Live System Data
New system information from our operations below for your experience.
Live Water System Data
Updated continuously from our SCADA and Badger/Beacon metering systems.
Water Delivered
Peak Day
Year over Year
Water Quality
Leak Flow
Rainfall
Avg per Connection
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Water Demand Forecast
Next 3 Days
Next 7 Days
Next 30 Days
Est. Monthly Water Sales
Est. Annual Water Sales
At the current combined base and consumption rate of $30.80 per 1,000 gallons.
The week ahead
| Day | Expected use | Likely range | Temp | Rain |
|---|---|---|---|---|
| Wed, Aug 5 today | 213,649 | 189K – 241K | 66° | — |
| Thu, Aug 6 | 220,048 | 194K – 250K | 69° | — |
| Fri, Aug 7 | 220,846 | 194K – 252K | 68° | — |
| Sat, Aug 8 | 214,845 | 188K – 246K | 65° | — |
| Sun, Aug 9 | 217,130 | 189K – 250K | 64° | — |
| Mon, Aug 10 | 212,652 | 184K – 246K | 64° | — |
| Tue, Aug 11 | 205,971 | 178K – 239K | 64° | — |
What the data shows
Our water year
These figures come from 3,419 days of whole-system meter readings, Jan 1, 2021 to Aug 4, 2026. The busiest day on record used 258,978 gallons on Aug 3, 2023, and the quietest just 48,838 gallons on Nov 26, 2017.
Summer demand runs roughly 1.9 times winter demand — almost entirely irrigation and summer visitors. Year-to-year totals are essentially flat, so what moves the needle is the weather, not the number of homes.
Why it matters
Knowing what demand is likely to do lets EWUA schedule pumping and keep storage topped up before a hot spell rather than during it — which protects both water pressure and fire-flow reserves.
It also shows where conservation counts most. A dry, warm stretch is when the system works hardest, so easing back on irrigation during those runs makes a far bigger difference than the same effort in winter.
How this forecast is calculated
- The model
- A statistical regression fitted in log space, so influences combine proportionally — a hot spell lifts demand by a percentage rather than a fixed number of gallons.
- Season
- A smooth annual curve (three Fourier harmonics of the day of year) rather than month-by-month averages, plus an allowance for the day of the week.
- Weather
- Average temperature, an extra term for heat above 60 °F (irrigation switches on rather than rising smoothly), same-day and three-day rainfall, and how long it has been dry.
- History used
- 1,928 days of actual metered use, weighted by ridge-regularised least squares.
- Weather outlook
- A live forecast for Eastsound covers the first 16 days; beyond that the model uses long-run seasonal norms from the Orcas Island airport weather station.
- The shaded range
- An 80% likelihood band from the model’s own historical error (about ±12.9% a day out), widening further ahead as real weather data gives way to averages.
- Accuracy
- Checked by hiding the most recent 60 days from the model and scoring its predictions against them. It currently lands within 6.5% of actual use on average.
- Worth knowing
- The next few days are the most dependable because they use real forecast weather. The 30-day figure leans on seasonal norms, so read it as a planning range rather than a promise.
Projected system-wide water use, updated several times a day. The forecast combines the season, the day of the week, and the local weather outlook for Eastsound — warm, dry stretches push demand up; rain brings it down. Recent accuracy is within 6.5% of actual use on average. Figures are whole-system totals; the shaded range is the likely spread rather than a guarantee.
Updated Aug 5, 2026 11:45 pm
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