1. Spring Tides

2. The average height of lower low water at spring tides at a location.

3. The highest spring tides of the year occur after the equinoxes in March and September.

4. 18 The highest spring tides of the year occur after the equinoxes in March and September.

5. 29 The highest spring tides of the year occur after the equinoxes in March and September.

6. A tidal surface datum approximating the level of the mean of the lower low water at spring tides.

7. The highest of the spring tides might wash up all around the houseboat but it would never float again.

8. 5 In the tidal difference daily variations, there is a period of half lunar month of syzygy spring tides related to the phase of the moon.