GAZETTEER OF COLORADO. 17 
Atlas sheet. 
Arapahoe; creek in Larimer County, a right-hand branch of 
Big Grizzly Creek, tributary to North Platte River. 
Arapahoe; peak in Front Range on boundary between Grand 
and Boulder counties; altitude, 13,520 feet. 
Arapahoe; station in Cheyenne County on Union Pacific Rail- 
road; altitude, 4,012 feet Cheyenne Wells. 
Arastra; creek in San Juan County, a left-hand branch of 
Animas River Silverton. 
Arastra; post village in San Juan County Silverton. 
Arboles; post village in Archuleta County on Denver and Rio 
Grande Railroad; altitude 6,001 feet: 
Arbourville; station in Chaffee County on Denver and Rio 
Grande Railroad. 
Arbuckle; gulch in Gilpin County, tributary to North Clear 
Creek Blackhawk. 
Archer; station in Jefferson County on Colorado and Southern 
Railway Denver. 
Archuleta; county in the extreme southern part of the State; 
bounded on the north by Mineral and Hinsdale counties, 
on the east by Conejos County on the south by New Mex- 
ico, and on the west by La Plata County. The county is 
drained by the upper waters of San Juan River and its 
branches from the north, the chief of which are Piedra, 
Mariposa, Blanco, and Navajo rivers. The southern part 
includes the valley of San Juan River, entering which are 
narrow valleys from the north separated by spurs rising 
northward to the San Juan Mountains, in which these 
streams head. The greatest elevation in the county is Sum- 
mit Peak, 13,323 feet. The area is 1,209 square miles, of 
which 10,372 acres, or 1 percent, were under cultivation in 
1900. The population in 1900 was 2,117, and of Pagosa 
Springs, the county seat, 367. In 1900 the average mag- 
netic declination was 14° 20' east, The mean annual rain- 
fall is about 15 inches, and the mean annual temperature 40°. 
Arctic; station in Jefferson County on Colorado and South- 
ern Railway. 
Arden; station in Kiowa County on Missouri Pacific Railway; 
altitude, 4,055 feet Granada. 
Arena; creek in Saguache County, a left-hand branch of San 
Luis Creek. 
Arena; station in Chaffee County on Denver and Rio Grande 
Railroad; altitude, 7,442 feet. 
Arena; station in Cheyenne County on Union Pacific Rail- 
road; altitude, 4,225 feet. 
Arena; village in Teller County. 
A.requa; gulch in Teller County, tributary to Cripple Creek. . \ Cripple Creek Spe- 
A.requa; village in Teller County f cial. 
Argentine; pass in Front Range, between McClellan Moun- 
tains and Grays Peak; altitude, 13,286 feet. 
Argentine; post village in Summit County on Colorado and 
Southern Railway ; altitude, 10,589 feet Leadville. 
Bull. No. 291—06—2 
