ERDC/CHL CETN-IV-24
March 2000
e. Have any sediment samples been taken at or near the site?
f. Have any bed material samples been taken on the flood or ebb shoal?
g. Have any multi-beam or SHOALS surveys been run on the site?
h. Has side scan sonar been used to investigate the site?
i. Are beach profile surveys available?
j. Are there any aerial photographs available?
k. Are these photos in a digital format?
l. Have any Landsat or thematic mapper images been captured for this site over the years?
m. Has any dredging occurred at the site?
n. Who performed the dredging and where are the associated surveys?
o. What are the historical volumes removed?
p. How was the material removed and where was it placed?
q. How was the material removed?
SHOALS
(Scanning
Hydrographic
Operational
Airborne
Lidar
Survey)
(http://shoals.sam.usace.army.mil) and multi-beam bathymetric surveys are sometimes available
and are valuable for assessing local, as well as wide-area geomorphic changes that occur at the
inlet. Navigation charts are beneficial for initial planning, but may be several years old and
would ultimately require comparison with recent bathymetry data to assess the validity of the
chart for further use. Most charts are not updated frequently enough to capture local changes in
bathymetry at the project.
2. Inventory data needs for analyzing the problem. Following the site visit, assessments can be
made of the information readily available, and a determination can be made of the types of data
and level of effort that may be required to investigate the existing conditions at the inlet.
a. What data are needed to support the analysis method?
b. How are the data going to be used?
c. Who will use it?
d. To what accuracy are the data needed?
e. How will the data be processed?
f. Are some data types/locations more critical than others?
g. Are redundant gauges needed at any locations?
h. How will the data be made available to all the users?
i. Could additional data be collected for future studies that would be cost-effective?
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