In our neck of the savannah there is one of the cities that has 500 water reservoirs. These include dams as well as towers. The towers also regulate pressure. My burrow is located on the highest point in my suburb, so I am the first to lose water and the last to get it back. The Meerkats that live down in the crack, often don't even notice that there has been a water outage. In the greater region there are well over 1200 water reservoirs and same a handful of significant large dams. However, of the latter there are only a handful.
Read the article over at LinkedIn here.