Hydrohistorian
DB-072 CASTLEMAN
Monitored well · 211 · Division 1 · Water District 8
Its well permit here · Well permit at DWR ↗ · Download levels (CSV)
Denver Basin bedrock
Confined sandstone aquifer; negligible human-timescale recharge — pumping is one-way storage mining.
Because this aquifer does not recharge on a human timescale, a decline here is storage being removed, not a stream being short. It is kept out of the stream-depletion math for that reason.
Water-level record
42 measurements from 1967-07-20 to 2026-02-09. Most recent water-level elevation 5921.21 ft, 218.79 ft below ground.
Over the record the level is decreasing at -20.34 ft per decade (p = 0.0001, n = 42). 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, 1967-07-20 to 2026-02-09, 42 measurements. The record is decreasing at -20.34 feet per decade (p equals 0.0001), measured on water-level elevation. Rising elevation means more water. The values are downloadable as CSV from the link above.
The well itself
| Aquifer | DENVER |
|---|---|
| Designated basin | DENVER BASIN |
| Total depth | 478.0 ft |
| Perforated interval | 218.0–478.0 ft |
| Ground elevation | 6140.0 ft |
| Permit | 31571 |
| Location | 39.37000, -104.94000 |
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.