Hydrohistorian
INDEPENDENCE DE-4
Monitored well · 157489 · 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 2023-10-14 (gamma, resistivity, spontaneous_potential). DWR's log page.
Curves digitized from the scan
Hydrohistorian traced the scanned log automatically. 3 curves passed the confidence gate; 48 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 | |
|---|---|---|---|---|---|
| CNPOR (pu) | 944–1129 | 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 71%; curve name not recognized: 'CNPOR' | ||
| CORRECTION (g/cc) | 944–1129 | 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 56%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 944–1129 | 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 32%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 944–1129 | 0% | 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 0%; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 944–1129 | 97% | not used: ambiguous rows 58% | ||
| LINE TENSION (Ib) | 944–1129 | 0% | 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 0%; curve name not recognized: 'LINE TENSION' | ||
| CNPOR (pu) | 1150–1679 | 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: 'CNPOR' | ||
| CORRECTION (g/cc) | 1150–1679 | 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 68%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 1150–1679 | 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 34%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 1150–1679 | 0% | 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 0%; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 1150–1679 | 99% | not used: ambiguous rows 50% | ||
| LINE TENSION (Ib) | 1150–1679 | 1% | 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 1%; curve name not recognized: 'LINE TENSION' | ||
| CNPOR (pu) | 1700–2228 | 69% | 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 95%; curve name not recognized: 'CNPOR' | ||
| CORRECTION (g/cc) | 1700–2228 | 68% | 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: 'CORRECTION' | ||
| DCAL (in) | 1700–2228 | 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 22%; ambiguous rows 18%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 1700–2228 | 2% | 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 2%; ambiguous rows 33%; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 1700–2228 | 72% | not used: ambiguous rows 65% | ||
| LINE TENSION (Ib) | 1700–2228 | 4% | 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 26%; curve name not recognized: 'LINE TENSION' | ||
| CNPOR (pu) | 998–1173 | 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 77%; curve name not recognized: 'CNPOR' | ||
| CORRECTION (g/cc) | 998–1173 | 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 65%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 998–1173 | 33% | 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 34%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 998–1173 | 0% | 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 0%; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 998–1173 | 100% | pass | r 0.99 median, error 0.6% of scale, 7% below r 0.8 (n 411) | LAS |
| LINE TENSION (Ib) | 998–1173 | 0% | 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 0%; curve name not recognized: 'LINE TENSION' | ||
| CNPOR (pu) | 1198–1393 | 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 84%; curve name not recognized: 'CNPOR' | ||
| CORRECTION (g/cc) | 1198–1393 | 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 67%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 1198–1393 | 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 10%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 1198–1393 | 0% | 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 0%; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 1198–1393 | 100% | pass | r 0.99 median, error 0.6% of scale, 7% below r 0.8 (n 411) | LAS |
| LINE TENSION (Ib) | 1198–1393 | 2% | 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 2%; curve name not recognized: 'LINE TENSION' | ||
| CNPOR (pu) | 1398–1614 | 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 87%; curve name not recognized: 'CNPOR' | ||
| CORRECTION (g/cc) | 1398–1614 | 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 77%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 1398–1614 | 37% | 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 37%; ambiguous rows 11%; curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 1398–1614 | 0% | 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 0%; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 1398–1614 | 100% | pass | r 0.99 median, error 0.6% of scale, 7% below r 0.8 (n 411) | LAS |
| LINE TENSION (Ib) | 1398–1614 | 0% | 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 0%; curve name not recognized: 'LINE TENSION' | ||
| CNPOR (pu) | 1648–1834 | 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 73%; curve name not recognized: 'CNPOR' | ||
| CORRECTION (g/cc) | 1648–1834 | 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 55%; curve name not recognized: 'CORRECTION' | ||
| DCAL (in) | 1648–1834 | 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); curve name not recognized: 'DCAL' | ||
| DPOR (pu) | 1648–1834 | 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%; curve name not recognized: 'DPOR' | ||
| Gamma Ray (GAPI) | 1648–1834 | 100% | not used: ambiguous rows 52% | ||
| LINE TENSION (Ib) | 1648–1834 | 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%; curve name not recognized: 'LINE TENSION' | ||
| COND (MMHO/M) | 0–1107 | 25% | not used: coverage 26%; ambiguous rows 19%; scale OCR confidence 0.74; curve name not recognized: 'COND' | ||
| Gamma Ray (API-GR) | 0–1107 | 74% | not used: ambiguous rows 8%; curve class not verified by the benchmark: Gamma Ray traced as thick | ||
| RES (OHM-M) | 0–1107 | 94% | not used: ambiguous rows 50%; curve name not recognized: 'RES' | ||
| Caliper (INCH) | 30–1123 | 83% | not used: ambiguous rows 10%; scale OCR confidence 0.75; curve class not verified by the benchmark: Caliper traced as thick | ||
| Gamma Ray (API-GR) | 30–1123 | 91% | not used: ambiguous rows 30%; curve class not verified by the benchmark: Gamma Ray traced as thin | ||
| RES(SG) (OHM-M) | 30–1123 | 86% | not used: ambiguous rows 10%; curve name not recognized: 'RES(SG)' | ||
| Gamma Ray (API-GR) | 0–1113 | 86% | not used: ambiguous rows 9%; curve class not verified by the benchmark: Gamma Ray traced as thick | ||
| POR(NEU) SS (PERCENT) | 0–1113 | 92% | not used: ambiguous rows 42%; curve name not recognized: 'POR(NEU) SS' | ||
| RES(DG) (OHM-M) | 0–1113 | 89% | not used: ambiguous rows 25%; curve name not recognized: 'RES(DG)' |
"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 | 2104.0 ft |
|---|---|
| Perforated interval | 1074.0–1822.0 ft |
| Ground elevation | 6634.0 ft |
| Permit | 332123 |
| Location | 39.44000, -104.66000 |
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.