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veys were made at Diamond Island 614 and at New Town, 618 miles below Cairo. Four bar-survey parties, on the small steamers Venus, Vulcan, Mercury, and Mars, were engaged on this work.

The following crossings were surveyed and buoyed when necessary, in addition to those where dredging was required:

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The steamer Search was used during the low-water season of 1910 as an inspection boat by the superintendent of dredging in examining the condition of the channel and directing the work of the dredges. The steamer Choctaw was also used for one trip in August. In addition to this supervision of the work by the superintendent on the trips of these boats, supplies and men were carried from Memphis to all the dredges and bar-survey parties in the field, and all shoal crossings were sounded. The soundings obtained on these trips are given in Table No. 4.

The river at Cairo was unusually low towards the latter part of May, the Cairo gauge reading 14.4 feet on May 25, 1911. This is the lowest May reading since 1895. On May 24, 1911, the dredge Gamma, in tow of the steamer Choctaw, was sent to Point Pleasant to be in readiness there should shoals develop. The survey boat Venus and party accompanied the dredge, and the outfit arrived at Point Pleasant on May 30. The steamer Leota made an inspection trip of the river from Memphis to upper Point Pleasant, leaving the fleet on May 24. The least depth found on this trip was 10 feet, at Round Lake Crossing 160 miles below Cairo. The dredge B. M. Harrod and survey boat Vulcan have been made ready at the fleet to go to Round Lake should it become necessary to dredge there.

Up to the date of this report no dredging has been required since the close of the low-water season of 1910, last December.

The following papers and plates accompany this report:

Money statements.

Abstract of contracts in force.

Commercial statistics.

Statement of charts issued and sold.

Table No. 1. Highest and lowest gauge readings in 1910, Mississippi River and tributaries.

Table No. 2. Maximum heights above mean Gulf level at high water and regular gauges on the Mississippi River from Cairo to Head of the Passes, with high water of 1903 for comparison.

Table No. 3. Cost of dredging operations, May 1, 1910, to April 30, 1911. Table No. 4. Depths over shoal crossings, Mississippi River below Cairo, lowwater season of 1910.

Table No. 5. Dimensions of channels through bars, Mississippi River below Cairo, dredging season of 1910.

Table No. 6. Summary of dredging operations, Mississippi River below Cairo during the low-water season of 1910.

Table No. 7. Highest gauge readings, Mississippi River and tributaries in 1911 to June 30.

Plate 1. Hydrograph of Mississippi River, Cairo, Ill., to Fort Jackson, La., June 1, 1910, to May 31, 1911.

Plate 2. Profile Mississippi River, Cairo Ill., to Head of Passes, Louisiana, high water of 1911. Also profiles of certain previous high and low waters. Appendix A. Laws affecting the Mississippi River Commission, July 1, 1910, to June 30, 1911. Respectfully submitted.

CHAS. L. POTTER,

Lieutenant Colonel, Corps of Engineers, United States Army,
Secretary Mississippi River Commission.

Col. WM. T. ROSSELL,

Corps of Engineers, United States Army,
Acting President, Mississippi River Commission.

MONEY STATEMENTS.

Appropriation for improving Mississippi River.

66

66

July 1, 1910, balance unexpended--
Amounts allotted from appropriation by river and
harbor act approved June 25, 1910 ("Mississippi
River Commission," $5,000; Surveys, gauges, and
observations," $45,000; Dredges and dredging,"
$35,000), allotments approved by Acting Secre-
tary of War July 6, 1910_.
Amounts allotted from appropriation by river and
harbor act approved Feb. 27, 1911 (" Mississippi
River Commission," $30,000; "Surveys, gauges, and
observations," $66,000; Dredges and dredging,"
$329,000), allotments approved by Assistant Secre-
tary of War May 3, 1911__.

66

Amounts transferred from allotments in charge of first and second districts officer and of third district officer, in payment of purchases of coal, credited to allotment for Dredges and dredging," as follows:

March, 1911 (first and second).

April, 1911 (third)---

June, 1911 (first and second) __

Amount transferred from appropriation for improv-
ing Arkansas River, Ark. (dredging), by Treasury
transfer settlement, for fuel and miscellaneous sup-
plies furnished dredging plant on Arkansas River
in 1907 and 1908, credited to allotment for
"Dredges and dredging," July, 1910---
Amount transferred from appropriation for removing
obstructions in Mississippi, Atchafalaya, and Old
Rivers, 1911, by Treasury transfer settlement, for
coal furnished the United States snag boat J. N.
Macomb, credited to allotment for "Dredges and
dredging," February, 1911---.
Amount transferred from appropriation for improv-
ing Mississippi River from mouth of Ohio River to
Minneapolis, Minn. (mouth of Missouri to Minne-
apolis, general improvement), by Treasury transfer
settlement, for expenses incurred in obtaining dis-
charge measurements of the upper Mississippi
River, credited to allotment for Surveys, gauges,
and observations," May, 1911.
Amounts transferred from appropriations for improv-
ing White River, Ark ($176.18), and for improving
Arkansas River, Ark. ($352.37), by Treasury
transfer settlement, for docking and repairing
United States snag boat C. B. Reese, credited to
allotment for "Dredges and dredging," June, 1911_-

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$85,000.00

425, 000. 00

12, 609.77
1, 941. 22
3, 837. 10

5,745. 61

60.00

285.00

$615, 693. 01

528.55

535, 007. 25

June 30, 1911, amount expended during fiscal year..

