Rain WaterHarvesting &CondensateRecoveryN e w Tool s forS u s t ai na bl e S i t eD eve l opm entChicagobyTom BarrettGreen...
Green • Water • InfrastructureGreen • Water • InfrastructureGreen • Water • InfrastructureGreen • Water • InfrastructureGr...
Untapped ReservoirUntapped ReservoirUntapped ReservoirUntapped ReservoirUntapped Reservoir
How Much Rain Falls in Chicago?January     -    1.86"   Image of Rain FallingFebruary    -    1.58"March       -    2.59"A...
Thirty Year Average                                                       Monthly Rain Fall                               ...
How Much Water Falls in Chicago?                   2,500 sq. ft. RoofJanuary   - 2,727 gallons         Image of Rain Falli...
How Much Water Falls in Chicago?                   ¼ Acre Residential PropertyJanuary     -    11,880 gallons        Image...
How Much Water Falls in Chicago?                     3 Acre Commercial PropertyJanuary     -     142,560 gallons       Ima...
How Much Water Falls in Chicago?                           City Block                    (660’ x 660’ – 10 acres)January  ...
How Much Water is in Rain Event?                 ¼” Rain     ½” Rain       1” Rain2,500 ft. sq.   390 gallons 779 gallons ...
What can we do with this water?•   Flush Toilets•   Wash Vehicles•   Clean Sidewalks•   Laundry•   Water the    Landscape
How Much Do We Use?                      Daily       Monthly         AnnuallyToilet            -    19 gallons    570     ...
How Much Water Does a Landscape         Need in Chicago?January     -    0.00"February    -    0.00"March       -    0.68"...
Evapotranspiration                                                        (Chicago)                   8                   ...
Precipatation                                                   (Chicago)             8.0             7.0             6.0 ...
ET vs. Precipatation                                                        (Chicgo)                   8                  ...
What is the Problem?                    ET          Rain   DifferenceJanuary     -    0.00"         1.75"         1.75"Feb...
Landscape EcologySize the landscape to the80% of the average rainwater production.– Roof Runoff– Hardscape RunoffBalancing...
Stormwater MitigationStormwater MitigationStormwater MitigationStormwater MitigationStormwater Mitigation
Stormwater Mitigation– Collection runoff near the  source– Slow it down– Soak it in– Filter it– Apply it to the landscape–...
Peak Flow                   (1 Acre Site)                          Grass Field           Roof1 Year Storm                 ...
Peak Flow                  (1 Acre Site)                         Grass Field         Roof1 Year Storm               10.5 g...
Peak Flow                  (1 Acre Site)                         Grass Field          Roof1 Year Storm               630 g...
Peak Flow                (2,500 sq. ft. Roof)                           Grass Field           Roof1 Year Storm            ...
Peak Flow                (2,500 sq. ft. Roof)                          Grass Field         Roof1 Year Storm               ...
Peak Flow                (2,500 ft. sq. Roof)                          Grass Field         Roof1 Year Storm               ...
Change in Peak Runoff Flow             Before and after Development250%200%150%100%50% 0%1 Year Storm 2 Year Storm   10 Ye...
Rain Barrels
Video JugHow to Build a Rainwater Collection System Video      www.Videojub.com
Collection and DispersalCollection Systems– Rain Barrels– Downspout Collection– CisternsDispersal Systems– Rain Gardens– B...
Rain Barrels
Rain Barrels• Collect a small  amount of water  – 50 to 300 gallons• Can be  unattractive• The water must be  used
Downspout Collectors
Downspout CollectorsCaptures 90% of the rainwater
CisternsAbove Ground
CisternsBelow Ground
VideoInstalling a 30,000 gallon  Cistern In Four Minutes
Putting It Together
Control SystemsSensors plus Logic CircuitsCistern Sensors    • High Water        – Disperse the water        – Alarm    • ...
Drip Irrigation Systems    90% Efficiency Rating
Expanding Stormwater Detention   Systems into Stormwater RetentionSmall increase in sizecreates a large increase involume....
CondensationUntapped Reservoir  CondensationUntapped Reservoir  Condensation
HVAC Condensation• ½ gallon per hour per ton  of air conditioning.• 1,000 ton air conditioner  produces 8 gallons of  wate...
