Original witness · immutable source record
Gila River near Gila, NM
2026-10-30 02:00 MDT · USGS 09430500
33.06150278, -108.53738611 · HUC 15040001
Evidence: USGS provisional instantaneous discharge measurement (parameter 00060). This is a published instrument observation, not a personal field visit. USGS reports drainage area 1,864 square miles.
Selected watershed cell
Skeleton Key
Investigation · Observation to meaning
Question: How does this measured discharge connect to upstream rainfall, tributary inflow, storage, and downstream conditions?
Interpretation / hypothesis: A single discharge value describes flow at one time and place. It cannot independently establish the cause of that flow or a watershed-wide trend.
Creative extension: Build a scale-switching hydrograph atlas showing measured tributary and mainstem records with time alignment and provenance labels. This is a design possibility, not observed evidence.
Packet + Trace · Independent continuity
Export the complete witness, linked cells, source genealogy, investigation, and append-only activity history. Import the same JSON in a new session or browser.
Inspect serialized record
Continuity self-test
Not run yet. The test uses a JSON round trip and checks source, location, witness, cell links, and Trace.
A second-browser-session test must be completed by opening this file again and importing the exported JSON. The built-in test checks the serialization pathway but does not impersonate an external session.