With monsoon comes the danger of flash floods. This is desert country, which means low annual rainfall and very few streams. But the whole area is “drained” with a wide series of dry washes; these have water flowing only when it rains in the watershed that feeds the wash. And the land that the washes drain is not flat; there is a noticeable slope from the foothills down through the “flatlands” below. When it rains up in the watershed the water flows down quickly and the washes become flooded. Especially in the outlying areas around the cities there are no culverts where the washes cross the roads, so the road just dips down to accommodate the wash and its flow. Continue reading Flash floods. Golf cart lights.