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C hehalis R iver B asin

C hehalis R iver B asin. Re du c ing Flood Dama ge a nd Restoring A qu a tic S p ec i e s 8:30 a.m. March 11, 2019 Thurston County Commissioner Menser. Today’s Pr esentation. Pr o v ide upd a te , e n c ou r a ge di sc u ss ion . K e y m essa g e s . . .

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C hehalis R iver B asin

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  1. ChehalisRiverBasin ReducingFloodDamageand Restoring Aquatic Species 8:30 a.m. March 11, 2019 Thurston County Commissioner Menser

  2. Today’sPresentation... • Provideupdate, encouragediscussion. • Keymessages... • Broadagreement--Forfirsttimein a centurythereis progress acrosstheBasinonnextstepstoreduceflooddamage and enhance salmon, aquaticspecies. • Basin-widestrategy--Anaction-oriented,multi-phasedBasin-widestrategyis needed toprotectcommunities alongtheriverandto enhanceaquaticspecies. • Collaborationiskey--WALegislature,Governor’sOffice,Governor’sChehalis BasinWorkGroup,ChehalisRiverBasin FloodAuthority,andWAAgencies allworking together=Action! • 4. Fundamentalprinciple--Solvingone’sproblemsdoesn’t increaseanother’s. . March 2019

  3. Action... PhotoSource: THECHRONICLE March 2019

  4. “ChehalisRiver BasinFloodAuthority” • Formedin2008 • Formalbodyfocusedon:(1) floodhazardmitigation throughoutthe Basin;and(2) decision-makingthatis ... • informedbyscience. • protectiveofBasinresidents/communities. • environmentally appropriate. • Basinjurisdictionsrepresented • GraysHarborCounty • CityofAberdeen • CityofCosmopolis • City of Hoquiam • CityofMontesano • CityofOakville LewisCounty ThurstonCounty o TownofBucoda o CityofCentralia oCityofChehalis oCityofNapavine oTownofPeEll March 2019

  5. “Office of Chehalis Basin” March 2019

  6. Background... • 2007Storm-- $938M Basin-widedamage, $300M losteconomicactivity(WA). CityofCentralia STEVERINGMAN / SEATTLETIMES Exit77 (I-5)inChehalis STEVERINGMAN / SEATTLETIMES State Route6, Westof Adna MIKE SALSBURY/ AP PhotosSource: LEWISCOUNTY, DIVISION OF EMERGENCY MANAGEMENT March 2019

  7. Background... • 2007Flood--I-5andHwy507InterchangelookingSouth. CityofCentraliaand I-5 STEVERINGMAN / SEATTLETIMES March 2019

  8. Background... • 289,983acrefeetofmeasuredwater (12/03-08/2007). • Equivalentto coveringroadway betweenChehalisandNorthof Kamloopswith1footofwater1-mile wideor covering... • 80%ofKitsapCounty. • 69%ofClarkCounty. • 59%ofThurstonCounty. March 2019

  9. Background... • Rankedhighflowevents(1932- 2012)... • I-5closed1990,1996,2007,2009. • Fivelargest eventssince1986--Frequentfloodsaregettingworseand damageisincreasing... • 100 year flood estimate -- Increased by 33% in last 30 years. 90000 1 ChehalisRiverFlowRatesnear GrandMound(cubicft./sec.) 2 80000 3 70000 60000 4 5 6 7 8 9 50000 10 11 13 12 13 15 16 40000 30000 20000 10000 0 March 2019

  10. Background... • Chehalis isthesecondlargest riverbasininthestate,richinnatural resources... • Salmonpopulationsare15-25%ofhistoriclevels. • TMDLforthebasin(http://www.ecy.wa.gov/programs/wq/tmdl/ChehalisRvrTMDLSummary.html). Upper Chehalis(5/31/2010) JAMESE. WILCOX/ WILDGAMEFISH CONSERVATIONINTERNATIONAL www.chehalisbasinpartnership.org 10 March 2019

