Z06812000 USGS H06812000 4035450951334001919145SW10240005202 945.32 N06812000 Tarkio River at Blanchard, IA Y06812000 306812000 19340926 182 4.87 306812000 19350531 1920 9.10 306812000 19360428 4330 12.70 306812000 19370521 5620 12.16 306812000 19380820 4240 10.12 306812000 19390312 9980 18.12 306812000 19400429 168 5.95 6