Port Mansfield water level
NOAA tide gauge 8778490 · Willacy County · Rio Grande Valley
water level, NAVD88 · Oct 23, 2026 at 9:54 PM CDT · 11 minutes ago
- Usual range
- 0.82 to 1.81 ft
NOAA marks recent readings as preliminary: they can be revised after review.
Last 7 days
Hourly averages of NOAA's six-minute readings. The shaded band is this gauge's usual range: the middle 80% of its readings since September 11, 2026.
How to read this gauge
The number is the observed water level relative to NAVD88. This station publishes no tidal datum, so it can't be stated against an ordinary high tide. It is the water surface, not a depth.
Daily highs and lows since September 11, 2026
Other tide gauges in Rio Grande Valley
| Tide gauge | Water level | Against flood thresholds | Updated |
|---|---|---|---|
| Port Isabel | +0.27 ft | 0.9 ft below NWS minor | 11 minutes ago |
| Realitos Peninsula | +0.91 ft | — | 17 minutes ago |
| SPI Brazos Santiago | +0.17 ft | 1.1 ft below NWS minor | 11 minutes ago |
| South Padre Island CG Station | +0.30 ft | 0.9 ft below NWS minor | 17 minutes ago |
Download the readings
port-mansfield.csv (CSV): every six-minute reading from the last 90 days, 10,190 rows, with time in UTC and Central, water level in feet relative to NAVD88, and NOAA's quality flag (p preliminary, v verified).
port-mansfield-daily.csv (CSV): the low and high of every day since September 11, 2026.
Source. Water levels, datums, thresholds and the record from NOAA Tides & Currents (CO-OPS); coastal flood thresholds from the National Weather Service. This site is not affiliated with either.