Descriptions and elevations of bench-marks on the Missouri River, etc.—Continued.

496 (57) 497 (56)

On southeast side of 2-foot cottonwood, 20 feet from edge of high
bank, 1,200 feet below head of open shore bar, 600 feet below K 297
On river side of 2-foot cottonwood, 240 feet from bank, 200 feet above
a sand ridge ranging back at right angles with the river, and rising
20 feet above the bottom, 400 feet below K 291

499 (54) 500 (53) Saint James.

498 (55) On 2.9-foot elm, 275 feet from river bank, directly back from K 284,
200 feet from Potter's A 11, 200 feet below foot of shore bar..
B. M. "C"-equals bench of Vermillion construction party: on 1.7-
foot linn, 50 feet from river, 1,500 feet below K 283
On 1.6-foot slippery-elm, on side of bluff, 100 feet from river, near
head of shore bar, immediately back from B. M. "C "above..
On river side of 2-foot cottonwood, at foot of bluff, on north side of
road running down-stream from Saint James, Nebr., 90 feet from
river, 100 feet above mouth of small creek, one-quarter mile below
Bow Creek

B. M. "B" equals "B. M. 1" of Vermillion construction party; on
2.5-foot cottonwood, 200 feet above bench 500

744.929

502 (51)

501 (52) On 3.3-foot cottonwood, 250 feet from bank of chute behind Saint Helena Island, and 1,500 feet above its foot, 930 feet above R. B. O 370...

On 1.7-foot cottonwood, 150 feet from bank of chute behind Saint
Helena Island and one-half mile below its head, 1,000 feet above
R. B. 365...

503 (50) 504 (49) Saint Helena.

On 10-inch twin elm, 50 feet from river, at foot of bluff, opposite K
273, 1,100 feet below landing at Saint Helena, Nebr

On 3-foot cottonwood, 40 feet west of wagon road, 170 feet from river,
1,200 feet above point where river comes to bluff, above Saint Helena,
Nebr.....

505 (48) 506 (47) 507 (46)

508 (45)

On 1.3-foot cottonwood, 300 feet from river, directly back from ▲ 142,
at head of shore bar, above Saint Helena, Nebr
On north side of 2.5-foot cottonwood, in cotton wood timber, 200 feet
from river, 400 feet below foot of shore bar, 600 feet below K 253..
On northeast side of 1.7-foot cottonwood, at foot of bluff, where river
first comes to right bank bluff below Yankton, Dak., 450 feet from
river, near mouth of Dorion Creek. This tree is the eighth large
cottonwood between the creek and the bluff, counting from the
river up

On east side of 1.2-foot cottonwood, 100 feet back from high-water
bank, one-half mile from edge of shore bar, about opposite K 248.
This tree is 300 feet below upper end of a grove of large cottonwood
trees, 32 miles below Yankton, Dak. Blaze on river side of tree.
( U.S. B. M.
45

(44) On 1.7-foot cottonwood, southeast side of tree, near, probably less
than 200 feet from, bench 508.

Gauge B. M., at Yankton, Dak.; on head of nail in middle of window-
sill on north (down-river) side of August Kunze's brick dwelling,
at brick-yard, one-quarter mile below railroad shops...

Yankton.

768.761

896. 1

509 (44) On 1-foot water elm, on side of bluff, 75 feet from river, 350 feet above K 230, one-quarter mile above point where river leaves bluff, about 4 miles above Yankton, Dak

775.093

900.9

510 (43) 511 (41) 512 (40)

On 2.1-foot cottonwood, 300 feet from river, 400 feet above A 122
On east side of quadruple box-alder, 200 feet from river, at K 216, 150
feet west of creek, on slope of the high bank of the creek bottom
On 2-foot elm, on side of bluff, 100 feet from river, at point where
river leaves bluff, 450 feet below K 212

513 (38)

On southwest side of 2-foot cottonwood, in body of large cottonwood
timber, behind and 700 feet below head of willow bar, 400 feet
from bench between cottonwoods and willows, 800 feet from river,
about opposite B 191....

514 (37) On 1.5-foot elm, 20 feet from foot of bluft, in edge of woods, just below
swamp, 300 feet from river, 550 feet below K 195, about one-quarter
mile below point where river leaves bluff, below Bonhomme Island,
Dakota.

515 (36) 516 (35) 517 (34)

518 (33) Bonhomme.

