48 
Series of measurements have been begun on some of the more impor- 
tant tributaries, viz, at Grand Junction, Colo.; at Blake and Helper, 
Utah; at Arizona Dam, above Phoenix, Ariz., and on the main Colorado 
itself at Yuma, these being mainly for the purpose of obtaining data of 
general value rather than of local application in questions of immediate 
water supply. 
GRAND JUNCTION STATION, ON GUNNISON RIVER. 
This station is located at the pump house of the Denver and Rio 
Grande Railroad, 1 mile from town, beyond the railroad bridge across 
Grand River. It was established on October 19, 1894, by Mr. Arthur 
P. Davis. The observer is Mr. Frank Adair, engineer at the pump 
house. The gage is of pine timber, vertical, 5 by 5 inches, fastened 
to bolts set in the stone wall of .the pump house. It is painted white 
and black. The discharge on Oc^ber 18, 1894, for a height of 1.25 
feet was 748 second-feet. 
GRAND JUNCTION STATION, ON GRAND RIVER. 
This station is located at the north end of the wagon bridge across 
Grand River at Grand Junction, on the west side of the first abut- 
ment. It was established by Mr. Arthur P. Davis, on October 18, 1894. 
The observer is Mr. B. W. Yedder, engineer of the city waterworks. The 
station is distant from the pump house about 300 feet. The gage is 
vertical, of 4 by 6 inch pine timber, and is fastened to bolts set in the 
stone abutment. The timber and gage are painted white and grad- 
uated in black. The point 11.95 of the gage is level with the sand- 
stone coping on which the bridge truss rests. Measurements made 
from the wagon bridge on October 18, 1894, gave for a height of 0.6 
feet a discharge of 1,585 second-feet. 
BLAKE STATION, ON GREEN RIVER. 
This station is located one-half mile east of Blake, Utah, at the 
bridge of the Rio Grande Western Railroad, northeast corner, middle 
pier. It was established on October 20, 1894, by Mr. Arthur P. Davis. 
The observer is Mr. Frank Jacobs, engineer at the pump house. The 
station is distant from the pump house about 100 feet. The gage is 
vertical, of pine timber, 8 by 8 inches by 24 feet, fastened to bolts set 
in the stone pier and bolted to the iron tension # piece. The scale is 
nailed to a timber. The 18- foot mark on gage is 3 feet below the top 
of the pier. The river was measured October 21, 1894, from the ferry 
just above the bridge, showing for a height of 1.98 feet a discharge of 
3,035 second-feet. 
HELPER STATION, ON PRICE RIVER. 
This station is located at the wagon bridge, 1 mile west of Helper, 
Utah, 50 yards south of the railroad track. It was established by Mr. 
Arthur P. Davis on October 23, 1894. The observer is Mr. Patrick 
