Modeling Stream Flow of Clear Creek WatershedEmory River Basin

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Modeling Stream Flow of Clear Creek
Watershed-Emory River Basin

• Presented by
• Divya Sharon
• GEOG-5650
• InstructorDr.Peter Li

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Outline

• Introduction
• Background
• Motivation
• Models Data requirement
• Methodology
• Results
• Conclusion

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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.

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HYDROLOGIC CYCLE
http//www.uwsp.edu/geo/faculty/ritte
r/images/hydrosphere/hydrocyc.jpg
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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 .

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Motivation

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

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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

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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.

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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

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Land use in Clear creek watershed
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HSPF MODEL

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

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Watershed Schematic in HSPF
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Parameters for Simulation

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

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Input Data Editor
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Land use Reach Editor
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OUTPUT MANAGER
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Running the Model
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Model Calibration GenScn
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Results
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Graphs
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Graph
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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)

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References

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

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QUESTIONS ?