However some rivers exhibit a mysterious behavior—they vanish inexplicably leaving behind dry channels or sinking beneath the earth. North America with ... a robust stream with noted periods ...

Rivers: diverse habitats ... of the United States of America 98, 166-170 (2001). Resh, V. H. et al. The role of disturbance in stream ecology. Journal of the North American Benthological Society ...

An example is the Casiquiare River in South America. It runs between the Amazon ... Oil production even influences its well-being near this stream. Even monitoring for pollutants is practically ...