Note 6 — San Geronimo Gravity Supply.
Reading edition
The writer, in a brief article contributed to Engineering News soon after the flood (September 23d, 1909), gave this figure as 271,500, or approximately equal to a run-off of 500 cu. ft. per sec. per sq. mile; but, from a later and more complete study of the conditions for many miles above Monterrey, he believes the above quantity to be approximately correct.