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Tabulation of precise level results, Blair, Vebr., to De Witt, Mo., 1893—Continued.

[blocks in formation]

Km.

Um.

m.

Mm.

Feet.

Meters.

150

Um. Mm. 0.1 2.3

Dir Rev

Um. Mm. 2, 398.3 0.2 2, 398.7 + 0.2

135.8704

445. 773

T.

P. B. M. 304 C=

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T. B. M.53

29

923. 3 + 0.3 922.6 - 0.4

Dir Rev

0.2

2. 3

134, 9474

442, 745

442. 949 +0. 204

T.

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Bench inark.

Determined from.

Length

Distance of

from

initial stretch.

point.

Direction.

Difference Resid of eleva nals

tion.

*T. B. M.53

T. B. M.52

Mean.

2, 398. 5

Mean

923. 0

T. B. M.54

T.B. M. 52

1, 274 !

13, 128

T. B. M.57

* Gange DN. Rulo, Nobr.

Mean

673. 2

[blocks in formation]

40

0.+

2.7

137. 2540

450. 312

Dir Rev

541.0 + 0.6 542.1 0.5

+ +

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ENG 94

T.B. M. 59

T. B. M. 57

352

15. 105

3.7

0.7

Dir Rev

2.8

136, 7049

448.511

T.

573.0 1.0 575, 0 + 1.0

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Mean

566.5

*P. B. M. 304 D.

T. B. M. 58

Mean

to

541.6

Mean.

899.4

* Cap. P. B. M.304 E =

1. T. B. M. 59

* Cap. P. B. M. 228 =

7.

T. B. M. 60

T. B. M. 61

T. B. M. 60

1, 222

1. 217

+ 3, 307, 3 + 1.1
+ 3, 309. 6 1.2

Rev
Dir

T. B. M. 62

T. B. M. 61

1,022

2. 269

_ 0.6

+ 0.51

Dir
Rev

+ 7, 437.0 + 0.4
+ 7, 437.8 -- 0.4

[blocks in formation]

Tabulation of precise level results, Blair, Nebr., to De Witt, Mo., 1893Continued.

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[blocks in formation]

*Cap. P. B. M. 171A = -99.1 T. B. M. 68

88

0.0

1.3

68. 9843

226. 328

T.

T. B. M. 68

762

3. 387

+ 3.5

0.3

1.3

70. 5504

231. 467

T.

462, 6 + 777.7 0.0

777. 7 0.0
+

777.7
+ 2, 343. 3 + 0.5 - 3.3
+ 2, 344,3 -0.5
+ 2, 343.8

853.7 + 0.9 - 4.1

855.4 - 0.8
+ 854.6
546.7

-- 0.1 3,9
547.0 + 0.2

[blocks in formation]

+ 4.4

0.6

1.5

71. 4050

234. 270

T.

Rev
Dir

+
+

T. B. M. 70

61

3. 990

Moan
Rev
Dir

+ 4.3

0.1

1.5

70.8582

232. 476

T.

[blocks in formation]

T. B. M. 08

* P. B. M. 171 A =*.

T.B. M. 69

T. B. M. 70

T. B. M. 71

*Gauge B. M DeWitt, Mo.

T. B. M. 73

P. B. M. 171 B = 3

De Witt.

+
+

386.7 - 0.1
386.4 + 0.2

[blocks in formation]

+

386.6

[blocks in formation]

APPENDIX A 3.

REPORT ON MEASUREMENT OF BRIDGES, 1894.

Lowest points of superstructure of bridges orer the Vissouri Rirer completed since June

30, 1893. All elevations are above St. Louis directris according to the precise levels of 1892. T. B. M. = tem

porary bench mark of precise level survey. "Bench marks to which referred are reduced to precise level elevations.)

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ANNUAL REPORT OF A. II. BLAISDELL, ASSISTANT ENGINEER, 1894.

OFFICE MISSOURI RIVER COMMISSION,

St. Louis, Yo., June 30, 1894. SIR: I have the honor to submit the following report on the water gauges maintained by the Missouri River Commission during the fiscal year ending June 30, 1894.

The accompanying table gives the location of each gauge in miles above the mouth of the river and the time it was maintained during the year.

The distances below Sioux City, Iowa, are measured on the low-water channel line of the Missouri River Commission maps of 1890, and that to the upper river gauge at Townsend, from the various maps of surveys made by the Commission and by Capts. Hodges, Powell, and Maguire, Corps of Engineers, V. S. A., between 1889 and 1892, inclusive.

The Missouri River Commission at the end of the year maintains twenty-three permanent and two temporary gauges; the latter being read in connection with the works in progress on tho First Reach, at Ewings Landing and Gasconado, Mo.

The Weather Burean gaugo at Hermann was also read during a portion of the year, before the removal of the office of Division Engineer S. Waters Fox to Gasconade.

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