Folly River Tide Gauge
The public can access the data from the tide gauge on the Folly River Bridge through Hohonu.
With the TideCast app, you can access the Hohonu data, including:
72-Hour Water Level Predictions: 80% more accurate that traditional tidal forecasts.
12-Month Tidal Predictions: Over 1,500 NOAA locations providing data.
Weather Conditions: Access wind, sun and moon phase, temperature and rain data.
The city maintains a solar powered Hohonu tide gauge over the Folly River Bridge. Find local tide data here.

Download the TideCast app here.
CoastSnap
CoastSnap is a beach monitoring project that uses cell phone photos taken by beach comers at a specific site to track how a place’s shoreline is changing over time. The data helps the U.S. Army make decisions on when to renourish the beach and provides scientists important data on shoreline change, sea-level rise, king tides and hurricanes.
You can access the CoastSnap station on the Folly Beach Pier. Read more about it here.