Persistent, Bioaccumulative Toxics (PBTs) Purpose: Assess Persistent, Bioaccumulative, and Toxic Chemicals (PBT) Includes: Assessment of PBTs in environmental media, including mercury in fish and organic PBTs in sediment cores Timeframe: 2005 to present. Monitoring program site: Persistent, Bioaccumulative Toxics (PBTs) Study Name help Help for Study Name select History of Mercury in Selected Washington Lakes Determined from Age-Dated Sediment Cores: 2006 Sampling Results. PBT Monitoring: Measuring PFC Levels in Washington Mercury Trends in Freshwater Fish 2010 Mercury Screening in Lake Ozette Sockeye Mercury Trends in Freshwater Fish 2008 PBT Trend Monitoring: Lead in Suspended Particulate Matter, 2009 Determination of PBT Chemical Trends in Selected Washington Lakes Using Age-Dated Sediment Cores: 2010 Sampling Results. Speciated Mercury in the Lake Ozette Drainage. PBT Trend Monitoring: Lead in Suspended Particulate Matter 2010 PBT Chemical Trends in Washington State Determined from Age-Dated Lake Sediment Cores, 2015 Sampling Results PBT Trend Monitoring: Measuring Lead in Suspended Particulate Matter from Washington State Rivers and Lakes, 2015 Results. PBT Trend Monitoring: Lead in Suspended Particulate Matter 2011 Measuring Mercury Trends in Freshwater Fish in Washington State, 2011 Sampling Results Mercury Trends in Freshwater Fish 2006 Measuring Mercury Trends in Freshwater Fish in Washington State, 2013 Sampling Results PBT Chemical Trends in Washington State Determined from Age-Dated Lake Sediment Cores, 2014 Sampling Results Determination of Persistent, Bioaccumulative and Toxic Chemical Trends in Selected Washington Lakes Using Age-Dated Sediment Cores: 2008 Sampling Results PBT Trend Monitoring: Measuring Lead in Suspended Particulate Matter from Washington State Rivers and Lakes, 2013 Results. Mercury Trends in Freshwater Fish 2009 Determination of PBT Chemical Trends in Selected Washington Lakes Using Age-Dated Sediment Cores: 2009 Sampling Results. Mercury Trends in Freshwater Fish 2007 PBT Trend Monitoring: Measuring Lead in Suspended Particulate Matter from Washington State Rivers and Lakes, 2012 Results. PBT Chemical Trends in Washington State Determined from Age-Dated Lake Sediment Cores, 2011 Sampling Results History of Mercury in Selected Washington Lakes Determined from Age-Dated Sediment Cores: 2007 Sampling Results PBT Chemical Trends in Washington State Determined from Age-Dated Lake Sediment Cores, 2012 Sampling Results Measuring Mercury Trends in Freshwater Fish in Washington State, 2012 Sampling Results PBT Trend Monitoring: Lead in Suspended Particulate Matter, 2008 Mercury Trends in Fresh Water Fish 2005 PBT Chemical Trends in Washington State Determined from Age-Dated Lake Sediment Cores, 2013 Sampling Results Measuring Mercury Trends in Freshwater Fish in Washington State, 2014 Sampling Results Measuring Mercury Trends in Freshwater Fish in Washington State, 2016 Sampling Results PBDE Flame Retardants in Spokane River Fish Tissues and Osprey Eggs. Measuring Mercury Trends in Freshwater Fish in Washington State, 2015 Sampling Results Study Name match type select Begins With Contains Equals Location Name help Help for Location Name select Lower Columbia River, nest C84 LAKE ST. CLAIR Spokane River (River Mile 75.1 - 78.0) Quinault River POTHOLES RES, 10 MI SW MOSES L Walupt Lake Banks-F2 Spokane River at Nine Mile Dam Lower Columbia River, nest C113 Spokane WWTP Effluent MOSES LAKE Mason Lake WHATCOM LAKE Samish Lake West Medical Lake LONGFELLOW CREEK QUINAULT R OLYMPIC NATIONAL PARK SNAKE RIVER DOWNSTREAM OF CLARKSTON Lower Columbia River, nest C76B Lower Columbia River, nest C76A Lake Meridian American