630 IOWA DEPARTMENT OF AGRICULTURE 



meadow larks on the 18th, blue birds and red wing black birds 22d; Nora 

 Springs, robins on the 22d; Oskaloosa, robins and blue birds on the 14th 

 and 15th; Pocahontas, robins on the 9th; Postville, robins on the 14th; 

 Rock Rapids, robins on the 13th; Whitten, robins on the 2d. Dust: (red) 

 15th, 18th. (See page 33.) Fog: 1st, 10th, 11th, 21st, 25th. Hail: 3d, 

 14th, 18th, 23d, 24th, 28th, 31st. Halos, lunar: 5th, 18th, 28th, 29th. 

 Halos, solar: 4th, 5th, 6th, 7th, 8th, 10th, 13th, 14th, 17th, 19th, 21st, 25th, 

 28th. Thunderstorms: 11th, 14th, 17th, 18th, 23d, 24th, 25th, 27th, 28th, 

 29th, 31st. Sleet: 3d, 4th, 6th, 11th, 12th, 18th, 19th, 23d. Winds: (high) 

 2d, 4th, 12th, 14th, 15th, 16th, 17th, 18th, 22d, 23d, 25th, 27th, 28th, 29th, 

 31st. 



Rivers. The interior rivers were frozen until toward the middle of the 

 month a general break up occurring from the 12th to the 16th. Mod- 

 erately high stages prevailed after the breakup but the flood stage was not 

 reached except on the Des Moines below Tracy to some distance below 

 Ottumwa, due to the formation of ice gorges. Heavy rains in the lower 

 Des Moines watershed on March 24-25 caused flood stages from below 

 Tracy to the mouth. At Ottumwa a crest stage of 12.3 feet, 2.3 feet above 

 flood stage, occurred on the 26th. The Mississippi River was frozen until 

 a break started on the 11th and by the 19th the ice had almost disap- 

 peared. During the first part the stages of this river were moderate but 

 after the break occurred rising stages prevailed and by the end of the 

 month the worst flood of record, so early in the season was approaching. 

 Nearly stationary, but moderate stages prevailed on the Missouri the first 

 of the month but during the last half there were rapid fluctuations with 

 high stages for the season. 



