OCR Text |
Show Hyde- D 621 gets around the end of this delta, keeps caving it in; a lot of times there will be mud balls that roll down and cobble rocks. What do you mean by mud balls? Up in the clay washes there will be a clay bank cave off, a small one, the water in the flood will start to rolling that piece of clay, and it will pick up other pieces of clay, and get as big as the front wheel of a wagon. This will be composed of all kinds of sediment, cobble rocks, clay, sand, all rolled into a big mud ball; that is all washed into the river and they stay longer than the loose sand does. But in time the river cleans that all off, takes the rock and clay balls too, and gets back to it a natural channel. Are there a good many sand bars in the San Juan river? There is nothing else but sand bars in that section. Are they stable? No, they are not. Stay the same place day after day? No; they often change in an hour. Are there any rapids in the San Juan river below Buff? Yes, there is what we call rapids; there is rapids in the upper canyon below the mouth of Chinle; there is the rapid on the loose boulder -- always remained there while I have been there -- at the mouth of Gypsum creek between Medicine Hat and the bridge. 2589 |