# N05_E18 Utility and Activity-Lineage Crosscheck: 1910 Gary Municipal Infrastructure and 2022 WQP/NWIS Record **Research date:** 2026-08-08 **Sector:** `N05_E18` (canonical 24 × 24 cell; 37.5–45.0°N, 90–75°W) **Time bands:** 1800–1950; 2000–present **Status:** bounded research note; no sector score or quadrant assigned ## Research question and selection rationale The prior N05_E18 neighboring-station note left two connected search paths unresolved: (1) locate a primary municipal or engineering record for Gary's early industrial utility and transport buildout; and (2) trace the exact Water Quality Portal (WQP) activity `nwisin.01.02200882` behind the reported 674 mg/L dissolved-oxygen row without replacing it with an inferred correction. This run selected the City of Gary's 1910 annual report because it is an official municipal record with page-level infrastructure and utility descriptions, and it retrieved the exact WQP activity plus the date-bounded result set to preserve its associated field measurements, sampling method, status, and provider metadata. ## Raw observations ### Historical observation A — Gary's physical and industrial setting - **Source:** City of Gary, *Annual Report of the Heads of Municipal Departments of the City of Gary, Indiana 1910*, Internet Archive identifier `annual-report-of-the-city-of-gary-indiana-1910-images`. - **Publication/date metadata:** City of Gary; dated 1910-12-31 in Archive.org metadata; description identifies the report as including the history and development of the steel city, municipal departments, city engineer, sewer improvement, and related sections. - **Page checked:** printed p. 17, PDF page 14. The scan was rendered and visually checked; OCR was used only to locate the passage. - **Observation:** the report describes Gary as occupying 31 square miles at the southern end of Lake Michigan, extending about seven miles along the lake shore, with the United States Steel Corporation's lake-front and river-side reservation covering approximately eight square miles and containing steel mills, railroad yards, and subsidiary plants. - **Observation:** the same page describes Grand and Little Calumet rivers crossing the city; it reports about twelve miles of Grand Calumet frontage within city limits and describes a harbor used by the steel corporation fleet for ore shipments. The source presents the river and harbor claims as a municipal description; this note does not independently verify the measurements. - **Geographic scope:** Gary municipal boundary and industrial reservation, not the full fixed cell. The Gary observations are within `N05_E18` but do not establish cell-wide conditions. - **Value type:** bounded qualitative municipal observation; the 31-square-mile and approximately eight-square-mile figures are source-reported quantities, not newly derived measurements. - **Source tier:** A/B boundary: official municipal report, but a descriptive civic document whose claims and promotional framing require source-aware interpretation. - **Confidence:** high for what the report states and for page provenance; medium for using it as a representative description of the wider cell. - **Missingness/uncertainty:** `geographic_match_uncertain` for sector-wide extrapolation; source framing may emphasize planned or favorable conditions. **Provenance:** **PDF scan:** **OCR derivative:** ### Historical observation B — utility franchise and water tunnel - **Page checked:** printed p. 25, PDF page 24. - **Observation:** the report states that the Gary Heat, Light and Water Company, described as a subsidiary of United States Steel Corporation, received the franchise for supplying the future city with gas, electric lights, and water. It states that the company spent nearly three quarters of a million dollars constructing a water tunnel supplying Lake Michigan water and also constructed gas works and a lighting plant. - **Observation:** the report does not provide a complete capital ledger, tunnel dimensions, pumping energy, delivered volume, service-area map, household connection count, or independently audited utility output on this page. - **Value type:** qualitative infrastructure and institutional observation plus a source-reported approximate expenditure; not a modern electricity-access or water-consumption measure. - **Comparability:** related but not equivalent to modern utility-access, energy, or water-service variables. - **Interpretation limit:** the corporate relationship and franchise arrangement are evidence of an early industrial-municipal utility configuration. They do not by themselves prove universal access, service quality, affordability, or adaptive capacity. - **Confidence:** high for the page-checked report statement; medium for institutional interpretation; low for any cell-wide score absent service-area and accounting records. - **Missingness:** `historical_measure_not_available` for output, coverage, and per-capita service measures in this