Fig. 1. Structure of the sand dams (source: Churchwilnerotary.org).
Fig. 2. Test watershed.
Fig. 3. Test bed of the sand dams.
Fig. 4. Digital elevation model of the watershed.
Fig. 5. Soil map of the watershed.
Fig. 6. Land use of the watershed.
Fig. 7. Locations for the observed flows.
Fig. 8. Flow measurement of the test watershed.
Fig. 9. Simulated and observed flows at the outlet of the watershed.
Fig. 10. Schematic diagram of the sand dam water budget (Case 1).
Fig. 11. Schematic diagram of the sand dam water budget (Case 2).
Fig. 12. Results of reservoir routing (Case 1, without withdrawal).
Fig. 13. Results of reservoir routing (Case 1, 20 m3/d withdrawal).
Fig. 14. Results of reservoir routing (Case 2, without withdrawal).
Fig. 15. Results of reservoir routing (Case 2, 50 m3/d withdrawal).
Table 1. Locations and data periods of the weather stations
Table 2. Monthly weather data for Chuncheon station
Table 3. Monthly weather data for Gapyong-bukmyeon station
Table 4. Design conditions for the sand dams
References
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- http://churchwilnerotary.org