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Home My WebLink About01/24/2007 WB Agenda Packet Regular Mtg City of Bakersfield Water Board Regular I~leeting of January 24, 2007 Kern River Channel in Kernville Water Resources File Packet B A K E R S F I E L D WATER BOARD David Couch, Chair Harold Hanson, Vice Chair Zack Scrivner CITY OF BAKERSFIELD WATER BOARD REGULAR MEETING Wednesday, January 24, 2007 - 2:00 p.m. Water Resources Building Conference Room 1000 Buena Vista Road, Bakersfield, CA 93311 AGENDA 1. CALL TO ORDER 2. ROLL CALL 3. MINUTES A. Minutes of the December 11,2006 special meeting for approval - For Board Review and Action 4. PUBLIC STATEMENTS 5. KERN RIVER LEVEE DISTRICT A. FEMA Re-certification of Kern River levees - For Board Information 6. REPORTS A. Kern River & Isabella Reservoir Operations Report - For Board Information 7. DEFERRED BUSINESS A. Water Supply Evaluation for City of Bakersfield and City of Bakersfield Domestic Water Service Area - For Board Review and Information 8. NEW BUSINESS Water Board Agenda Page 2 9. WATER BOARD STATEMENTS 10. CLOSED SESSION A. Conference with Legal Counsel - Existing Litigation. Pursuant to subdivision (a) of Government Code section 54956.9. (2 cases): North Kern Water Storage District v. Kern Delta Water District, et al, Tulare County Superior Court Case No. 96-172919 City of Bakersfield v. Kern Delta Water District, etc., KCSC Case No. S-1500- CV-258097-NFT B. Conference with Legal Counsel - Potential Initiation of Litigation. Pursuant to subdivision (c) of Government Code section 54956.9. (Four issues). 11. CLOSED SESSION ACTION 12. ADJOURNMENT Florn Core Water Resources Manager POSTED: January 19~ 2007 S:\WB MINUTES 2007~WBAGENDAJan2407.doc Water Board Meeting January 24, 2007 3. MINUTES A. Minutes of the December 11,2006 special meeting for approval- For Board Review and Action MINUTES OF THE SPECIAL MEETING OF THE WATER BOARD - CITY OF BAKERSFIELD Monday, December '11, 2006 - '12:00 noon Water Resources Building Conference Room 1000 Buena Vista Road, Bakersfield, CA 93311 1. CALL TO ORDER The meeting was called to order by Chairman Couch at 12:00 noon 2. ROLL CALL Present: Chairman Couch, Hanson, Scrivner Absent: None 3. MINUTES A. Minutes of the November 8, 2006 regular meeting for approval. Motion by Hanson to approve the minute~ APPROVED AiL AYES 4. PUBLIC STATEMENTS None 5. CLOSED SESSION Motion by Scrivner to recess to Closed Session at 12:03p. m. APPROVED, All Ayes A. Conference with Legal Counsel - Potential Initiation of Litigation. Closed session pUrsuant to subdivision (c) of Government Code section 54956.9 (One issue) Chairman Couch adjourned from Closed Session at 1:54 p.m. APPROVED, All Ayes Virginia Gennaro, City Attorney, stated there was no reportable action in Closed Session. 6. ADJOURNMENT Chairman Couch adjourned the meeting at ~:55 p.m. David Couch, Chairman City of Bakersfield Water Board Bobbie Zaragoza, Secretary City of Bakersfield Water Board Water Board Meeting January 24, 2007 5. KERN RIVER LEVEE DISTRICT A. FEMA Re-certification of Kern River levees- For Board Information U.S. Department of Homeland Security 500 C Street, SW Washington, DC 20472 FEMA SE? 2 5 2006 MEMORANDUM FOR: MitigatiOn Division Directors. Regions I - X FROM: David I. Maurstad, Director ,' Mitigation DiVision· SUBJECT: Pro6edure Memorandum No. 43 - Guidelines for Identifying Provisionally Accredited Levees Background: Early in the implementatiOn of the Flood Map Modernization (Map Mod) Effort,. the Department of Homeland SecuritY's Federal Emergency Management Agency (FEMA) recognized that the role of levees in flood risk reduction would be an important part 0fthe efforts of Map Mod. Further, it was acknowledged that·the condition of many levees had not been assessed since they were originally mapped as providing 