County of Los Angeles Department of Public Works

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Debris Flows - Homeowners's Guide for Flood, Debris and Erosion Control
HOMEOWNER'S GUIDE
FOR FLOOD, DEBRIS,
AND EROSION CONTROL

INTRODUCTION

I. THE PROBLEMS
 º Flood Waters
 º Debris Flows
 º Erosion

II. EMERGENCY HOME
    PROTECTION
 º General Rules
 º Flood Insurance
 º Debris Control Aids
 º Sandbags
 º Control Of Water Intrusion
 º Deflections Devices and
   Building Protection
 º Engineered Concrete
   Block Walls

III. OTHER PROPERTY
     PROTECTION MEASURES
 º General Property Guidelines
 º Property Drainage Hints
   to Homeowners
 º Slope (Bench) Drains
 º Natural Watercourse Erosion
 º Planting Guidelines
 º Ground Covers
 º Shrubs and Trees
 º Grasses

IV. SUMMARY
V. GLOSSARY OF TERMS
VI. ACKNOWLEDGMENTS

Figures º Free Booklet
GUIDE HOME

La Guia En Español

I. THE PROBLEMS
DEBRIS FLOWS
Another equally dangerous problem, usually in hillside or mountainous areas is debris flows. Remember that debris flows:
CONSISTof large quantities of soil, rocks, boulders, trees or brush being moved by flood waters.
OCCURwhen flood waters flow over hillside and natural streambed areas and are most serious in areas denuded by recent fire or grading.
AREhighly destructive and leave large quantities of sediment and rocks in their paths when the storm subsides.
CONTAINsufficient strength to destroy objects in their path.
CANbe controlled or directed to reduce property damage.
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