ORANGE COUNTY WATER DISTRICT SURFACE RECHARGE SYSTEM OPERATIONS MANUAL 2nd Edition April 12, 2021 DIRECTORS OFFICERS DENIS R. BILODEAU, P.E. President JORDAN BRANDMAN STEPHEN R. SHELDON CATHY GREEN First Vice President NELIDA MENDOZA CATHY GREEN DINA L. NGUYEN, ESQ. KELLY E. ROWE, C.E.G., C.H. Second Vice President STEPHEN R. SHELDON TRI TA TRI TA BRUCE WHITAKER General Manager ROGER C. YOH, P.E. MICHAEL R. MARKUS, P.E., D.WRE Acknowledgements Executive Editors Michael R. Markus, P.E., D.WRE, BCEE, F.ASCE ............................... General Manager Mehul Patel, P.E. .......................................................... Executive Director of Operations Core Editorial Staff John Bonsangue ...................................... Director of Recharge and Wetland Operations Don Houlihan (Chief Editor) .......................................... Recharge Operations Supervisor Bill Dunivin.........................Consultant – former OCWD Executive Director of Operations John Vandenbergh .................... Consultant – former OCWD Recharge System Operator Administrative Support Esmer Uribe ...................................................... Senior Administrative Support Specialist Photography Cameron McBeth (Aerial) .......................................................... Environmental Specialist Justin McKeever (Ground Photos) ................... Distribution and Injection Well Supervisor Contributing Field Editors Julio Langarica ...................................................................... Recharge System Operator Matt Buis ........ Assistant Recharge System Operator/Senior Heavy Equipment Operator Jeff Boudreau ........................................................ Assistant Recharge System Operator Special Thanks The Core Editorial Staff would like to thank the Executive Editors for sharing their vision, patience and extremely helpful technical review comments. Additionally, the Core Editorial Staff would like to recognize all OCWD Recharge Staff. Their continuous support is the reason for the Districts successful recharge program. Lastly, the Core Editorial Staff would like to thank the Board of Directors whose guidance and decisions make OCWD an industry leader. Cover photo: Fifteen-foot Imperial Flume measuring diverted flow at the Imperial Headgates into the Upper Off-River System. Table of Contents 1. INTRODUCTION .................................................................................................................. 1 2. OVERVIEW OF OCWD FOREBAY RECHARGE SYSTEM ................................................. 2 3. RIVER RECHARGE SYSTEM OPERATION ....................................................................... 5 A. Imperial Rubber Dam ................................................................................................... 5 a. Trash Rack .............................................................................................................. 7 b. Imperial Diversion ................................................................................................... 8 c. Imperial Bypass ....................................................................................................... 8 B. Upper SAR (between Imperial Dam and 5 Coves Dam) ............................................. 9 a. Upper SAR Temporary Diversion 1: Four Pipes/Gates SAR to Weir Pond 4 ..........10 b. Upper SAR Temporary Diversion 2: Four Pipes/Gates SAR to Upper Off-River .....11 C. Five Coves Site ............................................................................................................12 a. Rubber Dam ...........................................................................................................12 b. Trash Rack .............................................................................................................13 c. Diversion ................................................................................................................14 d. Bypass ...................................................................................................................14 D. Lower SAR (between Five Coves Dam and Chapman Ave) ......................................15 a. Carbon Diversion Channel .....................................................................................15 b. Lower SAR Temporary Diversion 1: Two pipes/gates to Upper Five Coves Basin ..16 c. Lower SAR Temporary Diversion 2: Two pipes/gates SAR to Lincoln Basin ..........16 d. Ball Road Gaging Station .......................................................................................17 e. Ball Road to Chapman Ave. ...................................................................................18 4. UPPER OFF-RIVER SYSTEM (Imperial Flume to Carbon Diversion) .............................19 a. Imperial Flume .........................................................................................................19 b. Weir Ponds 1, 2 and 3 .............................................................................................20 c. Weir Pond 4 .............................................................................................................23 d. Passive System .......................................................................................................29 5. WARNER SYSTEM .........................................................................................................30 a. Foster-Huckleberry Basin ........................................................................................31 b. Conrock Basin .........................................................................................................31 c. Warner and Little Warner Basins .............................................................................32 d. Warner Bypass Pipeline...........................................................................................33 e. Warner Outflow Channel..........................................................................................33 6. UPPER RECHARGE SYSTEM ........................................................................................36 a. Miraloma Transfer Box ............................................................................................36 b. Phase I Pipeline .......................................................................................................38 c. Mini Anaheim Lake ..................................................................................................38 d. Imported Water Connection OC-28 Anaheim Tubs ..................................................40 e. Atwood Channel ......................................................................................................41 f. Anaheim Lake ..........................................................................................................42 g. Phase II Pipeline ......................................................................................................44 h. Carbon Creek ..........................................................................................................45 i. Kraemer Basin .........................................................................................................46 j. Miller Basin ..............................................................................................................50 k. La Jolla Basin ..........................................................................................................53 l. Placentia Basin ........................................................................................................55 m. Raymond Basin .......................................................................................................56 7. LOWER OFF-RIVER SYSTEM ........................................................................................58 a. Upper Five Coves Basin ..........................................................................................59 b. Lower Five Coves Basin ..........................................................................................60 c. Lincoln Basin ...........................................................................................................61 d. Burris Basin .............................................................................................................64 e. Riverview Basin .......................................................................................................67 f. Fletcher Basin ..........................................................................................................69 g. Santiago Basins .......................................................................................................71 h. Lower Santiago Creek .............................................................................................73 8. GROUND WATER REPLENISHMENT SYSTEM RECHARGE SYSTEM ........................74 a. The GWRS Pipeline .................................................................................................74 b. The GWRS Basins ...................................................................................................74 c. La Palma Basin .......................................................................................................75 d. Miraloma Basin ........................................................................................................77 e. Kraemer Basin .........................................................................................................79 f. Miller Basin ..............................................................................................................79