..

18.3

9.8
12.5
12.5
10.8
80.8
12.6
17.8
25.8
16.8
15.3
16.3
16.8
18.8
19.9
15.9
22.9
18.9
23
27
25
26
38
17.5

15.3
6.8
7.5
7.5
6.7
26.7

8.7
12.6
20.6
10.8

9.8
10.8
10.5
12.5
13.3

9.3
16.3

7.3
15.8
19.5
17.5
18.4
30.4
10.6

1850,
18.6 1854.
10.1 1857.
18

1857.
13
11.3
31.8 1851, 1852 and 1853.
13.1
18.3

1857.
26.3
17.1

1857.
16.1
17.1 1858.
17.4

1856.
19.4
20.7
16.7

1856 and 1857.
23.7
14.7
23.5
27.5 1855 and 1856.
25.5
26.5
38.5
18.2

Capt. Gilmer, U.S.

Engineers.—1856.
22.5
81
24.5
45.5

1855 and 1856.

}1851 and 1852.

1855.

}.

22.1
30.6
23.8
44.8

14.7
23.2
16.3
87.3

HARBORS AND RIVERS OF THE U. 8.-(Continued.)

LEAST WATER IN CHANNEL WAY.

}1855, 1856 and 1857.

St. John's River, Fla.,.

: : :

25.55

Florida Reef,

}

1852.

Mean.

Spring tides.
Places between which depths are given.

Low water. High water. Loro water. High water.
Feet.

Feet.
Feet.

Feet. Authorities.
Turtle River up to Blythe Island,..

21
27.8
20.3

28.5 1855 and 1856. Main ship channel over bar,

14.5 20.8 14

20.7 Channel up to St. Mary's,..

19 24.9 18.5

20.2 Over bar at entrance,

7 11.5

6.4

11.9 Channel passing up towards Jacksonville,

1855.
23
25.1

22.5
Approaches to the inside of the reef:
Cape Florida lighthouse, bearing W. SW. %W.

20
21.5
19.9

21.7 Entrance to the northward of Fowey Rocks; Soldier Key bearing SW.X W., 19

20.5
18.9

20.7
Entrance to Legaré anchorage,

20
21.5

19.9 Turtle Harbor entrance, .....

26 27.5 25.9

27.7 Channel inside the reefs (Hawk Channel) from entrance off Cape Florida

1854. lighthouse to Rodriguez Key,..

11
12.5
10.9

12.7
Anchorage one mile from Indian Key,.

21
22.8
20.7

23.1
Bahia Honda Channel, west point of Bahia Honda bearing N. NW.

18
19.3
17.7

19.5
Key Sambo Channel, between Middle and Western Sambo,..

34
35.3
83.7

85.5 Inside the reef, and steering w. by N. for buoy,.

14
15.3
13.7

15.5
Main ship channel to middle buoy on shoals,.

27
28.3
26.9

28.5 From shoals to anchorage,..

81.3 29.9

31.5 East channel, entering,

30
81.3
29.9

31.5
On course N. NW. * W., (light on O'Hara's Observatory,) and passing
between shoals, .....

28
29.3
27.9

29.5 From 14 feet shoals to anchorage,

80 81.8 29.9

81.5 At anchorage,...

27 28.3 26.9

28.5

1850 and 1851, Rock Key Channel,

20 21.3 19.9

21.5 Sand Key Channel,

27 28.3 26.9

28.5 West Channel,...

80
81.3
29.9

81.5
Northwest Channel up to abreast Northwest Light,

15
16.8
14.9

16.5
Over Northwest Channel bar,

12
13.3
11.9

18.5 Northwest Channel,..

45 46.2 44.8

46.4 Southwest Channel,..

55.2 58.8

58.4

Key West,

30

Tortugas,

Tampa Bay,

Over bar,.....

Waccasassa Bay,
Cedar Keys,

20.4
18.4
10.6
11.6
13.6
11.2
14.2
17.2
9.2

St. Mark's

18.8
16.8
7.7
8.7
10.7

8.7
11.7
14.7
6.7

19
17
8
9
11

9
12
15

7
15.5
14
13
19
13
39
10
13
7
7
22.5
27
21
21
36
12
6.5
7.5

14

Channel between Egmont and Passage Key,
Channel up to anchorage,
Main channel,
Northwest Channel over bar,
Over bar,...
Channel at middle buoy,
In mid-channel, off lighthouse,

Up to Fort St. Mark's,.
St. George's Sound, East entrance over bar,

Main ship channel,
Swash Channel,

At anchorage,
Apalachicola,..

Over bar,*
In mid-channel, off beacon on St. Vincent's Island,

Up to anchorage,
St. Andrew's Bay, Main ship channel, over bar,*

Swash Channel, over bar,..

West Pass, over bar,.
Pensacola,.

Over bar,*
From bar to Navy Yard,.

Off wharf at Pensacola, .
Mobile Bay and River,.. Over outer bar,*

Main ship channel to Fort Morgan,..
To the upper fleet,.

Grant's Pass,
Mississippi Sound,.. From Grant's Pass to Pascagoula mail wharf,*

Horn Island Pass, over bar,
Anchorage inside Horn Island,

Up to Pascagoula mail wharf,
Ship Island Harbor, Channel,

Northwest Channel,

Anchorage, Man-of-war Harbor,.
Cat Island Harbor,.. Ship channel,*.

South Pass,
Shell Bank Channel,

8
8
23.5
"28
22
22
87
18
7.5
8.7
16.2
20.2

9.2
20.3
20.8
19.3
17.3
15.3
16.5

14.3
8.3
8.3
23.8
25.3
22.3
22.2
37.2
13.2

7.8
9
16.5
20.5

9.5
20.6
21.1
19.6
17.6
15.6
16.8

1847.
1851.
1653.

}

1552 and 1853.

1848.

8
19
19.5
18
16
14
15.2

}

1848.