stylirostris (1) | Smooth bay shrimp = Lissocrangon stylirostris (1) | smooth bay shrimp=Lissocrangon stylirostris (2) |
| Snag Alley (5) | Snails (1) | Snake prickleback = Lumpenus sagitta (6) |
| snake prickleback=Lumpenus sagitta (2) | Snake River (1) | Snohomish Estuary (Wash.) (1) |
| Snoqualmie River (Wa.) (1) | Snow Creek (1) | snow goose=Chen caerulescens (2) |
| snowpack (2) | Snowy plover = Charadrius nivosus (5) | Soap Creek (1) |
| sociology (4) | Sock Creek (1) | sockeye salmon = Oncorhynchus nerka (7) |
| sockeye salmon=Oncorhynchus nerka (9) | Soda Springs Dam (6) | sodium (3) |
| Softshell clam = Mya arenaria (108) | softshell clam=Mya arenaria (44) | softshell clam=Mya Mya arenaria (1) |
| Soil (8) | soils (38) | solar radiation (1) |
| solids (1) | sonar (2) | Sooke Formation (1) |
| Sooty shearwater = Puffinus griseus (2) | sound (1) | Soup Creek (2) |
| South Africa (3) | South America (1) | South Bay (5) |
| South Beach (17) | South Beach (Or.) (7) | South Beach Marina (55) |
| South Beach State Park (1) | South Beach, Or. (1) | South Carolina (2) |
| South Coos River (2) | South Dakota (2) | South Depoe Bay Creek (1) |
| South Fork Alsea River (57) | South Fork Calapooya Creek (1) | South Fork Coos River (1) |
| South Fork Coquille River (3) | South Fork Deer Creek (2) | South Fork Drift Creek (1) |
| South Fork Hinkle Creek (10) | South Fork Lobster Creek (1) | South Fork Middle Creek (1) |
| South Fork Mill Creek (Siletz) (1) | South Fork Rock Creek (2) | South Fork Schooner Creek (1) |
| South Fork Siletz River (9) | South Fork Smith River (3) | South Fork Trask River (4) |
| South Fork Umpqua River (2) | South Fork Yachats River (1) | South Jetty (47) |
| South Jetty (Siuslaw) (1) | South Myrtle Creek (7) | South Sister Creek (4) |
| South Slough (12) | South Slough (Coos Bay) (9) | South Slough Estuarine Research Preserve (1) |
| South Slough National Estuarine Research Reserve (1) | South Tenmile Lake (1) | South Umpqua (5) |
| South Umpqua Basin (1) | South Umpqua Complex fires (1) | South Umpqua Experimental Forest (3) |
| South Umpqua Falls (2) | South Umpqua River (201) | South Umpqua River Basin (1) |
| South Yachats State Park (1) | South Yamhill River (1) | Southern Molalla Indians (1) |
| Southern torrent salamander = Rhyacotriton variegatus (1) | Spain (15) | sparial distribution (1) |
| Spartina spp. (1) | spatial abundance (1) | spatial distribution (96) |
| spawning (10) | spawning behavior (1) | Spearscale orache = Atriplex patula (1) |
| species (1) | species composition (51) | species list (212) |
| species lists (4) | species lst (1) | Speckled dace = Rhinicthys osculus (4) |
| speckled dace=Rhinicthys osculus (1) | speckled sanddab = Citharichthys stigmaeus (6) | speckled sanddab=Citharichthys stigmaeus (3) |
| Spencer Bridge (4) | Spencer Creek (4) | Spencer Formation (2) |
| Sphaeroma quoianum (2) | Spilde Creek (1) | spills (1) |
| splitnose rockfish=Sebastes diploproa (2) | sponges (7) | Spotted owl = Strix occidentalis (8) |
| spotted owl=Strix occidentalis (2) | Spout Creek (5) | Sprague River (2) |
| Spring Creek (2) | Springer Creek (1) | Spruce Tree (1) |
| Squafish = Ptychocheilus spp. (1) | Squamish River estuary (1) | Squaw Creek (7) |
| St. John Creek (3) | St. Peter Creek (1) | staghorn sculpin = Leptocottus armatus (1) |
| stained macoma = Macoma inquinata (1) | stained macoma clam = Macoma inquinata (2) | Stalactites (1) |
| Stampede Creek (1) | Stanley Creek (1) | Stanley Lake (3) |
| Starr Creek (1) | starry flounde r= Platichthys stellatus (1) | Starry flounder = Platichthys stellatus (27) |