HVAC Condensation• ½ gallon per hour per ton  of air conditioning.• One ton of air conditioning  for every 700 sq. ft. of ...
Residential Condensation• 8 to 15 gallons of water  per day.• 60 to 100 gallons per  week.• 250 to 450 gallons per  month.
Commercial Condensation• 15 gallons of water per  minute.• 360 gallons of water per  day.• 2,520 gallons of water per  wee...
Green • Water • InfrastructureGreen • Water • InfrastructureGreen • Water • InfrastructureGreen • Water • InfrastructureGr...
Untapped ReservoirUntapped ReservoirUntapped ReservoirUntapped ReservoirUntapped Reservoir
Questions?                    •   Green Water Infrastructure                         • Strategic Planning                 ...
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Rainwater Harvesting & Condensate Recovery (Chicago 3.1.12)

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Rain water harvesting is a water management that protects, restores, and mimics the natural water cycle. Rainwater harvesting and condensate recovery incorporates both the natural environment and engineered systems to provide clean water, conserve ecosystems, and provide a wide variety of benefits for people and wildlife. Additionally, all this can be accomplished at a significantly lower cost than conventional concrete and mortar infrastructure.

Join Tom Barrett as he explains how the use of locally produced water helps develop a “natural approach” to efficient use of water and relieves stormwater management issues.

Published in: Design, Technology, Business
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Rainwater Harvesting & Condensate Recovery (Chicago 3.1.12)

  1. 1. Rain WaterHarvesting &CondensateRecoveryN e w Tool s forS u s t ai na bl e S i t eD eve l opm entChicagobyTom BarrettGreen Water InfrastructureCopyright © 2010 by TomBarrett
  2. 2. Green • Water • InfrastructureGreen • Water • InfrastructureGreen • Water • InfrastructureGreen • Water • InfrastructureGreen • Water • Infrastructure
  3. 3. Untapped ReservoirUntapped ReservoirUntapped ReservoirUntapped ReservoirUntapped Reservoir
  4. 4. How Much Rain Falls in Chicago?January - 1.86" Image of Rain FallingFebruary - 1.58"March - 2.59"April - 3.28"May - 3.75"June - 4.08"July - 3.39"August - 3.38"September - 2.91"October - 2.65"November - 2.09"December - 1.88"Total 33.44"
  5. 5. Thirty Year Average Monthly Rain Fall Chicago (1971 - 2000) 5.00 4.50 4.00 3.50 3.00Inches 2.50 2.00 1.50 1.00 0.50 0.00 January February March April May June July August September October November December Month Graph of Chicago Rain Fall
  6. 6. How Much Water Falls in Chicago? 2,500 sq. ft. RoofJanuary - 2,727 gallons Image of Rain FallingFebruary - 2,540March - 4,130April - 5,735May - 5,268June - 5,657July - 5,470August - 7,200September - 5,096October - 4,223November - 4,691December - 3,787Total 56,525
  7. 7. How Much Water Falls in Chicago? ¼ Acre Residential PropertyJanuary - 11,880 gallons Image of Rain FallingFebruary - 11,065March - 17,990April - 24,982May - 22,945June - 24,642July - 23,828August - 31,363September - 22,199October - 18,397November - 20,434December - 16,496Total 246,221
  8. 8. How Much Water Falls in Chicago? 3 Acre Commercial PropertyJanuary - 142,560 gallons Image of Rain FallingFebruary - 132,784March - 215,876April - 299,783May - 275,344June - 295,710July - 285,934August - 376,358September - 266,383October - 220,764November - 245,203December - 197,954Total 2,954,654
  9. 9. How Much Water Falls in Chicago? City Block (660’ x 660’ – 10 acres)January - 475,195 gallonsFebruary - 442,610March - 719,581April - 999,267May - 917,805June - 985,690July - 953,105August - 1,254,515September - 887,936October - 735,873November - 817,335December - 659,842Total 9,848,756
  10. 10. How Much Water is in Rain Event? ¼” Rain ½” Rain 1” Rain2,500 ft. sq. 390 gallons 779 gallons 1,558 gallonsRoof¼ Acre 1,697 3,994 67,789ResidentialProperty3 Acre 20,366 40,731 135,770CommercialPropertyChicago City 67,885 135,770 271,540Block
  11. 11. What can we do with this water?• Flush Toilets• Wash Vehicles• Clean Sidewalks• Laundry• Water the Landscape
  12. 12. How Much Do We Use? Daily Monthly AnnuallyToilet - 19 gallons 570 6,840Bathing - 15 450 5,400Laundry - 8 240 2,880Kitchen - 7 210 2,520Housekeeping - 1 30 360Total 50 1,50018,000 The average household uses between 50 and 100 gallons of water per person per day.
