Castersen Seep
34.09059, -111.46653
Reported this seasonlast reported 11 days ago
Every number here is a base rate from this source’s own report history — how the read is built.
Likely flowing well
As of 2026-10-30 · 30d rain = 12.03″ · nearest historical analogs averaged 0.96 (Raging)
Dry only 9% of the time, and rainfall barely moves it. That decoupling is exactly why it is dependable — it is fed by groundwater, not by last month's weather.
Thin evidence. 11 reports is above the 10 needed for a read, but under 25 the engine flags the evidence as thin. Treat this as weak — suggestive, not solid.
Why this read
How well rain predicts this source
| Window | Raw | Season-controlled | Strength |
|---|---|---|---|
| 180d | +0.89 | +0.38 | |
| 90d | +0.88 | +0.26 | |
| 60d | +0.84 | +0.16 | |
| 30d← | +0.83 | +0.77 | |
| 270d | +0.58 | -0.28 | |
| 365d | +0.38 | -0.34 |
Rain and season are entangled — more reports get filed in cool, wet months. The season-controlled column removes that day-of-year cycle, so it is the trustworthy one. A big gap between the two columns means a correlation was mostly calendar, not rainfall. survives -> genuine rain response
Average flow by month
Dashed = no reports that month, which is not the same as dry.
Report history (11)
- 2026-10-25Raging1.0
- 2026-10-16Raging1.0
- 2026-06-30Dry0.0
- 2026-05-15Trickle0.4Several deep pools filled with good water, trickle going over the falls.
- 2025-12-06Strong0.8Lots of water, including along the feeder creeks.
- 2025-11-28Raging1.0Heavy flow down both creeks feeding into the area, water everywhere.
- 2025-10-16Raging1.0Tons of water flowing down both creeks, plus there was a surprise seep seeping, tasted wonderful.
- 2025-05-24Pools or dripping0.2Less water flowing from pool to pool than in Apr, still enough clear water to scoop around the algae.
- 2025-04-25Moderate0.6Several algea-filled pools directly below the seep, trickling into larger, clear rock tanks that tasted... okay.
- 2018-06-03Pools or dripping0.2Few tanks below still had water, though they were opaque.
- 2017-09-01Pools or dripping0.2Well, the seep proper was dry, but there were tanks downstream that held water.
Nearby
- Big Kahuna Falls - Mazatzal Wilderness0.81 mi19 reports
- Hawaiian Mist1.3 mi17 reports
- Chilson Spring1.4 mi3 reports
- Brody Seep1.6 mi1 report
- Garden Seep1.8 mi4 reports
- Horse Camp Seep2.1 mi3 reports
- Windsor Spring2.3 mi1 report