If a levee is adjacent to required channel excavation, levee construction can often utilize material from channel excavation. Large centralized borrow areas are normally established only for the...

Major factors to be considered in deciding if an existing pipe can remain in place under a new levee or must be rerouted over the levee, or if a new pipe should be laid through or over the levee are as follows:

Mar 31, 2021 · If the levee monitoring system is realized by analyzing the correlations with displacement results and hydrometeorological factors, it will overcome the existing limitations of system and advance ultra-precise, automated river levee maintenance technology and improve national disaster management.

May 25, 2019 · This paper presents the application of a remote sensing technique to monitor the displacement of the London Avenue Canal levee in New Orleans, Louisiana, from 2009 to 2014. The input data were radar images taken by the German Space Agency’s X-band satellite, TerraSAR-X, over those 6 years.

Jan 16, 2025 · Levee C exhibited displacement patterns with velocity ranges from 15 mm/yr and an overall subsidence trend, with displacements ranging from +5 mm to -15 mm over the study period.

May 17, 2019 · The displacement of a levee section at London Avenue was determined by analyzing the displacement of selected points using the interferometric synthetic aperture radar (InSAR) method. The required steps to calculate the displacement at …

Jan 14, 2025 · Rapid drawdown is as it sounds, a quick drop in the water level near a slope or levee that results in soil instability. When the stress from the water load is released quickly, the slope or levee can experience a pore pressure change, making it unstable.

For each levee, seismic slope displacements (Newmark-type) were computed for four failure surfaces: 1) a deep waterside surface, 2) a shallow waterside surface, 3) a deep landside surface, and 4) a shallow landside surface, where shallow failure surfaces are surfaces that only run through the levee soils and deep failure surfaces are surfaces ...

Preliminary results using satellite data to monitor the New Orleans area are included herein, with a particular focus on two levee sites that include in situ instrumentation for validation of the remotely sensed measurements.

Apr 1, 2023 · The displacement vectors show that the movement is characterized by a translation in the foundation, near the levee's toe, and a roto-translation of the levee slope.