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Washburn
Report Index
YELLOWSTONE EXPEDITION OF 1870
Page 39
METEOROLOGICAL OBSERVATIONS OF THE YELLOWSTONE
EXPEDITION.
Date.
|
Station.
|
Aneroid
barometer.
|
Thermometer
|
Altitude.*
|
Remarks
|
|
1870.
|
|
|
°
|
Feet.
|
Worked by Burt's tables
|
|
Aug. 22
|
Fort Ellis, Montana Ter† |
25.20
|
62
|
|
Morning. |
|
Aug. 22
|
do |
25.25
|
92
|
4,911
|
Noon; mean of 2 observ'ns: altitude |
|
Aug. 22
|
Bozeman Divide |
24.10
|
70
|
6,140
|
Noon. |
|
Aug. 23
|
Trail Camp |
24.30
|
54
|
5,803
|
Morning. |
|
Aug. 23
|
Butler's Ranch |
25.10
|
40
|
4,837
|
Evening, stormy weather. |
|
Aug. 24
|
do |
25.10
|
40
|
4,837
|
Morning, stormy weather. |
|
Aug. 25
|
Yellowstone Cañon |
25.10
|
40
|
4,837
|
Morning. |
|
Aug. 25
|
Gardiner's River |
224.80
|
77
|
5,383
|
Evening. |
|
Aug. 26
|
do |
24.80
|
49
|
5,215
|
Morning. |
|
Aug. 26
|
Crossing Divide |
23.10
|
72
|
7,331
|
Noon. |
|
Aug. 27
|
Antelope Creek |
23.80
|
57
|
6,367
|
Morning. |
|
Aug. 27
|
Hot Spring Creek |
23.60
|
60
|
|
Evening. |
|
Aug. 28
|
do |
23.70
|
46
|
|
Morning. |
|
Aug. 29
|
do |
23.70
|
45
|
6,546
|
Morning; mean of 3 obs'ns: altitude. |
|
Aug. 29
|
High Mountain South |
21.60
|
65
|
9,113
|
Noon. |
|
Aug. 29
|
Washburn's Peak |
20.80
|
50
|
9,966
|
Do. |
|
Aug. 30
|
Camp Jordan |
23.00
|
50
|
7,270
|
Morning. |
|
Aug. 31
|
Near Falls |
22.60
|
46
|
|
Do. |
|
Aug. 31
|
do |
22.70
|
58
|
|
Evening. |
|
Sept 1
|
do |
22.50
|
32
|
7,697
|
Morning; mean of 3 obs'ns: altitude. |
|
Sept. 1
|
Mud Springs |
22.75
|
60
|
|
Evening. |
|
Sept 2
|
do |
22.60
|
32
|
|
Morning. |
|
Sept. 3
|
do |
22.60
|
32
|
7,487
|
Morning; mean of 3 obs'ns: altitude. |
|
Sept. 4
|
Yellowstone Lake |
22.60
|
58
|
|
Morning. |
|
Sept. 5
|
do |
22.50
|
44
|
|
Do. |
|
Sept. 6
|
do |
22.40
|
38
|
|
Do. |
|
Sept. 7
|
do |
22.50
|
32
|
|
Do. |
|
Sept. 7
|
Langford's Peak |
20.35
|
65
|
10,327
|
Noon. |
|
Sept. 8
|
Yellowstone Lake |
22.50
|
32
|
|
Morning. |
|
Sept. 9
|
do |
22.60
|
45
|
|
Do. |
|
Sept. 10
|
do |
22.50
|
44
|
|
Do. |
|
Sept. 11
|
do |
22.60
|
55
|
|
Do. |
|
Sept. 12
|
do |
22.60
|
55
|
|
Do. |
|
Sept. 13
|
do |
22.40
|
40
|
|
Morning, rainy and snowing. |
|
Sept. 14
|
do |
22.50
|
36
|
|
Morning, snowing hard |
|
Sept. 15
|
do |
22.60
|
44
|
|
Morning, rainy. |
|
Sept. 16
|
do |
22.70
|
44
|
|
Morning |
|
Sept. 17
|
do |
22.65
|
50
|
7,714 3-5
|
Morning. ‡ |
|
Sept. 18
|
Snow Camp |
22.70
|
40
|
7,535
|
Morning, rainy. |
|
Sept. 19
|
Firehole Basin |
23.50
|
43
|
6,626
|
Morning, clear. |
|
Sept. 20
|
Madison River |
23.50
|
38
|
6,594
|
Morning. |
|
Sept. 21
|
Madison Cañon |
23.60
|
32
|
6,434
|
Do. |
|
Sept. 22
|
Madison River |
23.70
|
40
|
6,382
|
Do. |
|
Sept. 23
|
Madison Settlements |
25.00
|
38
|
4,937
|
Do. |
|
Sept. 24
|
Madison Bridge |
|
|
|
No observations. |
*Altitudes calculated from an
ocean-level barometer, 30 inches; thermometer, 60°.
†Fort Ellis, Montana Territory,
latitude, 45° 45'; longitude, 110° 53' west.
‡Rainy. Mean of 15 observations.
Altitude.
These altitudes all fall short, as the
Aneroid barometer does not indicate with accuracy above 5,000 feet.
G. C. DOANE.
Second Lieutenant Second Cavalry.
_________
HEADQUARTERS DEPATRTMENT OF DAKOTA
St. Paul, Minnesota, February 8, 1871.
Respectfully forwarded to the Adjutant General of
the Army, with the following remarks:
On the 14th day of August, 1870, Mr. H.D. Washburn,
surveyor general of Montana, requested an escort for a party desiring to
determine by exploration the location of the lake and falls of the
Yellowstone. I directed that the escort be furnished, and that an officer be
sent with it who could make a report of the trip, as well as a map of the
country passed over. Second Lieutenant G.C. Doane, Second Cavalry, was the
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