TABLE OF CONTENTS.

Page.
CHAPTER I.
Physical Characteristics of the Arid Region:
The Arid Region5
Irrigable lands 6
Advantages of irrigation 10
Coöperative labor or capital necessary for the development of irrigation 11
The use of smaller streams sometimes interferes with the use of the larger 12
Increase of irrigable area by the storage of water 12
Timber lands 14
Agricultural and timber industries differentiated 18
Cultivation of timber 19
Pasturage lands 19
Pasturage farms need small tracts of irrigable land 21
The farm unit for pasturage lands 21
Regular division lines for pasturage farms not practicable 22
Farm residences should be grouped 22
Pasturage lands cannot be fenced 23
Recapitulation 23
Irrigable lands 23
Timber lands 23
Pasturage lands 24
CHAPTER II.
The Land-System needed for the Arid Region:
Irrigable lands 27
Timber lands 27
Pasturage lands 28
A bill to authorize the organization of irrigation districts 30
A bill to authorize the organization of pasturage districts 33
Water rights 40
The lands should be classified 43
CHAPTER III.
The Rainfall of the Western Portion of the United States:
Precipitation of the Sub-humid Region 47
Precipitation of the Arid Region 48
Precipitation of the San Francisco Region 49
Precipitation of the Region of the Lower Columbia 49
Distribution of rain through the year 50
Precipitation of Texas 50
Precipitation of Dakota 51
Seasonal precipitation in the Region of the Plains 52
Seasonal precipitation in the San Francisco Region 53
Mean temperature, by seasons, for the San Francisco Region 54
Seasonal precipitation and temperature on the Pacific Coast, etc. 55
Seasonal precipitation in Arizona and New Mexico 56
CHAPTER IV.
Water Supply.—By G. K. Gilbert:
Increase of streams 57
Rise of Great Salt Lake 58
Volcanic theory 67
Climatic theory 68
Theory of human agencies 71
Farming without irrigation 77
CHAPTER V.
Certain Important Questions relating to Irrigable Lands:
The unit of water used in irrigation 81
The quantitative value of water in irrigation 81
Area of irrigable land sometimes not limited by water supply 85
Method of determining the supply of water 85
Methods of determining the extent of irrigable land unlimited by water supply 86
The selection of irrigable lands 87
Increase in the water supply 89
CHAPTER VI.
The Lands of Utah:
Physical features 93
Timber 98
Irrigable and pasturage lands 103
Uinta-White Basin 103
The Cañon Lands 105
The Sevier Lake District 106
The Great Salt Lake District 106
Grasses 107
Table of Irrigable lands in Utah Territory 111
CHAPTER VII.
Irrigable Lands of the Salt Lake Drainage System.—By G. K. Gilbert:
Irrigation by the larger streams 117
Bear River drainage basin 119
Weber River drainage basin 121
Jordan River drainage basin 124
Irrigation by smaller streams 126
CHAPTER VIII.
Irrigable Lands of the Valley of the Sevier River.—By Capt. C. E. Dutton:
Altitudes of the San Pete Valley 133
Volume of flowing water in San Pete Valley 140
Irrigable lands of the Sevier Lake District 144
CHAPTER IX.
Irrigable Lands of that portion of Utah drained by the Colorado River and its Tributaries.—By Prof. A. H. Thompson:
The Virgin River 152
Kanab Creek 154
The Paria River 155
The Escalante River 156
The Fremont River 157
The San Rafael River 158
The Price River 159
Minnie Maud Creek 159
The Uinta River 160
Ashley Fork 161
Henrys Fork 161
The White River 161
The Green River 162
The Grand River 163
The San Juan River 163
Other streams 163
Irrigable lands of the Colorado drainage 164
CHAPTER X.
Land Grants in Aid of Internal Improvements.—By Willis Drummond, Jr. 165