1-percent-annual-chance (base) flood protection. Because of this, FEMA initiated a revised process to gain a better understanding of the actual flood risks for those citizens living and working behind levees nationwide. On,August 22, 2005, FEMA issued Procedure MemOrandum No. 34, Interim Guidance for Studies Including Levees. The purpose of the memorandum was to help clarify the re~p0nsibility of commUnitY officials or other parties seeking recognition of a.levee by providing information identified:during a study/mapping project. Oftentimes, documentation regarding levee.design, accreditation, and impacts On flood hazard mapping is outdated or missing altogether: To remedy this, ProCedUre Memorandum No. '34 ProVides interim guidance on procedures:~to minimize delays in near-term studies/mapping projects to aid our mapping partners in properly assesSing how to handle levee mapping issues. ISSue: As part of a study/mapping project, itis the levee owner's or community's responsibilitY to provide documentation that the levee meets the requirements of Title 44 of the: Code of Federal Regulations Section 65110 of the National Flood Insurance Regulations (44 CFR Section 65.10). Issuance of the required documentation acts to prevent the levee from being shown as notproviding base flood protection on a Digital Flood Insurance Rate Map (DFIRM). Procedure Memorandum No. 34 allows for the issuance ora deadline to the community for :submitting the required documentation. While 44 CFR Section 65.10 docUmentation is being compiled, the release of more up-to- date DFIRM panels for other parts ora community or county maybe delayed. To Page 2 of 4 Procedure Memorandum No. 43 minimize the impact on the Map Mod goals of mapping areas landward of levees, mapping partners should be provided with guidance that will allow the issuance of preliminary and effective DFIRMs while the levee.owners or community'are given a reasonable amount of time to compile .and submit data and documentation to show compliance with ihe requirements of 44 CFR Section 65.10. Action Taken: To minimize the impact of the levee recognition and certification process on the Map Mod program goals, guidelines have been developed that will allow mapping partners to issue preliminary and effective versions of the DFIRMs while the levee owners or communities. are Compiling the full 'documentation required to show compliance with 44 CFR Section 65110. The guidelines are.summarized in the attached document entitled "Guidelines for Identifying Provisionally Accredited Levees (PAL)". The ::attached document, describes the criteria for five scenarios intended for determining when a levee dOes or does not'qualify for the PAL designation. FEMA has established a. specified timeframe that allows the community or levee owner time to collegt the remaining requirements for 44 CFR Section 65'~10 before t~e.levee is shown on the DFIRM as not providing base flood protection. If the levee qualifies for the PAL designation, FEMA'will provide the community 90 days to.sign and return an agreement that indicates the full documentation for 44 CFR Section 65.10 will be provided within 24 months of the signed agreement. If the signed agreement is not returned t°. FEMA ~within 90 days, or if the l~Vee ~oes. not:meet the PAL requirements, the community is no longer eligible for the PAL designation and the area landward of the levee Will be remapped.as Zone hEior Zone A depending on the tYPe of study performed for the area. For levees that .are included in the U.S. Army Corps of Engineers (USACE~: Federal Program~ FEMA will.conduct active coordination with the appropriate USACE district t° determine those projects.that do not provide protection from the 1-percent-annual-chance :flood., This collaborative effort will evaluate existing data or project-specific information to identify