Hydrohistorian
NHP-WC-019 JOHNSON, CARL
Monitored well · 656 · Division 1 · Water District 65
Its well permit here · Well permit at DWR ↗ · 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
23 measurements from 2001-12-17 to 2026-01-07. Most recent water-level elevation 4704.64 ft, 108.3 ft below ground.
Over the record the level is decreasing at -2.29 ft per decade (p = 0.0075, n = 20). 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, 2001-12-17 to 2026-01-07, 23 measurements. The record is decreasing at -2.29 feet per decade (p equals 0.0075), 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 | 130.0 ft |
| Perforated interval | 110.0–130.0 ft |
| Ground elevation | 4812.94 ft |
| Permit | 234227 |
| Location | 39.82000, -103.22000 |
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.