Hydrographic Survey

in Shallow Water Streams

BRIDGE

SCOUR

≈ 60% of all

bridge failures

$50 Billion

Property Damage

Caused by floods

In U.S. in 1990’s

Reservoir Sedimentation

Habitat Analysis

Single Beam Depth Sounders

USACE EM 1110-2-1003 Standard?

vs

Multibeam Depth Sounders

Multibeam vs Single Beam Depth Sounders

Shallow Areas

Amount of Data

Bathymetric LiDAR

Questions?Questions?

Anthony Alvarado (alvaradoa@ayresassociates.com)Dusty Robinson (robinsond@ayresassociates.com)