Quan%fying	  the	  Economic	  Benefits	  of	   Linear	  Parks,	  Trails	  and	  Open	  Space	                February	  201...
Parks	  And	  Trails	  Are	  Good	  Right?	  	  	  	  Yes.	  	  	  But	  its	  becoming	  increasingly	  important	  to	  ...
Case	  Study:	  Houston	  Parks	               Board   	       Bayou	  Greenway	  Ini;a;ve	  
The	  Big	  Ques%on	  If	  a	  community	  invests	  $490	  million	  to	  build	  300	  miles	  of	  trails	  along	  10	...
More	   Kid	  Stuff?    	  
More	  CriMers?  	  
Fewer	   Cars?	  
A	  Cooler	   Cool?  	  
The	  Answer?	  All	  of	  the	  above	  .	  .	  .	  	  and	  more.	  	  But	  how	  do	  you	  prove	  it?	  
Step	  One:	  Think	  Big	  What	  sectors	  of	  the	  local	  economy	  might	  a	  	  trail	  system	  impact	  the	  m...
Step	  Two:	  Dig	  In	  How	  do	  those	  benefits	  break	  down?	  Individual	  Benefits	            Community	  Benefits...
Are	  You	  Sure	  You	  Can	  Quan%fy	  All	                  These	  Things?     	                         Yes.     	   ...
 The	  Bayou	  Greenway	  Ini%a%ve	  	  	  	  	  	  	  	  	  	  	            Trails	  Benefits	  Model                     ...
Here’s	  How	  It	  Works	  •  Most	  benefits	  are	  derived	  from	  the	  number	  of	  individuals	     who	  can	  be...
Basis	  of	  the	  Model                                               	  •  User	  predic;ons,	  the	  key	  to	  es;ma;n...
The	  Bayou	  Greenway	  Map	  
The	  Model’s	  Ameba	  Map	  
The	  Bayou	  Greenway	  Numbers                                        	  So,	  It	  Costs	  $490	  Million	  to	  Constr...
Bayou	  Greenway	  Numbers	                                     	                  By	  Category	  Recreation Benefits    ...
The	  Bayou	  Greenway’s	  BoMom	  Line	  
Here	  Are	  Some	  Factoids	  •  The	  model	  is	  constructed	  to	  calculate	  benefits	  for	  each	     category	  f...
Major	  Metro	  Commute	  Shares	                    And	  Benefits                               	   Now	  Just	  For	  Fu...
Modeling	  Green	  Infrastructure	              Going	  Forward	  
So,	  What	  Else	  Can	  You	  Do	  Once	  You	          Quan%fy	  Green	  Benefits?          	   	   	                   ...
Public	  Engagement…	               	  
Scenario	  Evalua%ons…	               	  
Strategic	  Planning…	  
Grant	  Applica%ons…	             	  
Master	  Planning…	  
You	  Get	  The	  Idea	  The	  benefits	  associated	  with	  linear	  parks,	  trails,	  bikeways,	  and	  greenspace	  ar...
  Q	  and	  A?	           	  Thank	  You!	  
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Modeling the Benefits of Green Infrastructure - A Case Study of Houstons Bayou Greenway Initiative

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Modeling the Benefits of Green Infrastructure - A Case Study of Houstons Bayou Greenway Initiative

