Water retention

Water retention can refer to:


 * Water retention (medicine), an abnormal accumulation of fluid in the circulatory system or within the tissues or cavities of the body
 * Edema, an abnormal accumulation of fluid beneath the skin, or in one or more cavities of the body
 * Premenstrual water retention, a common phenomenon associated with the menstrual cycle
 * Water retention curve, relationship between soil water content and water pressure head
 * Water retention on mathematical surfaces, topographic surfaces with basins
 * Soil water (retention), the capacity of soil to hold water not removed by runoff, drainage or evaporation
 * Retention basin