Z06811875 USGS H06811875 4044330950746001919145SW102400059.10 N06811875 Snake Creek near Yorktown, IA Y06811875 306811875 19660515 1550 93.87 306811875 19670621 750 91.38 306811875 1968 5104Bm 306811875 19690717 670 91.03 306811875 1970 5104Bm 306811875 1971 5104Bm 306811875 1972 5104Bm 306811875 19730201 1500 93.70 306811875 19740609 1600 94.00 306811875 19750618 970 92.32 306811875 19760522 670 91.01 306811875 19770828 2200 94.83 306811875 19780721 2400 94.73 306811875 19790303 2250 94.10 306811875 1980 7802Bm 306811875 1981 5104Bm 306811875 19820829 2600 94.63 306811875 19830628 1520 91.88 306811875 19840615 1840 92.85 306811875 1985 5104Bm 306811875 19860712 1860 92.92 306811875 19870709 3080 95.24 306811875 1988 5104Bm 306811875 19890908 1700 91.62 306811875 19900617 1640 91.51 306811875 19910601 934 88.69 306811875 19980614 93.33 306811875 20030509 83.29 306811875 20040530 85.35 306811875 20050512 85.46 306811875 20060819 83.09 306811875 20070506 91.03 306811875 20080724 91.72 306811875 20090607 87.14 306811875 20100605 1330 87.38 306811875 20110415 216 81.05 306811875 20120414 564 84.13 306811875 20130605 551 86.52 306811875 20140705 268 84.07 306811875 20150611 2150 93.11 306811875 20160718 1700 90.30 306811875 20170520 443 83.08 306811875 20180903 749 83.87 306811875 20190528 3220 87.30 306811875 20200524 1520 85.27 306811875 20210315 290 82.56 306811875 20211024 836 84.06 306811875 20230515 159 81.97