From Drizzle to Downpours: GCD Rainwater Harvesting Programs - Adeline Fox & Jill Garcia
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From Drizzle to Downpours: GCD Rainwater Harvesting Programs - Adeline Fox & Jill Garcia
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From Drizzle to Downpours: GCD Rainwater Harvesting Programs - Adeline Fox & Jill Garcia
- 1. From Drizzle to Downpours: GCD Rainwater Harvesting Programs Adeline Fox – Texas Water Conservation Association Jill Garcia – Upper Trinity Groundwater District
- 2. Outline Harvesting Basics & Considerations GCD Rainwater Harvesting Projects Harvesting Education Resources Building/Maintaining your own program as a GCD
- 3. Harvesting Basics & Considerations
- 4. Rainwater Harvesting Basics/Calculators Intended use & financial commitment dictate design & function. Available resources = initial storage volume + gallons captured – gallons used. Water audit of property/business allows user to quantify savings. Storage capacity impacted by available space on property/site. Rainfall x catchment surface x .62 x system efficiency = __________
- 5. System Components Catchment Surface (land or structure) Gutters and Downspouts Leaf screens, first flush diverters, and roof washers Storage Tanks/Cisterns Delivery Systems (gravity based or pump) Treatment & Filtration
- 6. Catchment Surfaces Galvanized Metal (~95% efficiency) (Zn leaching potential) Clay/Concrete Tile (~85% efficiency) (porous absorption) Composite/Asphalt Shingles (Popular) (~85% efficiency) (High alkalinity potential) Wood (barn roofs, verify if fire retardants are present). Solar Panels (worth testing caught water but viable surface) Roof Coatings (elastomeric paints) (high efficiency) This Photo by Unknown Author is licensed under CC BY-ND
- 7. Cistern Materials Fiberglass Polypropylene Wood Galvanized sheet metal Concrete Ferrocement In-ground polypropylene
- 8. Filtration & Treatment • Consider your transport plan and distribution outlets (hose or drip emitters) • Roof washing diverts around 10 gallons per 1,000 gallons to reduce debris • Sediment filters (1, 5 microns) reduce damage and buildup on drip emitters Non-Potable Systems • Human consumption/exposure means additional financial investment • Filtration + Disinfection cuts down on pathogens and biota • Popular system: 5-micron filter + 3-micron charcoal cartridge filter + UV Filtration • Disinfection after pressure tank and pump in system, all should be stored in a pump house or away from the elements to avoid damage. • Maintenance of systems: replacement of cartridges Potable Systems
- 9. A.U.A. (Ask us Anything) with a Rainwater Harvesting Contractor What questions do your staff receive the most about harvesting systems from potential clients? “Does it rain enough in Texas to sustain a system?” Yes, it does. Opinions on flush diverters and roof washers? We only use first flush diverters in potable systems. It’s not needed for irrigation or animal use. Most popular tank ordered by clients? The metal Pioneer water tanks are the most popular. Component of systems requires the most maintenance and upkeep? The ultraviolet system for potable systems, filters need to be changed once a year. Make sure your screen filters are clean of debris on downspouts and the tank, and make sure your gutters stay clear of debris. Most popular filtration system clients purchase? For non potable systems we recommend leaf eaters at each downspout and a post pump inline banjo filter. Yes, for potable systems they get the Viqua Ultraviolet purification unit. Anything y’all as rainwater contractors would like to share with groundwater districts? We are only capturing rainwater temporarily and will be putting it back into the soil and ultimately aquifers.
