ELLISON CREEK DIVERSION DITCH (enters slough behind Burlington
Island)

SHOKOKON, HENDERSON CO., ILL

CRAIGEL ISLAND (head).

CARMAN, HENDERSON CO., ILL. (263). Railroad: Chicago, Burlington
& Quincy

TWO MILE ISLAND (head) (in Shokokon Slough).
CRAIGEL ISLAND (foot)...

SPRING CREEK.

452. 1

452.8 452.9

452.9

453.0

454.0

454.3

454.6

454.8

455.8

455.9

456.3

456.5

SKUNK SLOUGH (lower end).

456.8

456.9

457.0

TWO MILE ISLAND (foot) (in Shokokon Slough)
SULLIVAN SLOUGH (lower end).

CLIFFORD ISLAND (foot)..

HONEY CREEK (enters Shokokon Slough)

TURKEY CHUTE (upper end).

PADDY ISLAND (foot) (in Shokokon Slough)
TWIN ISLAND (foot).

SKUNK RIVER (mouth)

457.0 PEELS ISLAND (head) (part of mainland). BURLINGTON ISLAND (foot).

457.7

457.7

457.7

458.4

MAPLE ISLAND (foot).

SHOKOKON SLOUGH (lower end).
TURKEY ISLAND (foot)

458.4 TURKEY CHUTE (lower end).

THOMPSONS SLOUGH (upper end).
CAMP CREEK.

GRAPE ISLAND (foot)

THOMPSON ISLAND (foot).

458.7

459.7

460.4

460.8

460.8

THOMPSONS SLOUGH (lower end).

462.4 DALLAS CITY HANCOCK CO., ILL. (1112). Railroads: Atchison, Topeka, & Santa Fe; Chicago, Burlington & Quincy.

464.3

464.5

PONTOOSUC, HANCOCK CO., ILL. (199). Railroad: Atchison, Topeka

& Santa Fe.

SPILLMAN CREEK.

437.2

437.3

438.6

438.7

438.8

439.3

439.7

ISLAND NO. 368 (head) (now inundated).

441.5

441.7

441.7

441.9

442. 4

442. 4

442. 5

442.6

442.6

443.0

443. 1

443.4

443.7

443.7

444. 1

444. 2

445. 4

445. 4

446. 2

439.8

440.5 440.5 440.6 440.6 440.7

DASHER SLOUGH (upper end) (closing dam near upper end).

GAUGE, OQUAWKA (see p. 276).

OQUAWKA, COUNTY SEAT OF HENDERSON CO., ILL. (777). Rail-
road: Chicago, Burlington & Quincy.

OQUAWKA ISLAND (ISLAND NO. 365) (now inundated)

FERNAL ISLAND (head) (partly inundated).

LONG ISLAND (foot)

OQUAWKA ISLAND (ISLAND NO. 365) (foot) (now indundated)
EAGLE ISLAND (head) (now inundated)

FERNAL ISLAND (foot) (partly inundated)
ISLAND NO. 370 (head) (now inundated)
ISLAND NO. 369 (foot) (now inundated)
ISLAND NO. 368 (foot) (now inundated).
EAGLE ISLAND (foot) (now inundated)
DASHER SLOUGH (lower end).
SWIFT SLOUGH (upper end).

ISLAND NO. 370 (foot) (non inundated).
HENDERSON RIVER (old mouth).

RAG ISLAND (ISLAND NO. 371) (head) (partly inundated)
SLIM ISLAND (foot) (partly inundated).

GAUGE, LOCK AND DAM NO. 18 (upper) (see p. 276)

GAUGE, LOCK AND DAM NO. 18 (lower) (see p. 276).

YELLOW SPRING CREEK.

RAG ISLAND (ISLAND NO. 371) (foot) (partly inundated)
HENDERSON RIVER (mouth).

SWIFT SLOUGH (lower end).

OTTER SLOUGH (upper end)

PRAIRIE (DREW) CHUTE (upper end) (present main channel).
OTTER ISLAND (head).

TURTLE ISLAND (foot).

O'CONNELL SLOUGH (upper end) (closing dam near upper end)
O'CONNELL ISLAND (head).

OTTER ISLAND (foot).

RUSH CHUTE (upper end) (closing dam near upper end)

OTTER SLOUGH (lower end) (closing dam near lower end)
RUSH ISLAND (foot).

447.7 BABY RUSH ISLAND (foot).

WILLOW BAR ISLAND (foot).

O'CONNELL ISLAND (foot)

O'CONNELL SLOUGH (lower end)

BURLINGTON HIGHWAY BRIDGE (see p. 227)

Clearances: Horizontal 470.0 feet; available 470.0 feet. Vertical (mid 300
feet) 65.5 feet above pool, 53.2 feet above computed high water.
BARGE TERMINAL (Municipal) (operated by Inland Waterways Corpora-
tion) (see p. 14).

LOCK AND DAM NO. 18 (see p. 183) (for regulations see p. 16). Lock on left
bank, 110' x 600'.

410.5

BURLINGTON, DES MOINES CO., IOWA (26,719). Principal industries
are clothing and wood products. Railroads: Chicago, Burlington & Quincy;
Chicago, Rock Island & Pacific.
CARTHAGE JUNCTION, HENDERSON CO., ILL. Railroad: Chicago,
Burlington & Quincy.

449.9

449.9

450.7

450.8

450.9

GAUGE, BURLINGTON (see p. 276)

CHICAGO, BURLINGTON & QUINCY RAILROAD BRIDGE (see p. 226).
Clearances: Horizontal 153.0 feet; available 153.0 feet. Vertical (to aerial
wires) 77.4 feet above pool, 65.5 feet above computed highwater.

PRAIRIE SLOUGH (upper outlet).

SHOKOKON SLOUGH (upper end).
BURLINGTON ISLAND (head).

R HR

404.0

L

403. 1

403. 1

403. 1

451.2

PRAIRIE SLOUGH (lower end).

410. 4

410.4

410.0

409.9

409.6

409.3

409. 3

408.9

408.8

407.6

407.6

406. 8

406.8

406.8

406. 7

405.4

405. 3

405. 2

405. 2

405.2

404.7

404.7

404, 2