CC 2019-07-23_08d Monthly Water Supply and Demand Update_June 2019MEMORANDUM
TO: CITY COUNCIL
FROM: BILL ROBESON, PUBLIC WORKS DIRECTOR
BY: SHANE TAYLOR, UTILITIES MANAGER
SUBJECT: MONTHLY WATER SUPPLY AND DEMAND UPDATE
DATE: JULY 23, 2019
SUMMARY OF ACTION:
The update reports the water supply and demand for June 2019. 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.
BACKGROUND:
On April 25, 2017, the City Council, by resolution, rescinded the Stage 1 Water Shortage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 saving measures were to remain in effect.
In June 2019, the City’s water use was 209.4 acre-feet with a per capita use of 129 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 2018 to June 2019 was 2,108 acre-feet, which
equates to a per capita use of 107 gallons per day/per person. There was a total of 19.35”
of rain fall for this period.
ANALYSIS OF ISSUES:
The United States Drought Monitor, as of July 12, 2019 shows San Luis Obispo County
in a normal condition. Rainfall to date (July 1, 2018 to June 30, 2019) was 19.35 inches
at the Corporation Yard rain gauge. Lopez Lake, as of July 12, 2019, is at 58.3% capacity
(28,795 acre-feet of storage).
Item 8.d. - Page 1
CITY COUNCIL
MONTHLY WATER SUPPLY AND DEMAND UPDATE
JULY 23, 2019
PAGE 2
The new water year began on April 1, 2019 and the current total available supply from
Lopez is 2,290 acre-feet, our normal entitlement. 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 2019/20 is 2,200 acre-feet. In conclusion, based
on average rainfall for the next two years, the current supply will meet the projected
demand.
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.
Attachment:
1. Lopez Monthly Operations Report for June 2019
1a. Lopez Monthly Operations Report for March 2018
2. Lopez Reservoir Storage Projection
3. Monthly Water Use Comparison
Item 8.d. - Page 2
San Luis Obispo County Flood Control and Water District
Zone 3 - Lopez Project - Monthly Operations Report
June, 2019
0.00
Note: 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.
553.63
April to Present
28.18
Arroyo Grande 2290
Lopez Dam Operations
Lake Elevation (full at 522.37 feet)496.59
Storage (full at 49200 acre feet)29008
Rainfall 0
Downstream Release (4200 acre feet/year)178.3
Spillage (acre feet)0
This Month Year to Date
555.16
0.00
378.00 204.32
Entl.Surplus
Usage
2668.00
Total
Lopez Water Deliveries
112.57Oceano CSD 303 50.00 38.53353.00
189.59Grover Beach 800 132.00 60.88932.00
307.72Pismo Beach 892 147.00 154.621039.00
16.29CSA 12 245 40.00 7.80285.00
455.55112070.00
40.57278.17
10.982270.00
State Water Deliveries
1179.804530747.00 466.155277.00 554.77150184.47Total
Contractor
Difference (feet)-25.78
% Full 59.0%
Comments:Available Surplus Water is shown and as designated per BOS May 14, 2019 Declaration of
Surplus Water. Beginning with July report, Surplus water shown will be amount purchased by
each agency.
1) Oceano supplied State Water to Canyon Crest via Arroyo Grande's Edna turn out. A total
of 2.25 AF delivered to Canyon Crest was added to Oceano's State Water usage this month
and 2.25 AF was subtracted from Arroyo Grande's usage this month.
April to Present Lopez Entitlement+Surplus Water Usage
0
50
100
150
200
250
Jul
'18
Aug
'18
Sep
'18
Oct
'18
Nov
'18
Dec
'18
Jan
'19
Feb
'19
Mar
'19
Apr
'19
May
'19
Jun
'19Acre FeetAG GB OCSD PB CSA12
January to Present State Water Usage
0
20
40
60
80
100
120
Jul
'18
Aug
'18
Sep
'18
Oct
'18
Nov
'18
Dec
'18
Jan
'19
Feb
'19
Mar
'19
Apr
'19
May
'19
Jun
'19Acre FeetOCSD PB CSA12 SanMig
San Miguelito 47.671276.30
This Month
%
Total
January to Present
Usage
This Month
% of
Annual
Request
Usage % of Annual
Request
204.32
Total Water
Deliveries
This Month
38.53
60.88
224.62
15.97
6.3
550.62
Annual
Request
0.00
Usage
0.00
0.00
0.00
0.00
%
0.00
0.00
0.00
0.00
0.00
553.63
112.57
189.59
307.72
16.29
1179.800.00 414.00
SWP
Deliveries
SWP
Deliveries
Change in
Storage
66 -18.47
1246.75This Month Stored State Water
0.0%
8.9%20.8%
12.7%31.9%
7.6%20.3%
17.3%29.6%
3.2%5.7%
6.3%40.7%
30.3%150.3%
0.0%4.8%
10.3%22.4%5.6%37.0%
5.0%37.5%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
24.2%
37.2%
23.7%
34.5%
6.6%
26.0%0.0%
Entitlement Surplus
Usage %Usage %
Entitlement Surplus
Usage %
1265.22Last Month Stored State Water
Monday, July 8, 2019 Page 1 of 1Report printed by:AdminData entered by:D.Bravo
ATTACHMENT 1
Item 8.d. - Page 3
+---1-1 I -, I --------<O .mi _,_____. .-. . . mm
1 □ ■ □ □ ■ 1 □ □ ■ □
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ATTACHMENT 1a
Item 8.d. - Page 4
Con t1·:1<'tor
• .\n'OVO 0,>;11ldC
OccanoCS O
Orovcr B<ach
Pit,mo Bc:i.ch
CSA 12
San Miuudito
T o t:il
San Luis Ob is po County F lood C on trol and W ater D istrict
Zone 3 -L opez Projec t -:tvfon th ly Opera ti o ns Repo rt
M arch . 2 0 18
Lo pn WMH Dellw1·tes SUie WMH Dell11N1es
This Mouth .~l ro Ptt-sffil 'JlmMomb Ja11c;ay 10 Prtscnt
F.nll S::uplm; Tat.1.1 &itit ld,~t Snrp l ti\ f.J11l11!-n~111 $11rplm Tou l Amn n l Uut,e '., S\\'P ,ICluJW' IA u.u,, ,_,_ of Annwl SWP
""I""' ,-. Orliw 1:its St-O'l"3.ge Klq\lC'S( Oclivc!"ies U•s:i~ ,. Usage % U~_;: ~-u..,., " Usage ~-......