  11. Background... Salmon-habitat potential Source: Chehalis Basin Strategy: Reducing Flood Damage and Restoring Aquatic Species; Pe Ell Public Meeting; 10/14/2014; Page 13. March 2019

  12. Solution= Basin-wideApproach Action-oriented,Multi-phasedApproach Basin-WideRelationships HydraulicUnderstanding Master Strategy (Game Plan) LargeCapitolProjects Small-ScaleLocalProjects Local FloodplainManagement RestoreSalmonandAquaticSpecies EarlyFloodWarning Outreach,Educationand Communication March 2019

  13. 1. Basin-WideRelationships March 2019

  14. 2. HydraulicUnderstanding • Science-basedmodel --Toinformdecision-makersonhydrauliceffects of potentialfloodreliefoptions(atbasin-wideand localizedscales). • 108miles --Mouthof ChehalisRiver upstreamtoPe Ell (108miles). March 2019

  15. 2. HydraulicUnderstanding • Example: Basin- wideeffects analysis(Governor’s Chehalis Basin Workgroup, 2014 Recommendations Report, 11/25/2014) March 2019

  16. 3. Master Strategy (Game Plan) • Evolution (2008 to present): • Flood Authority  Governor’s Workgroup  Office of Chehalis Basin. • Key Elements: • Evaluation, implementation of Large Capital Projects: • Flood Retention Dam on upper Chehalis River. • Airport Levee Improvements. • North Shore Levee in Aberdeen, Hoquiam. • Basin-wide Aquatic Species Restoration (100+ miles spawning/rearing habitat). • Local Flood-Damage Reduction Projects. • Local Flood-Proofing, including raising homes, CRS actions, local ordinance improvements, etc. • Cost = $500-600M; Benefit = $720M (100 yrs.); No Action = $3.5B (100 yrs.). March 2019

  17. 4. LargeCapitolProjects • 2013-15: • Technicalteamdeveloped baseline knowledge on safety,feasibilityofFlood Retention Dam alternatives--fieldvisits,siteanddesignconsiderations,world-wideresearch,etc. • Permanentreservoir(w/ fishpassage) orRun-of-the-river(no permanentreservoir). • RollercompactconcreteorEarthenfill. • Flood-controlonly orMulti-purpose. • WSDOTevaluatedI-5 Protection alternatives -- levees,walls,raise road,etc. • 2015-17: • Formal environmental review (Programmatic EIS) was conducted to evaluate alternatives. • 2017-19: • Project-level EIS starts. Photo source: ANCHORQEA March 2019

  18. Aberdeen Proposed Northside Dike/Levee 5. LocalProjects (Basin-wide) • 2012Supplemental CapitalBudget: • $5.0M • 2013-15CapitalBudget: • $10.74M • 2015-17CapitalBudget: • $15.7M • 2017-19CapitalBudget: • $9.6M • 24 complete • 15 underway • $40.4M State (2012-19) • $9.3M Local (2012-19) March 2019

  19. 5. LocalProjects (Farm Pads) March 2019

  20. 6. LandUse,FloodplainManagement (Floodproofing Pilot) March 2019

  21. 7. RestoreSalmonand AquaticSpecies • Results so far . . . • 23 Complete ($3.8M) • 31 Underway ($7.9) March 2019

  22. 7. RestoreSalmonand AquaticSpecies OtherFishandAquaticSpecies OregonSpottedFrog OlympicMudminnow NorthernPikeminnow Redside Shiner LargescaleSucker LongnoseDace WesternToad Sculpin(6species) March 2019

  23. 8. EarlyFloodWarning • www.chehalisriverflood.com • Front-facingwebsite. • Datacollection,data synchronization. • Improvedforecasting, early-warning. http://www.chehalisriverflood.com March 2019

  24. 8. EarlyFloodWarning • Localizedtracking,forecasting... March 2019

  25. 9. Outreach,EducationandCommunication Outreach Visits Website Project Signs Chehalis Basin Flood Stories Informational Analyses March 2019