and validate non-accrediting leVees in .the USP~CE'~ inventory. As part of the uSACE's recen~ levee survey, levee projects have been identified within their !nventory to beno longer' eligible for Public Law 84-99 rehabilitation assistance based on the project's last inspection. Ineligible status of these projects denotes maintenance deficiencies and indicates that they would not meet the minimum requirements of 44 CFR Section 65.10. The USACE has developed a written notification process to inform communities or levee owners of this status after coordination with FEMA.has been conducted. Copies :of the USACE :notification letter will be proVided to FEMA. i' If a community or levee owner receives this notification letter, the area landward of the identified levee will be mapped as Zone AE or Zone A as appropriate. Effective on the date of this Procedure Memorandum, for levees that meet the PAL requirement (levees presently shown as providing base flood protection, on the effective DFIRM) and for which the community or levee owner cannot readily provide full documentation of 44 CFR Section 65.10, a map note will be placed landward of the levee to indicate the levee is provisionally accredited and any existing Zone X (shaded)' area is provisional. If there is no existing Zone X (shaded) area on the effective DFIRM, then Page 3 of 4 Procedure Memorandum No. 43 the mapping partner should define the provisional ZOne X.(shaded) area using the best available data; The following note must be applied at several lOcations, point to the levee, and be placed landward of the levee in or near the Zone X (shaded) area: WARNING: Provisionally Accredited Levee. For explanation, see the Notes to Users. The following note to users would .read as follows: wARNING: This levee, dike, or other structure has been provisionally accredited and mapped as providing Protection from the 1-percent-annual-chance flood. To maintain accreditation, the levee owner or community is required to submit documentation necessary to comply with 44 CFR Section.65;lO :by ( . , ). Because oftherisk of overtopping or failure ofthe.s!ructure, communities should take proper precautions to Protect lives and minimize damages in these areas, such as issuing an evacuation plan and encouraging. property owners to purchase flood insurance. The five scenarios for determining whether the levee qualifies for the PAL designation are described in the AttaChment, :Which also summarizes the process for coordinating with community officials and others to acquire the appropriate levee documentation, while moving forward with the production of'countywide mapping for commUnities with : levees. Attachment GUidelines for .Identifying Provisionally Accredited Levees (PALs) cc: See Distribution List Distribution List: (electronic distribution only) Office of the Mitigation Division Director Risk Analysis Branch Risk Reduction Branch Risk Insurhnce Branch Page 4 of 4 Procedure Memorandum No. 43 ~ Federal Insurance and Mitigation Divisions in FEMA Regional Offices Office of Legislative Affairs Office of General Counsel National Service Provider Systems Engineering and Technical Assistance Contractor Map:Service Center Cooperating Technical Partners FEMA Contractors Water Board Meeting January 24, 2007 6. REPORTS A. Kern River & Isabella Reservoir Operations Report- For Board Information KERN RIVER NATURAL FLOW, REGULATED FLOW, & ISABELLA RESERVOIR STORAGE 2006 - 2007 WATER YEAR 1500 600,000 2608.25 Ft.) 550,000 2603.91 Ft.) 1250 ................................................................................................. 500,000 2599.38 Ft.) Isabella Storage 450,000 _~_ '2594.62 Ft.).~.~ C3 1000 400,000 Z O Normal 2589.60 Ft.)l~. O ~ Isabella Storage ._c uJ 350,000 n,' 2584.27 Ft.)._O n 750 300,000 ILl 2578.53 Ft.) ~.~ O 250,000" 2572.24 Ft.) ~ O 500 200,000 2565.18 Ft.)