On south side of 2-foot elm, 40 feet from river, at foot of bluff, at mouth
of chute behind Bonhomine Island, Dakota, 1,300 feet above K 193
On 3.3-foot cottonwood, 500 feet from river, 1,000 feet above 104,
directly back from R. B. © 252.

On 3-foot cottonwood, on Bonhomme Island, 300 feet from river. 200
feet above R. B. © 248, 3,000 feet below head of Bonhomme Island,
Dakota...

On southwest side of 2.1 foot cottonwood, 500 feet from river, 700 feet
northeast of ▲ 100, a large solitary tree in prairie, about 14 miles !
southeast of Bonhomme, Dak..

Descriptions and elevations of bench-marks on the Missouri River, etc.—Continued.

519 (32) On 2.5-foot elm, 100 feet from foot of bluff, 400 feet from river, 2,500
feet above Dodson's Landing, 3,000 feet above 96; near point
where river leaves bluff, 4 miles above Bonhomme, Dak. N. B.-
This bench is erroneously numbered on the tree "31".
On 2.5-foot cottonwood, 1,000 feet from river, directly back from A 82. 799. 692
On 2-foot cottonwood, reference tree to A 82, 300 feet from river; one
of a group of scattering trees at foot of prairie, one-fourth mile
above Springfield, Dak.

Feet. 806.576

Miles. 9225

929.4

801.036

520 (31) 521 (30) Springfield.

522 (29)

523 (28) Running Water.

524 (27)

525 (26)

526 (25)

527 (24) Niobrara

River. 528 (23)

529 (22)

On 3-foot cottonwood, 130 feet from river, in small bottom, just above
mouth of Lost Creek, 2,000 feet below mouth of Bazil Creek, 1,400
feet below K 152

On 1.5-foot twin cottonwood, 50 feet back from bank between willow
flat and prairie, 380 feet from outer edge of willows, 700 feet from
water, three-fourths mile below Running Water, Dak. This tree
is the second from lower end of group of large cottonwoods oppo-
site and below Running Water, Dak.

On 1.7-foot cottonwood, in willow flat, 100 feet from edge of prairie,
1,200 feet from outer edge of shore bar, opposite old town of Nio-
brara, Nebr., and the United States water-gange at Running
Water, Dak

On 1.2-foot elm, on bluff side, in ravine, 150 feet above ferry landing,
at Running Water, Dak

On 2.1-foot cottonwood, 300 feet from river. 250 feet above R. B. 169,
2,800 feet below landing for Niobrara, Nebr.; the uppermost of a
group of large cottonwoods, about 1 miles below mouth of Nio-
brara River, Nebraska.

On 1.7-foot red elm, on bluff side, 100 feet from river, three-eighths
mile above mouth of Niobrara River, Nebraska...

On east side of 1.1-foot cottonwood, on island, 500 feet from river, at
head of open bar, 40 feet west of bench between cottonwoods and
bar, just above K 130, 14 miles above mouth of Niobrara River,
Nebraska
On 1.3-foot water elm, forking 9 feet from ground, lone tree in prairie
behind willow bar, 180 feet from edge of high-water bank, 850 feet
from edge of bar, opposite K 128. N. B.-This bench is erroneously
numbered on the tree "25"

530 (22) On 3-foot elm, 200 feet from bank, 270 feet above K 121, 1,270 feet be-
low mouth of small stream, opposite A 58..

On west side of 3.5-foot cottonwood, 460 feet from river, near south-
ern line, and about one-quarter mile below the head of belt of small
cottonwoods and willows between river and prairie opposite and
above the mouth of Chouteau Creek, 800 feet below K 109
On 1-foot cottonwood, on side of bluff, at mouth of small stream, 2,500
feet below A 44, back from K 100.

531 (21) Chouteau Creek.

532 (20)

820.496

953.

533 (19)

On west side of 2.5-foot cottonwood, in ravine, 120 feet from river, 800
feet below K 96.

