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CC 2018-07-24_09l Monthly Water Supply and Demand Update_June 2018MEMORANDUM TO: CITY COUNCIL FROM: SHANE TAYLOR, UTILITIES MANAGER SUBJECT: MONTHLY WATER SUPPLY AND DEMAND UPDATE DATE: JULY 24, 2018 SUMMARY OF ACTION: The update reports the water supply and demand for June 2018. Current Lopez Reservoir level and projected levels are provided in the attachments. IMPACT ON FINANCIAL AND PERSONNEL RESOURCES: Approximately two (2) hours of staff time is required to prepare the report. RECOMMENDATION: It is recommended the City Council receive and file the monthly Water Supply and Demand Report. BAC KGROUND: On April 25, 2017, the City Council, by resolution, rescinded the Stage 1 Water Shortage Emergency along with related emergency water conservation measures and restrictions. During the public hearing the City Council requested staff to continue preparing the monthly water supply and demand updates. The Council urged citizens to continue to practice every day water saving measures, and reiterated that the previously adopted water conservation measures were to remain in effect. In June 2018, the City’s water use was 214.4 acre-feet with a per capita use of 132 gallons per day/per person. There was a total of 0” of rainfall in June. The water use for the current “rolling” water year from July 2017 to June 2018 was 2,312 acre-feet, which equates to a per capita use of 117 gallons per day/per person. ANALYSIS OF ISSUES: The United States Drought Monitor, as of July 12, 2018 shows San Luis Obispo County in a severe drought. Rain fall to date (July 1, 2017 to June 30, 2018) is 9.23 inches at the Corporation Yard rain gauge. Lopez Lake, as of July 12, 2018, is at 48.1% capacity (23,737 acre-feet of storage). The new water year began on April 1, 2018 and the City’s current total available supply from Lopez is 2,290 acre-feet, our normal entitlement plus 564 acre-feet of surplus water. Item 9.l. - Page 1 CITY COUNCIL MONTHLY WATER SUPPLY AND DEMAND UPDATE JULY 24, 2018 PAGE 2 In addition, we have 1,323 acre-feet of ground water entitlement from the Santa Maria Basin and 200 acre-feet from the Pismo Formation. The projected water use for water year 2018/19 is 2,000 acre-feet if the City receives average rainfall. ADVANTAGES: No advantages noted at this time. DISADVANTAGES: No disadvantages noted at this time. ALTERNATIVES: Not applicable at this time. ENVIRONMENTAL REVIEW: No environmental review is required for this item. PUBLIC NOTIFICATION AND COMMENTS: The Agenda was posted at City Hall and on the City’s website in accordance with Government Code Section 54954.2. Attachments: 1. Lopez Monthly Operations Report for June 2018 1.a. Lopez Monthly Operations Report for March 2018 2. Lopez Reservoir Storage Projection 3. Monthly Water Use Comparison Item 9.l. - Page 2 San Luis Obispo County Flood Control and Water DistrictZone 3 - Lopez Project - Monthly Operations ReportJune, 20180.00Note: Deliveries are in acre feet. One acre foot = 325, 850 gallons or 43, 560 cubic feet. Safe yield is 8,730 acre feet."Year to Date" is January to present for State water, April to present for Lopez deliveries, and July to present for rainfall.575.94April to Present13.27Arroyo