nwis.streamflow.daily_values
shallowio.github.whiteknightonhorse/apibase · Verify this server
Get historical daily mean streamflow (discharge) values for a USGS gauge station over any date range. Returns one measurement per day (midnight UTC) in cubic feet per second (ft3/s). Also supports gage height (ft), water temperature (°C), specific conductance, and turbidity via parameter_cd. Ideal for trend analysis, drought monitoring, flood season review, and hydrology research. Coverage: 1,500+ active US streamflow stations, records from 1900s to present. Use water.sites to look up station numbers by state or bounding box. No auth — USGS public domain, unlimited calls.
1 trials · measured 14 days ago
nwis.streamflow.daily_values scores 100.0/100 on Vouch's measured behaviour index, from 1 real invocation trials against io.github.whiteknightonhorse/apibase, measured 23 Sept 2026 under methodology v0.2.0. Every measured component scored 100.
Component breakdown
| Component | Weight | Value |
|---|---|---|
| Reliability | 35% | not applicable |
| Schema integrity | 25% | 100.0 |
| Failure behaviour | 15% | not applicable |
| Latency | 15% | not applicable |
| Concurrency | 10% | not applicable |
Tool details
- Transport
- remote + stdio
- Credential class
- self-provisionable
- Input schema
- not declared
- Output schema
- not declared
- Side-effect classification
- unclassified
Score history
| Day | Score | Tier | Methodology |
|---|---|---|---|
| 2026-09-23 | 100.0 | shallow | v0.2.0 |
Probe evidence
| Probe | Outcomes |
|---|---|
| schema_integrity | pass: 1 |
Raw request/response logs are not archived yet — the outcome counts above are drawn directly from every recorded trial.
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