Z06605100 USGS H06605100 4308130950839001919041SW10230003990.00 1294.56 N06605100 Little Sioux River at Spencer, IA Y06605100 306605100 19370614 3250 13.96 306605100 19380916 5000 14.97 306605100 19390811 1080 9.86 2 9.98 306605100 19400624 503 7.38 306605100 19410310 1340 10.95 306605100 19420831 2170 12.30 306605100 19530608 300007 20.20 306605100 19650406 167007 17.37