Spring tides occur during the full moon and the new moon. When the moon is full or new, the gravitational pull of the moon and sun are combined. During these times, the high tides are very high and the low tides are very low. This is known by many to be spring hide tide. Spring tides are especially strong tides. They do not occur only in the Spring and do not have anything with the Spring season. They generally occur when the earth, the sun, and the moon are in a line. The gravitational forces of the moon and sun both cause a greater effect on the tides on the earth’s oceans, lakes, and etc.