307.3

307.7

MAQUOKETA RIVER (mouth).

ISLAND NO. 256 (foot).

APPLE RIVER ISLAND (ISLAND NO. 257) (head)
SMITH CREEK (enters slough).

ISLAND NO. 258 (head)

SAVANNA (U. S.) PROVING GROUNDS.

307.8 APPLE RIVER (mouth) (enters slough behind Island No. 257) APPLE RIVER ISLAND (ISLAND NO. 257) (foot).

ARNOLDS LANDING.

308.2

308.7

310.3

310.9

MARCUS, CARROLL CO., ILL. Railroad: Chicago, Burlington &
Quincy

ISLAND NO. 260 (foot)

311.4 ISLAND NO. 261 (foot).

311.4 ISLAND NO. 258 (foot).

311.7

311.7

312.4

312.7

313. 1

313. 1

313.9

314. 1 314.8

Railroad: Chicago, Mil

INDIAN ISLAND (ISLAND NO. 262) (head).
LAINSVILLE, JACKSON CO., IOWA.
waukee, St. Paul & Pacific.

BEAVER CREEK.

KELLERS ISLAND (ISLAND NO. 264) (head) (partly inundated).
SANTA FE ISLAND (ISLAND NO. 263) (foot) (partly inundated).
RUSH CREEK.

SAVANNA BAY (mouth).

ISLAND NO. 266 (foot) (partly inundated)
ISLAND NO. 265 (foot) (partly inundated).

Creek

Miles below

GAGE, LOCK AND DAM NO. 12 (upper) (see p.289).

MENOMINEE SLOUGH (lower end)..

SINSINAWA RIVER (mouth) (enters Deadmans Slough)
TETE DU MORT CREEK.

ISLAND NO. 235 (foot) (partly inundated)

ISLAND NO. 238 (head) (partly inundated).
DEADMANS SLOUGH (lower end).

Minne

Chart No. 37

apolis

284.2

ISLAND NO. 233 (foot) (partly inundated).

284.3

284.3

285.8

286.0

286.0

286. 2

286. 4

286. 4

286. 6 286.8

286.8

287.2

287.4

288. 0

288. 0

289.0 289.0

289.4

289.4

289.8

289.8

291.0

291.0

291. 1

291.1

291.9

292.1

292. 1

292.6

293.3

293. 3

293. 6 293.6 293. 6 295. 1

296. 2 296.3

HARRIS SLOUGH (upper end).

ISLAND NO. 239 (head) (partly inundated).

GEARS FERRY, JO DAVIESS CO., ILL. (on Harris Slough).

GORDONS FERRY, JACKSON CO., IOWA. Railroad: Chicago,
Milwuakee, St. Paul & Pacific.

GAGE, GORDONS FERRY (see p. 289).

ISLAND NO. 238 (foot) (partly inundated).

PORTAGE, JO DAVIESS CO., ILL. (on Harris Slough). Railroad:
Illinois Central.

GALENA RIVER (mouth) (empties into Harris Slough)

GALENA JUNCTION, JO DAVIESS CO., ILL. (on Harris Slough).
Railroads: Chicago, Burlington & Quincy; and Chicago Great West-

ern

STONE SLOUGH (upper end) (closing dam near upper end).
ISLAND NO. 241 (head) (partly inundated).

AIKEN, JO DAVIESS CO., ILL. (on Harris Slough). Railroad:
Chicago Great Western..
YEAGER CREEK.

HARRIS SLOUGH (lower end) (junction with Stone Slough).

SMALLPOX CREEK (enters Stone Slough behind Island No. 241).
BELLEVUE SLOUGH (upper end) (closing dam near upper end).
ISLAND NO. 243 (head) (partly inundated).

ISLAND NO. 241 (foot) (partly inundated).
STONE SLOUGH (lower end)..

ISLAND NO. 242 (foot) (partly inundated).

CROOKED SLOUGH (upper end) (closing dam near upper end) (now
within pool).

ISLAND NO. 246 (head) (partly inundated).

SMITHS, JACKSON CO., IOWA. Railroad: Chicago, Milwaukee,
St. Paul & Pacific.

SPRUCE CREEK.

ISLAND NO. 246 (foot) (partly inundated)
ISLAND NO. 243 (foot) (partly inundated).
BELLEVUE SLOUGH (lower end)

LOCK AND DAM NO. 12 (see p. 199) (for regulations see p. 21). Lock
on right bank, 110' x 600'..

BELLEVUE, JACKSON CO., IOWA (1771). Railroad: Chicago,
Milwaukee, St. Paul & Pacific.