Hydrohistorian
BS-15A
Monitored well · 1312 · Division 2 · Water District 10
Alluvial
Stream-connected valley fill; recharges and can be depleted by nearby pumping.
Water-level record
55 measurements from 1970-04-15 to 2026-03-11. Most recent water-level elevation 6106.66 ft, 93.34 ft below ground.
Over the record the level is decreasing at -5.24 ft per decade (p = 0.0332, n = 51). Mann–Kendall with the Hamed–Rao autocorrelation correction, on water-level elevation; rising elevation means more water.
Chart: water level at this well over time, 1970-04-15 to 2026-03-11, 55 measurements. The record is decreasing at -5.24 feet per decade (p equals 0.0332), measured on water-level elevation. Rising elevation means more water. The values are downloadable as CSV from the link above.
The well itself
| Aquifer | QUATERNARY ALLUVIUM |
|---|---|
| Designated basin | UPPER BLACK SQUIRREL |
| Total depth | 120.0 ft |
| Ground elevation | 6200.0 ft |
| Permit | 11799 |
| Location | 38.90000, -104.39000 |
What this page is not
Monitoring records are irregular: measurements cluster where somebody chose to look, so a trend describes this well's record, not the aquifer as a whole. Levels are DWR's published measurements, unedited. A trend here is not a prediction, and it is not a determination about anyone's water right.