Table 5. --Maximum peak flows (o.f.s.m.) for selected return periods for watersheds west 



of the Continental Divide in Idaho and Montana 



Average 



annual : 





Return p 



eriod 



(years) 









yield : 



2 . 33 



: 5.0 





: 10 



20 









- C f 



O.J. 











0.2 



1.8989 



2.3648 





3. 



0639 



3. 



8924 



0.3 



2.2982 



2.8829 





3. 



6801 



4. 



6489 



0.4 



2.7664 



3.4946 





4. 



3972 



5. 



5242 



0.5 



3.3070 



4.2059 





5. 



2192 



6. 



5222 



0.6 



3.9216 



5.0199 





6. 



1472 



7, 



6432 



0.7 



4.6092 



5.9363 





7. 



1786 



8. 



8830 



0.8 



5.3663 



6.9514 





8. 



3073 



10. 



2335 



0.9 



6.1871 



8.0581 





9. 



5239 



11. 



6827 



1.0 



7.0638 



9.2462 





10. 



8160 



13 



2157 



1.1 



7.9868 



10.5032 





12. 



1695 



14 



8154 



1.2 



8.9455 



11.8146 





13. 



5689 



16 



4635 



1.3 



9.9289 



13.1654 





14. 



9980 



18. 



1414 



1.4 



10.9259 



14.5402 





16. 



4414 



19 



8309 



1.5 



11.9261 



15.9241 





17. 



8839 



21 



5148 



1.6 



12.9196 



17.3031 





19. 



3120 



23 



1778 



1.7 



13.8976 



18.6645 





20. 



7135 



24 



8062 



1.8 



14.8526 



19.9974 





22. 



0783 



26 



3886 



1.9 



15.7782 



21.2924 





23. 



3978 



27 



9155 



2.0 



16.6694 



22.5419 





24. 



6652 



29 



3798 



2.1 



17.5222 



23.7401 





25. 



8756 



30 



7759 



2.2 



18.3339 



24.8825 





27. 



0254 



32 



1004 



2.3 



19. 1026 



25.9662 





28. 



1124 



33 



3509 



2.4 



19.8273 



26.9894 





29. 



1358 



34 



5267 



2.5 



20.5079 



27.9516 





30. 



0954 



35 



6282 



2.6 



21.1447 



28.8530 





30. 



9921 



36 



6565 



2.7 



21.7386 



29.6946 





31. 



8274 



37 



6136 



2.8 



22.2908 



30.4779 





32. 



6033 



38 



5018 



2.9 



22.8030 



31.2051 





33. 



3222 



39 



3244 



3.0 



23.2768 



31.8783 





33. 



9867 



40 



0841 



3.1 



23.7143 



32.5004 





34. 



5997 



40 



7846 



3.2 



24.1173 



33.0739 





35. 



1642 



41 



4292 



3.3 



24.4881 



33.6018 





35. 



6830 



42 



0215 



3.4 



24.8286 



34.0868 





36. 



1592 



42 



5649 



3.5 



25.1407 



34.5317 





36. 



5957 



43 



0626 



3.6 



25.4267 



34.9395 





36. 



9952 



43 



5182 



3.7 



25.6882 



35.3126 





37. 



3605 



43 



9346 



3.8 



25.9273 



35.6537 





37. 



6942 



44.3148 



3.9 



26.1454 



35.9652 





37. 



9987 



44 



6617 



4.0 



26.3445 



36.2494 





38. 



2765 



44 



9781 



4.1 



26.5259 



36.5086 





38. 



5295 



45 



2662 



4.2 



26.6911 



36.7446 





38. 



7599 



45 



5285 



4.3 



26.8415 



36.9595 





38. 



9696 



45 



7672 



4.4 



26.9784 



37. 1552 





39. 



1604 



45 



9842 



4.5 



27.1028 



37.3330 





39. 



3338 



46 



.1816 



4.6 



27.2159 



37.4947 





39. 



4913 



46 



3608 



4.7 



27.3186 



37.6416 





39. 



6344 



46 



5236 



4 



