Hydrohistorian
DB-118 CASTLE ROCK WELL 7C
Monitored well · 201 · 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
26 measurements from 1993-03-01 to 2026-03-12. Most recent water-level elevation 5685.45 ft, 594.55 ft below ground.
Over the record the level is no trend at -38.54 ft per decade (p = 0.1412, n = 26). 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, 1993-03-01 to 2026-03-12, 26 measurements. The record is no trend at -38.54 feet per decade (p equals 0.1412), 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 | 1324.0 ft |
| Perforated interval | 680.0–1290.0 ft |
| Ground elevation | 6280.0 ft |
| Permit | 31330 |
| Location | 39.36000, -104.85000 |
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.