Hydrohistorian
NHP-PL-060 BOLLWINKLE, WILLIAM & CLAUDIA
Monitored well · 149842 · Division 1 · Water District 49
Its well permit here · Well permit at DWR ↗ · DWR structure record ↗ · Its structure dossier here · Download levels (CSV)
High Plains / Ogallala
Effectively non-recharging in eastern Colorado; declines are storage depletion, a separate ledger line.
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
16 measurements from 2010-02-15 to 2026-03-03. Most recent water-level elevation 3833.6 ft, 227.4 ft below ground.
Over the record the level is no trend at -3.55 ft per decade (p = 0.3444, n = 16). 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, 2010-02-15 to 2026-03-03, 16 measurements. The record is no trend at -3.55 feet per decade (p equals 0.3444), measured on water-level elevation. Rising elevation means more water. The values are downloadable as CSV from the link above.
The well itself
| Aquifer | OGALLALA |
|---|---|
| Designated basin | NORTHERN HIGH PLAINS |
| Total depth | 306.0 ft |
| Perforated interval | 206.0–306.0 ft |
| Ground elevation | 4061.0 ft |
| Permit | 2968 |
| Location | 39.38000, -102.22000 |
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.