item; `geographic_match_uncertain` for cell-wide use. ### Historical observation C — interurban rail connectivity - **Page checked:** printed p. 25, PDF page 24. - **Observation:** the report states that the Gary & Interurban Railway Company had more than 20 miles of track in operation in 1910 and describes planned extensions toward Ambridge Avenue, Hammond, Miller, Porter, Chesterton, Indiana Harbor, and Whiting. The report also states that the franchise began in 1907 and describes fare and paving provisions. - **Value type:** source-reported local street-railway network quantity and institutional/franchise description. - **Comparability:** related but not equivalent to modern rail-network length or freight connectivity; the figure refers to the named company's local/interurban track, not all rail infrastructure in the sector. - **Confidence:** high for the bounded municipal-report observation; medium for interpreting the network as a regional connection because planned extensions are not equivalent to completed service. - **Missingness:** `geographic_match_uncertain` for cell-wide network aggregation; planned extensions are not counted as completed infrastructure. ### Historical observation D — utility, steel, and settlement claims in source context - **Page checked:** printed p. 17, PDF page 14, and printed p. 25, PDF page 24. - **Observation:** the report states that Gary proper had 334 people in June 1906 and “over 23,000” at the time of the report; it also describes the industrial strip, river arrangement, drainage/sewer system, and ongoing development. These are contemporaneous municipal-report statements, not independently reconstructed population estimates in this note. - **Observation:** the report's table of contents and utility/engineering sections indicate that related municipal records may contain additional primary tables for water, sewer, street, finance, and improvement works; this is a search lead, not an extracted result. - **Confidence:** medium for the quoted source assertions due to local promotional context and absent independent cross-check in this run. - **Missingness:** `conflicting_sources` or `period_match_uncertain` should be used if later census or engineering records disagree; no disagreement is resolved here. ### Modern structured observation E — exact WQP activity lineage fields - **Source/query:** WQP Result search restricted to station `USGS-05536356` and activity `nwisin.01.02200882`, CSV response retrieved 2026-08-08. - **URL:** - **Observation:** the exact activity is an `USGS-IN` routine surface-water sample at `USGS-05536356` on 2022-08-30 at 07:40 EST. Hydrologic condition is “Stable, normal stage”; hydrologic event is “Routine sample”; collection method code `40` is “Multiple verticals”; equipment is `US WBH-96 weighted-bottle sampler”; provider is `NWIS`; result status is `Preliminary`; result value type is `Actual`. - **Dissolved oxygen row:** characteristic `Oxygen`, fraction `Dissolved`, parameter code `00300`, value `674`, unit `mg/l`, no measure qualifier in the returned row, no analytical-method identifier or method name populated. - **Associated raw observations in the same activity:** stream width `15.0 ft` (`00004`); water temperature `23.5 deg C` (`00010`); stream flow `86 ft3/s`, statistical base `Mean`, time basis `1 Day` (`00060`); number of sampling points `3 count` (`00063`); gage height `7.51 ft` (`00065`); specific conductance `996 uS/cm @25C` with result temperature basis `25 deg C` (`00095`). These fields are preserved as associated measurements, not used to calculate or “correct” the oxygen row. - **Scope:** one monitoring location and one sampling activity; not a cell-wide water-quality observation. - **Confidence:** high for the exact returned WQP fields; unresolved for physical plausibility and lineage because the row is preliminary, the analytical method fields are blank, and the value conflicts with the same-site continuous USGS series. - **Missingness/uncertainty:** `conflicting_sources` for the cross-service comparison; `source_exists_not_accessible` remains possible for field sheets, processing logs, QA/QC, or later correction records not exposed by this result query. The value is not converted to zero, discarded, or silently corrected. ### Modern structured observation F — same-site USGS continuous comparison - **Source/query:** USGS NWIS instantaneous-values JSON for `05536356`, parameter `00300`, 2022-08-30. - **URL:** - **Observation:** the same-site continuous series returned values around 6.8 and 6.7 mg/L around the 2022-08-30 period, with a larger daily series available when the query window is expanded. The exact one-day request is the provenance record for the prior comparison; the expanded retrieval on 2026-08-08 confirmed that the site carries a 00300 continuous series around the target date. - **Comparability:** related but not equivalent to the WQP discrete multiple-verticals sample: different acquisition mode, temporal support, and potentially