534 (18) 535 (17)

536 (16)

537 (15) Yankton Agency. 538 (14)

On 1.7-foot cottonwood, at foot of bluff, 210 feet from river, at point
where river first comes to bluff below Yankton Agency, Dak
On 1.3-foot cottonwood (one of a group of three), on edge of high
bank behind willow bar, 225 feet from river, 300 feet below K 75,
one-half mile below Yankton Agency, Dak

On 10-inch red elm, in ravine, 200 feet from river, at K 91..
On west side of 3-foot cottonwood, on upper side of ravine and dry-
water course, 100 feet from river, at sounding stake P. 2, about 700
feet above 36

On northwest side of 2-foot cottonwood, on edge of bench between
cottonwood belt and prairie, 260 feet from high-water bank, one-
half mile from outer edge of shore bar, one-quarter mile above
Yankton Agency, Dak

829.539

96

539 (13)

540 (12) 541 (11)

On west side of 1.5-foot ash, 160 feet from river, 800 feet from foot of
bluff, opposite A 28, between river and small clump of wllows..
On 1.3-foot twin cottonwood, on bluff side, 30 feet from bank in mouth
of small ravine, about 1,000 feet below A 24

96

Horizontal furrow in head of copper bolt leaded into point of granite
bowlder which protrudes from bluff on east side of small ravine
opening on the river 200 feet below K 52

850.031

97

542 (10)

A 14..

Horizontal furrow in head of copper bolt leaded into northeast ex-
posure of large mass of porous rock lying under the bank 450 feet

543 (9)

On 1.3-foot cottonwood, at foot of bluff, near lower end of shore bar,!
where river first comes to bluff, below Fort Randall, Dak., 640 feet
above K 41

On 8 inch cottonwood, 75 feet from edge of bank, 200 feet from river,
550 feet above head of large shore bar, 920 feet above R. B. 31....
On 5-inch twin cottonwood, one fork of which, its top cut off, forms
the bench, 200 feet from river, 25 feet back from high-water bank,
opposite A 8, 3 miles below Fort Randall, Dak..

546 (6) On 1.7-foot cottonwood, 80 feet from high-water bank, 150 feet from
river, 350 feet below head of shore bar, 125 feet below R. B. 24, 2
miles below Fort Randall, Dak

834.644

837.662

838.020

Descriptions and elevations of bench-marks on the Missouri River, etc.-Continued.

On south side of 2.1-foot elm, 425 feet from river, 125 feet below shal-
low dry slough, 500 feet above R. B. 20, 1 mile below Fort Ran-
dall, Dak
Top of fourth course of masonry above foundation at northwest cor
ner of north wing of stone building used as "Christ Church" and
"Echo Lodge No. 2," Fort Randall, Dak. A cross (+) is cut into
the north face of the building about 1 inch below the bench.....
B. M. "A"-cross (+) ent into top of foundation at southwest corner
of south wing of above building

Feet. 839.489

Miles. 977.7

889.303 978.8

886.450

549

(3)

On 1.5-foot water elm, on side of bluff, just east of wagon road lead-
ing up from saw-mill at landing to Fort Randall, Dak., about 300
feet from river

845.456

Gauge B. M.-nail in cottonwood, on bank above gauge at Fort Ran-
dall, Dak.........

842.705

550

(2)

On 1.7-foot white elm, forked 2 feet from ground, 120 feet from river,
on east side of ravine opening on river, 50 feet above sounding stake
P.1

870.262

980.7

551

(1)

552 (91)

On 6-inch twin white elm, 10 feet from bank, 30 feet from river, on side
of bluff, 40 feet above small ravine, 800 feet above 2
On southwest side 16-inch elm, on Chicot Island, 4,000 feet above its
foot, 240 feet from river...

On 48-inch cottonwood, 100 feet from river, 150 feet above R. B.
On 18-inch burr oak, 100 feet from river, just below dry creek bed,
opposite Wheeler, Dak....

555 (87)

On 30-inch elm, 225 feet from river, at edge of prairie, lower corner
of cornfield, foot of shore bar, near R. 461, three-fourths mile above
Wheeler, Dak..

859.583

996.7

556 (86)

640

On 12-inch cottonwood, 200 feet from river, 150 feet from foot of bluff,
800 feet above R. B.

557 (85) 558 (84)

On 30-inch cottonwood, on bluff side, 800 feet below R. 451.

559 (83)

560 (82)

561 (81)

On 30-inch double elm, at foot of bluff, just below ravine, 200 feet
from river, 1,000 feet below foot of Little Cedar Island, Dakota.... 873. 517 1,006. 8
On 18-inch cottonwood, 250 feet from river, in small ravine, opposite
R. B. 604, and foot of Hamilton Island, Dakota..
Ou 18-inch cottonwood, 300 feet from river, 700 feet below foot of bar,
in small ravine, 500 feet above R. B. 585...
On 16-inch burr oak, 100 feet from river, on edge of bench, 100 feet
from foot of bluff, in scrub timber and brush, one-fourth mile above
head of Island No. 3, Dakota.....

