UNITED STATES DEPARTMENT OF AGRICULTURE 
BULLETIN No. 1026 
Contribution from the Bureau of Public Roads 
THOMAS H. MacDONALD, Chief 
Washington, D. C. 
May 16, 1922 
IRRIGATION IN NORTHERN COLORADO 
By 
ROBERT G. HEMPHILL, Irrigation Engineer 
CONTENTS 
Pas 
Introduction 1 
Cache la Poudre Valley 2 
Meteorology , 3 
Soils 5 
Water Resources 6 
Seepage Return 10 
Drainage Conditions 12 
Exchange of Water 12 
Fage 
Water Rights 13 
Distribution from River 19 
Duty of the River . 24 
Canal Systems 26 
Gross Duty for Canals 42 
Farm Irrigation . ." 51 
Reservoirs 69 
Summary and Conclusions 79 
(Based on data gathered under cooperative agreement between the 
Bureau of Public Roads of the United States Department of Agriculture 
and the Colorado Agricultural Experiment Station) 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1922 
