TABLE 18.--COMPARISON OF VOLUME OF FLOODS, ETC.

+------------------------------+-----------+----------+-------+--------+

| | | Maximum |Cu. ft.| Annual |

| | Drainage | recorded | /sec. | amount |

| River. | area, in | flow, in | per | of |

| | square | cu. ft. |square | rain- |

| | miles. | per sec. | mile. | fall. |

+------------------------------+-----------+----------+-------+--------+

| Santa Catarina, Monterrey, | | | | |

| August 27th, 1907 | 544 | 235,000 | 432 | 22 |

| Estanzuela, near Monterrey, | | | | |

| August 28th, 1909 | 3.5 | 2,900 | 825 | 25 |

| Tansa, India | 52.5 | 35,000 | 666.7 | 101 |

| Krishna, India | 345 | 118,000 | 342.6 | 258 |

| Coquitlam River, Vancouver | 100 | 12,000 | 120 |147-189 |

| Sweetwater, Cal. | 186 | 18,150 | 99 | ... |

| Delaware, Lambertville, N. J.| 6,820 | 250,000 | 36.5 | 45 |

| Colorado, Austin, Tex. | 37,000 | 123,000 | 3.3 | 24.5 |

| Ohio, Cairo, Ill. | 214,000 | 700,000 | 3.3 | 54.9 |

+------------------------------+-----------+----------+-------+--------+

Table 18, compiled by the writer, shows how very extreme the floods of

1909 were compared with those on other rivers, while those of 1910,

referred to by Mr. Saucedo, although not so great, would appear to have

reached a rate of flow of about 300 cu. ft. per sec. per sq. mile of the

drainage area.

The writer agrees with Mr. Saucedo that in the semi-arid regions of Mexico

and the Southern States, and also in India, the possibility of these

abnormal floods is an important consideration in the design of hydraulic

works.

* * * * *

ASCE 1193: The Water-Works and Sewerage of Monterrey, N. L., Mexico The 4th article from the June, 1911, Volume LXXII, Transactions of the American Society of Civil Engineers. Paper No. 1193, Feb. 1, 1911. · 第 47 / 48 题