Hydrohistorian
CIVITAS EASTERN HILLS WB1
Monitored well · 155232 · Division 1 · Water District 2
Its well permit here · Well permit at DWR ↗
Source DWR administrative record · verify at DWR well record ↗ Source DWR administrative record · verify at DWR permit record ↗
Unclassified
No aquifer or designated-basin assignment — administrative world unknown, kept out of recharge math.
Water-level record
No water-level measurements are cached for this well. It is in the well inventory — permit, construction and aquifer below — but nobody has logged a level we hold.
Geophysical log
DWR holds a geophysical log for this well, run 2022-04-11 (gamma, resistivity, porosity). DWR's log page.
Formation picks (DWR)
| Aquifer | Top ft | Base ft | Net sand ft |
|---|---|---|---|
| UPPER ARAPAHOE | 904 | 1063 | |
| LOWER ARAPAHOE | 1152 | 1392 | |
| LARAMIE-FOX HILLS | 1702 | ||
| DENVER | 882 |
Net sand is DWR's own reading of the log (its gLogThickness), not the gross interval.
Net sand per aquifer, from the gamma curve
Computed here from DWR's own digital log (LAS): linear gamma index, clean/shale lines at p10/p90 of the gamma over the interval, sand where Vsh < 0.4, beds under 1.0 ft merged. DWR’s own pick is beside it, never averaged with it.
| Aquifer | Interval ft | Net sand ft | Net / gross | DWR net sand ft | Difference ft |
|---|---|---|---|---|---|
| UPPER ARAPAHOE | 904–1063 | 77 | 0.49 | ||
| LOWER ARAPAHOE | 1152–1392 | 86 | 0.36 |
A gamma cutoff is a convention, not a measurement. Against DWR’s own picks on 50 wells this one correlates at r 0.86 with a median error near 30% and no bias (how it was scored).
Curves digitized from the scan
Hydrohistorian traced the scanned log automatically. 1 curve passed the confidence gate; 22 did not and are listed with the reason. Screening data: the scan stays the record.
| Curve | Interval ft | Coverage | Verdict | Curves like this one scored | |
|---|---|---|---|---|---|
| Conductivity (mmho/m) | 30–2177 | 91% | not used: solid curve on a Phoenix/Pioneer print: only the gamma is verified (its resistivity scales are log/backup scales the parser does not read, benchmark r < 0.5); ambiguous rows 98%; scale OCR confidence 0.68; curve class not verified by the benchmark: Conductivity traced as solid | ||
| Deep Resistivity ((Ohm-m)) | 30–2177 | 85% | not used: ambiguous rows 48%; curve class not verified by the benchmark: Deep Resistivity traced as thin | ||
| Shallow Resistivity ((Ohm-m)) | 30–2177 | 63% | not used: ambiguous rows 21%; curve class not verified by the benchmark: Shallow Resistivity traced as thin | ||
| CASETHCK | -3–2157 | 56% | not used: ambiguous rows 30%; curve name not recognized: 'CASETHCK' | ||
| CORRECTION (g/cc) | -3–2157 | 18% | not used: dashed curve on a Phoenix/Pioneer print: not traceable (benchmark median r 0.38 for the shallow resistivity, 0.00 before the dash/dot split); coverage 19%; ambiguous rows 27%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | -3–2157 | 12% | not used: dashed curve on a Phoenix/Pioneer print: not traceable (benchmark median r 0.38 for the shallow resistivity, 0.00 before the dash/dot split); coverage 13%; ambiguous rows 60%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | -3–2157 | 91% | not used: solid curve on a Phoenix/Pioneer print: only the gamma is verified (its resistivity scales are log/backup scales the parser does not read, benchmark r < 0.5); ambiguous rows 98%; curve name not recognized: 'DPOR' | ||
| FLUIDDEN | -3–2157 | 43% | not used: ambiguous rows 22%; curve name not recognized: 'FLUIDDEN' | ||
| Gamma Ray (GAPI) | -3–2157 | 9% | not used: dashed curve on a Phoenix/Pioneer print: not traceable (benchmark median r 0.38 for the shallow resistivity, 0.00 before the dash/dot split); coverage 10%; ambiguous rows 15% | ||
