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Eliza Pennypacker, Professor of Landscape Architecture, Penn State
Stuart Echols, Associate Professor of Landscape Architecture, Penn State
Artful Rainwater DesignCreative Ways to Manage Stormwater
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Quantity
HISTORICAL STORMWATER MANAGEMENT
Flood Control
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Quality
SHIFT
Quantity
Flood + Pollution Control
Sizing
FLOOD MANAGEMENT
Big
Fast
Centralized
FLOOD MANAGEMENT
RAIN MANAGEMENT
Small
Slow
Dispersed
RAIN MANAGEMENT
Boston Logan Rainfall Record 1920 - 1999
Cumulative Rainfall Depth Percentage
0
10
20
30
40
50
60
70
80
90
100
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8
Rainfall Depth (in)
Perc
en
t o
f T
ota
l C
um
ult
ive D
ep
th
Capture 2” (1.66’) Release 1” Hold 1” (.083’)
RAIN MANAGEMENT
RAIN MANAGEMENT
10
65
Bioretention Area Needed
Capture 2” (1.66’) Release 1” Hold 1” (.083’)
RAIN MANAGEMENT
10
65
Bioretention Area Needed
10
65
Bioretention Area Needed
Capture 2” (1.66’) Release 1” Hold 1” (.083’)
RAIN MANAGEMENT
FIRST FLUSHVOLUME
VARIES
ToC
post
Qppre
Qp
ToC x 1.67
Capture 2” (1.66’) Release 1” Hold 1” (.083’)
RAIN MANAGEMENT
Design paved surfaces as many small drainage areas
RAIN MANAGEMENT
Flow splitters accept first flush and divert large volumes
RAIN MANAGEMENT
Flow splitters accept first flush and divert large volumes
RAIN MANAGEMENT
A set of narrow slits controls water access into the system
RAIN MANAGEMENT
One type of in-system overflow splitter simply backs up water
RAIN MANAGEMENT
Overflow splitters can be curb cuts located downhill
RAIN MANAGEMENT
RAIN MANAGEMENT
RAIN MANAGEMENT
RAIN MANAGEMENT
“GREEN INFRASTRUCTURE”
Design for different stormwater goals and objectives
“GREEN INFRASTRUCTURE”
Design with different green infrastructure system types
“GREEN INFRASTRUCTURE”
Low Impact Development Approaches (LIDA) Handbook, 2009
Amenity
MOVE TO A “NEW NORMAL”
Quantity
Quality
ARTFUL RAINWATER DESIGN
ARTFUL RAINWATER DESIGN
SUSTAINABLE STORMWATER MANAGEMENT
THAT CELEBRATES RAIN
Photo
court
esy o
f C
aro
l M
eyer
Reed
ARTFUL RAINWATER DESIGN
ARTFUL RAINWATER DESIGN
• Responds to regulatory demands
• Manages runoff in responsible ways
• Uses rainwater as a resource
• Transforms people’s perception of rainwater
Photo
court
esy o
f C
aro
l M
eyer
Reed
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
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
SOUTHWEST RECREATION CENTER, UFl
SOUTHWEST RECREATION CENTER, UFl
SOUTHWEST RECREATION CENTER, UFl
SOUTHWEST RECREATION CENTER, UFl
Slow it down, spread it out, soak it in
HIGH POINT, Seattle
HIGH POINT, Seattle
HIGH POINT, Seattle
HIGH POINT, Seattle
HIGH POINT, Seattle
SHOEMAKER GREEN, University of Pennsylvania
SHOEMAKER GREEN, University of Pennsylvania
SHOEMAKER GREEN, University of Pennsylvania
SHOEMAKER GREEN, University of Pennsylvania
SHOEMAKER GREEN, University of Pennsylvania
RIDGE & VALLEY, University Park Pennsylvania
RIDGE & VALLEY, University Park Pennsylvania
RIDGE & VALLEY, University Park Pennsylvania
http://artfulrainwaterdesign.psu.edu
case studies, publications, presentations, etc.
Eliza Pennypacker, exp8@psu.edu
Stuart Echols, spe10@psu.edu
Artful Rainwater DesignCreative Ways to Manage Stormwater
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.”
TOP TEN “YES, BUTs . . .”
“YES, BUT . . .” #1
“That’s Portland . . . We can’t do that here!”
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Sewage discharge into the Willamette River
“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
“YES, BUT . . .” #1
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“YES, BUT . . .” #2
“. . . how do we know it will work??”
EPA
ASLA
Natural Resources
Defense Council
“YES, BUT . . .” #3
“. . . it’s too expensive!”
“YES, BUT . . .” #4
“. . . it freezes here.”
“YES, BUT . . .” #4
“. . . it freezes here.”
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“YES, BUT . . .” #4
“. . . it freezes here.”
“YES, BUT . . .” #5
“ . . . maintenance will be an issue.”
“YES, BUT . . .” #5
“ . . . maintenance will be an issue.”
make it clear & neat!
engage to invest & to ensure neatness!
make it robust & neat!
“YES, BUT . . .” #5
Eliza Pennypacker, Professor of Landscape Architecture, Penn State
Stuart Echols, Associate Professor of Landscape Architecture, Penn Stae
Artful Rainwater DesignCreative Ways to Manage Stormwater
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