RISE AND FALL OF THE COLUMBIA RIVER. 



615 



request to take the amount of deposit every month; and if circumstances permit, shall take 

 observations of the river during the winter freshet, and also next spring. 



Yours truly, 



JOHN D. BILES. 

 GEORGE GIBBS, Esq. 



Observations of Columbia river during the freshet commencing May 8, and ending July 20, 1854; by 

 John .D. Biles, Fort Vancouver, Washington Territory. 



Hour. 



Date. 



Rise. 



Fall. 



Temperature Temperature 

 of air. of water. 



Remarks. 



May 



June 



July 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



23 



24 



25 



2G 



27 



28 



29 



30 



31 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



23 



24 



25 



26 



27 



28 



29 



30 



1 



2 



3 



Inches. 

 2 

 2J 

 34 

 4| 

 4 

 34 

 44 

 5i 

 45 

 4$ 



3 



24 



2 



24 



25 



2 



3 



34 



34 



2 



If 



24 

 44 



10 



Hi 



124 



J4 



Inches, 



1 



34 



64 



J 

 34 

 1 



41.5 



42 



42.5 



43 



42.5 



42. 9 



44 



45.5 



46.5 



46 



45.5 



48 



48.5 



47.5 



48 



47.5 



47 



47.5 



46.5 



47 



49 



49.5 



50 



50. 75 



51.5 



50.5 



50 



49.5 



49 



49.75 



48.5 



47.5 



48 



47.5 



46.5 



46 



47.1 



48.5 



49 



50.5 



51.5 



5] 



52 



52.5 



52 



49.9 



51.5 



53.1 



55 



56 



55.5 



59 



58. 75 



57.5 



51 



52.5 



52.75 



40 



41.2 



41 



42.5 



41.2 



41.5 



43.1 



44 



44.5 



43. 75 



44 



46.5 



46.2 



44.75 



46. 75 

 45. 75 

 44.5 

 45 



45 



45. 5 



46 



46.5 



47.5 



48 



49.2 



49 



48.5 



48 



48.5 



47.75 



46 



45. 75 



46 



46.5 



47.75 



45. 5 



46 



47. 75 

 48.3 

 49 

 50.5 

 49.75 

 50. 5 

 51.75 

 50.5 

 48.5 

 50 



51 



53.1 



53.5 



54 



54.5 



54.9 



55 



47.75 



48 



48.5 



Water very muddy. 



Do. 



Do. 



Do. 

 Water clearer. 



Water muddy. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 

 Water clearing. 



Do. 

 Water clearer. 



Do. 

 Water very muddy. 



Do. 



Do. 



Do. 

 River at a stand. 



Do. 



Commencement of fall. 

 Clearing. 



River at a stand. 



Do. 

 Fall. 



River at a stand. 

 Commence to rise. 



Water clear. 

 Stand. 