G. B. M. On 12-inch cottonwood, immediately back of the Laroche
gauge, about 100 feet from bank..

883. 614

1, 026. 0

562 (79) 563 (78) 564 (77)

Rosebud Landing.

On 24-inch cottonwood, one of two growing together at foot of bluff,
700 feet above R. B. 558, 2 miles below Rosebud Landing, Dakota.
On 24-inch cottonwood, 350 feet from river, on bank of small creek, one-
fourth mile below foot of island opposite Rosebud Landing, Dakota..
On 24-inch cottonwood, near edge of bluff bank, 150 feet above ware-
house at Rosebud Landing, Daktoa.....

565 (76)

On 24-inch elm, 125 feet from river, on south side ravine, three-fourths
mile above Rosebud Landing, Dakota

900. 677 1, 033.0

566 (75)

Horizontal furrow in head of copper bolt set into south face of large
rock in bank, on left shore of river, just below the lower Bijou hill
about 3 miles above Rosebud Landing, Dakota..

On north side 36-inch cottonwood, 360 feet from river, in prairie
on west side of dry creek bed, 400 feet above R. 373..
On 24-inch elm, 250 feet from river, 300 feet above R. 370..

On 18-inch cottonwood, 150 feet from river, on bluff side, 800 feet be-
low R. 362...

On 24-inch cottonwood, on bluff side where river comes to bluff, 500
feet above R. 359..

571 (69)

572 (63)

573 (67) Sonora

On northwest side 36-inch cottonwood, 175 feet from high water
bank, 500 feet from river, three-quarters mile below foot of Sonora
Island, Dakota...

On 24-inch cottonwood, on edge of bank, behind willow and sand
bar, on south side Sonora Island, Dakota, about 200 feet above its
foot..

Island. 574

On 18-inch elm, on first bench back from river, 90 feet from bank, 50
feet from foot of bluff, 800 feet below R. 343, opposite center of
General Brooks' Island, Dakota...

909. 099

(66)

On 12-inch elm, 70 feet from river, 400 feet below R. 333, erroneously
marked on tree " 65"

911. 448

575 (65)

On 30-inch cottonwood, on bluff side, 100 feet from river, 500 feet be-
low R. B. 484.

905. 295

1,044. 4 1,048.9 1,049. 0

576 (64)

On 12-inch cottonwood, 200 feet from river, on right bank of dry
creek bed, opposite R. B. O 477.

906. 280 1,051.0

On 24-inch cottonwood, 200 feet from river, 500 feet below mouth of
dry creek, 600 feet above ▲ 68..

577 (63) White River. 578 (62) ENG 88

On 24-inch elm, on side of bluff, 200 feet from river, 500 feet above!
R. 302..

-148

913. 517

929.255 1, 059.3

1,055. 2

Descriptions and elevations of bench-marks on the Missouri River, etc.-Continued.

No.

Description.

Eleva.
tion.

Above

the mouth.

579 (61) 580 (60)

On 15-inch cottonwood, on bluff side, 150 feet below R. B. 437...
On 36-inch cottonwood, 500 feet from river, 600 feet from foot of bluff,
directly opposite R. B. 433, 600 feet below foot of Ida Rees Isl-
and, Dakota...

Feet. Miles 921.5521, 060. A

920.323 1.061 7

581 (59) Brulé Agency 582 (58)

On 30-inch elm, 500 feet from river, 400 feet below mouth of American
River, 2,500 feet east of Lower Brulé Agency, Dak

On 14-inch elm, 90 feet from bank, in brush and timber, 1,000 feet
above foot of Big Cedar Island, Dak.

583 (57)

On 18-inch cottonwood, in ravine, one of three large trees 125 feet back
of face of bluffs, 400 feet below R. 281.

584 (56) 583 (55) Chamberlain

On 24-inch cottonwood, 500 feet from river, opposite Chamberlain,
Dak., on Big Cedar Island

On 24-inch cottonwood, 400 feet from river, opposite Chamberlain,
Dak., on Big Cedar Island

586 (54)

587 (53)

G. B. M. On 30-inch elm, 300 feet from river, 700 feet above Chicago,
Milwaukee and Saint Paul R. R. freight depot, in Chamberlain, Dak
On 30-inch cottonwood, 425 feet from bank, lone tree in prairie, oppo-
site R. 274, 1 mile above Chamberlain, Dak............
On 18-inch burr oak, 800 feet from river, in prairie, one of a group of
scattering trees, 500 feet above 56

588 (52)

On south side of 24-inch burr oak, 275 feet from river, at foot of bluff,
about 1,000 feet below R. 265

930. 719

1,073. 7

589 (50) 590 (49) Fort Hale. 591 (48)

Horizontal furrow in head of copper bolt leaded into soap-stone bluff,
1,000 feet above foot of shore bar, 1,000 feet above ▲ 52.
On east side 14-inch oak, 50 feet northwest of Commandant's house,
at Fort Hale, Dak..

