The 10 Most Common Childhood Illnesses. Your kid is bound to catch something this winter, so make sure you're ready. Get the lowdown on 10 common childhood illnessesâand tips for helping her recover faster. Knowing the common symptoms, and when your child needs to see a doctor, will help make this cold and flu season a manageable one. By Heather Gowen Walsh from Parents Magazine.
The effect of a dam and its reservoir on flow regimes depends on both the storage capacity of the reservoir relative to the volume of river flow and the way the dam is operated. The most common attribute of flow regulation is a decrease in the magnitude of flood peaks and an increase in low flows.
Floods also have a downside. Ecosystems depend on a careful balance of factors, and the sudden impact of a flood can quickly disrupt this. While floods affect mainly dry land, water-based habitats are at risk from the runoff of the flood. The run-off contains sediment and products such as pesticides and fertilizers, and will carry these into the ecosystem.