GAZETTEER OF COLORADO. 149 
Atlas sheet. 
Sangre de Cristo; mountains, a long, narrow range stretching 
from the head of San Luis Valley along its eastern border 
to New Mexico, including several peaks exceeding 14,000 
feet in altitude. 
Sangre de Cristo; pass in Sangre de Cristo Range; altitude, 
9,454 feet. 
San Isabel; creek in Saguache County, a left-hand branch of 
San Luis Creek. 
San Isabel; post village in Saguache County; altitude, 7,537 
feet. 
San Isabel Forest Reserve; area, 501 square miles. 
San Isidro; creek in Las Animas County, a right-hand branch 
of Purgatory River Elmoro. 
San Joaquin; ridge in San Miguel County Telluride. 
San Juan; county in the southwestern part of the State; 
bounded on the north, east, and west by San Juan Moun- 
tains and on the south by La Plata County. Its surface is 
mountainous, including some of the highest spurs of the 
San Juan group. The southern part is Bakers Park, a valley 
hemmed in by mountains. Its area is 438 square miles, 
practically none of which is cultivated. The population in 
1900 was 2,342; and of Silverton, the county seat, 1,360. In 
1900 the average magnetic declination was 12° 50' east. 
The mean annual rainfall is about 19 inches, and the mean 
annual temperature 45° to 50°. 
San Juan; mountains in the southern part of the State, which 
are extremely rugged and include many peaks exceeding 
14,000 feet in altitude; source of Rio Grande and San Juan 
and Uncompahgre rivers and numerous branches of Gun- 
nison River. 
3an Juan; river of Colorado, New Mexico, and Utah, a large 
branch of Colorado River, heading in the south slopes of 
San Juan Mountains and flowing in a westerly course; 
discharge, near Farmington, N. Mex., June 19 to December 
31, 1904, 741,900 acre-feet. 
5an Juan; town in Hinsdale County. 
3an Juan; village in Mineral County; altitude, 8,901 feet. 
Jan Juan Forest Reserve; area, 2,246 square miles. 
Jan Luis; creek in Saguache and Costilla counties, tributary to 
San Luis lakes, 
ian Luis; hills in Conejos and Costilla counties. 
»an Luis; lakes without outlet in San Luis Valley, Costilla 
County, into which San Luis Creek flows; altitude, 7,592 
feet. 
an Luis; peak on boundary between Saguache and Mineral 
counties; altitude, 14,100 feet. 
an Luis; post village and county seat of Costilla County; pop- 
ulation in 1900, 350; altitude, 7,946 feet, 
an Luis; valley in the southeastern part of the State, drained 
(southward by the Rio Grande, and by smaller streams which 
have no outlet; its surface is everywhere very level; alti- 
