Hydrohistorian
DB-121 COTTONWOOD D4A
Monitored well · 149804 · Division 1 · Water District 8
Its well permit here · Well permit at DWR ↗ · DWR structure record ↗ · Its structure dossier here · 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
24 measurements from 2001-07-12 to 2022-11-10. Most recent water-level elevation 4500.0 ft, 1370.0 ft below ground.
Over the record the level is no trend at -3.96 ft per decade (p = 0.6914, n = 24). 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, 2001-07-12 to 2022-11-10, 24 measurements. The record is no trend at -3.96 feet per decade (p equals 0.6914), measured on water-level elevation. Rising elevation means more water. The values are downloadable as CSV from the link above.
The well itself
| Aquifer | ARAPAHOE |
|---|---|
| Designated basin | DENVER BASIN |
| Total depth | 1800.0 ft |
| Perforated interval | 1325.0–1690.0 ft |
| Ground elevation | 5870.0 ft |
| Permit | 55267 |
| Location | 39.55000, -104.77000 |
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.