Apart from an occasional strainer and some juicy holes during season there is nothing dangerous on the Rio Chili run. Most rapids are class 2-3 except for the mini-canyon stretch which is class 4. The weir releases water for irrigation purposes to the fields through most of the dry season. Even though the flow is low, one can get down there and have fun.
Flowing off the snowcapped El Misti volcano peak, Rio Chili is small and dam controlled and flowing only between March to November. Featuring a relatively short 5-6 kilometer run, it appears at an elevation of 2350 meters at the Arequipa entrance. Rio Chili further descends into agricultural terraces stretching into small granite canyons. Only during higher flows one can continue boating downstream, but make sure that you organize a way for coming back.