Z06809900 USGS H06809900 4041400953345001919071SW102400031105 911.33 N06809900 East Nishnabotna River at Riverton, IA Y06809900 306809900 20100628 14700 24.55 306809900 20110218 95202 23.99 1 306809900 20120415 7700 22.08 306809900 20130625 9400 22.02 306809900 20140910 11700 23.65 2 23.86 306809900 20150616 12800 23.97