- 11. Prairielands GCD
- 14. Lonestar GCD
- 16. Rebates, Loans & Cost Sharing Post Oak Savannah GCD (Rebate Program) Rebate available after approved schematic and completed rainwater harvesting course through GCD. Maximum lifetime reimbursement: $3,000.00 Panhandle GCD (Rebate & Loan Program) Based on project capacity (< or > 2,000 gallons) Loans available, 10% of total system due upfront, five-year payback @ 2% interest. Upper Trinity GCD (Cost Sharing & Grant Program) Available upon selection through district grant application process and interview – cost sharing abilities impact quantitative rubric score. Amounts available dependent upon fiscal year
- 22. Training & Education State Agencies (TWDB) GCD’s Agrilife Extension Offices Master Gardeners’ Master Naturalists' Regional Water Utilities Cities & Municipalities
- 23. Cow Creek GCD
- 24. In-House Technical Consultations – Upper Trinity/ Post Oak Savannah Interested landowners schedule appointments through website and chat service. Consultations were handled by education staff and met with landowners at their property or facilities or reviewed plans after appropriate classes are completed. Staff identified the intended use of rainwater, what catchment surfaces the landowner wanted to catch utilize, and storage options. Staff assisted with the following steps: Calculating area of catchment surfaces & potential volumes Measuring lines of transport depending on wet/dry conveyance systems Directing landowners to prices of filtration and storage tank options; as well as ARCSA certified contractors in the area Emailing bulk data to landowner/organization at the end of the visit
- 25. Building/Maintaining Rainwater Harvesting Programs as a GCD This Photo by Unknown Author is licensed under CC BY-SA
- 26. Choosing a RWH Program for your GCD Consider primary groundwater users to determine who would benefit from rainwater harvesting. Varies by county & geographic area Domestic Users - potential for shed and roof catchment. Agriculture & Livestock Users – barn catchment surfaces Identify benefits to users Financial, Cultural Provide a resource to interested parties (does not have to be monetary) Educational Resources Classes Funding
- 27. RWH Program for your GCD – Resources & Program Ideas Share online resources to train staff in content and practices ARCSA – American Rainwater Catchment Systems of America Texas based companies (installers, designers, contractors) Resource guide through website https://arcsaresource.com/ Create GCD specific publications on RWH that highlight local citizens with established systems as community partners Host rainwater harvesting tours of residential and commercial systems in your district Host outreach events at community centers or district office Partner with others in the community to alleviate costs of classes and materials
- 28. Questions? Adeline Fox Texas Water Conservation Association afox@twca.org; (512) 472-7216 Jill Garcia Upper Trinity Groundwater Conservation District jill@uppertrinitygcd.com; (817)523-5200
Notes de l'éditeur
- Include City of Pflugerville’s past win for the Raincatcher of the year Award In an effort to promote water conservation, the City of Pflugerville Public Works Department hosted their first Rain Barrel Sale in 2013 allowing residents to purchase affordable rain barrels for rainwater harvesting. The department sold 393 barrels to the local community. To promote the event, the city placed brochures in public locations and in city offices and advertisements in local newsletters. City staff also made a presentation at a city council meeting prior to the event. The city has received positive feedback on the program. Also, during an expansion of the city library in 2013, the city installed a 4,900-gallon galvanized steel tank to collect water from the roof of the library for a fountain in the garden. The aim was to educate the residents on water conservation and to get them interested in and to consider rainwater harvesting for their own homes. (my parents were one of the first purchasers of these rain barrels in P-ville during this event. They lived there until about two years ago, unfortunately this event happened while I was away at Tarleton. )
- Category: Community Organization Location: Kerrville, Texas Activity:Harvested rain is stored in two 65,000-gallon galvanized storage tanks and used onsite for various non-potable water needs. Background: The Hill Country Youth Event Center Complex in Kerrville opened in December 2012 and hosts as many as 30,000 visitors a year at numerous community events. Kerr County Commissioners faced a high water use dilemma when the new complex was built and chose rainwater harvesting as the solution. Funded by a county bond election and designed and installed by Mr. Barry Wall of Ingram, the system funnels rainwater from both the main exhibit hall and the west side of the adjacent arena into two 65,000-gallon galvanized storage tanks fitted with food-grade liners. The collection system provides all the water for the 45 indoor and 18 outdoor livestock wash bays and for all the toilets and urinals in the exhibit hall. The water is also used for dust control in the indoor arena and to irrigate the event center’s native Texas landscaping. By harvesting the rainwater, localized flooding, erosion, and runoff into the Guadalupe River are reduced. The system is backed-up by the City of Kerrville’s water supply, but rainwater has supplied all needs to date.
- https://www.bluebarrelsystems.com/blog/roofing-materials-for-rainwater-harvesting/ https://www.harvesth2o.com/capture-system.shtml#:~:text=Multiply%20the%20Maximum%20Annual%20Gallons,of%20Available%20Annual%20Harvestable%20Rainwater. For a tile/metal roof assume a 95% runoff efficiency For a concrete/asphalt roof assume a 95% runoff efficiency For a gravel roof assume a 70% runoff efficiency For a bare soil roof assume a 75% runoff efficiency For a grass roof assume a 17% runoff efficiency Zinc can also be used as a herbicide so treating from galvanized metal roofs is paramount if being used for irrigation. https://www.bluebarrelsystems.com/blog/roofing-materials-for-rainwater-harvesting/ https://info.nsf.org/Certified/Protocols/Listings.asp?TradeName=&Standard=P151
- Advantages (Fiberglass) Can be an economical storage solution for water Aesethically pleasing option since surface can be easily be painted whatever color or even with a mural Can be manufactured individually for your system needs Provides strength and durability for years of reliable performance Can be food grade, NSF approved for drinking water storage Offers best protection against environmental damage due to fiberglass stability Disadvantages: (Fiberglass) Outer surfaces of fiberglass tank can degrade with UV exposure Must be delivered to site and craned into place so ample access to cistern location must be available Manufacturing and distribution of fiberglass tanks can be localized, meaning they may be difficult to find in your area or costly to ship from their manufacturing facilities If you desire a large rainwater storage volume, you would have to use multiple fiberglass tanks which could end up wasting space. Think about a round peg going into a square or a rectangle. https://www.watercache.com/portfolio/aboveground-fiberglass-cisterns https://www.ntotank.com/catalogsearch/result/?q=polypropylene (for propylene prices)
- Lots of words no pics fix
- Will make a point to say these are just several of many successful projects and just because we didn’t cover a specific GCD does not mean they’re not doing meaningful and impactful outreach in their respective communities.