~ 150,000 ~O ~2556.94 Ft.) 03 250 100,000 2546.63 Ft.) 50,000 Regulated Flow 2531.65 Ft.) 0 ...................... .,,,,t,~ ...................... .,,.... ........................... ~ .......... .,.,,;t ........... ~ .............................. .~ ..................... .,,.,~ ...................... ..,,,,....,..~ ........ .,,... ........... h................ .......... ...~ ............. ... ........... ......~ii...~ 0 Oct-06 Nov-06 Dec-06 Jan-07 Feb-07 Mar-07 Apr-07 May-07 Jun-07 Jul-07 Aug-07 Sep-07 1-17-O7 ISABELLA RESERVOIR DALLY OPERATIONS REPORT (All readings are for date of report (WEDNESDAY) as of 0OOl, except as noted.., cfs in italics) Date of Report: January 17, 2007 ISABELLA RESERVOIR 2569.15 Lake Elevation (ft.) 227304 Storage (AcFt) . - 71 Change (AcFt) 365 Inflowto Isabella (cfs) 568075 Storage Capacity 40% % of Capacity 156773 Normal Storage 145% % of Normal Storage For this Date 7145 Average Lake Area (Acres) 10407 Inflow (Month AcFt) 9318 Outflow (Month AcFt) 269 North Fork Mean 250 North Fork @ 0600 Hours 66770 Accumulative Inflow (2007 WaterYear) 377 Mean Outflow 345 Borel Canal 32 Main Dam Outlet 68685 Accum. Outflow (07 WY) 380 Outflow @ 0600 348 Borel Canal @ 0600 Hours 32 Main Dam Outlet @ 0600 Hours Hours 7 24 Lake Evap. (cfs) 0.10 Inches Evap. for 24 Hours 516 Lake Evap. (Month AcFt to Date) 8 0 Spillway Discharge for 24 Hours 38 South Fork near Onyx @ 0600 Hours PRECIPITATION AND TEMPERATURE 9 0.00 Inches of Precipitation at Isabella for 24 Hours 0.29 Inches of Precipitation at Isabella for Month 0 2.86 Seasonal Precip. Isabella 4.48 Normalfor 64% Isabella Precip. (Season: oct 1 through Sep 30) this Date % of Normal 0.00 Inches of Precipitation at Pascoe for 24 Hours 1.20 Inches of Precipitation at Pascoe for Month 2 8.20 Seasonal Precip. Pascoe 15.00 Normal for 55% Pascoe Precip. this Date % of Normal 3 4.1 Upper Tyndall Creek 7.0 Pascoe 6.3 Wet Meadow 4 56 Isabella Maximum Temperature 1.19 Isabella Max. Precip. on Record For this Date 1978 Year of Occurrence 5 26 Isabella Minimum Temperature 57 24 Hour Wind Movement (Miles) NATURAL RIVER FLOW 6 303 Natural Flow (cfs) 10926 Natural Flow (Month to Date) 10926 2007 Jan-Mar Runoff 17 589 Mean Flow 51% Natural Flow 376 Median Flow 81% Natural Flow For this Date in % of Mean For this Date in % of Median 8 4034 Max. on Record 170 Min. on Record 69061 Accum. Natural Flow (07 Water Year) 9 1916 Year of Occurrence 1991 Year of Occurrence 20 397 First Point Flow 9837 First Point (Month to Date) 70987 Accum. First Point (07Water Year) KERN RIVER FACTS & FIGURES: ~ · On th/$ date in 1991, the natural flow of the Kern River amounted to 170 cfs, minimum of record. tn r the month natural flow totaled the record of January 1991, 10,931 acre-feet, breaking imum for the month previously established in 1961 (11,466 acre-feet). On January 3, 1997, Produced by City of Bakersfield the 24-hour yield of the Kern River was 39,261 acre-feet, greatly contributing to an all-time Water Resources Department January natural flow record of 246,022 acre-feet (previous high of 178,493 acre-feet in 1969). (661) 326-3715 KERN RIVER BASIN SNOWPACK ACCUMULATION EIGHT SENSOR INDEX January 17, 2007 40.0 , l 1 997-1998 242% A-J 30.0 '-" 25.0 ' .= Average o 100% of April 1 Average · 20.0 "' 2005-2006 o 12004-2005 ~ 169% A-J 168% A-J / ~ 15.0 ............ ,~ ........ " J 1999-2000 [ 6~O/o ^_jj 1u.u .............. _ .............. 1998-1999 54% A-J November December January February March April Snowpack Accumulation Season CITY OF BAKERSFIELD WA TER RESOURCES DEPARTMENT OFFICIAL Forecasts Feb-Mar-Apr 2007 [UPDATED MONTHLY FORECASTS SERVICE CHANGE NOTICE[ [EXPERIMENTAL TWO-CLASS SEASONAL FORECASTS[ Text-Format .