| LINETENSION (Ib) | -3–2157 | 10% | not used: dashed curve on a Phoenix/Pioneer print: not traceable (benchmark median r 0.38 for the shallow resistivity, 0.00 before the dash/dot split); coverage 10%; ambiguous rows 20%; curve name not recognized: 'LINETENSION' | ||
| SPSHIFT | -3–2157 | 78% | not used: ambiguous rows 41%; curve name not recognized: 'SPSHIFT' | ||
| Sandstone (Sandstone) | -3–2157 | 86% | not used: ambiguous rows 37%; curve name not recognized: 'Sandstone' | ||
| Conductivity（mmho/m) (Conductivity（mmho/m)) | 18–2177 | 75% | not used: ambiguous rows 49%; scale OCR confidence 0.79; curve name not recognized: 'Conductivity（mmho/m)' | ||
| Deep Resistivity ((Ohm-m)) | 18–2177 | 86% | not used: ambiguous rows 50%; curve class not verified by the benchmark: Deep Resistivity traced as thin | ||
| Shallow Resistivity ((Ohm-m)) | 18–2177 | 65% | not used: ambiguous rows 24%; curve class not verified by the benchmark: Shallow Resistivity traced as thin | ||
| ShallowResisitivity(Ohm-m) (DeepResistivity（Ohm-m)) | 18–2177 | 29% | not used: coverage 30%; ambiguous rows 40%; curve name not recognized: 'ShallowResisitivity(Ohm-m)' | ||
| CORRECTION (g/cc) | 45–1758 | 99% | not used: solid curve on a Phoenix/Pioneer print: only the gamma is verified (its resistivity scales are log/backup scales the parser does not read, benchmark r < 0.5); ambiguous rows 48%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 45–1758 | 21% | not used: dashed curve on a Phoenix/Pioneer print: not traceable (benchmark median r 0.38 for the shallow resistivity, 0.00 before the dash/dot split); coverage 22%; ambiguous rows 42%; curve name not recognized: 'DCAL' | ||
| Gamma Ray (GAPI) | 45–1758 | 97% | pass | r 0.99 median, error 0.6% of scale, 7% below r 0.8 (n 411) | LAS |
| Deep Resistivity (Ohm-m) | -2–1767 | 13% | not used: dashed curve on a Phoenix/Pioneer print: not traceable (benchmark median r 0.38 for the shallow resistivity, 0.00 before the dash/dot split); coverage 13%; ambiguous rows 50% | ||
| Line Tension (Ib) | -2–1767 | 99% | not used: solid curve on a Phoenix/Pioneer print: only the gamma is verified (its resistivity scales are log/backup scales the parser does not read, benchmark r < 0.5); ambiguous rows 76%; curve name not recognized: 'Line Tension' | ||
| Shallow Resistivity (Ohm-m) | -2–1767 | 99% | not used: solid curve on a Phoenix/Pioneer print: only the gamma is verified (its resistivity scales are log/backup scales the parser does not read, benchmark r < 0.5); ambiguous rows 42%; curve class not verified by the benchmark: Shallow Resistivity traced as solid | ||
| Shallow Resistivity (Ohm-m) | -2–1767 | 23% | not used: dashed curve on a Phoenix/Pioneer print: not traceable (benchmark median r 0.38 for the shallow resistivity, 0.00 before the dash/dot split); coverage 24%; ambiguous rows 40% |
"Curves like this one" is the benchmark row for this curve's class: curves of the same name traced the same way, scored against DWR's own digital log of the same run. r is correlation (the print's own smoothing allowed for); error is mean absolute error as a share of the track's printed range; "below r 0.8" is the share of passing curves in the class that still disagreed with DWR's log, which this curve's own numbers cannot rule out.
The LAS files and every verdict are in the statewide groundwater release
(/data, table gw_digitized); the MCP server's gw_digitized_curves and
gw_net_sand work from them. How well the tracer does was
measured against DWR's own digital logs.
The well itself
| Total depth | 1850.0 ft |
|---|---|
| Perforated interval | 680.0–1780.0 ft |
| Ground elevation | 5640.0 ft |
| Permit | 63108 |
| Location | 39.70000, -104.68000 |
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.