Z05460100 USGS H05460100 4308550931607001919033SW0708020378.60 N05460100 Willow Creek near Mason City, IA Y05460100 305460100 19660209 530 89.14 305460100 1967 3254Bm 305460100 1968 3254Bm 305460100 19690708 11002 91.30 305460100 19700514 325 88.11 305460100 19710317 880 90.75 305460100 1972 3404Bm 305460100 19730417 520 89.00 305460100 1974 3404Bm 305460100 19750428 770 90.23 305460100 1976 3404Bm 305460100 1977 3404Bm 305460100 19780615 790 90.75 305460100 19790821 1080 91.83 305460100 19800530 950 91.17 305460100 19810624 720 90.62 305460100 19820316 635 89.94 2 91.01 305460100 19830920 630 90.19 305460100 19840616 1150 91.97 305460100 19850311 595 90.01 305460100 19860318 700 90.42 305460100 1987 1454Bm 305460100 1988 1454Bm 305460100 19890314 415 89.01 305460100 19910518 980 91.40 305460100 19920517 715 90.59 305460100 19930401 1090 91.75 305460100 19940412 820 90.85 305460100 19950528 590 89.86 305460100 19960324 90.63 1 305460100 19970321 90.89 1 305460100 19980621 840 90.96 305460100 19990721 1150 91.92 305460100 20000702 390 88.71 305460100 20010411 789 90.75 305460100 20020805 561 89.68 305460100 20030506 448 89.07 305460100 20040522 1270 92.21 305460100 20050419 555 89.65 305460100 20060330 666 90.19 305460100 20070315 894 91.13 305460100 20080608 2380 93.28 305460100 20090210 6802 90.26 1 305460100 20100312 10702 90.76 1 305460100 20110323 917 90.27 305460100 2012 3574Bm 305460100 20130613 577 89.97 305460100 20140619 828 90.95 305460100 20150724 800 90.87 305460100 20160922 1830 92.25 305460100 20170221 388 89.23 305460100 20180609 1790 92.25 305460100 20190314 6282 90.16 305460100 20200526 503 89.70 305460100 20210828 175 87.96 305460100 20220616 496 89.67 305460100 20230514 338 88.97