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STREAM STABILITY STUDY FOR PIPELINES IN HIGH CONSEQUENCE AREAS. By: Larry Blair, PE Eastern Sandoval County Arroyo Flood Control Authority (ESCAFCA) Sandoval County, New Mexico November 5, 2010. COLORADO. OK. ARIZONA. Placitas. TEXAS. A Little History. - PowerPoint PPT Presentation
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STREAM STABILITY STUDY FOR PIPELINES
IN HIGH CONSEQUENCE AREAS
By: Larry Blair, PEEastern Sandoval County Arroyo Flood Control Authority
(ESCAFCA)Sandoval County, New Mexico
November 5, 2010
ARIZONA
TEXA
SOK
COLORADO
Placitas
A Little History• Sandia Mountains; Rio Grande River; Las
Huertas Creek• Village of Placitas• Pipelines
Purpose of Channel Stability Study• Preserve the natural state of the arroyo• Prevent potential problems with exposure of the
pipeline
Methodology• Hydrologic Analysis – 30 Years
– 2 Yr– 5 Yr– 10 Yr– 25 Yr– 50 Yr– Plus 100 Yr Event
• Soils Analysis• Predict Lateral and Vertical Movement
Conclusions• Standards may not be adequate• Stream stability study may be a good tool