91 



(2) Wbat is the approximate total number of acres of laud iu your county suitable 

 for agricultural purposes requiring irrigation ? 



(3) Is tlicrc a sufficient water suj)ply to irrigate that amount? If not, what pro- 

 portionate amount short ? 



(4) What is the approximate number of acres already under ditch? 



(5) What is the approximate number of acres already irrigated ? 



(G) In yonr county what is the approximate total length of (a) irrigating 

 ditches — main, secondary, small ; (&) mining and milling ditches ; (c) city water- 

 works (and capacity in gallons), together Avith total capacity of each, in statutory 

 inches or cubic feet per second ? 



(^7) Has the volume of water in the streams of your county increased or diminished, 

 to your knowledge ? Is the flow of water iu such streams any more or less intermit- 

 tent than was formerly the case? If you have noticed any such changes, please state 

 the causes, so far as known to you. 



(H) What effect, if any, in your opinion, do the forests have on the water supply ? 



(9) What, in a general way, is the extent, character, and location of timber in 

 your county ? 



(10) Please send sketch, noting (to the best of your knowledge) the situation of 

 the timber, irrigating and other canals, and city water- works iu your county ; giving 

 the timber iu green and canals and water- works in blue. To assist you in answering 

 this question, a miniature map of your county is inclosed herewith. 



(11) What are the principal causes of the destruction of forests in your county, 

 and what measures would you suggest for their more atlequate protection ? 



(12) Please give any other suggestions upon the same general subject which may 

 occur to you. If there is insufficient space on this sheet for your answers, supple- 

 mentary sheets may be used, care being taken to refer to the numbers on this sheet 

 so as to prevent uncertainty or confusion. 



Answers to ii portion of tbo above questions were quite generally 

 returned. The estimates of forest areas, acreage of lands suitable for 

 irrigation, etc., were, of necessity, approximate rather tban exact. 



IDAHO. 



Idaho Territory is situated in the northwestern portion of the United 

 States, and near enough to the Pacific to share in the climatic influence 

 of the warm ocean currents which sweep northward along the western 

 shores of the continent. 



The Territory has an area of 8G,400 square miles. It is a vast wedge- 

 shaped i)lateau, traversed by numerous streams, which find outlet at 

 the northwest through the channel of the Columbia. High and rugged 

 mountains cover large areas in the northern and eastern parts; innu- 

 merable ranges span the interior, while iu the west and south-central 

 portions are broad table-lands and arable valleys. The Bitter Eoot and 

 Coeur d'Alene are the most rugged and precipitous of the mountain 

 ranges. Their summits are snow-clad throughout the year, as are also 

 those of the three Tetons, noted peaks in southeastern Idaho. The 

 highest elevations in the Territory range from 9,000 to 13,000 feet. The 

 lowest point is at Lewistou, where the Snake and Clearwater Eivers 

 unite at an elevation of 6-80 feet. 



The published maps fail to convey an idea of the almost numberless 

 ranges of this region. In a distance of 300 to 500 miles, from east lo 



