The Mecham River has 80-90% of its annual flow concentrated in a 10-day period.
(The Mecham River; has; 80-90% of its annual flow concentrated in a 10-day period) (80-90% of its annual flow; concentrated; T:in a 10-day period)
The Mecham River 80-90% of its annual flow
has concentrated
80-90% of its annual flow concentrated in a 10-day period
T:in a 10-day period