| Abstract: | Physiographic characteristics were used to define the boundaries of five hydrologic regions. Regional regression equations that relate the size of the drainage area to flood magnitude are defined for estimating peak discharges having specified recurrence intervals of 2, 5, 10, 25, 50, and 100 years. Drainage basin size was the most significant independent variable and it accounted for 71% to 95% of the variance in all cases. Discharge of selected mainstem streams where peak discharge is affected by factors of basin geometry was determined graphically. The method is only applicable to sites on ungaged streams that are not affected significantly by regulation upstream from the sites and in which the areas upstream from the sites are not mostly urban areas. (Lantz-PTT) |
| Genre: | USGS Numbered Series |
| ProdID: | 28264 |
| Citation Author: | Lara, O. G. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | 34 p. :ill., map ;28 cm. |
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| Citation Publisher: | U.S. Geological Survey, |
| Citation Series: | Water-Resources Investigations Report |
| Citation Series Code: | WRI |
| Citation Series Number: | 87-4132 |
| Citation Search Results Text: | Method for estimating the magnitude and frequency of floods at ungaged sites on unregulated rural streams in Iowa; 1987; WRI; 87-4132; Lara, O. G. |
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| Citation Year: | 1987 |
| Type: | citation/reference |
| Text: | Method for estimating the magnitude and frequency of floods at ungaged sites on unregulated rural streams in Iowa; 1987; WRI; 87-4132; Lara, O. G. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/wri/1987/4132/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/wri/1987/4132/report.pdf |
| URL (PLATE): | http://pubs.usgs.gov/wri/1987/4132/plate-1.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey, |
