
Or 
2) What is the approximate total number of acres of land in your county suitable 
for agricultural purposes requiring irrigation ? 
(3) Is there a suflicient water supply 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 ? 
(6) In your county what is the approximate total length of (a) irrigating 
ditches—main, secondary, small; ()) mining and milling ditches ; (¢) city water- 
works (and capacity in gallons), together with 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 in 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. 
(8) 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 in your county; giving 
the timber in 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 adequate protection ? 
(12) Please give any other suggestions upon the same general subject which may 
oceur 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 a portion of the above questions were quite generally 
returned. The estimates of forest areas, acreage of lands suitable for 
irrigation, etc., were, of necessity, approximate rather than exact. 
IDAHO. 
Idaho Territory is situated in the northwestern portion of the Unite 
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 86,400 square miles. It is a vast wedge- 
shaped plateau, 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 in the west and south-central 
portions are broad table-lands and arable valleys. The Bitter Root 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 Lewiston, where the Snake and Clearwater Rivers 
unite at an elevation of 680 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 to 