  13. 13. How Much Water Does a Landscape Need in Chicago?January - 0.00"February - 0.00"March - 0.68"April - 2.01"May - 3.95"June - 5.89"July - 6.99"August - 6.07"September - 3.87"October - 2.08"November - 0.63"December - 0.00"Total 32.17"
  14. 14. Evapotranspiration (Chicago) 8 7 6 5 4inches Evaportation 3 2 1 0 st il y ry e r r ay ch r ry r be be be r n l be gu Ju Ap a ua M Ju ar nu o m m em Au M ct br ve ce -1 Ja O pt Fe No De Se Month Graph of Chicago Evapotranspiration
  15. 15. Precipatation (Chicago) 8.0 7.0 6.0 5.0inches 4.0 Rain Fall 3.0 2.0 1.0 0.0 t il ly ry ne r r ch ay r ry us r be be be r be Ju Ap a ua M Ju ar g nu o em m em Au M ct br ce Ja O v pt Fe No De Se Month Graph of Chicago Rain Fall & Evapotranspiration
  16. 16. ET vs. Precipatation (Chicgo) 8 6 4 2 Rain Fallinches Evaportation Difference 0 t il y ry e r r ch ay r ry us r be be be r n l be Ju Ap a ua M Ju ar g nu o em m em Au M ct br ce Ja O v pt Fe No De Se -2 -4 -6 Month Graph of Chicago Rain Fall & Evapotranspiration
  17. 17. What is the Problem? ET Rain DifferenceJanuary - 0.00" 1.75" 1.75"February - 0.00" 1.63" 1.63"March - 0.68" 2.65" 1.97"April - 2.01" 3.68" 1.67"May - 3.95" 3.38" -0.57"June - 5.89" 3.63" -2.26"July - 6.99" 3.51" -3.48"August - 6.07" 4.62" -1.45"September - 3.87" 3.27" -0.60"October - 2.08" 2.71" 0.63"November - 0.63" 3.01" 2.38"December - 0.00" 2.43" 2.43"Total 32.17“ 36.27"4.10"
  18. 18. Landscape EcologySize the landscape to the80% of the average rainwater production.– Roof Runoff– Hardscape RunoffBalancing rain water to landscape creates a functional landscape that utilizes the site’s water production.
  19. 19. Stormwater MitigationStormwater MitigationStormwater MitigationStormwater MitigationStormwater Mitigation
  20. 20. Stormwater Mitigation– Collection runoff near the source– Slow it down– Soak it in– Filter it– Apply it to the landscape– Create habitats
  21. 21. Peak Flow (1 Acre Site) Grass Field Roof1 Year Storm 1.4 cfs 4.3 cfs2 Year Storm 2.1 cfs 5.4 cfs10 Year Storm 4.3 cfs 8.0 cfs25 Year Storm 5.7 cfs 9.5 cfs100 Year Storm 8.0 cfs 12.0 cfs cfs – cubic feet per second
  22. 22. Peak Flow (1 Acre Site) Grass Field Roof1 Year Storm 10.5 gps 32.2 gps2 Year Storm 15.7 gps 40.4 gps10 Year Storm 32.2 gps 59.8 gps25 Year Storm 42.6 gps 71.1 gps100 Year Storm 59.8 gps 89.8 gps gps – gallons per second
  23. 23. Peak Flow (1 Acre Site) Grass Field Roof1 Year Storm 630 gpm 1,932 gpm2 Year Storm 942 gpm 2,424 gpm10 Year Storm 1,932 gpm 3,588 gpm25 Year Storm 2,556 gpm 4,266 gpm100 Year Storm 3,588 gpm 5,388 gpm gpm – gallons per minute
  24. 24. Peak Flow (2,500 sq. ft. Roof) Grass Field Roof1 Year Storm 0.08 cfs 0.25 cfs2 Year Storm 0.12 cfs 0.31 cfs10 Year Storm 0.25 cfs 0.46 cfs25 Year Storm 0.33 cfs 0.55 cfs100 Year Storm 0.46 cfs 0.69 cfs cfs – cubic feet per second
  25. 25. Peak Flow (2,500 sq. ft. Roof) Grass Field Roof1 Year Storm 0.60 gps 1.85 gps2 Year Storm 0.90 gps 2.32 gps10 Year Storm 1.85 gps 3.43 gps25 Year Storm 2.44 gps 4.08 gps100 Year Storm 3.43 gps 5.15 gps gps – gallons per second
