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Modeling Stream Flow of Clear Creek Watershed-Emory River Basin

Modeling Stream Flow of Clear Creek Watershed-Emory River Basin. Presented by Divya Sharon GEOG-5650 Instructor:Dr.Peter Li. Outline. Introduction Background Motivation Models Data requirement Methodology Results Conclusion. INTRODUCTION.

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Modeling Stream Flow of Clear Creek Watershed-Emory River Basin

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  1. Modeling Stream Flow of Clear Creek Watershed-Emory River Basin Presented by Divya Sharon GEOG-5650 Instructor:Dr.Peter Li

  2. Outline • Introduction • Background • Motivation • Models Data requirement • Methodology • Results • Conclusion

  3. INTRODUCTION • Hydrology-Study of Water in the natural or disturbed environment • Factors influencing Watershed Hydrology-Land use, climate and soil conditions. • Need for Stream Flow Modeling-Surface run off-source of non-point source pollution. • Affects land surface characteristics, water balance and hydrologic cycle. • Relationship between land use types and quantity and quality of water.

  4. HYDROLOGIC CYCLE http://www.uwsp.edu/geo/faculty/ritter/images/hydrosphere/hydrocyc.jpg

  5. Background • BASINS-developed by US EPA for watershed based analysis and TMDL development. • Integrates with models HSPF, SWAT, AQUATOX,AGWA…. • HSPF-Hydrologic Simulation Program, Fortran • Watershed model that simulates non-point source runoff and pollutant loadings for a watershed. • Continuous simulation model with fixed, user selected, time steps .

  6. Motivation • To learn modeling software first hand • To experience the modeling process • To understand the various parameters associated with hydrologic process better.

  7. Methodology • Download data-Basin's data extension • Watershed Delineation-Automatic Delineation • Creation WDM file-Weather data management file • Creation of UCI file • Flow calibration • Model validation

  8. Data Requirements • Delineation-NHD, DEM, Watershed Boundary (Hydrologic cataloging Unit layer) • UCI file-Requires-Land use, Reach file, DEM, USGS hydrologic unit boundaries. • Environmental Monitoring data- locations of water quality monitoring stations, weather stations and USGS gaging station.

  9. STUDY AREA • Clear creek watershed part of the Emory River Basin and it lies in cumberland plateau • The land use in the clear creek watershed is approximately 78% forest, 17 % agriculture, 6% developed areas

  10. Land use in Clear creek watershed

  11. HSPF MODEL • Three sub modules-Pervious Land(PERLND), Impervious Land (IMPLND) and Reaches (RCHRES).

  12. Watershed Schematic in HSPF

  13. Parameters for Simulation • Hourly, daily precipitation data- http://www1.ncdc.noaa.gov/pub/orders/609796812343dat.txt Flow calibration-2001-2004 Flow Validation 2005 Annual Volumes and Seasonal Volumes Parameters Estimation

  14. Input Data Editor

  15. Land use Reach Editor

  16. OUTPUT MANAGER

  17. Running the Model

  18. Model Calibration GenScn

  19. Results

  20. Graphs

  21. Graph

  22. Conclusion • HSPF model gives good results • The model simulates the flow well. A correlation coefficient of 0.823 is obtained. • To generate different scenarios. (to track the effect of land use changes on stream flow)

  23. References • http://www.epa.gov/ost/basins/ • http://www1.ncdc.noaa.gov/pub/orders/609796812343dat.txt • http://www.watershedhydrology.com/ • Arthur, Benjamin Bryan., 2003. “Testing the transfer of hydrologic model parameters across scales: Modeling the Emory River, Daddy’s creek, and Crooked fork watersheds” • Patuxent Watershed Model 2005, Internet, April 2005, Available: http://www.chesapeakebay.net/info/model.cfm

  24. QUESTIONS ?

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