CONTENTS. 
Page. 
Introduction 9 
Legislation 10 
Field work in 1893 and 1894 13 
Upper Missouri basin, in Montana 14 
Spanish Creek station, on West Gallatin Eiver 14 
Logan station, on Gallatin River 16 
Red Bluff station, on Madison River 18 
Three Forks station, on Madison River 20 
Sappington station, on Jefferson River 22 
Townsend station, on Missouri River . . 22 
Yellowstone basin, in Wyoming and Montana 2$ 
Horr station, on Yellowstone River, Montana 2 
Platte basin, in Wyoming, Colorado, and Nebraska 28 
Woods Landing station, on Laramie River 28 
Uva station, on Laramie River 28 
Douglas station, on North Platte River 29 
Orin station, on North Platte River 29 
North Platte station, on North Platte River 30 
Fort Collins station, on Cache la Poudre River 30 
Columbus station, on Loup River 32 
Kansas basin, in Nebraska 32 
Benkelman station, on North Fork of Republican River 33 
Benkelman station, on South Fork of Republican River 33 
Palisade station, on Frenchman River 33 
Arkansas basin, in Colorado 34 
Hayden station, on Arkansas River 34 
Canyon station, on Arkansas River 35 
La Junta station, on Arkansas River 37 
Holly station, on Arkansas River 39 
Canadian basin, in New Mexico 40 
Watrous station, on Mora River 40 
Rio Grande basin, in Colorado, New Mexico, and Texas 41 
Del Norte station, on Rio Grande 41 
Alamosa station, on Rio Grande 43 
Embudo station, on Rio Grande 43 
Water Tank station, on Rio Grande 15 
San Marcial station, on Rio Grande 46 
El Paso station, on Rio Grande 46 
Colorado basin, in Colorado, Utah, and Arizona 47 
Grand Junction station, on Gunnison River 48 
Grand Junction station, on Grand River 48 
Blake station, on Green River 48 
Helper station, on Price River 48 
Arizona dam, on Salt River 49 
Yuma station, on Colorado River 51 
5 
