Hydrohistorian
MERIDIAN LFH-6
Monitored well · 152987 · Division 2 · Water District 10
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 2019-09-19 (spontaneous_potential). DWR's log page.
Formation picks (DWR)
| Aquifer | Top ft | Base ft | Net sand ft |
|---|---|---|---|
| DENVER | 390 | 1168 | |
| ARAPAHOE | 1195 | 1730 | |
| LARAMIE-FOX HILLS | 2032 | 2300 | |
| DAWSON | 345 |
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 |
|---|---|---|---|---|---|
| DENVER | 390–1168 | 293 | 0.38 | ||
| ARAPAHOE | 1195–1730 | 225 | 0.42 | ||
| LARAMIE-FOX HILLS | 2032–2300 | 106 | 0.40 |
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. 11 curves passed the confidence gate; 95 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) | 29–319 | 59% | 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 28% | ||
| Deep Resistivity (Ohm-m) | 29–319 | 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 96%; curve class not verified by the benchmark: Deep Resistivity traced as solid | ||
| Shallow Resistivity (Ohm-m) | 29–319 | 94% | 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 class not verified by the benchmark: Shallow Resistivity traced as solid | ||
| Spontaneous Potential (mV) | 29–319 | 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 49%; 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) | ||
| Conductivity (mmho/m) | 350–869 | 41% | 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 25% | ||
| Deep Resistivity (Ohm-m) | 350–869 | 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 88%; curve class not verified by the benchmark: Deep Resistivity traced as solid | ||
| Shallow Resistivity (Ohm-m) | 350–869 | 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 55%; curve class not verified by the benchmark: Shallow Resistivity traced as solid | ||
| Spontaneous Potential (mV) | 350–869 | 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%; 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) | ||
| Conductivity (mmho/m) | 900–1419 | 45% | 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 18% | ||
| Deep Resistivity (Ohm-m) | 900–1419 | 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 85%; curve class not verified by the benchmark: Deep Resistivity traced as solid | ||
| Shallow Resistivity (Ohm-m) | 900–1419 | 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 64%; curve class not verified by the benchmark: Shallow Resistivity traced as solid | ||
| Spontaneous Potential (mV) | 900–1419 | 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 46%; 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) | ||
| Conductivity (mmho/m) | 1450–1969 | 42% | 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 21% | ||
| Deep Resistivity (Ohm-m) | 1450–1969 | 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 82%; curve class not verified by the benchmark: Deep Resistivity traced as solid | ||
| Shallow Resistivity (Ohm-m) | 1450–1969 | 98% | 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 58%; curve class not verified by the benchmark: Shallow Resistivity traced as solid | ||
| Spontaneous Potential (mV) | 1450–1969 | 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 45%; 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) | ||
| Conductivity (mmho/m) | 2000–2514 | 30% | 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 30%; ambiguous rows 25% | ||
| Deep Resistivity (Ohm-m) | 2000–2514 | 77% | 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 class not verified by the benchmark: Deep Resistivity traced as solid | ||
| Shallow Resistivity (Ohm-m) | 2000–2514 | 76% | 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 45%; curve class not verified by the benchmark: Shallow Resistivity traced as solid | ||
| Spontaneous Potential (mV) | 2000–2514 | 82% | 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%; 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) | ||
| Shallow Resistivity (Ohm-m) | 30–235 | 92% | 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 39%; curve class not verified by the benchmark: Shallow Resistivity traced as solid | ||
| Shallow Resistivity (Ohm-m) | 248–455 | 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 34%; curve class not verified by the benchmark: Shallow Resistivity traced as solid | ||
| Shallow Resistivity (Ohm-m) | 498–675 | 97% | 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 46%; curve class not verified by the benchmark: Shallow Resistivity traced as solid | ||
| Shallow Resistivity (Ohm-m) | 698–895 | 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 40%; curve class not verified by the benchmark: Shallow Resistivity traced as solid | ||
| Shallow Resistivity (Ohm-m) | 898–1115 | 100% | 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 50%; curve class not verified by the benchmark: Shallow Resistivity traced as solid | ||
| Shallow Resistivity (Ohm-m) | 1148–1335 | 100% | 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 52%; curve class not verified by the benchmark: Shallow Resistivity traced as solid | ||
| Shallow Resistivity (Ohm-m) | 1348–1555 | 100% | 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 43%; curve class not verified by the benchmark: Shallow Resistivity traced as solid | ||
| Shallow Resistivity (Ohm-m) | 1598–1775 | 100% | 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 47%; curve class not verified by the benchmark: Shallow Resistivity traced as solid | ||