Lake Spokane River (River Mile 54.0 - 54.1) LIBERTY LAKE VANCOUVER LAKE Fazon Lake Hylebos Creek Spokane River (River Mile 63.1 - 64.0) Okanogan River Spokane River (River Mile 84.0 - 84.2) Duwamish River Puyallup River Spokane River at Nine Mile EMERSON Thornton Creek 3 Nahwatzel Lake Lake Wenatchee Lacamas Lake OFFUT LAKE West Medical Lake WWTP Effluent Marine Park WWTP Effluent KITSAP LAKE Deer Lake GOODWIN LK ROUGHLY 15 MI NW OF EVERETT Columbia River at McNary Dam Huge Creek LELAND L, 5 MI N OF QUILCENE Spokane River (River Mile 56.5 - 57.1) Black Lake Spokane River (River Mile 40.8) Wenatchee River Angle Lake McNary Dam, Columbia River Entiat River Loon Lake Horsethief Lake Williams Lake LOON L, 20 MI S CHEWELAH OFF HWY 395 Sumner WWTP Effluent LAKE CAVANAUGH Lake Whatcom Lower Columbia River, nest C71C Nooksack River LOOMIS LAKE Lower Goose Lake UMBRELLACREEKNEARCOUNTYBRIDGE YAKIMA R, 12 MI NW RICHLAND, RM 18-20 Lone Lake LAKE SAWYER Upper Columbia River SILVER L NR CASTLE ROCK Failor Lake MCINTOSH LAKE FDR Lake Lower Columbia River, nest C111A Lake Washington Lower Columbia River, nest C108A Unnamed Creek (Tea Creek) Wannacut Lake NEWMAN LAKE Queets River Palmquist Creek Lake Goodwin Snohomish River MERIDIAN LAKE Upper Twin Lake Columbia River at Rock Island Dam Lower Columbia River, nest C82 Lower Columbia River, nest C105B Bead Lake LAKE SAMMAMISH Lower Columbia River, nest C79 Spokane River (River Mile 38.8 - 39.6) Lower Columbia River Lake Stevens OZETTE LAKE IN OLYMPIC NATIONAL FOREST ENTIAT RIVER ABOVE ENTIAT FALLS Yakima River Spokane River (River Mile 96.2) South Fork Palouse River LAKE OZETTE St. Clair Lake Nahwatzel-F Pierre Lake Rock Lake Walla Walla River Spokane River at Idaho border Lower Columbia River, nest C112 Sprague Lake Location Name match type select Begins With Contains Equals Watershed Resource Inventory Area (WRIA) help Help for Watershed Resource Inventory Area (WRIA) 01 - Nooksack 02 - San Juan 03 - Lower Skagit-Samish 04 - Upper Skagit 05 - Stillaguamish 06 - Island 07 - Snohomish 08 - Cedar-Sammamish 09 - Duwamish-Green 10 - Puyallup-White 11 - Nisqually 12 - Chambers-Clover 13 - Deschutes 14 - Kennedy-Goldsborough 15 - Kitsap 16 - Skokomish-Dosewallips 17 - Quilcence-Snow 18 - Elwah-Dungeness 19 - Lyre-Hoko 20 - Soleduck-Hoh 21 - Queets-Quinault 22 - Lower Chehalis 23 - Upper Chehalis 24 - Willapa 25 - Grays-Elochoman 26 - Cowlitz 27 - Lewis 28 - Salmon-Washougal 29 - Wind-White Salmon 30 - Klickitat 31 - Rock-Glade 32 - Walla Walla 33 - Lower Snake 34 - Palouse 35 - Middle Snake 36 - Esquatzel Coulee 37 - Lower Yakima 38 - Naches 39 - Upper Yakima 40 - Alkali-Squilchuck 41 - Lower Crab 42 - Grand Coulee 43 - Upper Crab-Wilson 44 - Moses Coulee 45 - Wenatchee 46 - Entiat 47 - Chelan 48 - Methow 49 - Okanogan 50 - Foster 51 - Nespelem 52 - Sanpoil 53 - Lower Lake Roosevelt 54 - Lower Spokane 55 - Little Spokane 56 - Hangman 57 - Middle Spokane 58 - Middle Lake Roosevelt 59 - Colville 60 - Kettle 61 - Upper Lake Roosevelt 62 - Pend Oreille County help Help for County Adams Asotin Benton Chelan Clallam Clark Columbia Cowlitz Douglas Ferry Franklin Garfield Grant Grays Harbor Island Jefferson King Kitsap Kittitas Klickitat Lewis Lincoln Mason Okanogan Pacific Pend Oreille Pierce San Juan Skagit Skamania Snohomish Spokane Stevens Thurston Wahkiakum Walla Walla Whatcom Whitman Yakima Field Collection Date Range help Help for Field Collection Date Range Field Collection Date Range from RadDatePicker RadDatePicker Open the calendar popup. Calendar Title and navigation Title and navigation << < April 2026 > << April 2026   S M T W T F S 14 29 30 31 1 2 3 4 15 5 6 7 8 9 10 11 16 12 13 14 15 16 17 18 17 