~~) Discussions Monthly .. Lonq Lead 30-& 90-Day Hawaiian Hore Outlooks 0.Smn FMA 2007 1.5mn MAM 2007 2.5mn AM] 2007 3.Stun MIl 2007 4.Smn ]IA 2007 5,Smn ]AS 2007 6.Smn ASO 2007 7.Smn SON 2007 8.Smn OND 2007 9.Smn ND] 2007-08 lO.5mn DJF 2007-08 12.5mn FHA 2008 o. (1971-2000) for FMA Time Series of Skill for all 0.5mn lead foreacsts ~iscussion for explanation) Tools Discussion (updated as new tools are implimented) Canonical Correlation Analysis Optimal Climate Atmosphere ~odel Soil-Moisture Tools ProbaBilitg o~ fixceedence Water Board Meeting January 24, 2007 7. DEFERRED BUSINESS A. Water Supply Evaluation for City of Bakersfield and City of Bakersfield Domestic Water Service Area - For Board Review and Information B A K E R S F I E L D WATER RESOURCES DEPARTMENT MEMORANDUM December 15, 2006 TO: Florn Core, Water Resources Manager FROM: Ma~Lambert, Water Resources Superintendent SUBJECT: Water Supply for Major Developments in Bakersfield Summary This memorandum was prepared to demonstrate that there is an adequate water supply available to meet the demands within the existing City limits and provide water to proposed additional development, without affecting the City's ability to meet its agricultural contract commitments. Currently within the City of Bakersfield there is enough water available to serve an additional 70,000 population. The City is running a surplus of water supply over demand. It is projected that. the City's population in 2012 will be 398,000. The water supply available at the end of the year 2011 will serve a population of over 410,000, meaning the surplus continues through 2011. At the conclusion of the City's agricultural water contracts in 2011, more Kern River water will become available to place in use for urban needs. That supply alone represents the ability to serve an additional 190,000 residents, more than adequate to serve the projected new developments as shown on Table 4 below. The City's existing water supply from all sources is at 139,335 acre-feet per year (afy). Demand is 113,500 afy, thus representing a surplus of 25,835 afy. The demand is projected to increase 31,500 afy by 2011 for a total of 145,000 afy while supplies will increase 10,385 afy to 149,720 afy. A surplus remains on the' books through the termination of the City's agricultural contract period. The City's agricultural contract deliveries are 70,000 afy. Analysis The 2006 population (see Table 1) in the City of Bakersfield is estimated at 311,824 with a water demand of 113,500 afy. The water demand is based on production and delivery. records from the City's Domestic Water System, the California Water Service Co., and Vaughn Mutual Water Company. These three purveyors combined provide water service to over 95% of the City of Bakersfield, thus providing an excellent real-world base for projecting water needs. The projected population in 2012 is estimated to grow to 398,000, equating to a water demand at an estimated 145,000 afy. Overall, using the projected growth rate of the City, the annual average water demand in 2012 will increase by 31,500 afy. Table 1 Bakersfield Population (from Bakersfield Planni% DivisionI Water Demand Year Population (acre-feet) 2006 311,824 113,500 2012 est. 398,000 145,000 Change +86,176 +31,500 pUrveyors supplying water within the City of Bakersfield rely on water from the Kern River, groundwater, the State Water Project and other surface sources. A portion of the surface water supplies are purified and delivered for drinking water and the remaining is recharged or percolated into groundwater aquifers to replenish pumped groundwater. Table 2 was prepared to summarize the available water supplies that are used to meet the demands within the City limits. - -Table 2- Sources of Water Sur, r,,~, Average Annual Water Source/Entity .. Supply (Acre-feet) 2006 2011 Northeast Treatment Plant - City Kern River Entitlement; see Table 3 22,400 22,400 River Channel/Carrier Canal Recharge - City Kern River Entitlement; see Table 3 .. 