The Dirty Truth About Water (02 10-2014)
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The Dirty Truth About Water (02 10-2014)

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Green infrastructure combines existing gray infrastructure with new green infrastructure, old technology with new technology, taking on a natural approach to mitigating stormwater. ...

Green infrastructure combines existing gray infrastructure with new green infrastructure, old technology with new technology, taking on a natural approach to mitigating stormwater.

Green Infrastructure is...
It’s Green – more natural, mimicking nature
It’s Clean – more complete filtration
It’s Lean – less expensive
The Future – incorporates the latest in scientific thinking

This presentation illustrates how by taking a watershed approach to stormwater mitigation will save money and create a sustainable environment.

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The Dirty Truth About Water (02 10-2014) Presentation Transcript

  • 1. The Dirty Truth About Water By Tom Barrett Green Water Infrastructure, Inc. www.ThinkGWI.com Tom.Barrett@ThinkGWI.com Follow us on Twitter @TomBarrett_GWI © 2014 Tom Barrett
  • 2. Green • Water • Infrastructure Green • Water • Infrastructure Green • Water • Infrastructure Green • Water • Infrastructure Green • Water • Infrastructure
  • 3. Green• Infrastructure It’s Green – more natural, mimicking nature It’s Clean – more complete filtration It’s Lean – less expensive The Future – incorporates the latest in scientific thinking
  • 4. In nature there is no good or bad; there are only consequences.
  • 5. Pre-Development Water Cycle
  • 6. How Much Rain Falls in Fairfield? January February March April May June July August September October November December Total - 1.50" - 1.23" - 2.40" - 3.21" - 3.93" - 5.06" - 3.42" - 3.77" - 3.15" - 2.44" - 1.95" - 1.55" 33.61" Image of Rain Falling
  • 7. How Much Water Falls in Fairfield? 2,500 sq. ft. Roof January - 2,338 gallons February - 1,917 March - 3,740 April - 5,003 May - 6,125 June - 7,886 July - 5,330 August - 5,875 September - 4,909 October - 3,803 November - 3,039 December - 2,431 Total 52,394 Image of Rain Falling
  • 8. How Much Water Falls in Fairfield? ¼ Acre Residential Property January February March April May June July August September October November December Total - 10,183 gallons 8,350 16,292 21,791 26,679 34,350 23,217 25,593 21,384 16,564 13,238 10,590 248,229 Image of Rain Falling
  • 9. How Much Water Falls in Fairfield? 3 Acre Commercial Property January February March April May June July August September October November December Total - 122,193 gallons 100,198 195,509 261,493 320,146 412,198 278,600 307,112 256,605 198,767 158,851 127,081 2,738,752 Image of Rain Falling
  • 10. How Much Water Falls in Fairfield? City Block (330’ x 330’ –5acres) January February March April May June July August September October November December Total - 203,655 gallons 166,997 325,848 435,822 533,576 686,996 464,333 511,853 427,676 331,279 264,752 211,801 4,564,587
  • 11. How Much Water is in Rain Event? ¼” Rain 2,500 ft. sq. Roof ½” Rain 390 gallons 779 gallons 1” Rain 1,558 gallons ¼ Acre Residential Property 1,697 3,994 6,788 3 Acre Commercial Property 20,366 40,731 81,462 Fairfield City Block 33,942 67,885 135,770
  • 12. How Much Water Falls Fairfield, Iowa? 1” Rainfall on 2,300 Acres = 62,454,200gallons
  • 13. How Much Water Falls in Jefferson County? 1” Rainfall on 437 Square Miles (279,680 acres) 7,594,430,720Gallons (7.6 billion)
  • 14. Stormwater Mitigation Stormwater Mitigation Stormwater Mitigation Stormwater Mitigation Stormwater Mitigation
  • 15. Change in Peak Runoff Flow Before and after Development 250% 200% 150% 100% 50% 0% 1 Year Storm 2 Year Storm 10 Year Storm 25 Year Storm 100 Year Storm Stormwater Effects of Urbanization
  • 16. Peak Flow (2,500 sq. ft. Roof) Grass Field Roof 1 Year Storm 0.08 cfs 0.25 cfs 2 Year Storm 0.12 cfs 0.31 cfs 10 Year Storm 25 Year Storm 0.25 cfs 0.33 cfs 0.46 cfs 0.55 cfs 100 Year Storm 0.46 cfs 0.69 cfs cfs – cubic feet per second
  • 17. Peak Flow (2,500 ft. sq. Roof) Grass Field Roof 1 Year Storm 36 gpm 111 gpm 2 Year Storm 54 gpm 139 gpm 10 Year Storm 111 gpm 206 gpm 25 Year Storm 147 gpm 245 gpm 100 Year Storm 206 gpm 309 gpm gpm – gallons per minute
  • 18. Peak Flow (1 Acre Site) Grass Field Roof 1 Year Storm 1.4 cfs 4.3 cfs 2 Year Storm 2.1 cfs 5.4 cfs 10 Year Storm 25 Year Storm 4.3 cfs 5.7 cfs 8.0 cfs 9.5 cfs 100 Year Storm 8.0 cfs 12.0 cfs cfs – cubic feet per second
  • 19. Peak Flow (1 Acre Site) Grass Field Roof 1 Year Storm 630 gpm 1,932 gpm 2 Year Storm 942 gpm 2,424 gpm 10 Year Storm 1,932 gpm 3,588 gpm 25 Year Storm 2,556 gpm 4,266 gpm 100 Year Storm 3,588 gpm 5,388 gpm gpm – gallons per minute
  • 20. • Image of Rain Falling
  • 21. • Atrazine, Nitrogen, Phosphorous Pesticide Issues
  • 22. Atrizene
  • 23. Low Impact Site Development
  • 24. Stormwater Mitigation – Collection runoff near the source – Slow it down – Soak it in – Filter it – Apply it to the landscape – Create habitats
  • 25. Green• Infrastructure It’s Green – more natural, mimicking nature It’s Clean – more complete filtration It’s Lean – less expensive The Future – incorporates the latest in scientific thinking
  • 26. Watershed Approach Watershed Approach Watershed Approach Watershed Approach Watershed Approach
  • 27. Windridge Ravine Comprehensive Drainage Study
  • 28. • Site Inspection
  • 29. 1. Evaluate the Watershed Basins
  • 30. 2. Complete an on-site evaluation
  • 31. 3. Identify problems
  • 32. 4. Identify potential solutions
  • 33. 7. Prioritize Solutions
  • 34. Green• Infrastructure It’s Green – more natural, mimicking nature It’s Clean – more complete filtration It’s Lean – less expensive The Future – incorporates the latest in scientific thinking
  • 35. It is not the strongest of the species that survives, nor the most intelligent, but the one most responsive to change. - Charles Darwin