Princeton system tracks drought to aid disaster relief

Princeton system tracks drought to aid disaster relief: he problem is that there is often no easy way to get data about water supplies in these areas — water monitoring stations don't exist, or they don't work, or they are simply too dangerous to operate. Groups such as AGRHYMET, an intergovernmental hydrology, agricultural and food security agency based in Niger, often have to rely on far-flung observers, often volunteers, to obtain the information manually.