  26. 26. Peak Flow (2,500 ft. sq. Roof) Grass Field Roof1 Year Storm 36 gpm 111 gpm2 Year Storm 54 gpm 139 gpm10 Year Storm 111 gpm 206 gpm25 Year Storm 147 gpm 245 gpm100 Year Storm 206 gpm 309 gpm gpm – gallons per minute
  27. 27. Change in Peak Runoff Flow Before and after Development250%200%150%100%50% 0%1 Year Storm 2 Year Storm 10 Year 25 Year 100 Year Storm Storm Storm Stormwater Effects of Urbanization
  28. 28. Rain Barrels
  29. 29. Video JugHow to Build a Rainwater Collection System Video www.Videojub.com
  30. 30. Collection and DispersalCollection Systems– Rain Barrels– Downspout Collection– CisternsDispersal Systems– Rain Gardens– Bioswales– Irrigation
  31. 31. Rain Barrels
  32. 32. Rain Barrels• Collect a small amount of water – 50 to 300 gallons• Can be unattractive• The water must be used
  33. 33. Downspout Collectors
  34. 34. Downspout CollectorsCaptures 90% of the rainwater
  35. 35. CisternsAbove Ground
  36. 36. CisternsBelow Ground
  37. 37. VideoInstalling a 30,000 gallon Cistern In Four Minutes
  38. 38. Putting It Together
  39. 39. Control SystemsSensors plus Logic CircuitsCistern Sensors • High Water – Disperse the water – Alarm • Irrigation Water – Reserve for landscape • Household Water – Minimum if household water use • Low Water l – Pump protection Irrigation System • Soil moisture
  40. 40. Drip Irrigation Systems 90% Efficiency Rating
  41. 41. Expanding Stormwater Detention Systems into Stormwater RetentionSmall increase in sizecreates a large increase involume.Small increase in costdelivers a large volume ofwater.Mitigates the ¼” to ½”rainfall events.
  42. 42. CondensationUntapped Reservoir CondensationUntapped Reservoir Condensation
  43. 43. HVAC Condensation• ½ gallon per hour per ton of air conditioning.• 1,000 ton air conditioner produces 8 gallons of water per minute.• Condensation production occurs when the landscape needs the water.
  44. 44. HVAC Condensation• ½ gallon per hour per ton of air conditioning.• One ton of air conditioning for every 700 sq. ft. of floor space.• One ton of air conditioning for every 5,600 cu. ft. of building volume.
  45. 45. Residential Condensation• 8 to 15 gallons of water per day.• 60 to 100 gallons per week.• 250 to 450 gallons per month.
  46. 46. Commercial Condensation• 15 gallons of water per minute.• 360 gallons of water per day.• 2,520 gallons of water per week.• 10,000 gallons of water a month.
  47. 47. Green • Water • InfrastructureGreen • Water • InfrastructureGreen • Water • InfrastructureGreen • Water • InfrastructureGreen • Water • Infrastructure
  48. 48. Untapped ReservoirUntapped ReservoirUntapped ReservoirUntapped ReservoirUntapped Reservoir
  49. 49. Questions? • Green Water Infrastructure • Strategic Planning • Marketing • Coaching • TrainingTom BarrettGreen Water Infrastructure, Inc.P.O. Box 124Westfield, Indiana 46074(317) 674-3494Tom.Barrett@JTBarrett.com

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