  26. 9. Outreach,EducationandCommunication www.ezview.wa.gov/chehalisfloodauthority www.chehalisriverflood.com www.chehalisbasinstrategy.com March 2019

  27. Closing– 2007FloodDamage... Chehalis River near Doty USGS March 2019

  28. Closing– 2007FloodDamage... ClearingMudin Curtis, WA STEVERINGMAN / SEATTLETIMES March 2019

  29. Closing– 2007FloodDamage... Curtis,WA,Aftermath of7 Feet ofWater STEVERINGMAN / SEATTLETIMES March 2019

  30. Closing– 2007FloodDamage... ChandlerRoadBridge nearDoty,WA STEVERINGMAN / SEATTLETIMES March 2019

  31. Closing– 2007FloodDamage... 31 March 2019

  32. Closing– 2007FloodDamage... March 2019

  33. Closing– 2007FloodDamage... I-5UnderWater BRUCEELY/ OREGONIAN March 2019

  34. Closing– 2007FloodDamage... Chehalis,WA STEVERINGMAN / SEATTLETIMES March 2019

  35. Closing– 2007FloodDamage... March 2019

  36. Closing– 2007FloodDamage... JacksonStreet, Centralia,WA STEVERINGMAN / SEATTLETIMES March 2019

  37. Closing– 2007FloodDamage... I-5UnderWater BRUCEELY/ OREGONIAN March 2019

  38. Closing– 2007FloodDamage... PhotosSource: WSDOT March 2019

  39. Closing– 2007FloodDamage... March 2019

  40. Closing– 2007FloodDamage... March 2019

  41. Closing– 2007FloodDamage... WakefieldRoad, Elma,WA GREG GILBERT/ SEATTLETIMES 41 March 2019

  42. What’s Next– 2019-21 Budget Development 42 March 2019

  43. What’s Next– EIS Starts 43 March 2019

  44. ForFurtherInformation... VickieRaines,Grays Harbor County Representative Chair, ChehalisRiverBasinFloodAuthority Chair,Chehalis Basin Board 360/249-3731 vraines@co.grays-harbor.wa.us Edna Fund, Lewis County Representative Vice-Chair, Chehalis River Basin Flood Authority Member, Chehalis Basin Board 360/740-1283 Edna.Fund@lewiscountywa.gov ScottBoettcher Staff, ChehalisRiverBasinFloodAuthority 360/480-6600 scottb@sbgh-partners.com Cindy Wilson (Alternate for Thurston County) and Alan Vanell Members, ChehalisRiverBasinFloodAuthority wilsonc@co.thurston.wa.us counvanell@scattercreek.com March 2019

  45. Key Links... • 1. Chehalis River Basin Flood Authority -- www.ezview.wa.gov/chehalisfloodauthority • Flood Warning System -- www.chehalisriverflood.com • Sign-Up for Email Gage Alerts -- https://www.ezview.wa.gov/DesktopModules/Documents2/View.aspx?tabID=28124&alias=1492&mid=69571&ItemID=6465 • See Gage Alerts Tally Over Time -- https://data.wa.gov/dataset/Gage-Alert-Sign-Ups-2014-18/f4wb-hxgz • Interactive Map (Local Projects, Farm Pads, Flood Warning System Gages, Bucoda Pilot, Habitat Projects) -- http://arcg.is/19GXma • 2. Chehalis Basin Strategy -- www.chehalisbasinstrategy.com • 3. Office of Chehalis Basin – https://ecology.wa.gov/About-us/Get-to-know-us/Our-Programs/Office-of-Chehalis-Basin March 2019

  46. ThankYou... ThankYou! Note: ThisPresentationis Available at “ChehalisRiverBasinFloodAuthority”Website atwww.ezview.wa.gov/chehalisfloodauthority. Email Distribution List PatAnderson Pat.Anderson@lewiscountywa.gov March 2019

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