Enclosure (1) TO COMDTINST 16478.12
surrounded by riprap, a multiple pile structure located in Annapolis Harbor,
and two single pile AtoNs located in silty-bottom areas.
Tampa Bay, Florida
Tampa Bay is Florida's largest open water estuary and consists of a connected
group of estuaries and embayments, which include Old Tampa Bay, Hillsborough
Bay, Boca Ciega Bay, Terra Ceia Bay, and the Manatee River, as well as Tampa
Bay proper.
Tampa Bay is a naturally shallow estuary, having an average depth of about 12
feet (Goodwin, 1984) and a maximum depth of about 90 feet in the Egmont
Channel at the mouth of the bay. Sediments and bottom features in Tampa Bay
are generally uniform, with the majority of coverage being unconsolidated
sediments or soft bottom. Surface sediments in Tampa Bay consist of
predominantly quartz sand. The average size of sediment particles increase
from the upper to lower reaches of Tampa Bay. Organic sediments and fine
silts and clays are found primarily in the upper portions of Hillsborough Bay.
Sediments in the lower portion of the bay consist primarily of fine to coarse
sands.
The Tennessee River
The Tennessee River is one of three major rivers (Tennessee, Cumberland, and
Mississippi) that drain the state of Tennessee, providing hydroelectric power
through the Tennessee Valley Authority Dam System. The study areas selected
from the Tennessee River include Lakes Chickamauga and Nickajack, which are
located in Hamilton County, Tennessee. Lake Chickamauga is multipurpose
reservoir providing flood control, hydroelectric power, and recreation. Lake
Nickajack is a run-of-the-river system providing similar benefits to the area.
The tail waters of Lake Nickajack and the deep pool area of Lake Chickamauga
border Chattanooga, with the dam at Lake Chickamauga located northeast of the
city. The normal pool area of Lake Chickamauga covers approximately 35,400
acres at elevation 682.5 mean sea level (msl). Lake Nickajack surface area at
normal pool is 10,370 acres at elevation 34 msl. Bottom types throughout the
lake and river system are soft, muddy, highly organic material.
Puget Sound
The Puget Sound system was created by mountain building and glacial activity.
The area (4,973 square meters) encompasses the San Juan Islands to the north,
Hood Canal to the west, and the Tacoma Narrows to the south. The numerous
inlets and bays form a rare dendritic system that makes up the Puget Sound.
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