Observed arrival · 2026-10-14
The Downspout: Sonoma County water, plainly explained
A local guide to Sonoma County water rules and conditions, covering rain capture, wells, graywater, stormwater, rivers and water supply.
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- For
- Sonoma County residents, well owners, and land stewards
- Worth noticing
- The rain-catch calculator starts with Santa Rosa’s 31.5 inches of annual rain and adjusts for ZIP code, roof size, and capture efficiency.
Field notes
The calculator lets visitors vary capture efficiency from 70% to 90%, with 80% labeled typical, and gives an annual gallon estimate. Practical articles also distinguish when to sink runoff into soil from when to route it away, and provide local contact details such as Sonoma RCD's phone number for creek-sediment guidance.
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
◉HumanPersonal, local, civic, or handmade
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