Water-Supply Paper, Issues 1519-1521

Cover Water-Supply Paper, Issues 1519-1521
Water-Supply Paper, Issues 1519-1521
Geological Survey Us
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Stations 69-74, November 13, 1911, to July 18, 1913. Station 75-86, November 14, 1911, to July 18, 1913. Station 86a, November 18, 1912, to July 18, 1913. Station 87, November 14, 1911, to July 18, 1913.
Drainage area. — About 75 square miles for all stations (may be in error 20 per cent).
Gages. — Vertical staff read to nearest two-hundredths, twice daily, about 4 days in the week.
Diversions. — All low-water run-off is diverted below the stations, but it is estimated that less than 20 per cen
...t of the mean discharge is being utilized; no diversions above the stations.
Accuracy. — At only 24 of the 83 stations maintained is the discharge sufficient to warrant current-meter measurements and ratings; mean discharge at each of the other 59 stations is one-half second-foot or less; the aggregate mean run-off of these 59 stations for the period January 1 to June 18, 1913, is estimated to have been only 4.2 second-feet. As the mean discharge of the 24 streams rated was 194.0 second-feet, the mean run-off for the 59 estimated stations was less than 2 per cent of the total.


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