TowTide

GIWW tides, currents & locks

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Tide, current and lock status for the Gulf Intracoastal Waterway — Texas into Louisiana. Built for towboat crews, not beachgoers. CURRENT TAB • Favorites showing what the water is doing right now, each opening to a forecast at 0600 / 1200 / 1800 / 2359 • A map of 58 stations drawn from lat/lon — no map tiles, so it works with no signal • A searchable station list covering the GIWW from Sabine to Port Isabel • The 350: GIWW mile 350 at Bolivar Roads, where the Intracoastal crosses the Houston Ship Channel — ten channels under one card, each with its own forecast LOCKS TAB • Every lock from the Brazos floodgates to the Industrial Lock in New Orleans, collapsed to one line each • Open one for river conditions, per-gate current and head in feet and inches, VHF channel and chamber size • USACE-reported closures and stoppages — the only source that says a lock is actually shut • Mississippi River stages from Red River Landing down to Head of Passes DATA THAT TELLS YOU THE TRUTH • Never presents a substitute gauge as the real one — if the nearest gauge is 5 miles away, the card says so • Never shows a dead gauge's number — older than 24 hours reads GAUGE DOWN • MPH is real water movement; FT/HR is how fast the tide is rising or falling. The app never confuses the two • Live data from NOAA CO-OPS, USGS Water Services and the U.S. Army Corps of Engineers — no account, no tracking, no ads TOWTIDE PRO The four-times-a-day forecast on every station, unlimited favorites, and full lock detail. Monthly (first month free), yearly, or a one-time lifetime purchase. Without Pro, TowTide stays usable with up to three favorites. NOT FOR NAVIGATION TowTide is an information tool. Predictions are astronomical and do not account for wind, river stage or barometric pressure. Always confirm with the lockmaster on VHF 13. Terms of Use: https://jackstaffdigital.com/towtide/terms Privacy Policy: https://jackstaffdigital.com/towtide/privacy

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

The developer, Alan Given, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Purchases
    • Identifiers

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
Alan Given
Size
8.9 MB
Category
Weather
Compatibility
Requires iOS 15.0 or later.
  • iPhone
    Requires iOS 15.0 or later.
  • iPad
    Requires iPadOS 15.0 or later.
  • iPod touch
    Requires iOS 15.0 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2026 Jackstaff Digital LLC
  • Privacy Policy

    • More by Alan Given