Percolation - The downward movement of water from the soil into the rock beneath. Drainage basin - the area of land drained by a river. Channel - the bed and banks that form the route of the river.

The U.S. Bureau of Reclamation can restrict a non-federal water diversion under its contract with the Klamath Drainage ...

Less than 3 inches long, the animal uses pleated skin on the bottom of its body as a self-made sucker, holding onto the rocks ...