15,000 15,000 2800 Acre Banking Facility - City Kern River Entitlement see; Table 3 18,200 18,200 Captured Precipitation - Stormwater Percolation Program 13,000 14,900 2800 Acre Banked Groundwater - Interface Project 7,000 8,900 Rosedale Rio Bravo Water Storage District - Allocated State Water Project Supply 415 1,000 Kern Delta Canal Percolation Program - Per City Agreements with KDWD 24,000 30,000 KCWA/Improvement District No. 4 - Allocation of State Water Project to ID#4 Areas Within City Limits Through Groundwater Rechar~)e & Treated Surface Deliveries 39,320 39,320 Total Available Water Supplies 139,335 149,720 Population Water Will Serve 382,740 411,260 2 In comparing the total water demands from Table I to the available supplies shown in Table 2, the average annual water supply exceeds_demand by over 25,000 afy in 2006. The water demand increase over the next 5 years will be at a faster pace than supply increases, however, at the end of 2011, supply will still be in excess of demand. After 2011, increases in demand will be mostly met with City Kern River water that was previously contracted to agricultural districts. -Table 3- Current Diversion & Use Quantities Kern River Entitlement (Acre-feet) 160,000 Agricultural District Contracts -70,000 Northeast Treatment Plant (to Table 2) -22,400 2800 Acre Banking (to Table 2) -18,200 River Channel/Carrier Canal Recharge (to Table 2) -15,000 Isabella Evap/Kern County Parks - 8,700 RRBWSD -10,000 Available Supply for other uses 15,700 - Table 3 shows that the City has a surplus of Kern River water available for current use, if needed, to fulfill deficiencies in demand. Listed in Table 4 below are planned developments either in'the City or requesting to be annexed with the anticipated annual average water supply required at full build-out. The build-out of these projects is anticipated to take 20+ years. Table 4 Annual Demand at Build-out of New Development Projects Ann~al Deman~ at Development Build-Out Project (acre-feet) Rosedale Ranch 6,318 West Ming 6,925 Old River Ranch 5,298 McAIlister Ranch 6,553 Stockdale Ranch 2,700 Riverview 2,149 Manley 592 Gosford/Panama 1,041 Ashe No. 4 1,693 Total 33,269 3 Although the proposed new development water demand will be 33,269 afy at full build-out, it is anticipated that the actual amount-needed in 2012 will be less than 1/2 that. Together with the available supplies beginning in 2012, there will be more than ample water to supply the needs of the projects described in Table 4 at full build-out as well as additional projects. cc: Marc Gauthier, Principal Planner Attachment: Area Map 4 ~ ~ SUP 'PLY MAP` ~ I ~ of Baker~eld ~ ;~ I I~ Development Projec~ ~ KERN DELTA ~ 0 0.5 I 2 3 4 B A K E R S F I E L D WATER RESOURCES DEPARTMENT MEMORANDUM December 15, 2006 TO: Florn Core, Water Resources Manager FROM: Mark Lambert, Water Resources Superintendent SUBJECT: Water Supply Within the City of Bakersfield Domestic Water Service Area Summary This memorandum was prepared to examine the existing water supply being used to currently meet the demands within the existing City Domestic Water Service Area, also known as the Ashe, Fairhaven and Riverlakes systems. · The City Domestic Service Area encompasses over 29,000 acres and is generally west of ~ Stine Road with the majority of new growth to the south and west. The system has over 35,000 connections and serves over 100,000 residents of the estimated 300,000 plus current population in the City. Demand is currently met with pumped groundwater although in 2007 the City anticipates replacing up to 6,500 acre-feet (al) annually with treated surface water from the Kern County Water Agency for use within Improvement District No. 4 (ID#4). An additional treated surface supply will be introduced in January 2007, from a new treatment plant