THOMAS CHUTE (upper end) (closing dams near upper end).

591.7

591.8

BRYANTS CREEK (enters Thomas Chute behind Mosier Island).
MOSIER ISLAND (head) (partly inundated).

592.0

ISLAND NO. 476 (foot) (partly inundated).

592.0

ROCK ISLAND-ST. LOUIS ENGINEER DISTRICT BOUND-
ARY

MOSIER ISLAND (foot) (partly inundated).
THOMAS CHUTE (lower end)..

594.6

595.3

595.3

596. 1

596.4

597.2

597.6

598.0

598.4

598.9

398.9

599. 2

599.2

597.1

HAMBURG, CALHOUN CO., ILL. (300). Ferry to Missouri side.
WESTPORT CHUTE (upper end) (closing dam near upper end).
WESTPORT ISLAND (head) (partly inundated).

KELLY ISLAND (head) (partly inundated).

KICKAPOO ISLAND (head) (now inundated).

KELLY ISLAND (foot) (partly inundated).

GILEAD SLOUGH (upper end) (now within pool).
WILDWOOD LANDING..

KICKAPOO ISLAND (foot) (now inundated).

WESTPORT, LINCOLN CO., MO..

ISLAND NO. 489 (head) (partly inundated).
REDS LANDING.

WESTPORT ISLAND (foot) (partly inundated)
ISLAND NO. 486 (foot) (partly inundated).

599.4 ISLAND NO. 487 (foot).

787954-48

576.8

577.7 577.8

578.0

578.0

578.8

578.8

579.0

579.3

579.5

ISLAND NO. 461 (foot) (now inundated).

PHARRS ISLAND (ISLAND NO. 460) (foot) (partly inundated).
MIDDLETON ISLAND (ISLAND NO. 462) (head) (partly inunda-
ted).

SIX MILE CREEK (enters the Sny).

EMERGENCY MOORINGS.

MIDDLETON ISLAND (ISLAND NO. 462) (foot) (partly inunda

ted).

CLARKSVILLE CHUTE (foot) (present main channel).
CALUMET CREEK.

ARRIVAL POST.

GAGE, LOCK AND DAM NO. 24 (upper) (see p. 288).

579.6 LOCK AND DAM NO. 24 (see p. 188) (for regulations see p.21). Lock on right bank, 110' x 600'.

CLARKSVILLE ISLAND (head).

GAGE, LOCK AND DAM NO. 24 (lower) (see p. 288)..

CLARKSVILLE, PIKE CO., MO. (879) Railroad: Chicago, Burlington

& Quincy.

ARRIVAL POST..

EAGLE ISLAND (head)

CLARKSVILLE ISLAND (foot).

579.8

579.8

580.0

580.0

582.0

582.3

583.2

583.6

584. 1

585.5

585.8

586.0

SLIM ISLAND (head).

EAGLE ISLAND (foot).

CARROLL ISLAND (head).

AMARANTH ISLAND (ISLAND NO. 466) (foot).

COON ISLAND (head).

CARROLL ISLAND (foot).