HR: 1330h
AN: H12E-1029    [PDF]
TI: Investigating Optimal Land-Use Patterns for Nonpoint Source Pollution Control Using an Integrated Hydrological and Land-Use Optimization Model
AU: * Yeo, I
EM: yeo.13@osu.edu
AU: Gordon, S I
EM: gordon.1@osu.edu
AU: Guldmann, J
EM: guldmann.1@osu.edu
AB: The aim of this study is to develop an optimal land-use pattern to reduce nonpoint source pollution at the watershed outlets. This study takes an innovative approach to evaluate the land-use patterns with regards to nonpoint source pollution by coupling a hydrological model and a land-use model. With an assumption that the degree of nonpoint source pollution is positively correlated with the volume of surface runoff, the goal is to find the land-use pattern with a minimal runoff volume. A hydrological simulation model is developed with a modified SCS curve number method. Using a spatially explicit SCS curve number, the geographical impacts of land uses are analyzed. Then an optimization technique is integrated to evaluate different land-use patterns and their response to the rainfall runoff events, and to search for the optimal land-use pattern. By integrating these two methods, we are able to uncover the optimal land-use patterns, which would reduce the peak runoff rate by 15-20 % with 1-, 2-. 5-, and 10-year storm. The model results provide site-specific land-use guidelines and identify critical areas for conservation. The proposed model is applied to the southwestern basin of Lake Erie, Old Woman Creek Watershed (OH).
DE: 1719 Hydrology
DE: 1866 Soil moisture
DE: 6309 Decision making under uncertainty
DE: 6344 System operation and management
DE: 6620 Science policy
SC: Hydrology [H]
MN: 2003 Fall Meeting