1. Average annual rainfall at site
12 inches 2. Longest days without rain at site
5 months3. Do you register your site's rainfall with RainLog.org?
no4. Site elevation (feet above sea level)
2,5005. Can you make your site plan available to ease calculations?
Yes / No
If yes, please note:
Total site area: ________
Total developed area: _________
Area of catchment surfaces (roofs): ______
Square footage of living space: ________6. Please estimate the cost of the Rainwater Harvesting work done on site
Earthworks $0 - home labor.
Greywater $300 for materials, home labor.7. How often do you water your landscape using municipal and/or well water? Please estimate quantity used. 8.
Approximately 5% of exterior landscaping water needs met with municipal water. 100% of interior needs use municipal water.9. What benefits, problems, or lessons have you experienced with your system?
Problems: bathtub greywater siphon system is too inconvenient. The basins need rock lining to prevent them from melting inwards on themselves after one rainy season. Higher water use plants need to be within 30ft of the house. Walking spaces should be 2 ft wide for the storm basins. Storm basins shouldn't be so large, so that vehicles can better park. The site needs more cistern water storage to make it to monsoon without using municipal water. Rainwater in tanks should be run through washing machine before going to plants.10. Who was involved in the development of the features? Designers, consultants, implementers, maintenance folk, vision holders, etc...
Homeowners, Christian Meuli (greywater).11. Description of Site Aesthetic (well-groomed look vs. a naturalized look vs. a homegrown DIY)
The site evinces a strong do-it-yourself aesthetic, emanating from the homeowners' many years spent experimenting on all aspects of rainwater harvesting on site.12. What water harvesting features are present on site?
(o) Rainwater Harvesting
(o) infiltration basins: Basins throughout property, on roadside, in backyard in between combo pathways/swales, and for greywater harvesting.
(o) swales: Swales double as pathways both along roadside and traversing the backyard, from the house, to the chickens, outdoor shower, composting toilet, and bike rack, forming a network.
(o) terraces: Terraces transition from the backyard to the house area, which is approximately two feet lower.
(o) permeable pavement: ____________________________________________
(o) Cistern(s) harvesting water
Additional Notes: exterior use, above ground, used primarily to water the garden
Type: Ferro cement, Dry, Gravity fed Capacity: 1,200 gal. Dimension: 5' x 10' x 5'8" Catchment Surface Type: galvanized steel Surface area (in ft2): ___________13. Greywater Harvesting
For each system below, note:
Type of system: tankless-gravity fed, tank dependent-pump driven, siphon system, other.
Distribution: branched drain, multi-pipe, diverter valves, infiltration chamber.
If, and how, greywater access/diversion/valving is convenient to person at source of greywater generation (such as multi-pipe greywater- and sewer-pipes both located at washer or a diversion valve located beneath a sink
How is greywater beneficially reused on site? (Irrigating perennial vegetation, other))
#1 Outdoor Shower: Permanent setup with 3 drains with 2 covers to control water flow. Siphon from indoor shower. Also hose system thrown over a tree branch as a demonstration.
#1 Washing Machine: multi-pipe supporting perennial food bearing vegetation.
#1 Sink: Branched drain system- supports date palm, mesquite, peach tree, white zapote, orange tree, and a fig tree.
#__ Other: ____________________________________________________________
#__ Other: ____________________________________________________________
Additional notes: Bathtub siphon system inconvenient. Sink diverter valve very accessible. Washing machine invites community - neighbors use it regularly, providing them with local, cheap access to washing facilities while providing Brad with extra water to support his food bearing vegetation.14. Stormwater Harvesting
Note quantity, sizes, stacking of functions (passive irrigation, heat island reduction, flood control, food production, native habitat)
Basins: 9 street side basins, each approximately 27 ft3
. Well vegetated, with native and food bearing vegetation. Provide approximately 20% street shading to fight heat island effect (aim for 50% - your half of the street).
â–¡ Check dams: ________________________________________________________
Swale network: Swales function as sidewalks along the right of way, edging the berms for the streetside basins while keeping water from flowing off property.15. Clearwater Harvesting
(o) air conditioning condensate: none
(o)cooler bleed off: no cooler.
