| Main Title |
Variety, Classification and Association in Rainfall-Runoff Response. |
| Author |
Hawkins, R. H. ;
|
| CORP Author |
Arizona Univ., Tucson. School of Renewable Natural Resources.;Corvallis Environmental Research Lab., OR. |
| Publisher |
Dec 93 |
| Year Published |
1993 |
| Report Number |
EPA-813651-01; EPA/600/R-93/232; |
| Stock Number |
PB94-130374 |
| Additional Subjects |
Watersheds ;
Rainfall-runoff relationships ;
Land use ;
Overland flow ;
Surface runoff ;
Rainfall intensity ;
Storms ;
Runoff coefficient ;
Flow duration ;
Precipitation(Meteorology) ;
Hydrology ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB94-130374 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
50p |
| Abstract |
A study of over 11,000 event rainfall and associated direct runoff events from 100 small watersheds was done, in a search for distinct patterns of runoff response and/or association with land type. Five separate response groups were identified: (1) Inactive, characterized by no recorded responses to any rainstorm in an extended period of record; (2) Complacent, characterized by a very small part of the rainfall (ca 0.1 to 3 percent) being converted to direct runoff, often as a linear response; (3) Standard behavior, the expected 'textbook' response common to agricultural lands and humid sites; (4) Violent behavior, in which an abstraction threshold of 2-6 cm clearly precedes a sudden high response; and (5) Abrupt response in which a very high portion of the rainfall is converted to event runoff without appreciable abstraction, as typified by extensively urbanized drainages. The responses and the group identifications were parameterized by a simple broken-line linear rainfall-runoff equation, and a dichotomous key based on coefficient values is proposed. Only mild associations between response type or coefficient values and the four vegetative covers (Forest, Range, Agriculture, and Urban) were found. |
| Supplementary Notes |
See also PB83-180844. Sponsored by Corvallis Environmental Research Lab., OR. |
| Category Codes |
48G; 55C |
| NTIS Prices |
PC A03/MF A01 |
| Primary Description |
600/02 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
404817230 |
| Origin |
NTIS |
| Type |
CAT |
