Artful Rainwater Design

Transcription

1 Artful Rainwater Design Creative Ways to Manage Stormwater Eliza Pennypacker, Professor of Landscape Architecture, Penn State Stuart Echols, Associate Professor of Landscape Architecture, Penn State

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3 Photo courtesy of Stacy Levy

4 Photo courtesy of Stacy Levy

5 HISTORICAL STORMWATER MANAGEMENT Flood Control Quantity

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7 SHIFT Flood + Pollution Control Quantity Quality

8 Sizing

9 FLOOD MANAGEMENT

10 FLOOD MANAGEMENT Big Fast Centralized

11 RAIN MANAGEMENT

12 RAIN MANAGEMENT Small Slow Dispersed

13 RAIN MANAGEMENT Percent of Total Cumultive Depth Boston Logan Rainfall Record Cumulative Rainfall Depth Percentage Rainfall Depth (in) Capture 2 (1.66 ) Release 1 Hold 1 (.083 )

14 RAIN MANAGEMENT Bioretention Area Needed Capture 2 (1.66 ) Release 1 Hold 1 (.083 )

15 RAIN MANAGEMENT Bioretention Area Needed Bioretention Area Needed Capture 2 (1.66 ) Release 1 Hold 1 (.083 )

16 RAIN MANAGEMENT VARIES post Qp pre Qp FIRST FLUSH VOLUME ToC ToC x 1.67 Capture 2 (1.66 ) Release 1 Hold 1 (.083 )

17 RAIN MANAGEMENT Design paved surfaces as many small drainage areas

18 RAIN MANAGEMENT Flow splitters accept first flush and divert large volumes

19 RAIN MANAGEMENT Flow splitters accept first flush and divert large volumes

20 RAIN MANAGEMENT A set of narrow slits controls water access into the system

21 RAIN MANAGEMENT One type of in-system overflow splitter simply backs up water

22 RAIN MANAGEMENT Overflow splitters can be curb cuts located downhill

23 RAIN MANAGEMENT

24 RAIN MANAGEMENT

25 RAIN MANAGEMENT

26 RAIN MANAGEMENT

27 GREEN INFRASTRUCTURE Design for different stormwater goals and objectives

28 GREEN INFRASTRUCTURE Design with different green infrastructure system types

29 GREEN INFRASTRUCTURE Low Impact Development Approaches (LIDA) Handbook, 2009

30 MOVE TO A NEW NORMAL Amenity Quantity Quality

31 ARTFUL RAINWATER DESIGN

32 ARTFUL RAINWATER DESIGN SUSTAINABLE STORMWATER MANAGEMENT THAT CELEBRATES RAIN

33 ARTFUL RAINWATER DESIGN Photo courtesy of Carol Meyer Reed

34 Photo courtesy of Carol Meyer Reed ARTFUL RAINWATER DESIGN Responds to regulatory demands Manages runoff in responsible ways Uses rainwater as a resource Transforms people s perception of rainwater

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36 Utility Goals: - Reduce pollutant loads - Reduce downstream damage - Safely move, control, contain - Capture rain for reuse - Restore or create habitat Amenity Goals: - Education - Recreation - Safety - Public Relations - Aesthetic Richness

37 Sustainable Stormwater Management Techniques: - Rainwater Trail - Flow Splitter - Rainwater harvesting container - Flow-through filter planter - Dry detention basin - Wet detention basin & constructed wetland - Infiltration basin or trench - Rain garden - Bioswale

38 SOUTHWEST RECREATION CENTER, UFl

39 SOUTHWEST RECREATION CENTER, UFl

40 SOUTHWEST RECREATION CENTER, UFl

41 SOUTHWEST RECREATION CENTER, UFl

42 HIGH POINT, Seattle Slow it down, spread it out, soak it in

43 HIGH POINT, Seattle

44 HIGH POINT, Seattle

45 HIGH POINT, Seattle

46 HIGH POINT, Seattle

47 SHOEMAKER GREEN, University of Pennsylvania

48 SHOEMAKER GREEN, University of Pennsylvania

49 SHOEMAKER GREEN, University of Pennsylvania

50 SHOEMAKER GREEN, University of Pennsylvania

51 SHOEMAKER GREEN, University of Pennsylvania

52 RIDGE & VALLEY, University Park Pennsylvania

53 RIDGE & VALLEY, University Park Pennsylvania

54 RIDGE & VALLEY, University Park Pennsylvania

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56 case studies, publications, presentations, etc.

57 Artful Rainwater Design Creative Ways to Manage Stormwater Eliza Pennypacker, Stuart Echols,

58 TOP TEN YES, BUTs... Yes, but... #1:... that s Portland. We can t do that here! Yes, but... #2:... how do we know it will work?? Yes, but... #3:... it s too expensive! Yes, but... #4:... it freezes here. Yes, but... #5:... maintenance will be an issue.

59 YES, BUT... #1 That s Portland... We can t do that here!

60 YES, BUT... #1 Sewage discharge into the Willamette River

61 YES, BUT... #1 Across the nation, more than 700 other cities have combined sewer overflow problems, largely communities that developed a century or more ago, like much of Portland. Steve Law, Portland Tribune, November 9, 2011

62 YES, BUT... #2... how do we know it will work??

63 YES, BUT... #3 EPA ASLA Natural Resources Defense Council... it s too expensive!

64 YES, BUT... #4... it freezes here.

65 YES, BUT... #4... it freezes here.

66 Swarthmore Science Center M. L. Baird Landscape Architects YES, BUT... #4... it freezes here.

67 YES, BUT... #5... maintenance will be an issue.

68 YES, BUT... #5... maintenance will be an issue.

69 YES, BUT... #5 make it clear & neat! make it robust & neat! engage to invest & to ensure neatness!

70 Artful Rainwater Design Creative Ways to Manage Stormwater Eliza Pennypacker, Professor of Landscape Architecture, Penn State Stuart Echols, Associate Professor of Landscape Architecture, Penn Stae