State departments of transportation (DOTs) face increasingly stringent requirements for stormwater quantity and quality.
The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 333: Watershed Approach to Mitigating Hydrologic Impacts of Transportation Projects: Conduct of Research Report describes the development of a watershed-based approach to mitigating hydrologic impacts of transportation projects.
The document is supplemental to NCHRP Research Report 1011: Watershed Approach to Mitigating Hydrologic Impacts of Transportation Projects: Guide.
National Academies of Sciences, Engineering, and Medicine. 2022. Watershed Approach to Mitigating Hydrologic Impacts of Transportation Projects: Conduct of Research Report. Washington, DC: The National Academies Press. https://doi.org/10.17226/26765.
Chapters | skim | |
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Front Matter | i-xii | |
Chapter 1. Introduction | 1-2 | |
Chapter 2. Literature Review | 3-16 | |
Chapter 3. Decision Framework for the Watershed Approach | 17-25 | |
Chapter 4. Hydrologic Guidance | 26-65 | |
Chapter 5. Identification and Evaluation of Co-Benefits | 66-123 | |
Chapter 6. Stormwater Banking Opportunities | 124-134 | |
Chapter 7. Case Studies | 135-214 | |
Chapter 8. Summary | 215-217 | |
References | 218-228 | |
Abbreviations | 229-230 | |
Glossary | 231-232 | |
Appendix A. Annotated Bibliography | 233-267 | |
Appendix B. Watershed Model Summaries | 268-278 | |
Appendix C. Existing Screening Tools | 279-291 | |
Appendix D. Mitigation Ratio Tables | 292-295 |
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