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data api · United States
NOAA CO-OPS Tides and Currents API
Coastal water-level observations, tide predictions and currents from NOAA CO-OPS stations.
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What's in it
- Data offered docs-verified
- water level (6-minute, preliminary or verified) · hourly height water level (verified) · high/low tide water level (verified) · daily mean, daily max/min and monthly mean water level (verified) · 1-minute water level (preliminary) · tide predictions · meteorological: air and water temperature, wind, air pressure, visibility, humidity, conductivity, salinity · air gap at bridges · currents (6-minute default, or hourly), by bin · currents predictions · currents header · OFS model water level guidance (nowcast/forecast)
- Coverage llm-inferred
- United States (per ENTRY regions; CO-OPS stations, including Great Lakes and Columbia River) · Product-dependent; ofs_water_level data available from 2020 to present
- Resolution docs-verified
- Per-station. Temporal: 6-minute default for water level, meteorological and currents data; 1-minute and hourly options; predictions at 1, 5, 6, 10, 15, 30 or 60 minutes, hourly, or high/low
- Update frequency docs-verified
- Preliminary data near real time; verified data monthly (past month verified in the following month)
- Access llm-inferred
- Not stated in DOCS. ENTRY lists no auth and no licence (both null), so access and licence are unverified.
Useful for
- Use cases llm-inferred
- Coastal flood baseline: tidal range and extreme water levels from nearest station using verified high/low and daily max/min data · Tidal boundary conditions for coastal or estuarine flood models using 6-minute water levels and predictions · Long-term sea-level and datum context using verified monthly mean and daily mean water levels · Tidal current inputs for estuarine outfall or marine works design using currents_predictions
- Audience llm-inferred
- flood consultants · coastal engineers · hydrologists · marine and civils engineers
Limitations
- Constraints llm-inferred
- US stations only per ENTRY regions; not applicable to UK sites · Datum is mandatory for water level products, so every request must specify one · Per-request length limits: 1-minute 4 days; 6-minute 1 month; hourly and high/low 1 year; daily means and daily max/min 10 years; monthly means 200 years · Verified data is released station by station each month, with no specific date per station · Each verified interval is a separate product and cannot be selected with the interval parameter · Bin number is required for most current stations · Subordinate tide-prediction stations support only high/low intervals · Datums product is no longer available on this API; use the Metadata API · No auth or licence stated in ENTRY; check terms before commercial use
- Licence
- Unknown — check provider terms
- Authentication
- Unknown — review source docs
- GitHub stars
- Unknown
- Last commit
- Unknown
- Last successful page check
- 14/10/2026
- Page health
- page reachable
- Package
- Not recorded
- Verification
- Not independently verified
Provenance & evidence
Public NOAA documentation verified. Licence/auth unknown until independently established.
Metadata observed 14/10/2026 · editorial seed