Z05459490 USGS H05459490 4312480931238001919033SW0708020329.3 N05459490 Spring Creek near Mason City, IA Y05459490 305459490 19660714 720 85.59 305459490 1967 4804Bm 305459490 1968 4804Bm 305459490 19690708 32002 88.41 305459490 19691231 12802 305459490 19710331 495 84.89 305459490 1972 2004Bm 305459490 19721023 705 85.44 305459490 1974 1604Bm 305459490 19750428 2050 88.19 305459490 1976 1404Bm 305459490 1977 1404Bm 305459490 19780615 610 86.16 305459490 19790823 840 86.93 305459490 19800530 3320 90.32 305459490 19810528 1500 88.34 305459490 19820624 270 84.46 2 86.96 305459490 19830628 830 86.81 305459490 19840616 830 86.81 305459490 1985 1154Bm 305459490 19860318 1000 87.25 305459490 19861012 590 86.07 305459490 1988 1154Bm 305459490 1989 1154Bm 305459490 19900825 1820 88.94 305459490 19910518 1900 88.82 305459490 1992 1154Bm 305459490 19930619 2300 89.65 305459490 19940623 1000 87.47 305459490 19950528 420 85.67 305459490 19960617 140 83.83 305459490 1997 90.04Bm 305459490 1998 90.04Bm 305459490 19990721 2030 91.05 305459490 20000614 420 86.61 305459490 20010411 640 87.66 305459490 20020804 90.0 83.67 305459490 2003 27.04Bm 305459490 20040522 5340 91.15 305459490 20050419 3160 90.14 305459490 20060330 71.4 84.38 305459490 20070315 114 84.93 305459490 20080606 4680 92.91 305459490 20090210 5992 85.94 1 305459490 20100312 7602 86.50 1 305459490 20110323 498 85.54 305459490 2012 99.84Bm 305459490 20130613 1690 88.77 305459490 20140619 723 86.13 2 86.78 305459490 20150622 623 85.70 305459490 20160922 3120 90.53 305459490 20170221 301 84.01 305459490 20180608 2940 90.32 305459490 20190314 15502 88.10 1 305459490 20200526 756 86.06 305459490 20210828 325 83.82 305459490 20220413 2430 89.64 305459490 20230514 252 83.38