142 



BERNALILLO COUNTY. 



(Area, 8,350 square miles ; estimated forest area, 1,450 square miles.) 



The Eio Grande Kiver traverses the eastern part of Bernalillo County 

 from north to south. Its principal tributaries are the Rio Galisteo 

 on the east, and the Eio Jemez and Eio Puerco Elvers at the west. lu 

 addition to the above, there are numerous springs, and a few small 

 streams of more or less permanence. The Eio Grande is the most im- 

 portant valley, and includes a large area of agricultural land. To the 

 westward of this valley the county is rolling and broken by hills and 

 canyons. It has grass lands and some timber, and is well adapted for 

 grazing ])uri)oses. The Sandia Mountains occupy the eastern and the 

 Jemez Mountains the central portions of the county. 



Upon the mountains named above are situated most of the forests. 

 About one-fourth of the forest area has good timber, and as much more 

 has a promising young growth. Open forests of Yellow and White 

 Pine and Eed Cedar extend from the northeastern corner of the county 

 westward to the Jemez Eiver. The principal species of trees, in addi- 

 tion to those named above, are Scrub Uak and Piiion, the latter pre- 

 dominating. 



But little change, if any, has beeii observed in the volume of water 

 in the streams of this county ; the flow is more intermittent than in 

 former years, and floods have become more frequent. 



COLFAX COUNTY. 



(Area, 7,000 square miles ; estimated forest area, 1,275 square miles.) 



This county is situated in the extreme northeastern corner of the 

 Territory. It is bordered on the west by the Main Eocky Mountain 

 range, and its surface, as a whole, is greatly varied. Mountains, single 

 and in groups, hills, buttes, rolling lands, mesas, and valleys are em- 

 braced within its limits. Numerous streams, the most important of 

 which are the Cimarron and Canadian Elvers, traverse the region. 

 This, with the fine growth of grass, makes it one of the best grazing 

 districts of the west. 



The forest lands are situated principally in the western part of the 

 county and constitute about one-fifth of the entire area. Nearly 10 

 per cent, of the timber is Pine and Spruce of medium size. The re- 

 mainder is mostly Aspen, Scrub-Oak, Piiion, and Dwarf Cedar. Cot- 

 tonwood grows along the streams. 



There is less water in the streams in summer than there was fifteen 

 years ago. Floods and droughts have become more frequent. 



DONA ANA COUNTY. 



(Area, iO,2CO square miles ; estimated forest area, 75 square miles.) 



Dona Ana is the central county of the southern tier bordering on 

 Texas and Mexico. It is, in general terms, a strip of table land about 