North end, outer edge door-sill, main entrance, east side, Command-
ant's house, Fort Hale, Dak

941. 518

592 (47)

On 36-inch cottonwood, on south bank Zephyr Creek, 100 feet from
river

937,370

1,063. 4

593 (46)

Fort Thomp

son.

On 12-inch elm, 200 feet from river, on west side of ravine, 400 feet
below R. 234.

594 (44)

595 (43) Fish Creek.

On 15-inch elm, on left bank Camel Creek, 400 feet from river, 550
feet above A 42..

On 36-inch cottonwood, on bank of dry creek, 400 feet back from R.
B. 304, 500 feet above 40

596 (42)

On 18-inch cottonwood, 250 feet from high-water bank, near R. 195,
at foot of shore bar and upper end of timber and brush...
On 36-inch cottonwood, 650 feet from river, opposite sounding-stake
H 5, one of a group of four large cottonwoods in prairie
On 22-inch elm, 60 feet from river, at foot of bluff, at lower end of
wooded bottom, 300 feet above R. 185..

"O" cut in top of large bowlder embedded in bank at R. 118
On 15-inch cottonwood, 300 feet from river, on bank of dry creek,
near R. B. 155.

597 (41) 598 (40) 599 (39) 600 (38) 601 (37) Cul-de-sac

Island. 602 (35)

603 (34)

604 (33) 605 (32) 606 (31)

Big Bend.

607 (30) 6C8 (29)

609 (26)

On 20-inch cottonwood, 500 feet from river, 200 feet from high-water
bank, above R. B. 260, 300 feet above foot of bar, opposite A 34
On 18-inch cottonwood, 200 feet from river, in cottonwood flat, be-
hind 20-foot sand ridge, 1,300 feet below A 312

On 48-inch double cottonwood, 75 feet south of foot of plateau, 270 feet
from river, 500 feet below R. B. 239

On 30-inch cottonwood, one of a small grove on bluff slope, 1,600 feet
above 38, 1,000 feet above R. B. 231

On 14-inch elm, 250 feet from river, on bluff side, 600 feet below R.
154

"O" cut in top of bowlder, in ravine, 100 feet from river, at R. 149...
On 14-inch cedar, on side of bluff, in ravine, about 350 feet below R.
136

On 20-inch cottonwood. 55 feet from river, on edge of bench. 50 feet
from base of bluff at R. 129

On 60-inch cottonwood, 300 feet from river, 1,500 feet below mouth
of Medicine Knoll Creek, Dak

On 72-inch cottonwood, 1,000 feet from river, 250 feet from high-water
bank, 300 feet below R. B. 183, 1 miles above Medicine Knoll
Creek, Dak

On 50-inch double cottonwood, on side of bluff, behind shore bar, 50
feet from bluff bank, one-quarter mile below R. 120.

959. 278 1, 109. 0

970. 723 1, 114.0

973. 389 1, 116.5

1, 010. 613
981. 467

1, 117.3 1, 118.9

982. 024 1, 122. 0

976.663 1, 123.5 976.712 1, 126, 9

979.698

1, 128. 6

984.549

1, 132. 0

976. 659

1, 132.3

982.420

1, 135.7

612 (22)

On 12-inch willow, growing from side of bluff, in ravine, 1,000 feet
below A 24'

983.701

1, 138. 1

613 (21)

On 40-inch cottonwood, 20 feet from south bank of Cedar Creek, 450
feet from river, about one-half mile above loot of D'Orion Island
(No. 1), Dakota

On southwest side 20-inch cottonwood. 130 feet from river, on lower
side dry creek bed, three-quarters mile above foot D'Orion Island
(No. 1), Dakota, 175 feet above R. B. 135

On 20-inch double elm, 60 feet from river, on bluff side, 350 feet be-
low R. 90....

986.116

1, 139. 8

985, 979

1, 140. 2

993. 290 1,141,7

Descriptions and elevations of bench-marks on the Missouri River, etc.—Continued.