utilizing Kern River water. Initial deliveries will be 5,000 af per year. The City system currently has a water supply available of over 32,000 af (Table 1), with a net demand of less than 31,000al (Table 2). In 2007, the City will see an increase in available water supply to over 42,000af, an additional water supply that can meet the demands of over 10,000 new connections. There are five new development projects planned within the City's service area which have completed a water supply assessment. These projects, when fully completed in 20+ years, will increase the annual net demand by 13,718af (Table 5). Three of these new developments are within the Kern Delta Water District boundaries which will provide a portion of the water supply to those projects. The total annual net demand including the new projects is approximately 44,700af (Table 2 & Table 5). The 2007 average annual available supply is over 42,400af (Table 3). After 2011, increases in demand can be met with City Kern River water that was previously contracted to agricultural districts. In 20+ years the City's Domestic Service Area will require approximately 2,300af (44,700af - 42,400af) of this supply to meet projected demands demonstrating that there is more than an adequate water supply available to meet the City's service area demands. Analvsis. There are multiple sources of water supply for use within the City's Domestic Water Service Area. Table 1 below summarizes those current water supplies used. The City Domestic System currently delivers about 5,000 acre-feet (af) per year from the "2800 Acre" Banking Facility through the City Interface Project. The City and California Water Service Company have a canal percolation program with Kern Delta Water District in which the City's portion amounts to over 6,900 af per year. Approximately 25% of ID#4 is within the City Domestic Service Area. ID#4 has a calculated average annual State Water Entitlement of 61,120 af (74% of 82,594), The average annual captured precipitation in the City Service Area is approximately 5,600 af. Allocated State Water Project from Rosedale Rio-Bravo Water Storage District equals 415 af annually. -- -Table 1- Sources of Water Supply City Domestic Service Area Current Source/Entity Average Annual Water Supply (Acre-feet) 2800 Acre Well Field 5,000 *Kern Delta Canal Percolation Program - Kern River6,500 KCWNImprovement District No. 4 - State Water Project (treated and groundwater) 15,280 5,264 *Captured Precipitation Rosedale RiO Bravo Water Storage District 415 Total 32,459 *Canal Percolation and Captured Precipitation adjusted for 6% loss. The City's System is currently served through'domestic groundwater wells and is 100% metered to customers. In 2007, the City anticipates replacing up to 6,500 af of pumped groundwater within ID#4 with treated surface water from the ID#4 treatment plant through the Northwest Feeder Pipeline Project. An additional 5,000af per year of treated Kern River water will begin in January 2007 through the new treatment plant located at the corner of Coffee and Norris Roads. The current annual gross production for the City Service Area is 35,200 af. To account for landscape deep percolation return to the groundwater basin a typical residential split is applied between water used for 2 landscape/outside use and interior water (water returned to wastewater treatment plant). This split is approximately 60% outdoor and 40% interior water. 