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Urbanization Impact on Streamflow: Analyzing Municipal Water Inputs

Explore the influence of urbanization on streamflow by analyzing municipal water inputs in a watershed. Results show potential correlations but complexities exist. Future work includes further analysis on different time periods and urbanization indices.

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Urbanization Impact on Streamflow: Analyzing Municipal Water Inputs

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  1. IS WASTE WATER GETTING INTO YOUR LOCAL STREAMS THE ZERO FIELD WORK APPROACH CARSON WERNER 20 Nov 2008

  2. OUTLINE 1. INTRODUCTION – Austin Area and Urbanization 2. HYPOTHESIS – Municipal water inputs are influencing streamflow 3. RESULTS – Is it really? 4. CONCLUSIONS – Maybe. 5. FUTURE WORK 6. QUESTIONS – Do you have any?

  3. THE YEAR IS 1990 IN AUSTIN, TX… Land Use Data – City of Austin

  4. NOW IT IS 2003… Land Use Data – City of Austin

  5. STREET DENSITY Created from City of Austin GIS Data

  6. HYPOTHESIS Increasing urbanization in a watershed increases the input of anthropogenic (municipal and waste) water into streams. Therefore, streams in more urbanized watersheds should flow more perennially than those in relatively un-urbanized watersheds.

  7. TESTING THE HYPOTHESIS

  8. TESTING THE HYPOTHESIS Dates: 04 Apr 2008 - 31 Oct 2008

  9. RESULTS

  10. RESULTS

  11. RESULTS

  12. CONCLUSIONS • Potential correlations very strong, but still complicated. Are there outliers (Walnut, Bull) or two separate systems at work? • Complications come from accuracy of stream gages and number of sample sites. • This correlation is based only on street density, other measures of urbanization may yield different results.

  13. FUTURE WORK • Do same analysis for different periods back in time • Test correlations between zero flow days and different indices of urbanization (land use categories, pipe length) • Explore what may be happening with Bull and Walnut Creeks

  14. DO YOU HAVE ANY QUESTIONS FOR ME TO ANSWER?!

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