Features

Everything a captain needs for the spot they're looking at, on one chart, from the best available source.

🗺️ NOAA nautical chart, seamark, and bathymetry contour overlays on the satellite basemap

Charts & base maps

Satellite basemap with NOAA nautical chart and seamark overlays, plus bathymetry depth contours: the chart foundation for the area you're viewing.

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Live & predicted tides

NOAA CO-OPS predicted and observed water levels for every station on the US coast, plus PR, USVI, and the Pacific islands. Live gauge pins, interactive charts, and a monthly tide calendar.

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Weather & wind

NWS HRRR wind, precip, and cloud overlays across CONUS, plus live NDBC buoy observations, animated so you can read the trend, not just a number.

🛰️ Sea-surface temperature with isotherms showing an offshore temperature break

Sea-surface temp & water color

Satellite SST, isotherms, and chlorophyll overlays for finding edges and breaks, the temperature lines offshore fishermen chase.

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Currents & swell

RTOFS surface currents and NWPS swell forecasts so you know how the water's moving and what the ride out will feel like.

🏞️ USGS streamflow gauge with historic-percentile chart on a tailwater

River flow & dam releases

USGS live streamflow with historic-percentile context, plus next-day TVA generation schedules. Tailwater trout anglers are first-class users, not an afterthought.

⚠️ USCG Local Notice to Mariners hazard pin with detail sheet

Coast Pilot & hazards

NOAA Coast Pilot reference for the area you're viewing, plus USCG Local Notice to Mariners across all nine operational districts: East, Gulf, Pacific, Great Lakes, Hawaii, and Alaska.

🌙 Solunar force chart and feeding-window card over a coast of live tide stations

Solunar & moon

Major and minor feeding windows, moon phase, and a solunar force chart, overlaid right on the tide calendar.

📍 Saved waypoints list with per-spot conditions snapshots in the My waypoints & trips sheet

Waypoints & trips

Save your spots with a conditions snapshot, record trips with GPS, and sync across web and iPhone: your data, keyed to your account.

📶 A downloaded offline region outlined in red over the nautical chart

Offline charts

Download regions before you lose signal so the chart and your waypoints are there when the bars aren't.

🇺🇸 Country-wide chart coverage zoomed out to the full US coastline

Country-wide coverage

East Coast, Gulf, Puerto Rico, the deep Atlantic, the West Coast, Hawaii, and Alaska. Coverage grows as each upstream source does.

🎣 Tide detail sheet with a Live source pill and station distance, source and age always visible

Best-available data

Each overlay shows the most accurate signal for your spot: accuracy first, then proximity, then freshness, with the source and age always visible.

Open the Chart

TidalMap is for informational and recreational use, not for navigation.