Examination for obstructions in South Channel-Sextant angles at reef, rocks, and

location flag.

Appropriation for "Survey of northern and northwestern lakes."

Allotted for examination of shoals in Lake Erie:

Tridaily observations were made at Charlotte and at Oswego, N. Y., on Lake Ontario, from July 1, 1896, to June 30, 1897; at Erie Harbor, Pennsylvania, Ashtabula and Cleveland, Ohio, and Monroe, Mich, on Lake Erie; at Milwaukee, Wis., on Lake Michigan, and at Escanaba, Mich., on Green Bay, from July 1 to November 30, 1896, and from May 1 to June 30, 1897.

Daily observations were made at Sand Beach, Mich., on Lake Huron, and at Sault Ste. Marie and Marquette, Mich., on Lake Superior, from July 1, 1896, to June 30, 1897.

The accompanying table is a continuation of that published in the Annual Report of the Chief of Engineers for 1896, part 6, page 4067. The accompanying plates are continuations of those published in the Annual Report of the Chief of Engineers for 1892.

Monthly mean of water levels for the several stations below the planes of reference adopted in 1876.

Station.

1896.

1897.

July. Aug. Sept. Oct. Nov. Dec. Jan. Feb. Mar. Apr. May. June.

Charlotte
Oswego.
Erie.

Ashtabula

Cleveland.

3.15 2.95 3.36

3.55 3.74

3.82

Monroe

Milwaukee

3.18 3.00 3.38 3.56 3.80
3.30 3.09 3.41 3.65 4.02 3.99
2.93 2.87 3.20
4.99 4.97 5. 07

3.86

3.41

3.90 3.84

5. 12

5.34 5.39

Feet. Feet. Feet. Feet. Feet. Feet. Feet. Feet. Feet. Feet. Feet. Feet.
3.98 4.22 4.61 4.81 4.88 5. 13 5.27 5.26 4.72 4.15 3.59
4.02 4.16 4.64
4.87 5.13 5. 13 5.22 5.28 4.78 4. 14
3.70
3.48
3.58 3.72 3.25 2.85 2.40 2.36
3.79 3.80 3.34
4.02 3.82
4.10
5.40 5.32

3.42

2.85 2.48 2.39

5.15

5.29 5.41
2.69 2.62 2.77 2.93 3.16
2.77 2.76 2.81 3.04 3.35

5.33 5.42

WATER LEVEL OF LAKE ERIE.

REPORT OF COL. JARED A. SMITH, CORPS OF ENGINEERS, FOR THE FISCAL YEAR ENDING JUNE 30, 1897.

UNITED STATES ENGINEER OFFICE,
Cleveland, Ohio, July 26, 1897.

GENERAL: I have the honor to forward herewith record of water levels on Lake Erie for the fiscal year ending June 30, 1897.

The records were taken at the light-house, Monroe, Mich., and in the harbors at Cleveland and Ashtabula, Ohio, and Erie, Pa.

Very respectfully, your obedient servant,

Brig. Gen. JOHN M. WILSON,

JARED A. SMITH, Colonel, Corps of Engineers.

Chief of Engineers, U. S. A.

WATER LEVEL OBSERVATIONS FOR LAKE ERIE FOR THE FISCAL YEAR ENDING JUNE 30, 1897.

Monthly mean water levels for Monroe, Cleveland, Ashtabula, and Erie harbors, expressed in feet below the plane of reference adopted in 1876, that plane being the surface of high water of 1838, and 2.34 feet above the mean level, 1860 to 1875, inclusive:

Stations.

1896.

1897.

Monroe, Mich.

July. Aug. Sept. Oct. Nov. Dec. Jan. Feb. Mar. Apr. May. June.

2.25

Feet. Feet. Feet. Feet. Feet. Feet. Feet. Feet. Feet. Feet. Feet. Feet.
2.93 2.87 3.20 3.41 3.90 3.84 4.10 3.72 3.32 2.69 2.46
3.65 4.02 3.99 4.02 3.82 3.45 2.90 2.57
2.47
3.56 3.80 3.86 3.79 3.80 3.34 2.85 2.48 2.39
3.35 3.74 3.82 3.58 3.72 3.25 3.85 2.40 2.36

Cleveland, Ohio..

3.30 3.09 3.41
3.18 3.00 3.38
3. 15 2.95 3.36

WATER LEVEL OF LAKE ONTARIO.

REPORT OF MAJ. WILLIAM S. STANTON, CORPS OF ENGINEERS, FOR THE FISCAL YEAR ENDING JUNE 30, 1897.

UNITED STATES ENGINEER OFFICE,

Oswego, N. Y., July 28, 1897.

GENERAL: In compliance with letter of July 26, 1897, from your office, I have the honor to transmit herewith, in duplicate, the monthly means of the water levels of Lake Ontario at Charlotte and Oswego, reduced to the United States Lake Survey plane of reference for Lake Ontario. Very respectfully, your obedient servant,

W. S. STANTON, Major, Corps of Engineers, U. S. A.

Brig. Gen. JOHN M. WILSON,
Chief of Engineers, U. S. A.