- 2 cisterns and rain garden – captures about 80,000 gallons/year Water education trailer covers several rainwater harvesting programs/concepts 2022 TWDB Raincatcher Award Winner Calling Michael with prairielands today 5/26 to ask a little more about how the system came into being for backup talking points Similar set up to Lonestar, wanted one to promote rainwater harvesting , using for drip irrigation for local plant life Another cistern at the back of the property with a different company out of Mansfield, TX. (rainwater company) First company through a contractor for the work but second addition was a rainwater harvesting company. Back system holds up to how many gallons, (first system put in 2020, back system put in 2022). Back system leads into a rain garden – to showcase native plants, Michael looking up total volume. Budget available and wanted to make a teaching location at the office site, especially for the classes they host for rainwater harvesting at the office. Rain Ranchers did the back-end system, and modified the front system, regular maintenance. Two galvanized metal tanks in the back, just got a carport awning and capturing rainwater from the awning structure. ______________ .
- https://spuwcd.org/wp-content/uploads/2020/04/Rainwater_Harv_Projects.pdf Installed the system at the office in 2014 Demonstrations, cost-sharing projects, and educational information RWH workshops – giving away rain barrels and rain chains
- https://www.hpwd.org/rainwaterharvesting Rain garden and permeable parking spots at office Cost-shared projects through grant program – Preston Smith Elementary and Wollforth City Library Education programs and information online
- Partnered with Leadership Montgomery County Class of 2014 selected a RWH project Utilized a sponsorship tier to pay for the installs Have a demo in their education trailer too
- https://www.pgcd.us/rainwater-harvesting https://posgcd.org/rainwater/ Will have printouts for additional resources on these groups
- Include logos for san antonio river authority, nueces, Tarrant regional water
- 15 RWH demonstrations – one at every public school in three counties System sizes range from 50 – 3000 gallons Collected rainwater used to irrigate landscape Partnership to conduct education programs at schools https://nueces-ra.org/education/ This miniature barn is equipped with gutters and a rain water collection system calibrated to show how much water can be collected by a simple system. It is an engaging tool delivered along with video presentations by Billy Kniffin, one of Texas’s leaders in rainwater harvesting.
- San Antonio River Authority Green Stormwater Best Management Practices to help with polluted runoff – cisterns drain to rain garden - 2,500 gallons to 10,000 capacity Watershed Wise School Grant and Rebate program as a way to educate students and incentivize the development community. SARA has also partnered with the City on an Low Impact Development (LID) Bond Match program, funding half of the added cost to incorporate LID/Green Stormwater Infrastructure (GSI) in City Bond Projects.
- 7,500 gallon capacity Built in 2008, the new annex building was designed for sustainability and meets LEED Gold standards from the U.S. Green Building Council. In addition to collecting rainwater, water-efficient landscaping, storm water retention and energy efficiency is incorporated in the design. Also, solar panels produce energy from the roof. Staff provides tours of the campus to educate the public and developers by talking about the “Rainscapes” and the many options for green infrastructure, recommended plants, rainwater harvesting, etc. Staff also has various public education and outreach classes, workshops and handouts on rainwater harvesting, building your own 50 gallon rain barrel, etc.
- https://www.arcsa.org/store/ViewProduct.aspx?id=8867679 https://www.twdb.texas.gov/innovativewater/rainwater/training/index.asp https://mastergardener.tamu.edu/master-gardener-specialist/rainwater-harvesting-specialist/ http://wood.agrilife.org/files/2011/03/2013-Wood-County-Rainwater-Harvesting-Result-Demo-Report.pdf
- https://ccgcd.org/education/videos/ Extensive educational videos covering residential installation, rw for irrigation Collecting greywater and condensation
- https://www.arcsa.org/store/ViewProduct.aspx?id=8867679 https://www.twdb.texas.gov/innovativewater/rainwater/training/index.asp it would be cool if TAGD was able to provide a discount for gcd members looking to learn more about RW Post oak savannah has a similar approval program through their rebate, landowners submit plans to the district for their systems to receive compensation, and there’s a max limit on compensation per gallon/per roof area.
- Requested a thunderstorm pic from one of our field staff who’s a photographer.
- financial partnerships can alleviate the costs of classes and materials. Home inspectors Title Agents Gutter Repair Plumbing Drilling Companies Realtors and agencies
- Financial partnerships can alleviate the costs of classes and materials. Home inspectors Title Agents Gutter Repair Plumbing Drilling Companies Realtors and agencies
- We can include our contact information?