Hydrohistorian
LIONS TAIL RANCH LFH-1
Monitored well · 156399 · Division 1 · Water District 8
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 (DWR's code: <NA>). DWR's log page.
Curves digitized from the scan
Hydrohistorian traced the scanned log automatically. 1 curve passed the confidence gate; 26 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 | |
|---|---|---|---|---|---|
| DEEPRESISTIVITY(Ohm-m) (CILD（mmho/m)) | -4–6104 | 67% | not used: ambiguous rows 38%; curve name not recognized: 'DEEPRESISTIVITY(Ohm-m)' | ||
| Deep Resistivity (Ohm-m) | -4–6104 | 83% | 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 91%; curve class not verified by the benchmark: Deep Resistivity traced as solid | ||
| Gamma Ray (GAPI) | -4–6104 | 83% | not used: ambiguous rows 67% | ||
| LTEN (b) | -4–6104 | 8% | 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 8%; ambiguous rows 43%; curve name not recognized: 'LTEN' | ||
| RLL3(Ohm-m) (RILD(Ohm-m）) | -4–6104 | 42% | not used: ambiguous rows 58%; curve name not recognized: 'RLL3(Ohm-m)' | ||
| SNDERRM | -4–6104 | 33% | not used: coverage 34%; ambiguous rows 64%; curve name not recognized: 'SNDERRM' | ||
| SPSHIFT | -4–6104 | 43% | not used: ambiguous rows 64%; curve name not recognized: 'SPSHIFT' | ||
| Shallow Resistivity (Ohm-m) | -4–6104 | 6% | 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 7%; ambiguous rows 15% | ||
| Spontaneous Potential (mV) | -4–6104 | 11% | 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 11%; ambiguous rows 49%; scale OCR confidence 0.68; SP: the printed scale is a span with an unknown offset, and the benchmark could not verify the shape (median r 0.28 after offset removal) | ||
| BITSIZE (in) | -4–6079 | 11% | 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 12%; ambiguous rows 44%; curve name not recognized: 'BITSIZE' | ||
| BOTTEMP | -4–6079 | 18% | not used: coverage 18%; ambiguous rows 12%; curve name not recognized: 'BOTTEMP' | ||
| CASETHCK | -4–6079 | 62% | not used: ambiguous rows 37%; curve name not recognized: 'CASETHCK' | ||
| DPOR (pu) | -4–6079 | 83% | 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 96%; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | -4–6079 | 83% | not used: ambiguous rows 66% | ||
| LINE TENSION (Ib) | -4–6079 | 6% | 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 7%; ambiguous rows 37%; curve name not recognized: 'LINE TENSION' | ||
| RHOC (g/cc) | -4–6079 | 8% | 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 8%; ambiguous rows 24%; curve name not recognized: 'RHOC' | ||
| SNDERRM | -4–6079 | 22% | not used: coverage 23%; ambiguous rows 33%; curve name not recognized: 'SNDERRM' | ||
| SPSHIFT | -4–6079 | 24% | not used: coverage 24%; ambiguous rows 30%; curve name not recognized: 'SPSHIFT' | ||
| dcal (in) | -4–6079 | 6% | 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 7%; ambiguous rows 49%; curve name not recognized: 'dcal' | ||
| Conductivity (mmho/m) | -4–6062 | 3% | 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 4%; ambiguous rows 22% | ||
| Deep Resistivity (Ohm-m) | -4–6062 | 6% | 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 6%; ambiguous rows 16% | ||
| Gamma Ray (GAPI) | -4–6062 | 87% | pass | r 0.99 median, error 0.6% of scale, 7% below r 0.8 (n 411) | LAS |
| LTEN (Ib) | -4–6062 | 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 9%; curve name not recognized: 'LTEN' | ||
| Shallow Resistivity (Ohm-m) | -4–6062 | 87% | 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 91%; curve class not verified by the benchmark: Shallow Resistivity traced as solid | ||
| Shallow Resistivity (Ohm-m) | -4–6062 | 59% | 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 72%; curve class not verified by the benchmark: Shallow Resistivity traced as solid | ||
| Spontaneous Potential (mV) | -4–6062 | 40% | 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); ambiguous rows 5%; SP: the printed scale is a span with an unknown offset, and the benchmark could not verify the shape (median r 0.28 after offset removal) | ||
| RHOC (g/cc) | 2–1764 | 83% | 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 86%; curve name not recognized: 'RHOC' |
"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
| Ground elevation | 6625.0 ft |
|---|---|
| Permit | 87374 |
| Location | 39.25000, -104.93000 |
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.