Errors in Taking Account of the Runoff of the Rivers with Diurnal Variations of the Water Level at the Absence of Increased-Frequency Observations

O. B. Voskresenskii

Estimated are additional errors in taking account of the river runoff during different phases of high water and snowmelt floods using the observational data from gaging stations at the absence of increased-frequency measurements of the water level (due to the lack or downtime of recorders). Described is a method for determination of these errors. Using the data collected on 118 gaging stations on 58 rivers in different regions of Russia and the former USSR for seven years of observations, determined are the possible additional errors of average daily, monthly and annual water flows of the rivers of different sizes as well as the total errors that take account of the additional errors.

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