'Approximately 20% of outdoor use water is re-introduced to the groundwater basin. Factoring in recharged landscape water with gross demand, Table 2 shows that the current net demand for the City's Service Area is 30,976af. -Table 2- City of Bakersfield Domestic Service Area De,, ,and City Annual Amount Service Area (Acre-feet) Actual Gross Demand 35,200 20% Landscape Groundwater Return -4,224 Net Demand 30,976 ~g split outdoor-intenor use In 2007 and ensuing years as demand dictates, the City expects to increase the use of the 2800 Acre well field and with the additional treated water received from the Coffee/Norris _- Road Water Purification Plant, estimates the sources of water supply to increase to 42,459af (see Table 3). -Table 3- 2007 Sources of Water Supply ... City Domestic Service Area Average Annual Water Source/Entity Supply (Acre-feet) Kern River via 2800 Acre Interface 10,000 Coffee/Norris Rd Treatment Plant 5,000 Kern Delta Canal Percolation Program - Kern River 6,500 KCWNImprovement District No. 4 - State Water Project Captured Precipitation 15~280 5,264 Rosedale Rio Bravo Water Storage District 415 Total 42,459 Table 4 lists the annual demand for planned new developments in the City service area for which a water supply assessment has been completed. The table includes the total acreage of the projects. 3 -Table 4- Annual Demand at Build-out of New Development, Projects Annual Demand at Development Build-Out Proiect , (acre-feet) Acres West Ming 6,925 2,181 Old River Ranch 5,298 1,921 Gosford/Panama 1,041 300 Ashe No. 4 1,693 467 10 Section Project 592 220 Total 15,549 5,089 The Old River Ranch, Gosford/Panama and Ashe No. 4 projects are within Kern Delta Water District boundaries and will receive an allocated supply not yet accounted for in this analysis. With the added acreage to the City's stormwater collection system an additional 906af per year at build-out will be added to the City's captured precipitation - calculation. Listed in Table 5 is the net additional water supply demand needed for the new development projects within the City's service area at build-Out. The build-out of these projects is anticipated to take 20+ years -Table 5- City of Bakersfield Domestic Service New Development Projects Net Demand at Build-out City Annual Amount Service Area (Acre-feet) Actual Gross Demand 15,589 20% Landscape Groundwater Return -1,871 Net Demand 13,718 Using a 60-40 split outdoor-interior use The total annual net demand including these new development projects is 44,694af (Table 2 + Table 5). cc: Marc Gauthier, Principal Planner Attachment: Area Map 4 'D oI~fESTIE: .WATER D/VI~IDN...: ', \ 'SERVi~E AREA· MAP ' -. ~ ....... ~ '. . .:. · 'i · ~ EXISTIN~ · ' SEI~VI~:~E AREA · ~ ~EI~VI{:~E AREA EXPAN~I~IN Water Board Meeting January 24, 2007 10. CLOSED SESSION A. Conference with Legal Counsel- Existing Litigation. Pursuant to subdivision (a) of Government Code section 54956.9. (2 cases): North Kern Water Storage District v. Kern Delta Water District, et al, Tulare County Superior Court Case No. 96-172919 City of Bakersfield v. Kern Delta Water District, etc., KCSC Case No. S-1500- CV-258097-NFT B. Conference with Legal Counsel- Potential Initiation of Litigation. Pursuant to subdivision (c) of Government Code section 54956.9. (Four issues). 11. CLOSED SESSION ACTION ADMINISTRATIVE REPORT WATER BOARD I MEETING DATE: January 24, 2007 I AGENDA SECTION: Closed Session I ITEM: 10.A.B TO: David Couch, Chairman Harold Hanson, Commissioner Zack Scrivner, Commissioner APPROVED FROM: Virginia Gennaro, City Attorney DEPARTMENT HEAD /.-""~- DATE: January 18, 2007 CITY ATTORNEY '~"~-~' SUBJECT: 1. Conference with Legal Counsel m Existing Litigation Closed session pursuant to subdivision (a) of Government Code section 54956.9. (2 cases): · North Kern Water Storage District v. Kern Delta Water District, et al, Tulare County Superior Court Case No. 96-172919 · City of Bakersfield v. Kern Delta Water District, etc., KCSC Case No. S- 1500-CV-258097-N FT 2. Conference with Legal Counsel -- Potential Initiation of Litigation Closed session pursuant to subdivision (c) of Government Code section 54956.9. (Four issues). S:~WATE R\Wat e rBoard~CISessAd min.01-24-0TExt Ut &Pot Init .do(3 1/18/2007