| Shallow Resistivity (Ohm-m) | 1798–1995 | 100% | 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 49%; curve class not verified by the benchmark: Shallow Resistivity traced as solid | ||
| Shallow Resistivity (Ohm-m) | 1998–2215 | 96% | 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 30%; curve class not verified by the benchmark: Shallow Resistivity traced as solid | ||
| Shallow Resistivity (Ohm-m) | 2148–2354 | 94% | 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 34%; curve class not verified by the benchmark: Shallow Resistivity traced as solid | ||
| CORRECTION (g/cc) | 29–339 | 98% | 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 80%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 29–339 | 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 18%; ambiguous rows 53%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 29–339 | 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 97%; scale OCR confidence 0.79; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 29–339 | 99% | not used: ambiguous rows 85% | ||
| CORRECTION (g/cc) | 350–889 | 98% | 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 54%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 350–889 | 36% | 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 36%; ambiguous rows 31%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 350–889 | 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 93%; scale OCR confidence 0.79; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 350–889 | 99% | pass | r 0.99 median, error 0.6% of scale, 7% below r 0.8 (n 411) | LAS |
| CORRECTION (g/cc) | 900–1439 | 98% | 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 28%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 900–1439 | 39% | 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 39%; ambiguous rows 27%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 900–1439 | 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 90%; scale OCR confidence 0.79; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 900–1439 | 98% | pass | r 0.99 median, error 0.6% of scale, 7% below r 0.8 (n 411) | LAS |
| CORRECTION (g/cc) | 1450–1989 | 98% | 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 58%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 1450–1989 | 31% | 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 32%; ambiguous rows 38%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 1450–1989 | 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 94%; scale OCR confidence 0.79; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 1450–1989 | 99% | not used: ambiguous rows 64% | ||
| CORRECTION (g/cc) | 2000–2542 | 77% | 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 68%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 2000–2542 | 24% | 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 25%; ambiguous rows 42%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 2000–2542 | 77% | 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 81%; scale OCR confidence 0.79; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 2000–2542 | 77% | pass | r 0.99 median, error 0.6% of scale, 7% below r 0.8 (n 411) | LAS |
| CORRECTION (g/cc) | 48–263 | 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 38%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 48–263 | 44% | 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 72%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 48–263 | 100% | 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 74%; scale OCR confidence 0.79; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 48–263 | 100% | not used: ambiguous rows 58% | ||
| CORRECTION (g/cc) | 298–483 | 100% | 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 24%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 298–483 | 57% | 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 56%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 298–483 | 100% | 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 68%; scale OCR confidence 0.79; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 298–483 | 100% | not used: ambiguous rows 72% | ||
| CORRECTION (g/cc) | 498–703 | 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 17%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 498–703 | 59% | 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 53%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 498–703 | 100% | 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%; scale OCR confidence 0.79; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 498–703 | 100% | pass | r 0.99 median, error 0.6% of scale, 7% below r 0.8 (n 411) | LAS |
| CORRECTION (g/cc) | 748–923 | 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 39%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 748–923 | 59% | 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 55%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 748–923 | 100% | 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 80%; scale OCR confidence 0.79; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 748–923 | 100% | pass | r 0.99 median, error 0.6% of scale, 7% below r 0.8 (n 411) | LAS |
