Fig. 8. Colorado River mouth, TX (Gulf Coast)
PARAMETERS & STATISTICS
The Federal Inlets Database contains a wide range in values, for example, tidal prisms
on the order of 1.87x109 m3 for the Columbia River on the border of Oregon and
Washington states, and as small as from 0.84x106 m3 for Sabine Pass, Texas. The
database contains entries varying greatly in size of inlet, wave exposure, tidal prism, and
number of jetties. Inlets with no jetties, one jetty, and two jetties are represented.
Table 1 lists 42 hydraulic, geometric, and tidal parameters to be included within the
Federal Inlets Database, and Table 2 presents the inlets with some of the highest and
lowest values for each parameter.
Table 1. Parameters Contained with in the Federal Inlets Database
Inlet Name
Date of Recent Spring Tidal Prism
State
Average Tidal Range, m
District
Spring Tidal Range, m
Spring Discharge, m3/sec
River Average Discharge, m3/sec
Longitude
River Maximum Discharge, m3/sec
Minimum Width, m
Previously Documented Tidal Prism, m3
Number of Jetties, 0,1,2
Previously Documented Cross Section,
Weir, Y, N
m2
Location of Weir (N,S,E,W)
Representative Average Net Longshore
Number of Breakwaters
Sediment Transport, m3/yr
Recent Spring Tidal Prism, m3
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