Aunt Lydia=s Cove Dredging and Disposal Area Summary 1989-1999

Dredging Plan Recommendations

Dredged Volumes Relative to Inlet Volumes

CHL-TR-01-26-2
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Aunt Lydia=s Cove Dredging and Disposal Area Summary 1989-

1999

Date

Disposal Area

entrance ch. (near

entrance channel

to improve flushing

~5,000 at Claflin Ln.

(off Claflin Ln)

~4,000 at various Town

Town Landing -Cockle

Cove (truck hall from

CBI beach at Fish Pier)

Andrew Harding=s Lane

(off Claflin Ln)

Andrew Harding=s Lane

(off Claflin Ln)

Andrew Harding=s Lane

(off Claflin Ln)

Source: Town of Chatham, Department of Coastal Resources and County of Barnstable,

Department of Dredging.

Dredge location from aerial photography.

removed during this initial construction. The originally authorized dredged

entrance channel was in approximately the same position as where the 1987/89

natural channel had been between Tern Island and south Tern Island shoal.

Dredging operations can be seen in progress in Figure 15, where the dredge is

cutting through the western portion of the north flood shoal's ebb shield.

Until May 1998, the natural channel between Tern Island and the north flood

shoal was the primary all-tide access to the anchorage and Fish Pier.1 After the

spring of 1998, the flood shoal northward migration closed off this channel,

restricting tidal flushing. The channel was essentially shoaled in after this time

and access to the Fish Pier during most phases of the tide were effectively closed.

The Town of Chatham decided to abandon this channel and re-establish a channel

on the western marginal ebb spit. Smaller quantities of sand were dredged to

maintain the entrance channel through this growing west ebb spit of the north

flood shoal by Barnstable County in 1998 and 1999. Controlling depth had

shoaled to around 2 ft (0.6 m) mllw over this spit. Sand from the last three

1

Personal Communication, 2000, T. Keon, Dept. of Coastal Resources, Town of Chatham, MA.

78

Chapter 6 Dredging Plan Recommendations

Western Governors University

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