A procedure was developed to subdivide a drainage area into units that respond similarly. These were defined hydrologic response units and were a funtion of soil texture, soil depth, land use, and hydrology group classification.
A computer model was developed to generate excess precipitation for each hydrologic response unit based on the Mein and Larson and Holtan infiltration equations. Data for several major storms from a natural watershed, located in Virginia, was used to evaluate the technique. The results showed significant variability between response units reaffirming the need to consider the vegetative-soil characteristics separately.
Sensitivity analyses were made to evaluate variations in soil texture, depth of A horizon, soil hydrology group classification, and land use relative to excess precipitation estimates. Interactions were not studied.
Advantages of this system compared to a lumped-parameter model were discussed. The most important advantage, particularly for the planner, is that spatial uniqueness is maintained for all response units. / M.S.
| Identifer | oai:union.ndltd.org:VTETD/oai:vtechworks.lib.vt.edu:10919/109866 |
| Date | January 1975 |
| Creators | Li, Elizabeth Ann |
| Contributors | Environmental Sciences and Engineering |
| Publisher | Virginia Polytechnic Institute and State University |
| Source Sets | Virginia Tech Theses and Dissertation |
| Language | English |
| Detected Language | English |
| Type | Thesis, Text |
| Format | viii, 124 leaves, application/pdf, application/pdf |
| Rights | In Copyright, http://rightsstatements.org/vocab/InC/1.0/ |
| Relation | OCLC# 39019693 |
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