Accession Number : ADA290388

Title :   Hydrologic Response for Regions of Diverse Physiography and Climate.

Descriptive Note : Final rept. 1 Jul 91-30 Jun 94,

Corporate Author : PRINCETON UNIV NJ DEPT OF CIVIL ENGINEERING AND OPERATIONS RESEARCH

Personal Author(s) : Smith, James A.

PDF Url : ADA290388

Report Date : 16 SEP 1994

Pagination or Media Count : 34

Abstract : The principal objective of this project is to develop a comprehensive scientific understanding of extreme floods that accounts for the dominant hydrometeorological, hydrologic, hydraulic and geomorphic processes at play. An important focus of this project has been on the role of basin scale for land surface and atmospheric processes that control extreme floods. Major theoretical and empirical contributions have been made in the area of hydrologic scaling. Hydrometeorological analyses have relied heavily on high-resolution radar rainfall data from the NEXRAD network of WSR-88D radars. Major contributions have been made in elucidating the structure and importance of storm systems that produce very heavy rainfall over small areas, especially in the central United States. Significant contributions have also been made at the other extreme of spatial scales through analyses of hydrometeorological processes associated with the Mississippi River Flood of 1993. Hydraulic modeling studies have been carried out to assess the dominant controls of flood wave advection and dispersion over extended stream reaches. Hydraulic studies have relied upon U. S. Army models and focused on a 20 km reach of the South Branch Potomac River. Major advances have been made in representing the control of valley floor expansions and constrictions on flow processes for very large floods. (MM)

Descriptors :   *FLOODS, POTOMAC RIVER, WATER FLOW, TERRAIN, METEOROLOGICAL RADAR, HYDROLOGY, CLIMATE, STORMS, RIVERS, RAINFALL, GEOMORPHOLOGY, SOIL EROSION, MISSISSIPPI RIVER, BASINS(GEOGRAPHIC), HYDRAULIC MODELS, STREAMFLOW ANALYSIS, FLOOD PLAINS.

Subject Categories : Hydrology, Limnology and Potamology
      Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE