6o 



NEW YORK STATE MUSEUM 



Contents: 

 Preface 

 Introduction 



Chapter i Physiography of the 

 Hudson and Cham- 

 plain valleys in re- 

 lation to the control 

 of glacial products 



2 Retreat of the Wiscon- 



sin ice sheet from 

 eastern New York 



3 Glacial deposits of the 



middle Hudson val- 

 ley 



4 Glacial deposits of the 



upper Hudson valley 



5 Retreat of the ice sheet 



in the Champlain 

 valley 



6 Valleys of Lake George 



and Wood creek 



7 Deltas and shore lines 



of the Champlain 

 valley 



8 Larger glacial lakes of 



the Champlain and 

 Hudson valleys 

 g Larger glacial lakes of 

 the Champlain and 

 Hudson valleys (con- 

 tinued) 



10 The marine invasion 



1 1 Comparisons and con- 



clusion 



1 2 Bibliography 



Economic geology 



8 No. 85 Hydrology of the 

 Rafter. oo2p. 44pl. 5 maps. 

 Contents: 



The source of the greatness of New 

 York 



Introductory statements 

 Favorable natural conditions 

 Artificial modifications 

 Why water powers are less re- 

 liable now than formerly 

 The variation in water yield 

 Value of water to industries 

 The relation of the mountains to 



the river valleys 

 Rivers and lakes of the Adirondack 

 plateau 



The great forest as a stream con- 

 servator 

 Data of climate in New York 

 The division of the State into 



climatic areas 

 Description of meteorological 

 tables 



Division of the year into storage, 

 growing and replenishing peri- 

 ods 



The relation of rainfall to runoff 

 Rainfall 



Cause of rainfall 

 Measurement of rainfall 

 Determination of minimum 



rainfall 

 Is rainfall increasing? 

 Relation of rainfall to alti- 

 tude 



Increase of runoff with in- 

 crease of rainfall 

 Genesee river 



State of New York. By G. W. 



Hudson river 

 Croton river 



Average rainfall in the State 

 of New York 



Length of time required to 

 make good a series of rain- 

 fall records 



Minimum precipitation in New 

 York 

 Runoff 



The laws of stream flow 



Units of measurement 



Characteristics of the mini- 

 mum runoff 



Division of streams into 

 classes 



Estimation of runoff from 



rainfall diagrams 

 Storage in lakes 



Seneca basin 



Oneida basin 



Oswego basin 

 Computation of the annual 



runoff 



Discrepancies in the computa- 

 tion of runoff 

 Actual gagings preferable to 



general studies 

 Formulas for runoff 

 Maximum discharge formulas 

 Coefficient table for represent- 

 ative areas 

 Cooley's formulas 

 Danger of using averages 

 Danger of using percentages 