| starry flounder=Platichthys stellatus (12) | Starveout Creek (2) | statistical analyses (14) |
| statistical analysis (87) | statistical modeling (1) | statistics (124) |
| Steamboat (1) | Steamboat Creek (46) | Steamboat Falls (3) |
| Steamboat Island (9) | Steele Creek (2) | Steelhead Creek (7) |
| steelhead trout = Oncorhynchus mykiss (311) | steelhead trout = Oncorhynchus mykiss (rainbow trout = Salmo gairdneri) (3) | Steelhead trout = Oncorhynchus mykiss (rainbow trout) (10) |
| Steelhead trout = Oncorhynchus mykiss Salmon River (1) | Steelhead trout = Oncorhynchus mykiss, Alsea River, Alsea Hatchery, fishing methods, genetics, recreational fisheries – salmon, (1) | steelhead trout = Salmo gairdneri (1) |
| steelhead trout=Oncorhynchus mykiss (8) | steelhead=Oncorhynchus mykiss (20) | steelhead=Oncorhynchus mykiss (rainbow trout=Salmo gairdneri) (14) |
| Steer Creek (1) | Steller sea lion = Eumetopias jubata (5) | Steller sea lion = Eumetopias jubatis (1) |
| Steller sea lion = Eumetopias jubatus (7) | Steller sea lion=Eumetopias jubatus (2) | Stemple Creek (Siletz) (3) |
| Stemple Riffle (1) | Stereographs (1) | Steve Creek (1) |
| Stillaguamish River (1) | Stinger Creek (1) | Stockler Creek (1) |
| stoneflies (1) | Stony Creek (3) | Stout shrimp = Crangon alba (1) |
| Stouts Creek (4) | Straight Creek (1) | Strait of Juan de Fuca (2) |
| Stratification (26) | stratigraphy (271) | Strawberry Hill (1) |
| straying (11) | stream flow (6) | streamflow (78) |
| stress (4) | Strike-slip faulting (4) | Striped Bass = Morone saxatilis (38) |
| Striped Bass=Morone saxatilis (1) | striped marlin = Tetrapturus audax (1) | Striped seaperch = Embiotoca lateralis (3) |
| striped seaperch=Embiotoca lateralis (3) | striped shore crab = Pachgrapsus crassipes (1) | Striped shore crab = Pachygrapsus crassipes (3) |
| striped shore crab=Pachgrapsus crassipes (1) | striped surfperch = Embiotoca lateralis (1) | Strontium (2) |
| Stuart Fork Formation (1) | Stump Creek (3) | Stump Lake (1) |
| Subduction (44) | Submarine canyons (9) | Submarine fans (13) |
| Submarine volcano (1) | Submarine volcanoes (1) | subsidence (7) |
| subsistance food gathering (1) | Sudan Creek (1) | Sugar Creek (1) |
| Sugar kelp = Laminaria saccharina (1) | Sugar pine = Pinus lambertiana (1) | Suicide Creek (1) |
| sulfate (2) | sulfate chloride (1) | Sulfide deposits (1) |
| sulfides (1) | sulfur (1) | sulfur cycle (1) |
| sulphate (12) | sulpher cycle (4) | sulphide (9) |
| sulphide data (3) | sulphides (3) | sulphite (1) |
| Sulphur Creek (1) | Sulphur Springs (1) | Sulphur Springs (Or.) (1) |
| Sumatra (2) | Suminoe oyster=Crassostrea ariakensis (7) | Summers Creek (1) |
| Summerville Formation (1) | Summit (1) | Summit Creek (1) |
| Summit Prairie (2) | Sunset Bay (3) | Sunset Landing (2) |
| Sunshiine Creek (2) | Sunshine Creek (16) | Sunshine Creek (Siletz) (5) |
| Surf scoter = Melanitta perspicillata (1) | Surf smelt = Hypomesus pretiosis (13) | surf smelt = Hypomesus pretiosus (1) |
| Surf smelt=Hypomesus pretiosis (1) | surf smelt=Hypomesus pretiosus (1) | surfing (1) |
| surfperch = Embiotocidae (1) | Surprise Creek (2) | survey (1) |
| Surveying (1) | Surveyor Creek (1) | surveys (2) |
| survival (3) | Survival rate (2) | Susan Creek (5) |
| Susan Creek Campground (1) | Susan’s Picnic (1) | sustainability (1) |
| Sutherlin (6) | Sutherlin Creek (12) | Sutherlin Creek Dam (2) |
| Sutton Creek (1) | Swamp Creek (3) | Sweat Creek (1) |
| Sweden Creek (1) | Sweet Creek (Siuslaw) (2) | Sweetbriar Creek (1) |
| Swiftwater (2) | Switchback Creek (1) | Switzerland (2) |
| Sylman Creek (1) | Symbiosis (2) | |
