Showing papers by "Stanley A. Changnon published in 1964"
TL;DR: In this article, a study of a severe rainstorm in which amounts exceeded 10 inches in 16 hours occurred in southern Illinois and bordering states, and a dense raingage network was located on the major axis of this storm, and one of the heaviest rainfall centers along the axis was enclosed by the network.
Abstract: On 16–17 August 1959, a severe rainstorm in which amounts exceeded 10 inches in 16 hours occurred in southern Illinois and bordering states A dense raingage network was located on the major axis of this storm, and one of the heaviest rainfall centers along the axis was enclosed by the network This network provided data on storm characteristics rarely available in such storms Rainfall amounts in the network storm center exceeded the 100-year frequencies in this area A study of this storm has been made utilizing the dense raingage network data, synoptic weather data, radar observations, US Weather Bureau rainfall data, and 200 field survey measurements of rainfall A statistical model of severe rainstorms is derived and information on the life cycle is presented
16 citations
TL;DR: In this article, a study was made to determine whether low-flow frequency distributions in Illinois could be reliably estimated from meteorological data and geologic factors using a geomorphic index.
Abstract: A study was made to determine whether low-flow frequency distributions in Illinois could be reliably estimated from meteorological data and geologic factors. The development of such a method is desirable because of the general lack of long-term streamflow records. In this study, use was made of 50-year records of precipitation from 62 locations and data from 12 stream-gage stations with 45-year or longer records. When the state was divided into six different geomorphic regions it was found that the low-flow frequencies for any basin in each region could be reliably estimated by the precipitation frequency distribution and a geomorphic index. The regional geomorphic indices were developed through use of data from the 12 basins with long streamflow records. The method developed is applicable for basins of any size, for recurrence intervals of five years or longer, and for drought durations of 12 months or longer. Although based upon Illinois data, the method should be applicable to other regions in the United States and other parts of the world.
13 citations