A Study of the Applicability of Weather Radar in Streamflow Forecasting.
TEXAS A AND M UNIV COLLEGE STATION DEPT OF OCEANOGRAPHY AND METEOROLOGY
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RAPH SYNTHESIS TO THE 234 SQUARE MILE East Yegua Creek basin in Central Texas. Digitized data for a grid size of 5 mi by 5 mi are obtained from a 10.3-cm radar and are used in the estimation of rainfall over the basin. These data are compared with rainfall measured by 27 recording and non-recording gages spaced uniformly over the basin. Hydrographs have been synthesized for four flood events based on radar-estimated and actually-observed rainfall. The results, when compared with the observed hydrographs, are encouraging. The routing coefficients, however, vary considerably with antecedent soil-moisture conditions, rainfall intensity, and time of the year. The primary difficulty in the use of radar estimated rainfall was that rainfall intensities were underestimated rather severely. The spatial variability of the rainfall was quite good and revealed the capability of radar to measure mesoscale variations of rainfall in a real-time sense. Author
- Hydrology, Limnology and Potamology