Shaw Environmental & Infrastructure Group CADDO PARISH REGIONA CADDO PARISH REGIONAL WATER/UTILITY DISTRICT Master Plan FINAL REPORT L WATER/UTILITY DIST Phase IV - Feasibility Watershed Analysis Caddo Parish Shreveport, Louisiana RICT PHASE IV Prepared for: Caddo Parish Government Plaza 505 Travis Street, Suite 820 Shreveport, LA 71163-1127 Bossier Parish Bossier Parish Police Jury 204 Burt Blvd. Benton, LA 71006-4901 Only Prepared by: Shaw Environmental & Infrastructure, Inc. 4171 Essen Lane Baton Rouge, LA 70809 Preview Shaw Project No.: 145045 October 2012 i Shaw Environmental & Infrastructure Group CADDO PARISH REGIONA Table of Contents ....................................................................................................... Feasibility Watershed Analysis .............................................................................................. 1-1 1.0 Phase IV Introduction .............................................................................................................. 1-1 2.0 Phase IV Scope......................................................................................................................... 2-1 3.0 Background ................................................................................................................................ 3-1 L WATER/UTILITY DIST 3.1 General ................................................................................................................................. 3-1 3.2 Study Limitations .................................................................................................................. 3-1 4.0 Methodology ............................................................................................................................... 4-1 4.1 General ................................................................................................................................. 4-1 4.2 Assessment of Available Information .................................................................................... 4-1 4.3 Critical Drought Periods ........................................................................................................ 4-1 RICT PHASE IV 5.0 Watershed Analysis ................................................................................................................. 5-1 5.1 General ................................................................................................................................. 5-1 5.2 Watershed Characteristics ................................................................................................... 5-1 5.2.1 Red River Basin ...................................................................................................... 5-1 5.2.2 Cross Lake .............................................................................................................. 5-2 5.2.3 Caddo Lake/Twelve Mile Bayou .............................................................................. 5-3 5.2.4 Lake Bistineau ......................................................................................................... 5-5 5.2.5 Cypress Bayou Reservoir ........................................................................................ 5-7 5.2.6 Black Bayou Reservoir (Bossier Parish) .................................................................. 5-8 5.2.7 Bodcau Bayou .........................................................................................................Only 5-8 5.2.8 Toledo Bend Reservoir ............................................................................................ 5-9 5.3 Climate ............................................................................................................................... 5-10 5.4 Precipitation Data ............................................................................................................... 5-12 5.5 Evaporation ........................................................................................................................ 5-12 6.0 Runoff and Stream Flow Data .............................................................................................. 6-1 6.1 General ................................................................................................................................. 6-1 6.1 Runoff and Stream Flow Data .............................................................................................. 6-1 6.1.1 Red River ................................................................................................................ 6-3 6.1.2 Cross Lake .............................................................................................................. 6-6 6.1.3 Caddo Lake ............................................................................................................. 6-7 6.1.4 Twelve Mile Bayou .................................................................................................. 6-9 6.1.5 ToledoPreview Bend Reservoir ............................................................................................ 6-9 6.1.6 Lake Bistineau ....................................................................................................... 6-10 6.1.7 Cypress Bayou Reservoir ...................................................................................... 6-10 6.1.8 Black Bayou Reservoir (Bossier Parish) ................................................................ 6-11 6.1.9 Bodcau Bayou Reservoir ....................................................................................... 6-12 7.0 Surface Water Use & Treatment Capacity ........................................................................ 7-1 7.1 Surface Water Use ............................................................................................................... 7-1 7.1.1 Red River ................................................................................................................ 7-2 7.1.1.1 City of Bossier City .................................................................................... 7-2 7.1.1.2 Agricultural Uses ....................................................................................... 7-3 7.1.1.3 Other Users ............................................................................................... 7-3 7.2 Cross Lake ........................................................................................................................... 7-3 7.3 Caddo Lake .......................................................................................................................... 7-4 ii Shaw Environmental & Infrastructure Group CADDO PARISH REGIONA 7.4 Surface Water Treatment Capacity ...................................................................................... 7-5 8.0 Water Demand .......................................................................................................................... 8-1 8.1 Current Demand ................................................................................................................... 8-1 8.2 Future Demand .................................................................................................................... 8-3 9.0 Water Yield Determinations ................................................................................................... 9-1 9.1 General ................................................................................................................................. 9-1 L WATER/UTILITY DIST 9.2 Previous Yield Determinations ............................................................................................. 9-1 9.3 Red River ............................................................................................................................. 9-2 9.4 Cross Lake ........................................................................................................................... 9-4 9.5 Caddo Lake .......................................................................................................................... 9-5 9.6 Twelve Mile Bayou ............................................................................................................... 9-6 9.7 Toledo Bend Reservoir ......................................................................................................... 9-6 RICT PHASE IV 9.8 Lake Bistineau ...................................................................................................................... 9-7 9.9 Cypress Bayou Reservoir ..................................................................................................... 9-7 9.10 Black Bayou Reservoir (Bossier Parish) ............................................................................... 9-7 9.11 Bodcau Bayou Reservoir ...................................................................................................... 9-8 10.0 Results and Conclusions ...................................................................................................... 10-1 10.1 General ............................................................................................................................... 10-1 10.1.1 Available Yields ..................................................................................................... 10-1 10.2 Caddo Parish Water Service Populations ........................................................................... 10-2 10.3 Bossier Parish Water Service Populations ........................................................................