Figure 6-7 plots the measured water level and water level as calculated with

the CEA model for Goldsmith Inlet. The CEA model cannot reproduce the

asymmetry of the observed signal (as discussed in Chapter 4). The model can

still give an estimate of stable channel cross-sectional area if the amplitudes

correspond in the calibration.

Goldsmith Pond Water Level

Figure 6-7. Goldsmith Pond water-level measurements and calculations by

CEA model

Figure 6-8 shows the calculated maximum velocity curve and the calculated

equilibrium velocity curve for Goldsmith Inlet. The empirical relation for small

inlets developed by Byrne et al. (1980) predicts an equilibrium cross-sectional

area of 109 sq ft for Goldsmith Inlet, and their empirical equation with the CEA

Escoffier analysis gives a stable channel cross section of 114 sq ft. These

calculations are close to value of the minimum channel cross-sectional area of

80 sq ft obtained from the October 2002 survey.

Figure 6-9 plots the tidal prism and channel area relation for Goldsmith Inlet

with data of the inlets studied by Byrne et al. (1980) and Simpson (1976). The

Goldsmith Inlet data points conforms well with the trend of the small Chesapeake

Bay inlets. The two Puget Sound inlets studied by Simpson (1976), Lagoon

Point Inlet and Hancock Lake Inlet, are included because they are similar to

Goldsmith Inlet in being small, gravelly inlets. The inlets studied by Simpson

(1976) were not protected by jetties.

280

Chapter 6 Inlet Morphology and Stability

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