Debris flow definition

Debris flow means a rapidly moving slurry of rock, soil, wood, and water, which is most often initiated by a landslide that delivers to and travels through steep, confined stream channels.

Debris flow means a slurry of rock, soil, organic material, and water transported in an extremely fast and destructive flow down channels and ontoand across alluvial fans; including a continuum of sedimentation events and processes such as debris flows, debris floods, mudflows, clear-water floods, and alluvial-fan flooding.

Debris flow means the rapidly downslope-moving mass of a viscous water- saturated mixture of rock fragments, soil, vegetation, and mud.

Examples of Debris flow in a sentence

• Debris flow hazard investigations shall be conducted by a qualified engineering geologist.

• Debris flow characteristics relative to channel slope (adapted from Benda et al.

• Debris flow hazard reports shall contain all requirements described in Appendix E of this chapter, Minimum Standards for Debris Flow Hazard Studies.

• Debris flow hazard studies and reports shall be prepared in accordance with “Guidelines for the geologic evaluation of debris flow hazards on alluvial-fans in Utah,” draft UGS Miscellaneous Publications, Misc 04-X.

• In mountain torrents the hazard is controlled by• Water flood (discharge, velocity)• Debris flow (discharge, velocity)• Debris accumulation (height)• Erosion (depth)The probability of activity normally cannot be calculated directly from data because of the lack of measurements.

More Definitions of Debris flow

Debris flow means a stream-like flow of muddy water filled with mixed sizes of sediment and rock. Debris flows are generated by sporadic heavy rains on steep slopes.

Debris flow means a moving mass of rock fragments, soil, and mud; more than half of the particles being larger than sand size; a general term that describes a mass movement of sediment mixed with water and air that flows readily on low slopes.

Debris flow means the rapid downslope movement descending steep pre-existing drainage channels of water-saturated soil and debris;

Debris flow means a moving mass of rock fragments, soil and mud, more than half of the particles being larger than sand size. Rapid debris flows can move up to 160 kilometers per hour.

Debris flow means a moving mass of rock fragments, soil, and mud, more than half of the particles

Debris flow means the rapidly down-slope-moving mass of a viscous water-saturated mixture of rock fragments, soil, and mud, more than half of the particles being larger than sand size. [Ord. 1170B, 2000; Ord. 1157, 1998; Ord. 1150 §2, 1996]

Debris flow means levees consisting of coarse sediment up to large boulders in size with large accumulations of sediment and debris. They are the most powerful and destructive fan forming process, removing or altering entire stands or portions thereof. They are characterized by multiple active and inactive channels and gradients near the apex greater than 7% on average. Mature forest and deadfall within fans plays an important role in energy dissipation. Removal of mature forest from fans where this process dominates can result in events travelling farther downstream or beyond the feature where non-forest values can be affected, such as fish;