Z05481510 USGS H05481510 4209590940111001919015SW0710000423.50 N05481510 Bluff Creek at Pilot Mound, IA Y05481510 305481510 1966 6704Bm 305481510 1967 6704Bm 305481510 1968 6704Bm 305481510 19690319 325 84.55 305481510 1970 6704Bm 305481510 19710218 1952 85.55 1 305481510 1972 2504Bm 305481510 19730926 530 85.46 305481510 1974 2504Bm 305481510 19750408 2502 84.26 1 305481510 1976 2504Bm 305481510 19770816 410 84.97 305481510 1978 2504Bm 305481510 19790310 9202 86.77 305481510 19800530 275 84.23 305481510 1981 2504Bm 305481510 19820613 430 85.05 2 88.93 305481510 19830219 335 84.52 305481510 19840613 1150 88.49 305481510 1985 2504Bm 305481510 19860630 710 87.10 305481510 19861011 370 85.50 305481510 1988 2504Bm 305481510 1989 2504Bm 305481510 19900616 1290 88.85 305481510 19910604 960 88.58 305481510 1992 2404Bm 305481510 19930709 1120 89.25 305481510 19940218 420 85.77 305481510 19950528 453 85.94 305481510 1996 2404Bm 305481510 19970621 310 85.03 305481510 19980615 480 86.19 305481510 19990612 410 85.71 305481510 2000 2404Bm 305481510 20010505 972 86.96 305481510 2002 40.04Bm 305481510 20030709 375 84.73 305481510 20040522 264 85.31 305481510 2005 1994Bm 305481510 20060911 343 84.56 305481510 20070820 1140 88.40 305481510 20080530 697 87.51 305481510 2009 1484Bm 305481510 20100810 1100 88.86 305481510 2011 1494Bm 305481510 2012 1494Bm 305481510 20130527 615 87.18 305481510 20140630 778 87.20 305481510 20150828 1250 89.20 305481510 20151215 528 85.56 305481510 20170520 247 83.73 305481510 20180905 642 86.31 305481510 20190313 9582 87.83 305481510 20200526 515 85.62 305481510 20210303 79.3 81.97 305481510 20220615 152 82.95 305481510 20230618 151 82.93