different measurement/processing context. - **Interpretation:** the discrepancy is real as a cross-record conflict in the retrieved data. It is not resolved by choosing the lower continuous values, by assuming the discrete value is a typo, or by deriving a replacement value. - **Confidence:** high for the retrieved USGS response; unresolved for why the records differ. - **Missingness:** `conflicting_sources`; processing lineage and correction status remain unresolved. ## Source interpretation The 1910 report gives stronger primary-source footing for an early industrial utility and transport configuration than the prior local-history biography alone. It documents, in the source's own terms, a corporate-linked water, gas, and electric-light franchise; a Lake Michigan water tunnel; a steel-company harbor and ore-shipping setting; and a local/interurban rail system with more than 20 miles of track. Those observations support a bounded 1800–1950 infrastructure-transition record for Gary, but they do not support a cell-wide energy, water-access, population, or adaptive-capacity score. The exact WQP activity retrieval narrows the unresolved dissolved-oxygen issue. The 674 mg/L value is not an unidentified orphan row: it belongs to a dated USGS-IN routine sample using a stated multiple-verticals method and weighted-bottle sampler, and it appears alongside ordinary field measurements. At the same time, the WQP row is preliminary, lacks an analytical method in the returned fields, and conflicts with the same site's continuous 00300 series. The correct research action is lineage tracing, not silent correction. ## Geography and variable crosswalk | Measure | Status | Reason | |---|---|---| | 1910 Gary municipal descriptions → `N05_E18` | related, not equivalent | Gary is a point/municipal subarea within the fixed rectangle; the report does not cover the whole cell or adjacent lake/watershed areas. | | Reported 1910 water tunnel / utility franchise → modern water or electricity access | related, not equivalent | The item documents institutional infrastructure and a reported expenditure, not service coverage, consumption, reliability, or household access. | | Reported 1910 interurban track mileage → modern transport connectivity | related, not equivalent | The figure concerns a named local/interurban company; planned extensions are not completed links and the fixed-cell network is not enumerated. | | WQP `674 mg/l`, activity `nwisin.01.02200882` → USGS continuous `00300` values | conflicting, not equivalent | Discrete multiple-verticals sample and continuous time series have different temporal/acquisition contexts; the underlying discrepancy is unresolved. | | Same-activity associated field values → oxygen validation | not comparable for correction | Flow, temperature, width, gage height, and conductance provide context but do not independently validate or refute the oxygen result. | ## Derived constraints and adaptive capacity No derived constraint, adaptive-capacity score, normalization, or formula output is calculated. The report's utility, harbor, sewer, and rail observations may later inform infrastructure connectivity and energy-regime variables, but aggregation rules, weights, temporal crosswalks, and missing-data behavior are not frozen for the pilot. ## Model classification ```yaml sector_id: N05_E18 periods_touched: [1800-1950, 2000-present] provisional_quadrant: unresolved reason: primary municipal infrastructure observations and an exact but conflicting WQP/NWIS activity record are insufficient for a fixed-cell formula application ``` `provisional_quadrant` is a model output and is deliberately not treated as an archival fact. ## Unresolved gaps and next search path 1. Locate USGS/WQP field-sheet, laboratory, processing, QA/QC, revision, and correction lineage for `nwisin.01.02200882`; preserve every version as a separate observation with status and retrieval date. 2. Search the 1910 report's city-engineer, water, sewer, financial, and improvement sections for tables that quantify service area, capacity, expenditures, and completed works; page-check all numerical claims against the scan. 3. Locate primary Gary Heat, Light and Water Company, United States Steel, municipal engineering, and railroad records to distinguish planned infrastructure, company-owned facilities, and public service. 4. Crosswalk the Gary municipal subarea and neighboring stations to the fixed cell without treating them as cell averages. 5. Continue the nine-sector Great Lakes pilot with the same raw-observation schema before deriving any score or assigning a quadrant. ## Record limits This is a bounded N05_E18 research note. It adds page-checked 1910 municipal observations and a field-preserving exact retrieval of the 2022 WQP activity behind the disputed 674 mg/L row. It does not establish a corrected oxygen value, cell-wide utility or transport measures, a derived score, a causal claim, or a quadrant. No secrets or private data are included.