Protect, Restore, Enjoy

1. Protect, Restore, Enjoy

2. Tualatin Riverkeepers Facts • Mission: To protect & restore Tualatin River System • 501(c)(3) nonprofit membership organization • 800 member families • Staff of 4 • Programs in recreation, education, restoration and advocacy • Growing for 20 years.

3. Stormwater RunoffLand Use PlanningWetland FillSpillsEnforcementFarm PlansWater SupplyWastewaterFisheriesToxicsLow Impact DevelopmentForestryGreenspaces Advocacy Agenda

4. Testifying at Public Hearings

5. Responding to Hotline Calls

6. Weighing in on Land Use Permits

7. Organizing Public Participation

8. Discovering The Tualatin River Basin Over 80 sites to view wild things. A Nature & Recreation Guide

9. Restoration

10. Available for Loan to Community Groups

11. Dirt. It does a body good.

12. AnnualRiver Clean Up

13. Nature Awareness & Service Education

14. Rumba al Rio

15. TRK Summer Day Camp

16. Paddle Trips

17. Can we use trees in parking lots for stormwater runoff reduction?

18. The Trouble with Urban Stormwater Runoff

19. Street-to-Stream

20. The Trouble with Urban Stormwater Runoff Pollution Mouth of Willowbrook Creek in Tigard

21. The Trouble with Urban Stormwater Runoff Flooding Hall Blvd in Tigard February 1996

22. The Trouble with Urban Stormwater Runoff Flashy Streams Fanno Creek at Main Street

23. Developed Conditions

24. The Trouble with Urban Stormwater Runoff Stream Bank Erosion Fanno Creek Park - Tigard

25. SANITARY SEWER SYSTEM | STORM SEWER SYSTEM TO WASTEWATER TREAMENT PLANT TO STREAM OR RIVER City of Reno

26. Landscapes Forested vs. Developed Haines Falls on the Tualatin River Main Street Tigard

27. Natural Conditions Courtesy May, U of W

28. Developed Conditions Courtesy May, U of W

29. Cedar Mill Creek Watershed, 1984

30. Cedar Mill Creek Watershed, 1990

31. Cedar Mill Creek Watershed, 1994

32. Cedar Mill Creek Watershed, 1997

33. Cedar Mill Creek Watershed, 2002

35. < 10-15% Imperviousness > 15-20% Imperviousness

36. Extrapolated Effective Impervious Area Within the Tualatin Basin Urban Growth Boundary Source: Clean Water Services Healthy Streams Plan

37. Washington Square Courtesy May, U of W

38. Quantifying the Componentsof Impervious SurfacesTilley & Slonecker USGS 2007Studied 6 watersheds across the nation. The largest area class of impervious cover was buildings at 29.1%, followed by roads (28.3%), and parking lots (24.8%).

39. How Trees Manage Stormwater Source: Center for Watershed Protection

40. Challenges of Putting Trees in Parking Lots Photo Source: gratefulmommy.com

41. A complete canopy

42. Sacramento Adopted in 1983, Sacramento’s parking lot ordinance requires 50 percent shading within 15 years of development. Fifteen years after development average parking lot shade was 22%, not 50% as stipulated by ordinance.

43. Source:Managing Stormwater for Urban Sustainability Using Trees and Structural SoilsDay & Dickinson – Virginia Tech

44. http://thoughtreesgrow.blogspot.com/2007/04/trees-and-concrete.htmlhttp://thoughtreesgrow.blogspot.com/2007/04/trees-and-concrete.html

45. Big trees need soil volume The Urban Horticulture Institute at Cornell has found that 2 cu ft of soil is needed for every square foot of crown projection Graph Source: USDA Forest Service Center for Urban Forest Research

46. Soil Volume & Crown DiameterSource: Casey Trees 30 ft Crown 1,000 cu ft Soil 10 ft Crown 100 cu ft Soil 21 ft Crown 500 cu ft Soil

47. Effect of Rooting Volume on Size of Oak Over 2000’ cu. Ft. of rooting volume ~ 450’ cu. Ft. of rooting volume

48. Street Trees & Structural Soil Source: Cornell University – CU Structural Soil - http://www.hort.cornell.edu