590.5

590.6

FOX CREEK (Enters Hamburg Bay).

591.1

591.3

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

ISLAND NO. 475 (foot) (partly inundated)

HAMBURG BAY (mouth) (enters behind Island No. 476).

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

591.7

591.8

592.0

BRYANTS CREEK (enters Thomas Chute behind Mosier Island).
MOSIER ISLAND (head) (partly inundated).
ISLAND NO. 476 (foot) (partly inundated)

592, 0

ROCK ISLAND-ST. LOUIS ENGINEER DISTRICT BOUND-
ARY.

594.6

595.3

595.3

596.1

KELLY ISLAND (head) (partly inundated).

596.4

597.1

KELLY ISLAND (foot) (partly inundated).

597.2

597.6

598.0

598. 4

598.9

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

598.9

REDS LANDING.

599.2

THOMAS CHUTE (lower end).

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

KICKAPOO ISLAND (head) (now inundated).

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

KICKAPOO ISLAND (foot) (now inundated).

WESTPORT, LINCOLN CO., MO.

WESTPORT ISLAND (foot) (partly inundated).

599.2

599.4

ISLAND NO. 486 (foot) (partly inundated).
ISLAND NO. 487 (foot)...

599.8 600.2

ISLAND NO. 489 (foot) (partly inundated)

STERLING ISLAND (head) (partly inundated).

576.8

577.7 577.8

578.0

578.0

578.8

ted).

578.8

579.0

579.3

579.5

579.6

579.8

579.8

580.0

580.0

582.0

582.3

583.2

583.6

584. 1

585.5

585.8

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.

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

ARRIVAL POST.

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

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

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

586.0

SLIM ISLAND (head).