37, 453. 89
3,453. 02

July 1, 1911, balance unexpended__.
July 1, 1911, outstanding liabilities__.

July 1, 1911, amount covered by uncompleted contracts

July 1, 1911, balance available__.
10822°-ENG 1911-214

1, 150, 700. 26 444, 097.85

706, 602. 41

40, 906. 91

665, 695. 50

Appropriation for gauging waters of the Mississippi River and its tributaries.'

July 1, 1910, balance unexpended..

Amount allotted by Chief of Engineers, July 27, 1910, from permanent annual appropriation made by section 6 of river and harbor act of Aug. 11, 1888, as amended by section 9 of river and harbor act of June 13, 1902___

$1,984. 95

9, 600.00

June 30, 1911, amount expended during fiscal year--- $8, 744. 71
June 30, 1911, amount reverted to Treasury during
fiscal year.

11, 584. 95

546. 18

9, 290. 89

July 1, 1911, balance unexpended..
July 1, 1911, outstanding liabilities_

2,294. 06

July 1, 1911, amount covered by uncompleted contracts

945. 48
23.42

July 1, 1911, balance available____

Amount that can be profitably expended in fiscal year ending
June 30, 1913, exclusive of the balance unexpended July 1, 1911

968.90 1,325. 16

9, 100. 00

Itemized statement of expenditures during the fiscal year ending June 30, 1911, submitted in compliance with requirement of section 6 of river and harbor act of Aug. 11, 1888.

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Office expenses and contingencies:

Pay of assistant and junior engineers, recorders, and clerks

Stationery, printing, office rent, etc-_

1, 847. 08
349.83

2, 196. 91

8, 744. 71

CONSOLIDATED STATEMENT OF APPROPRIATIONS EXPENDED UNDER THE SECRETARY, MISSISSIPPI RIVER COMMISSION, TO JUNE 30, 1911.

Appropriation for gauging waters of the Mississippi River and its tributaries.

Allotments from general appropriations for examinations, surveys,

and contingencies of rivers and harbors by acts of-
Mar. 3, 1871 (allotment Apr. 11, 1871).
June 10, 1872 (allotment July 11. 1872).

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$5,000.00

5,000.00

5,000.00

5, 000. 00

5, 000. 00

5, 000. 00

5,000.00

5,000.00

5,000.00

5,000.00

5, 000. 00

June 14, 1880_.
Mar. 3, 1881.
Aug. 2, 1882.

1 The custody and care of the gauges maintained under this appropriation were assumed by the Mississippi River Commission Feb. 11, 1901, on which date they were transferred to the secretary, under authority of Secretary of War, dated Jan. 25, 1901.

Deficiency act of Mar. 12, 1884.

Specific appropriations by river and harbor acts of

July 5, 1884_

Aug. 5, 1886__.

Allotted from specific appropriation by river and harbor act of Aug.
11, 1888 (allotment Oct. 17, 1888).
Deficiency act of Oct. 19, 1888-

Allotments from permanent indefinite appropriation made by section
6 of river and harbor act of Aug. 11, 1888, for fiscal years, viz:
1890 (allotment Aug. 23, 1889)

1891 (allotment Aug. 19, 1890, $8,700, less $3,518.34 withheld in United States Treasury under ruling that only $6,000 can be expended each fiscal year).

1892 (allotment July 17, 1891) 1893 (allotment July 15, 1892) 1894 (allotment July 18, 1893) 1895 (allotment June 5, 1894). 1896 (allotment June 4, 1895) 1897 (allotment May 13, 1896)

1898 (allotment June 16, 1897).

1899 (allotments May 27, 1898, $5,500; July 12, 1898, $500)

1900 (allotment June 1, 1899)

$2,100.00

5, 000, 00

5, 000. 00

8, 700.00 3,600.00

9, 000. 00

5, 181. 66 5, 100.00

5,500.00

5,500.00

5,500.00

5,500.00

5,500.00

5,500.00

6, 000, 00

5, 500.00

1901 (allotment July 2, 1900).

6. 000. 00

1902 (allotment July 31, 1901) Allotments from permanent annual appropriation made by section 6 of river and harbor act of Aug. 11, 1888, as amended by section 9 of river and harbor act of June 13, 1902, for fiscal years, viz: 1903 (allotment July 23, 1902, $9,600, less $500 allotted Aug. 2, 1902, to St. Paul (Minn.) district).

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Appropriation for waterway from Lockport, Ill., to St. Louis, Mo.

$25,000.00

Act of June 13, 1902 (river and harbor) –-
Amount transferred from allotment for " Survey of Illinois and Des
Plaines Rivers, Ill.," as reimbursement___

1,093. 40

Total___.

26, 093. 40

Expended to June 30, 1906___

$22, 291. 23

Unexpended balance carried to surplus fund on June 30, 1909, under the provisions of section 10 of sundry civil act of Mar. 4, 1909--

3, 802. 17

26, 093. 40

Abstract of contracts in force June 30, 1911, improving Mississippi River, Mississippi River Commission, secretary's office.

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NOTE.-Each stretch is treated as a separate river, and tonnage carried between ports on different stretches will appear in the statistics of all intervening stretches; consequently the sum of the tonnage carried in the four stretches does not represent the total traffic on the river as a whole.

TABLE NO. 2.-Receipts and shipments at principal ports.

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3 Includes exports and imports and the domestic coastwise trailic as far as reported.

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