  1. 1. Quan%fying  the  Economic  Benefits  of   Linear  Parks,  Trails  and  Open  Space   February  2012  
  2. 2. Parks  And  Trails  Are  Good  Right?        Yes.      But  its  becoming  increasingly  important  to  be  able  to  quan;fy  the  value  of,  or  provide  an  ROI  for,  green  infrastructure.  
  3. 3. Case  Study:  Houston  Parks   Board   Bayou  Greenway  Ini;a;ve  
  4. 4. The  Big  Ques%on  If  a  community  invests  $490  million  to  build  300  miles  of  trails  along  10  bayous,  what    will  they  get  in  return?    What  are  the  benefits?    
  5. 5. More   Kid  Stuff?  
  6. 6. More  CriMers?  
  7. 7. Fewer   Cars?  
  8. 8. A  Cooler   Cool?  
  9. 9. The  Answer?  All  of  the  above  .  .  .    and  more.    But  how  do  you  prove  it?  
  10. 10. Step  One:  Think  Big  What  sectors  of  the  local  economy  might  a    trail  system  impact  the  most?  •  Fiscal    •  Transporta%on  •  Environmental    •  Public  Health    
  11. 11. Step  Two:  Dig  In  How  do  those  benefits  break  down?  Individual  Benefits   Community  Benefits  •  Recrea;on  Costs   •  Air  Quality  •  Health  Care  Cost   •  Carbon  Sequestra;on   Savings   •  Ecosystem  Services  •  Vehicle  Opera;ng   •  Clean  Water   Cost  Savings  •  Crash  Risk  Reduc;on  •  Property  Value   Premiums  
  12. 12. Are  You  Sure  You  Can  Quan%fy  All   These  Things?   Yes.     And  more…  
  13. 13.  The  Bayou  Greenway  Ini%a%ve                       Trails  Benefits  Model  
  14. 14. Here’s  How  It  Works  •  Most  benefits  are  derived  from  the  number  of  individuals   who  can  be  expected  to  use  the  trails  in  some  form  –   cyclists,  hikers,  runners,  walkers,  general  recrea;onal  users,   and  commuters    •  User  counts  are  predicated  on  popula;on  proximity  to  the   park/trail  system  with  1.5  miles  being  the  limit  of  influence    •  Using  popula;on  counts  within  1.5  miles  on  either  side  of   the  park/trail  created  a  3  mile-­‐wide  band  overlaying  the   en;re  system  
  15. 15. Basis  of  the  Model  •  User  predic;ons,  the  key  to  es;ma;ng  impact  and  benefits,   are  based  on  work  developed  in  coopera;on  with  the   Federal  Highway  Administra;on    •  Assump;ons  and  methodologies  have  been  reviewed  and   discussed  with  experts  at  Rice  University,  Texas  A&M,   Baylor  College  of  Medicine,  Harris  County  Flood  Control,   and  Houston-­‐Galveston  Area  Council  (H-­‐GAC)        •  Data  provided  by  H-­‐GAC,  HCAD,  Trust  for  Public  Lands,  U.S.   Army  Corps  of  Engineers,  U.S.  Census  Bureau,  Texas   Transporta;on  Ins;tute,  League  of  American  Bicyclists,   Houston  Parks  Board  
  16. 16. The  Bayou  Greenway  Map  
  17. 17. The  Model’s  Ameba  Map  
  18. 18. The  Bayou  Greenway  Numbers  So,  It  Costs  $490  Million  to  Construct  300  Miles  of  Trails  and  You  Es%mate  that  it  Will  Generate  What…?    Total Annual Benefits Aggregated: Recreation and Health benefit values are projectedat Low, Moderate and High levels based on the number of potential users; VehicleOperating Cost Savings, Crash Reduction, Air Quality, Carbon Sequestration, EcosystemServices, Clean Water and Property Value benefits are held constant. Low Moderate HighBrays Bayou $15,308,931 $17,199,497 $20,710,549Buffalo Bayou $13,878,209 $15,713,039 $19,120,580Clear Creek $8,392,015 $9,278,097 $10,923,679Cypress Creek $15,313,593 $16,953,254 $19,998,337Greens Bayou $9,965,658 $11,044,379 $13,047,717Halls Bayou $8,292,679 $9,156,965 $10,762,067Hunting Bayou $5,369,813 $5,884,420 $6,840,121Sims Bayou $7,546,295 $8,606,832 $10,576,401Spring Creek $12,936,962 $14,180,246 $16,489,203White Oak Bayou $14,740,296 $16,324,877 $19,267,671 $111,750,244 $124,347,400 $147,742,119
  19. 19. Bayou  Greenway  Numbers     By  Category  Recreation Benefits $ 63,209,711Health Benefits $ 13,927,262Vehicle Operating Cost Savings / Congestion Relief $ 3,778,207Crash Reduction $ 280,336Air Quality: VOC, Nox, CO2 $ 140,690Carbon Sequestration $ 5,794EcoSystem Services $ 20,972,475Clean Water $ 390,890Property Value $ 21,642,036Estimated Annual Total (Moderate) $124,347,400
  20. 20. The  Bayou  Greenway’s  BoMom  Line  
  21. 21. Here  Are  Some  Factoids  •  The  model  is  constructed  to  calculate  benefits  for  each   category  for  each  of  70  segments  within  the  10  Bayous   allowing  for  more  detailed  future  analysis  as  needed    •  It  contains  “hot  box”  cells  so  assump;ons  can  be  changed  for   easy  scenario  tes;ng  or  to  update  outdated  data    •  It  is  flexible  and  can  be  calibrated  to  reflect  condi;ons   anywhere    
  22. 22. Major  Metro  Commute  Shares   And  Benefits   Now  Just  For  Fun…  Let’s  Compare  Some  Ci;es   Very  Unscien;fically  City Bicycle Commute Low Moderate High Share (12)Dallas 0.15% $103,818,083 $115,038,240 $127,302,132Houston (As Calculated Above) 0.38% $111,750,244 $124,347,400 $147,742,119Houston (2000) 0.46% $113,297,283 $126,135,230 $152,959,232Atlanta 1.10% $132,867,244 $149,045,144 $205,928,729Chicago 1.15% $135,581,198 $152,253,905 $212,328,580San Antonio / Pittsburg 1.40% $142,040,663 $159,784,167 $230,758,181Denver 1.81% $154,577,669 $174,460,831 $264,691,765Portland 5.81% $276,889,926 $317,647,797 $595,751,120(12) Commute Share Percentages are per the League of American Bicyclists (2009, 70 Largest US Cities).Each .01% (0.0001) increase in commute share generates $329,654 (moderate).
  23. 23. Modeling  Green  Infrastructure   Going  Forward  
  24. 24. So,  What  Else  Can  You  Do  Once  You   Quan%fy  Green  Benefits?       Lots…  
  25. 25. Public  Engagement…    
  26. 26. Scenario  Evalua%ons…    
  27. 27. Strategic  Planning…  
  28. 28. Grant  Applica%ons…    
  29. 29. Master  Planning…  
  30. 30. You  Get  The  Idea  The  benefits  associated  with  linear  parks,  trails,  bikeways,  and  greenspace  are  neither  abstract  nor  rhetorical.    Green  infrastructure  benefits  can  be  quan;fied.    The  benefits  green  infrastructure  provides  individuals  and  communi;es  can  be  drama;c.    And  once  the  benefits  have  been  defined,  they  can  support  green  infrastructure  ini;a;ves  in  a  variety  of  important  ways.  
  31. 31.   Q  and  A?    Thank  You!  

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