what goes in mudboils
Now, the mudboil dumps 20 tons of sediment a day into the creek. That's about two average dump truck loads.
Mudboils aren't new, and it's not clear how much of the current problem is caused by nature and the valley's long history of brine mining. The first published report of mudboils came in 1899.
The Tully Valley mudboils are volcanolike cones of fine sand and silt that range from several inches to several feet high and
from several inches to more than 30 feet in diameter. Active mudboils are dynamic ebb-and-flow features that can erupt and form a
large cone in several days, then cease flowing, or they may discharge continuously for several years.