Grande2290Lopez Dam OperationsLake Elevation (full at 522.37 feet)488.52Storage (full at 49200 acre feet)24118Rainfall0.01Downstream Release (4200 acre feet/year)367.96Spillage (acre feet)0This MonthYear to Date972.840.00564.00213.18Entl.SurplusUsage2854.00TotalLopez Water Deliveries131.26Oceano CSD30375.0044.73378.00188.85Grover Beach800197.0064.35997.00265.80Pismo Beach892220.0099.991112.0018.79CSA 1224560.006.80305.00205.00112070.0037.87279.310.002270.00State Water Deliveries1180.6445301116.00429.055646.00288.81150185.76Total ContractorDifference (feet)-33.85% Full49.0%Comments:Surplus water shown is as designated per BOS May 15, 2018 Declaration of Surplus Water.1) Oceano supplied State Water to Canyon Crest via Arroyo Grande's Edna turn out. A total of 2.34 AF delivered to Canyon Crest was added to Oceano's State Water usage this monthand 2.34 AF was subtracted from Arroyo Grande's usage this month.April to Present Lopez Entitlement+Surplus Water Usage050100150200250Jul'17Aug'17Sep'17Oct'17Nov'17Dec'17Jan'18Feb'18Mar'18Apr'18May'18Jun'18Acre FeetAGGBOCSDPBCSA12January to Present State Water Usage020406080Jul'17Aug'17Sep'17Oct'17Nov'17Dec'17Jan'18Feb'18Mar'18Apr'18May'18Jun'18Acre FeetOCSDPBCSA12SanMigSan Miguelito45.941276.45This Month%TotalJanuary to PresentUsageThis Month% of Annual RequestUsage% of Annual Request213.18Total Water Deliveries This Month44.7364.35169.9916.116.45514.81Annual Request0.00Usage0.000.000.000.00%0.000.000.000.000.00575.94131.26188.85265.8018.791180.640.00308.00SWP DeliveriesSWP DeliveriesChange in Storage67-18.761148.94This Month Stored State Water0.0%9.3%20.2%14.8%34.7%8.0%18.9%11.2%23.9%2.8%6.2%6.3%18.3%34.5%140.3%0.0%0.0%9.5%20.9%5.7%19.2%5.1%36.2%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%25.2%43.3%23.6%29.8%7.7%26.1%0.0%EntitlementSurplusUsage%Usage%EntitlementSurplusUsage%1167.7Last Month Stored State WaterFriday, July 6, 2018Page 1 of 1Report printed by:AdminData entered by: D. SpiegelATTACHMENT 1Item 9.l. - Page 3-,-, ,-, I-. -~~ , Do, o, lln, 1ml 1• • • • • 1• • • • T I I I ATTACHMENT 1a Item 9.l. - Page 4 Con t1·:1<'to r • .\n'OVO 0,>;11ldC OccanoCSO Orovcr B<ach Pit,mo Bc:i.ch CSA 12 San Miuudito T o t:il San Luis Obis po C ounty F lood C ontrol and W ater D istrict Zone 3 -Lopez P ro ject -M ont hl y O peratio ns R eport M a rc h . 2 0 18 Lo p ez Warrr Drllvrrlrs S ta ir Waln Drll vrrlrs This Mouth .J.pnl ro Ptt-smt 'JlmMomb Ja11c;ay 10 Prtscnt F.nll S::uplm; Tat.1.1 Entitkli~t Snrphi \ f.1111111-n~lll S11rplm Tou l Amnnl Uut,e '., S\\'P ,ICluJW' IA u.u,, ,_,_ o f Annwl SWP ""I""' ,-. Orliw 1:its St-O'l"3.ge Klq\lC'S( Oclivc!"ies U•s:i~ ,. Uiage ,. U~,t ,. u..,., % Usagit ,. ._,, 22:9<) l 249.20 3S39.20 I.W.13 6.30. 0.00 OJW 2l46.32 93.7,~ 0.00 0.0,-21~6.32 60.6¾ 301 s,io so 1143 SO 0 00 0 ~' 5060 6W. 303 10 100 ~· 41):1 39 4S I~' 70749 6 1 9% 227 0 00 00,, 0 00 o~• 800 240.20 10-40.20 00.10 &.)'}.' 0.00 o.cr..· 743.SS 93.6,. 0.00 o.cr..· ?4S.SS 72.01'/4 892 lSJ.UO 2n6.20 0.00 0 .0, 91.82 >.~~ sn.oo 100,0,t 4$U7 2$,(r,~ 135()17 495¾ 1120 19.00 1.r.-i 2800 2.5'-• HS 499.60 7'1460 3 .17 1.3% 0 .00 o.~' S792 35..9% 0.00 o.~-. 87.9 2 11 &% 27 6 .02 22.3% 16.12 597'- 127 8~9 7.Ut 20.SS 16.2,_ 4~0 46<iJ..70 I 9 193.70 :?U.4-0 1 J.7% 14?.4'.!: I J.l ¾ 4 178.U I 9'.!:.'