| CORRECTION (g/cc) | 948–1143 | 100% | 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 25%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 948–1143 | 58% | 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 57%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 948–1143 | 100% | 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 75%; scale OCR confidence 0.79; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 948–1143 | 100% | pass | r 0.99 median, error 0.6% of scale, 7% below r 0.8 (n 411) | LAS |
| CORRECTION (g/cc) | 1148–1364 | 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 14%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 1148–1364 | 56% | 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 55%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 1148–1364 | 100% | 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 74%; scale OCR confidence 0.79; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 1148–1364 | 100% | not used: ambiguous rows 55% | ||
| CORRECTION (g/cc) | 1398–1583 | 98% | 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 10%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 1398–1583 | 57% | 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 55%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 1398–1583 | 100% | 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 74%; scale OCR confidence 0.79; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 1398–1583 | 100% | pass | r 0.99 median, error 0.6% of scale, 7% below r 0.8 (n 411) | LAS |
| CORRECTION (g/cc) | 1598–1803 | 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 29%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 1598–1803 | 53% | 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 56%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 1598–1803 | 100% | 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%; scale OCR confidence 0.79; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 1598–1803 | 100% | pass | r 0.99 median, error 0.6% of scale, 7% below r 0.8 (n 411) | LAS |
| CORRECTION (g/cc) | 1848–2023 | 100% | 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 57%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 1848–2023 | 59% | 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 48%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 1848–2023 | 100% | 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 74%; scale OCR confidence 0.79; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 1848–2023 | 100% | pass | r 0.99 median, error 0.6% of scale, 7% below r 0.8 (n 411) | LAS |
| CORRECTION (g/cc) | 2048–2243 | 100% | 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 33%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 2048–2243 | 53% | 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 59%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 2048–2243 | 100% | 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 52%; scale OCR confidence 0.79; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 2048–2243 | 100% | pass | r 0.99 median, error 0.6% of scale, 7% below r 0.8 (n 411) | LAS |
| CONDUCTIVITY（mmho/m） (CONDUCTIVITY（mmho/m）) | 29–3058 | 89% | not used: ambiguous rows 59%; curve name not recognized: 'CONDUCTIVITY（mmho/m）' | ||
| Deep Resistivity (Ohm-m) | 29–3058 | 15% | 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 16%; ambiguous rows 62% | ||
| Line Tension (Ib) | 29–3058 | 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 23%; ambiguous rows 52%; scale OCR confidence 0.56; curve name not recognized: 'Line Tension' | ||
| Line Tension (Ib) | 29–3058 | 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 68%; scale OCR confidence 0.56; curve name not recognized: 'Line Tension' | ||
| RILD(Ohm-m) (CONDUCTIVITY（mmho/m)) | 29–3058 | 90% | not used: ambiguous rows 82%; scale OCR confidence 0.63; curve name not recognized: 'RILD(Ohm-m)' | ||
| RLL3(Ohm-m） (RLL3(Ohm-m）) | 29–3058 | 30% | not used: coverage 31%; ambiguous rows 15%; curve name not recognized: 'RLL3(Ohm-m）' | ||
| Shallow Resistivity (Ohm-m) | 29–3058 | 22% | 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 23%; ambiguous rows 29%; scale OCR confidence 0.58 | ||
| Shallow Resistivity (Ohm-m) | 29–3058 | 88% | 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 38%; curve class not verified by the benchmark: Shallow Resistivity traced as solid | ||
| Spontaneous Potential (mV) | 29–3058 | 27% | 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 28%; ambiguous rows 30%; 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) | ||
| Spontaneous Potential (mV) | 29–3058 | 89% | 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 39%; 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) | ||
| CORRECTION (g/cc) | 29–10007 | 84% | 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 59%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 29–10007 | 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 42%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 29–10007 | 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 79%; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 29–10007 | 87% | pass | r 0.99 median, error 0.6% of scale, 7% below r 0.8 (n 411) | LAS |
| LINE TENSION (Ib) | 29–10007 | 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 11%; ambiguous rows 49%; curve name not recognized: 'LINE TENSION' |
"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 | 2330.0 ft |
|---|---|
| Perforated interval | 2060.0–2190.0 ft |
| Ground elevation | 6980.0 ft |
| Permit | 82766 |
| Location | 38.98000, -104.57000 |
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.