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Show Record which is free to roll back and forth on a cable. The weight was lowered with a windlass. Exhibit 497, prepared by me, is a chart showing the rela-tion of the percentage of suspended matter carried by the river to the discharge or total flow of the river. The dotted line indicates the amount of suspended matter and is measured in percent. The solid black line indicates the discharge and is indicated in second feet. You can see at a glance the fluctuation over a period of rather high 3833 water. On August 1st the percentage of silt of about 14 or 15 percent 3839 and the discharge for the same period was about 23,000 or 24,000 second feet. However, the peak discharge was not recorded until the 2nd day of August, which was about 27,000 or 28,000 second feet. At the same time the percentage of silt had dropped off to about 10 or 11 percent. As far as I have been able to observe there is no definite relation between the stream flow and the discharge of silt carried in the river, but I might say that in general an increase of discharge is accompanied by an increase in the percentage of sus-pended matter carried. Complainant's Exhibit 495, being chart of bed of San Juan River, and 496 and 497, being hydrographs, were received in evidence. Samuel Kenneth Love testified on cross examination as follows: 3840 I have not figured the amount of matter in suspension during the 15 day period covered by my Exhibit 497. I could not make it up from that exhibit, and I do not have the figures for that particular period. I have the figures for the whole period there in the station. The amount of suspended matter carried by the San Juan from July 10th to October 1st, 1929, was 150,000,000 tons. That includes 10 days after I left. I give that as a guide in determining the amount of solid matter in suspension carried by the San Juan River at that particular time. I would not want to use those figures for a period of a year of several years. There is nothing peculiar to Goodridge on the San Juan as a point on the 551 |
