Delaware River Basin Flood Analysis · PDF file 2015. 1. 21. · Delaware River Basin Flood Analysis Model . Reservoir Operations and . Streamflow Routing Component . February 2010

Delaware River Basin Flood Analysis Model

Reservoir Operations and Streamflow Routing Component February 2010 (Revised May 2011) Approved for Public Release. Distribution Unlimited. PR-73

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4. TITLE AND SUBTITLE Delaware River Basin Flood Analysis Model Reservoir Operations and Streamflow Routing Component

5a. CONTRACT NUMBER

5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER

6. AUTHOR(S) Joan Klipsch, CEIWR-HEC-WMS Marilyn Hurst, CEIWR-HEC-WRS Matthew Fleming, CEIWR-HEC-HHT

5d. PROJECT NUMBER 5e. TASK NUMBER 5F. WORK UNIT NUMBER

7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) US Army Corps of Engineers Institute for Water Resources Hydrologic Engineering Center (HEC) 609 Second Street Davis, CA 95616-4687

8. PERFORMING ORGANIZATION REPORT NUMBER PR-73

9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) Delaware River Basin Commission 25 State Police Drive PO Box 7360 West Trenton, NJ 08628-0360

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12. DISTRIBUTION / AVAILABILITY STATEMENT Approved for public release; distribution is unlimited. 13. SUPPLEMENTARY NOTES

14. ABSTRACT The Delaware River Basin Commission (DRBC) engaged the Hydrologic Engineering Center (HEC), along with the U.S. Geological Survey (USGS), and the National Weather Service (NWS), in the development of a flood analysis model for the Delaware River Basin. The flood analysis model was developed to evaluate the existing reservoirs for flood mitigation and provide data to evaluate the effects of various reservoir operating alternatives on flooding locations downstream of the reservoirs. HEC in coordination with DRBC, USGS and NWS created the HEC-ResSim model of the Delaware River Basin. The purpose of this report is to describe the reservoir modeling and flow routing, focusing primarily on the aspects or features the modelers will need to be aware of as further alternatives are developed. 15. SUBJECT TERMS HEC-ResSim, reservoir, operations, streamflow, routing, Delaware River Basin Commission, DRBC, Delaware River, Delaware River Basin, USACE, HEC, CENAP, watershed, projects, computation points, junctions, basins, reaches, reservoir network, data collection, alternatives, simulations, Delaware River Flood Analysis Model, flood, river system, flood damage reduction, conservation storage 16. SECURITY CLASSIFICATION OF: 17. LIMITATION

OF ABSTRACT UU

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19a. NAME OF RESPONSIBLE PERSON

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Standard Form 298 (Rev. 8/98) Prescribed by ANSI Std. Z39-18

Delaware River Basin Flood Analysis Model

Reservoir Operations and Streamflow Routing Component

February 2010 (Revised May 2011) Prepared for: Delaware River Basin Commission 25 State Police Drive PO Box 7360 West Trenton, NJ 08628-0360 Prepared by: US Army Corps of Engineers Institute for Water Resources Hydrologic Engineering Center 609 Second Street Davis, CA 95616 (530) 756-1104 (530) 756-8250 FAX www.hec.usace.army.mil PR-73

http://www.hec.usace.army.mil/�

Table of Contents

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Table of Contents List of Tables ....................................................................................................................... v List of Figures .................................................................................................................... vii Abbreviations ...................................................................................................................... xi Acknowledgments ............................................................................................................. xiii Executive Summary ........................................................................................................... xv Chapters 1 Introduction 1.1 Background .................................................................................................... 1 1.2 Scope of Model .............................................................................................. 1 1.3 Study Area ..................................................................................................... 2 2 Watershed Setup 2.1 Watershed Creation and Layout ..................................................................... 5 2.2 Stream Alignment ........................................................................................... 6 2.3 Watershed Configurations .............................................................................. 7 2.3.1 Projects .............................................................................................. 7 2.3.2 Computation Points ............................................................................ 9 2.4 Summary...................................................................................................... 14 3 Data Collections 3.1 Time Series Data ......................................................................................... 17 3.1.1 USGS Gage Data ............................................................................. 17 3.1.2 CENAP Gage Data ........................................................................... 17 3.1.3 DRBC Data ....................................................................................... 18 3.2 Model Data ................................................................................................... 18 4 Reservoir Network 4.1 Junctions ...................................................................................................... 20 4.2 Reaches ....................................................................................................... 24 4.3 Reservoirs .................................................................................................... 30 4.3.1 Upper Basin Reservoirs .................................................................... 30 4.3.1.1 Cannonsville ..................................................................... 31 FC Ops - Normal Flood Operations .............................. 36 FC Ops-SpecDiv - Normal Flood Operations, Specified Diversions ................................................. 38 4.3.1.2 Pepacton .......................................................................... 39 4.3.1.3 Neversink ......................................................................... 41 4.3.2 Lackawaxen River Basin Reservoirs ................................................. 43 4.3.2.1 Prompton .......................................................................... 44 4.3.2.2 Jadwin .............................................................................. 44 4.3.2.3 Lake Wallenpaupack ........................................................ 46 4.3.3 Mongaup Basin Reservoirs ............................................................... 47

Table of Contents

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Table of Contents Chapters 4.3.3.1 Toronto ............................................................................. 50 4.3.3.2 Swinging Bridge ................................................................ 51 4.3.3.3 Rio .................................................................................... 53 4.3.4 Lehigh River Basin Reservoirs .......................................................... 54 4.3.4.1 F.E. Walter ........................................................................ 55 4.3.4.2 Beltzville ........................................................................... 56 4.3.5 Mainstem Delaware River Basin Reservoirs ..................................... 57 4.3.5.1 Merrill Creek ..................................................................... 57 4.3.5.2 Nockamixon ...................................................................... 58 5 Alternatives and Simulations 5.1 Alternatives .................................................................................................. 61 5.2 Simulations .................................................................................................. 62 5.2.1 Upper Basin ...................................................................................... 63 5.2.1.1 Cannonsville ..................................................................... 63 5.2.1.2 Stilesville ..............................................................