STKKA M FLOW F.X PKkl M K NTs 



40^ 



SUMMARY 



1. Total for the year, 10/1/19 to 



9/30/20 



2. Total for spring flood, 4/8 to 



7/13/20 



3. To crest of flood, 4/8-5/23 



4. After crest of flood (by dif- 



ferences, 2-3) 



5. July, after end of flood 



6. August 



7. September 



8. Whole summer, bysumS, 6, 7. 



9. Whole summer, single calcula- 



tion 



10. Fall and winter freezing pe- 



riod, 10/1/19 to 4/7/20 



11. Total for year, lines 2, 5, 6, 



7, 10 



12. Fall and winter, by differ- 



ences (line 1 minus 2, 5, 6, 

 and 7) 



13. Whole summer, June 1-Sep- 



tember 30 



Critical rates: 



14. First day of flood, 4/8/20 



15. Day of crest on A, 5/23/20..,. 



16. Last day of flood, 7/13/20.... 



17. Last 5 days September, rain- 



less 



Most 



probable 



discliarge 



under forest 



protection 



Inches 



7.608 



5,19.-) 

 2.135 



3.080 

 .240 

 .333 

 .317 

 .890 



1.754 

 7.839 



1.523 

 2.282 



.01140 



.2265 



.0421 



.0554 



Per cent 

 12.6 



14.5 

 29.0 



4.5 

 0.8 

 2.4 

 4.4 

 2.7 



2.9 



-2.7 



9.3 



12.0 

 3.5 



4 t.r/ 



36.9* 



5.4" 



2.0" 



" These percentages are obtained from the original calculations in terms other 

 than ins. O. W., the transposition of figures slightly altering the results. 



fire or removing a narrow strip of timber on either side of the stream- 

 channel, when compared with the most probable flow of this same 

 stream, for conditions of the year as evidenced in climatic records and 

 the flow of a second stream, show the following facts which may or 

 may not be duplicated in succeeding years. 



1. Removal of the forest cover had the effect of causing earlier melt- 

 ing of the snow and a higher rate of flood discharge during the entire 

 flood period from April 8 to July 13, 1920. The excess of flow was 

 most marked in the early stage of the flood and least important at the 

 end. It amounted to 14.5 per cent for the entire flood period. 