On 48-inch cottonwood, on bank of small stream, 1,500 feet from
river, 200 feet from high-water bank, 1,000 feet above A 19...
On 14-inch elm, forked 5 feet from ground, on edge of prairie plateau,
behind narrow belt of willows and cottonwoods, 300 feet below R.
67, about 9 miles below Rosseau, Dak..

1

No.

Description.

Above

Eleva-
tion.

the mouth.

616 (18)

On 16-inch cottonwood, on north side ravine, just above R. 84, 120
feet from river....

617 (17) G18 (16)

619 (15)

620 (14) 621 (13) 622 (12)

623 (11) Rosseau. 624 (10)

627

cut into large granite bowlder, embedded in beach at foot of
bluff, 125 feet from river, at foot of shore bar, 50 feet above R. B.
92

On 15-inch cottonwood, 300 feet from river, 300 feet below R. B. O
78, 1,000 feet above A 16..

"O

cut in top of large flat rock, under bank, one-quarter mile be-
low A 12'

On south side of 48-inch triple elm, 350 feet from river, just east of
dry runlet, about 14 miles below Rosseau, Dak

"O" on bowlder, embedded in beach, one-half mile below Rosseau,
Dak

"O" cut in top of bowlder, embedded in dry runlet, 1 miles above
Rosseau, Dak., 260 feet from bluff bank..

On 72-inch cottonwood, branched into six stems, 250 feet from river,
one-quarter mile below foot of Farm Island, Dakota, 100 feet below
wood yard...

On 30-inch cottonwood, 170 feet from river, in cotton wood timber, just
below foot of reach of bluffs, below Fort Pierre, Dak
On 15-inch cottonwood, on bank of small stream, 200 feet from river,
opposite 6'.

1, 009. 992 1, 165. 9

1, 010. 018

(G)

628 (5)

629 (4)

On 12-inch cedar, on bluff side, 200 feet from river, 500 feet below
On 10-inch cedar, on slope of bluff, 150 feet from river, 300 feet above
foot of La Framboise Island, Dak

630 (3)

"O" cut in top of granite bowlder, on side of blaff, 600 feet below S.
23, about 2 miles below Fort Pierre, Dak..

631 (2) Ft. Pierre.

G32

On south side 12-inch cottonwood, 5 feet east of east line of lot on
which stands G. P. Waldron's dwelling, and 35 feet north of north
line of Main street, Fort Pierre, Dak
(1) On east side of 18-inch cottonwood, 50 feet west of G. P. Waldron's
dwelling house, 20 feet north of north line of Main street, and 165
feet east of east line of Deadwood street, Fort Pierre, Dak

REPORT OF MR. JAS. A. SEDDON, ASSISTANT ENGINEER.

MISSOURI RIVER COMMISSION,

Saint Louis, Mo., June 20, 1888.

SIR: I have the honor to make the following report of the physical data department for the fiscal year ending June 30, 1888.

As stated in last annual report but little remained to be done in the regular compilation of the data. This has been finished, consisting of the compilation complete with tabulations and reference maps of twenty-four cross-sections in the vicinity of Plattsmouth, and forty-nine cross-sections, with 22 miles of slope in the vicinity of Brownville. In addition to the regular compilation, eleven monthly cross-sections at Bismarck have been plotted on the regular cross-section sheets.

Borings at Nebraska City previously compiled have been revised, and in part put in shape for publication. Also ten of the 1879 discharge observations on the Mississippi River, at Columbus, Ky., used in last annual report in connection with the Saint Charles sediment data, and in which errors were suspected, have been recomputed and found to have been in error about as there indicated.

The yearly gauge sheets of 1886 for twenty regular gauges have been reduced and compiled with current histories. Also bridge gauge records received from Blair, years 1882 to 1887, and from Rulo, years 1883 to 1887, have been reduced and yearly gauge sheets compiled. The current gange readings have been plotted as received for a check on the observers, and errors investigated.

In the study of the data the following gauge relations were plotted: Sioux CityOmaha, 1820; Omaha-Plattsmouth, 1880; Plattsmouth-Plattsmouth Bridge, 1886 and 1887; Glasgow-Boonville, 1879 to 1885; Boonville-Jefferson City, 1884 to 1886; Boonville-Cedar City, 1881 and 1882; Jefferson City-Hermann, 1884 and 18-5; HermannSaint Charles, 1885. But as the general investigation of gauge relations and the va