(o) reverse osmosis bleed off harvesting: no16. Dew Condensation Harvesting
Informally - a small quantity of dew condenses on the metal roof.17. On-site "Waste-water" Harvest/Reuse/Reduction
compost toilets: Pit toilet style, double bed. When one bed is full, owner moves the cover (with informal hole) over to the other pit (emptying it first if it holds compost from the prior year). The bed is then covered with dry material to neutralize odor and ward of pests and is left alone to compost. Used by 2 of 3 residents.
(o) sludgehammer septic tank/leech field reuse: no
(o) constructed wetlands note if constructed wetlands are saving or using more on-site water than conventional systems
no18. Inspector Data Sheet
(7.48 gal./ft x A x D)
- Total site area in square feet: 46.2ft x 132ft = 6098.4 ft2
- Total area of catchment surfaces (roofs): _________ ft2
- Total area of catchment surfaces that is harvested: _________ ft2
- Average yearly rainfall: 12 inches
- Volume of rain falling on site in an average year
(7.48 gal./ft x B x D)
- Volume of runoff off catchment in an average year
(7.48 gal./ft x C x D)
- Volume of runoff off catchment that is harvesting in an average year
(H / 365 / # residents)
- Annual water consumption (according to water bill): _______________ gal./ year
- Average water consumption per month (H / 12): ______________ gal./month
- Month of highest water consumption (according to water bill): M ____ #____ gal.
- Average volume of potable water consumed per person per day
: ______________gal. / person / day
19. Estimate the Following with Site Rep
- Square footage of building per person to encourage smaller living space:
748 ft2 / 4 people = 187 ft2 per person.
(1 drop lost if indoor living space exceeds 600 ft2 per person; 2 drops lost if indoor living space exceeds 1,200 ft2 per person)
Percentage of landscape irrigation needs met by non-potable, harvested water: ______
Percentage of greywater reused on site: 95%
Percentage of wastewater reused or treated on site: 100% for 2 residents, 0% for third.Integration of Sustainable Features (Check features which are present)20. Passive heating and cooling
(o) East-West Building Orientation
(o) South-facing windows having good-sized roof overhang or awning ____
(o) Percentage of floor area equaling surface area of south-facing windows (strive for 12 to 15% of floor area) _____________________________
(o) Trees on east, west, north - NOT direct south
(o) What percentage of hardscape is shaded in summer - strive for 75%
§ Approximate percentage - 50%
(o) Other Features? White walls, trellis on the southside with winter deciduous plantings which shade during the summer time but let winter sun through.21. Active on-site renewable energy production
(o) solar hot water
(o) solar power
(o) solar oven22. Community building
(o) shared use with neighbors
(o) is it in view and celebrated
(o) workshops for installation
(o) Other? Ongoing tours, web tour.23. Food production (residential - bonus points to public/business sites)
(o) Vegetable garden irrigated with rainwater: 10-25%
(o) fruit trees irrigated with greywater: 95% rainwater and greywater.
(o) stormwater irrigation of native food-producing trees/shrubs ___________
(o) Domestic animals supported by rainwater: chickens 24. Wildlife habitat/ecosystem enhancement
(o) Minimum 10-15% percentage of site area covered with native (vegetation indigenous to a 25-mile radius and within 500 feet of the site and its elevation) plantings: majority of vegetation onsite is native.25. Erosion control
(o) No signs of erosion problems
§ If present, describe: Minor: rainwater falling from northern roof, from greywater system.26. Flood control
(o) percentage of on-site rainfall used/infiltrated on site: 100%
(o) percentage of road runoff infiltrated in public rights-of-way (ROW): 95%
§ number of shade trees irrigated in ROW with road runoff: 13, 7 indirectly.27. Turning wastes into resources/reusing salvaged materials/on site
(o) caliche paths: used to build up pathways and then covered with soil.
(o) on-site composting: all food scraps fed to chickens.
(o) other: composting toilet and 90% garden fencing structure salvaged.28. Notes on potential Site Improvements
Cistern needs a rainhead screen, gutter the north side, pedestrian platforms smaller size ???, raingutters block too much of the winter sun, cistern storage undersized to maintain garden past April, composting toilet could be more aesthetically pleasing (access point is just a hole), too much erosion on the pathways, needs more reuse of rainwater indoors, bathtub siphon system inconvenient, washing machine greywater system should have access to sewer, greywater outflow points submerged should be airfilled so roots don't enter and clog pipes, or they should exit 3 inches above mulch.Site Rating
1 drop / 2 drops / 3 drops / 4 drops / 5 drops
(awaiting more data)