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Urbanization

Urbanization. ERS 482/682 Small Watershed Hydrology. Figure 11-14: Dunne and Leopold (1978). Effects on hydrology. Aurora Reservoir. Effects on hydrology. If storm size stays same (e.g., 2-year storm with 1 inch rainfall) More runoff Higher peak flows More perennial flow.

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Urbanization

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  1. Urbanization ERS 482/682 Small Watershed Hydrology

  2. Figure 11-14: Dunne and Leopold (1978)

  3. Effects on hydrology AuroraReservoir

  4. Effects on hydrology • If storm size stays same (e.g., 2-year storm with 1 inch rainfall) • More runoff • Higher peak flows • More perennial flow

  5. Impacts on receiving waters • Increased channel erosion • Reduced habitat • Reduced wetlands • Increased flooding downstream

  6. Impacts on water quality • Increased loading of • Suspended solids • Nutrients • Heavy metals • Fecal bacteria

  7. “Remedies” • Best Management Practices (BMPs) • Practices that are a combination of management, cultural, and structural approaches that most effectively and economically control urbanization effects without disturbing the quality of the environment

  8. Source: http://www.cwp.org “Remedies” • Best Management Practices (BMPs)

  9. Source: http://www.cwp.org “Remedies” • Best Management Practices (BMPs)

  10. “Remedies” • Best Management Practices (BMPs) Figure 11-17: Dunne and Leopold (1978)

  11. “Remedies” • Best Management Practices (BMPs) Figure 11-22: Dunne and Leopold (1978)

  12. “Remedies” • Best Management Practices (BMPs) Figure 11-19: Dunne and Leopold (1978)

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