Who owns the rain?  Building a collection system.
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Who owns the rain? Building a collection system.



Who owns the rain?

Who owns the rain?

A community comes together to build a rainwater collection system.... then get a variance to keep it.



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  • India and Tuscon http://thinkchangeindia.wordpress.com/2008/06/06/putting-laws-into-practice-the-case-of-rainwater-harvesting/, http://www.awwa.org/Resources/WaterWiserNewsDetail.cfm?ItemNumber=42023 vs Colorado and Utah -http://www.ksl.com/?nid=148&sid=4001252, http://www.rainwatercollecting.com/blog/?p=56-In Bolivia, 2000, a 17 year old boy killed and many injuries as wellhttp://www.foodandwaterwatch.org/water/private-vs-public/corporations/Bechtel
  • These aren’t always the case, but often are. Have the audience populate this list.What is different between the water that falls and the water that runs off?
  • Most images from http://www.appropedia.org/Rainwater
  • http://www.rainwater-harvester.com/sizingyourharvester.htm
  • Here is a spreadsheet for sizing - https://spreadsheets.google.com/ccc?key=0AjTvqXcCy42EcFVhbWxnY2s2VDdjV0lsNzVvbnRVTEE&hl=en
  • Feel free to then multiply by a roof efficiency factor. This rule of thumb gives us 3000 gallons without the efficiency factor and 2400 gallons with the efficiency factor… pretty darn close to 2500 gallons.
  • Someone wants it
  • A partnership
  • Research
  • A student builds it…. Student is found through Appropedia
  • Omar is pursuing a bachelor's degree in environmental resource engineering at HSU, concentrating in water quality issues. Omar is interested in graywater systems for the recycling ability they offer for water, an increasingly limited resource.
  • Steven J. Addison has worked in the environmental conservation field work since he first feel in love with the Klamath River in the mid 90s. As an Environmental Resource Engineering major at Humboldt State University Steven has had a chance to continue his learning and understanding of natural processes, and hopes to one day contribute to writing future policies effecting water use on a national level.
  • http://www.appropedia.org/M_Street_Eureka_rainwater_catchment

Who owns the rain?  Building a collection system. Who owns the rain? Building a collection system. Presentation Transcript

  • Democracy Unlimited Humboldt County Rainwater
    A Case Study in Open Source Community Action for Sustainability
    Lonny Grafman - March 2009
  • who owns the rain?
    • Colorado and Utah - rainwater collection is illegal.
    • Tucson and many parts of India - rainwater collection is mandatory.
    • Bolivia, Year 2000, people injured and killed over water rights.
  • why do it?
    • Water security
    • Less impact on the waste water treatment plant
    • Less impact on often failing sewer systems
    • Water quality
    • Cost
    • Independence
    • Less runoff, less erosion
    • less processing
    • Local groundwater recharge
    • Because it works
  • how does it work?
    • a hole
    • a bucket
    • a bucket, + end use
    • a roof and a barrel, + end use
    • a roof, a filter and a barrel, + end use
    • a roof, a filter, a first flush and a barrel, + end use
  • how does it work?
    • Rainfall data (R in in/time)
    • Footprint of collection surface (F in ft2)
    • Efficiency of collection surface (e ~ .5 to .95)
    • Conversion from ft3 to gal (7.48 gal/ft3)
    • Collection/time = R * 1ft/12in * F * 7.48 gal/ft3 * e
  • how does it work?
    • E.g. a 1900 square foot house with shingle roof
    Mar total = 2.64 in/mo * 1ft/12in * 1900 ft2 * 7.48 gal/ft3 * .8
    Mar total = 2500 gallons for the month
    (station ID #231773)
  • how does it work?
    • Or… rule of thumb without roof efficiency factor
    • .6 gallons for every inch of rainfall on each square foot.
    0.6 gal/(in * square foot)
  • how does it really work?
  • A Client
    Democracy Unlimited Humboldt County
  • Service Learning
  • Research & Design
  • Building
  • End Use
  • The End
    or not…
  • Omar Diaz
  • Steven and Trinity Addison
  • Kaitlin Sopoci-Belknap
  • Tressie Blue Word
  • David Cobb
  • CITY OF EUREKA- General Plan Goals & Policies
    Goal 1.K
    Wherever feasible, the natural terrain, drainage and vegetation of the neighborhood should be preserved with superior examples contained within parks or greenbelts.
    • Neighborhood design should help conserve resources and minimize waste.
    • Neighborhoods should provide for the efficient use of water through the use of natural drainage, drought tolerant landscaping, and recycling.
  • results
    • 1.5 years later
    • Rainwater System - $1,630
    • Variance cost additional - $785
    • Fence cost - $600
    • Variance granted
  • so… what if I think rainwater is collection is stupid?
    • No problem. What sustainability cause do you care about?
    • How do we mobilize your community to address that cause?
    • What tools exist to help?
  • A few tools
    • Wikis
    • Wikipedia.org, appropedia.org, openfarmtech.org
    • Journals
    • Int’l Journal for Service Learning in Engineering
    • Directory of Open Access Journals
    • Communication
    • Asterix, Identi.ca, wordpress.org, joomla.org
    • Productivity Software
    • Openoffice.org, Firefox