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 REPORT DOCUMENTATION PAGE Form Approved OMB No. 0704-0188 The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to the Department of Defense, Executive Services and Communications Directorate (0704-0188). Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ORGANIZATION. 1. REPORT DATE (DD-MM-YYYY) 2. REPORT TYPE 3. DATES COVERED (From - To) February 2010 (Rev May 2011) Project Report 4. TITLE AND SUBTITLE 5a. CONTRACT NUMBER Delaware River Basin Flood Analysis Model Reservoir Operations and Streamflow Routing Component 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) 5d. PROJECT NUMBER Joan Klipsch, CEIWR-HEC-WMS Marilyn Hurst, CEIWR-HEC-WRS 5e. TASK NUMBER Matthew Fleming, CEIWR-HEC-HHT 5F. WORK UNIT NUMBER 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 8. PERFORMING ORGANIZATION REPORT NUMBER US Army Corps of Engineers PR-73 Institute for Water Resources Hydrologic Engineering Center (HEC) 609 Second Street Davis, CA 95616-4687 9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSOR/ MONITOR'S ACRONYM(S) Delaware River Basin Commission 11. SPONSOR/ MONITOR'S REPORT NUMBER(S) 25 State Police Drive PO Box 7360 West Trenton, NJ 08628-0360 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 18. NUMBER 19a. NAME OF RESPONSIBLE a. REPORT b. ABSTRACT c. THIS PAGE OF OF PERSON ABSTRACT PAGES U U U UU 231 19b. TELEPHONE NUMBER 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 Table of Contents 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 i Table of Contents 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 .......................................................................... 65 5.2.1.3 Hale Eddy ......................................................................... 66 5.2.1.4 Pepacton .......................................................................... 68 5.2.1.5 Downsville ........................................................................ 70 5.2.1.6 Harvard ............................................................................. 71 5.2.1.7 Barryville