.!:%1 80:?.~ I 1S-S%1 5-040.7~ 54.8% 1~1 J ,t Ol :? ... n, ., I J'.!:.90 6'.67 4.J% 11 1.00 Apr i l to Pre a nt Lopez En ti tt ement+Surp tu:; W .iter Ugge '11,r Moy Jun Jul Auo sep 001 NOv De e Jan Feb M• ·1 1 ·11 ~, ·11 ·11 ·11 ·,1 ·11 ~, ·1a ·,a ·1a le•c 1 cs a ocso o Po •cSA12 I ~c-; Dcli.,-m<$xe 1.11 J«c-fen. ~ ocre foot = }2S. 8$0 pllons o, 43 . ;.cs.o wb 1c f«i. SJfeyidd 1s8.7J0 3(1'¢ ft<1. Lopu Da.i:n O ptt'/IUOll1 l 'h i.9 .:\lo ulh \'till' to Dale 1-lkc Elc\.1oon (full.11522.37 t«c) 491.65 Dufttcnce(foct) I Swr.,g" (full :,1 49'200 ¥:ii' fl'l'I:) 2593-t %f ,.U I R,inbll 8.69 12.67 D<,,.,.n~.)(11 R¢'k-Me (4200 JCtc fie.et.)"t.v) 247.35 34364$ Spillagt (ac1t Cm ) 0 0.00 -30.12 s2.n• Ula)(~ Slee-~ Swie \\'11111•,t ll4.I.Q9 I Th:.11 l.!«.d:iS!/lll'td Su11e W•tter J;inu.iry to Pre a nt St.it• W ;ite r Ugg e l \-1 ------<~ AOr May Jun Jul Aull ~P OCt NOY Dec Wl r el> Mor ·n ·11 ·11 '1 7 ·11 ·11 ·11 ·11 ·n ·10 ·10 ·11 1•0C50DP8 1 CSA1?D ~nM10 I 1176.0S ''Y c-.1c to O...te" tS J.m1,1.,~ to ptesc-t)J roe SIJte wJ.tcr. Apnl to l)(C$('.tllo fo r Lopez ckhvene. • .10d July 10 pw;,c,ut f(l(rauuall c.mnw,1s: Rescr.·oo-1scwrtt1rly opc-r.ned uoc.b the I,o.-.,: Rescrvo11 Re:spon<;,e PWI. R«,e,,."Oll 1s -'00\,e 20.000 Af t:l~do, I' DO 1tductio11 Ul mlillmim:I'!;. I I Sutplus Wll« ffi0'9.'tl is acfll3lly ''Cati)' 0-.·<1" W3tct 3.i dc-s.igruited ill ~ l.RRP IUld updued Fff ROS ?-.by '2, 201 7 Dw,r,b rnt ion of S11rpb ,; 1) Ocf:a:lO ~upplit-d Sb.!!:' Wfltt-1 IO C:llt)'Olt Ct l:'51 \UI .~l'Oy<>Cit~~ Edii:t Mil out A IOl:'.ll of I .SS Af ddiv.,red toCanym Q.,.:I w.u addc,d lo Oceino's Sb.II' W:,tn u,;age lliis mmtl, and J.SS A:Fwa, .w brncwl from Arroyo Gr.tndc-'s ~gc du.> moutb. T o l 11l \\'all'r Dt l in-,ic,.~ ThhMonth l""'+.I} S06 00.l lt0.82 919 8.99 3$9.M 2.500.207.760.220.320.621.702.573.593.873.460.002.004.006.008.0010.0012.0014.000.05000.010000.015000.020000.025000.030000.035000.040000.01/1/20182/1/20183/1/20184/1/20185/1/20186/1/20187/1/20188/1/20189/1/201810/1/201811/1/201812/1/20181/1/20192/1/20193/1/2019Precipitation (in)Storage (AF)DateLOPEZ RESERVOIR STORAGE PROJECTIONActual PrecipitationPredicted PrecipitationActual StorageProjected Storage20,000 AFNote:1. Storage projection is based on predicted rainfall from longrangeweather.com,historic inflow based on predicted rainfall, 18‐19 downstream release requests, and municipal usage.2.  Municipal Usage is based on 2010‐2017 average monthly deliveries.ATTACHMENT 2Item 9.l. - Page 5;:;:-!!. 40000.0 35000.0 30000.0 25000.0 ~ 2-0000.0 "' 3 V'l 15000.0 10000.0 50000 0.0 2 ,o 00 .... 0 ~ .... --.... • 7.76 0.20 0~2 ~ 00 00 .... .... 0 0 0 s ~ ~ .... .... ------N M ., LOPEZ RESERVOIR STORAGE PROJECTION ~ -~ 0~2 0 32 00 00 ~ 00 00 ~ .... .... .... .... 0 0 0 0 0 0 ~ ~ ~ ~ N ~ ...... .... .... .... .... .... .... ------------"' "' .... "' a, ;:! Date 4 00 -.A,tu I rtlt ·at -• Predicted Prec,p · ~ ' .2.00 --ProJected Storag,· --20,000AF 0.00 .00 ]: C: g !! 5. i;i CII 6.00 0:. 3187 3 59 3 ~6 4.00 2 e>7 1 70 2.00 0.00 00 00 a, a, a, .... .... .... .... .... 0 0 0 0 0 ~ ~ ~ ~ ~ .... .... .... .... .... ::.---::.-----N N M .... .... 208.1214.4128132050100150200250June 2017 June 2018Monthly Water Use ComparisonAcre FeetUsage (gpcd)ATTACHMENT 3Item 9.l. - Page 6• •