Zambezi the overflow of the Zambezi in the rainy season. The delta of the Zambezi is today about half as broad as it was before the construction of the Kariba and Cahora Bassa dams controlled the seasonal variations in the flow rate of the river. Before the dams were built seasonal flooding of the Zambezi had quite a different impact on the ecosystems of the delta from today as it brought nutritious fresh water down to the Indian Ocean coastal wetlands. The lower Zambezi experienced a small flood surge early in the dry season as rain in the Gwembe catchment and
Premenstrual water retention caused by high levels of circulating progesterone, estrogen, and prolactin, which stimulates secretory cells in the body. In the breasts, increased blood flow is also thought to be involved. Water retention and breast swelling can also be caused by hormonal contraceptives (which contain estrogen and/or a progestogen). According to three studies, fluid retention is not premenstrual, but rather peaks on the first day of menstrual flow. It also does not appear to be correlated to serum levels of progesterone or estradiol. Fluid retention is higher in recreational runners as compared to “normally active” women. Premenstrual water retention Premenstrual water retention