Indian spring low water

An arbitrary tidal datum approximating the level of the mean of the lower low waters at spring time, first used in waters surrounding India. Also known as harmonic tide plane; Indian tide plane.

Related terms:

• mean low-water springs
• spring low water
• mean diurnal low-water inequality
• low water
• tropic low-water inequality
• mean lower low water
• lower low water
• tropic lower-low-water interval
• Indian tide plane
• mean low water