19 20 21 22 23 24 25 18 26 27 28 29 30 1 2 19 3 4 5 6 7 8 9   to RadDatePicker RadDatePicker Open the calendar popup. Calendar Title and navigation Title and navigation << < April 2026 > << April 2026   S M T W T F S 14 29 30 31 1 2 3 4 15 5 6 7 8 9 10 11 16 12 13 14 15 16 17 18 17 19 20 21 22 23 24 25 18 26 27 28 29 30 1 2 19 3 4 5 6 7 8 9 If one date field has a value, the other must have a value. Sample Taxon Name help Help for Sample Taxon Name select Alosa sapidissima Ambloplites rupestris Ameiurus nebulosus Catostomus macrocheilus Coregonus clupeaformis Cyprinus carpio Lepomis gibbosus Lepomis macrochirus Micropterus dolomieui Micropterus salmoides Mylocheilus caurinus Oncorhynchus clarkii Oncorhynchus mykiss Oncorhynchus nerka Pandion haliaetus Perca flavescens Pomoxis nigromaculatus Prosopium williamsoni Ptychocheilus oregonensis Salmo trutta Salmo trutta X Salvelinus fontinalis Salvelinus confluentus Salvelinus fontinalis Sander vitreus Tinca tinca Sample Taxon Name match type select Begins With Contains Equals Include common name(s) Sample Matrix help Help for Sample Matrix select -Select- Air/Gas Habitat Other Liquid Solid/Sediment Tissue Water Parameter Name help Help for Parameter Name select Dibenzofuran Retene Percent Solids PBDE-190 Sum of meduim-chain chloroparaffin pH Pyrene Fish Weight, Whole Individual Fish PBDE-181 PBDE-085 PBDE-017/025 Hexabromocyclododecane, gamma- Naphthalene Nitrate + Nitrite as N Conductivity, Specific (at 25 deg C) PBDE-116 1,2-Bis(2,4,6-tribromophenoxy)ethane Pentabromoethylbenzene Acenaphthylene Benzo(b)fluoranthene Carbazole Copper Lipids Moisture Content PBDE-047 PBDE-206 PBDE-105 Potassium perfluorodecane sulfonate PBDE-183 PBDE-012/013 Perfluorobutane sulfonate PBDE-208 Particle/Grain Size, Silt Sulfate Fish Weight, Mean of Individuals in Composite Sample PBDE-207 PBDE-140 Particle/Grain Size, Gravel Mercury Total Solids Zinc Lead-210 PBDE-099 PBDE-184 PBDE-037 PBDE-035 Perfluoroheptanoic acid Perfluorododecanoic acid 2-Methylnaphthalene Chloride Particle/Grain Size, Sand Alkalinity, Total as CaCO3 Fish Total Length, Mean of Individuals in Composite Sample PBDE-153 Perfluorononanoic acid Particle/Grain Size, Fines (Silt/Clay) PBDE-051 PBDE-030 Benz[a]anthracene Benzo(a)pyrene Bromide PBDE-154 PBDE-191 Temperature, water Chrysene Total Suspended Solids Fish Age (individual) PBDE-049 PBDE-010 Methyl mercury Perfluorodecanoic acid 1-Methylnaphthalene PCN-002 Phenanthrene PBDE-100 PBDE-138 PBDE-028/033 Perfluoroundecanoic acid PBDE-155 Anthracene Benzo(k)fluoranthene Chromium Dissolved Organic Carbon Fluoranthene Fluoride Lead Titanium Chlorophyll PBDE-209 PBDE-119/120 Perfluorooctane sulfonate PBDE-077 PBDE-071 Antimony Conductivity Fish, Number in Composite Sample PBDE-032 Perfluorohexanoic acid Hexabromocyclododecane, alpha- Arsenic PBDE-008/011 Perfluoropentanoic acid PBDE-066 Benzo(ghi)perylene Fluorene Selenium Total Organic Carbon Fish Age, Mean of Individuals in Composite Sample Fish Sex (individual) PBDE-126 Perfluorobutanoic acid 1,2-bis(2,3,4,5,6-pentabromophenyl)ethane Sum of short-chain chloroparaffin PBDE-007 Perfluorohexane sulfonate PBDE-203 Hexabromocyclododecane, beta- PBDE-128 Cadmium Particle/Grain Size, Clay Dibenzo(a,h)anthracene Hexabromobenzene Fish Total Length (individual) Perfluorooctanoic acid Sum of long-chain chloroparaffin PBDE-079 Acenaphthene Indeno(1,2,3-cd)pyrene PBDE-075 PBDE-138/166 Sum of chlorinated paraffin waxes and hydrocarbon waxes PBDE-015 Perfluorooctane sulfonamide Parameter Name match type select Begins With Contains Equals Include Synonyms More search options >   Click to Search using Map

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