22:9<) l 249.20 3S39.20 l~.13 6.3 .. ~ 0.00 0.0'-' 2l46.32 93.1,. 0.00 o.o,:: 21~6.32 60.6¾
30 3 s,io so 1143 SO 0 00 o ~~ 5060 60"/e 303 10 1000,;, 401 39 4S I.,'. 70749 6 1 9"¼ 227 0 00 0 0,, 0 00 o~•
800 240.20 10-40.20 00.10 s.,,~ 0.00 0.0,:,;. 743.SS 93.<>~• 0.00 o.cr..· ?4S.8S 72.00/4
892 lSJ.UO 2n6.20 0.00 o.o,, 91.82 $J)~.i sn.oo 100.0,t 4$U7 2$J).,: 135() 17 495¾ 1120 19.00 1.r.-i 2800 2.5'-•
HS 499.60 7'1460 3.17 Ll'i 0.00 0 .0% S792 35..9% 0 .00 OJ).,'< 87.9 2 l l S¾ 27 6 .02 22.3% 16.12 597'-
127 8~9 7.Ut 20.SS 16.2,_
4~0 46<iJ..70 I 9 193.70 l U.4-0 1 .s.7%1 14?.4'.!: I .1.1¾ 4 178.19 9 '.!:.1% 80:?.t,6 I 1S.S%1 5-040.7~ I 54.8% 1~1 J ,t Ol 2 ... n, .,
I j'.!:.90 6'.67 4.J% 111 .00
Apr i l to Pre a nt LoP4z Entittem e nt +Surp t u~ W.iter Ugge
'11,r Moy J un J ul Aug 5eP Orel NOV De c Jan Feb M•
·1 1 ·11 ~, ·11 ·11 ·11 ·,1 ·11 ~1 "18 .,. ·18
l••c ■cs a ocso o PB ■csA12 I
~e; Dch,-meure ui J«c fe('f. Oot ocre foot = }2S. 8)0 g.,llons Ot ·0 . ;.cs.o ctib1c f«t. S.,f.e yidd 1s S. 73 0
acre fttt.
Lopu Oil.Ill O ~t·/IUOU1 l 'bh )ll)ulh \'till' tO Dalt
l..lkc Elenoon (full .1, 522.37 :t«c) 491.65 Dlftttcuce(tffl) I
SIOr.lge (full :it 49200 .IIOe fm:) 259),t %f ,dl I
R,inbll 8.69 12.67
D<mn~.)(11R¢-k.;..se(42003Ctt &eb)"t.v) 2,47.}5 )4364$
Spill:igt (x1t fm ) 0 0.00
-30.72
52.7'♦
Ula)(~ Slee-~ Swie \\'11111•,t ll4.I.Q9 I Th:.11 )!«.d/iS!/lll'td Su11e W•tter
J.inu.iry to Preant St.it• W.i ter Ugge
Ator May J u n Jul Aull ~P OCt NOY Dec Wl r e l> Mor
·11 '17 ·17 ~7 ·17 ,1 ·11 ,1 ·17 ·10 '18 '18
1 □0C SO D P8 ■CSA1 ?D ~n M I0 I
1176.0S
''Y c-ac to D..ue"' "J.mt.l.\1)1 10 ptestt)I' fuc ~Jtc w,ucr. Apnl to l)(C$('fil for lopc-z ckhvenes. Md July 10 prC$CUt
f(J(Q;ll'lfaII.
C~• 1s: Re.sct\·oo-1~ cwrtt1dy opcr.ncd uodct rhc Lo,,,.. Rescrvo11 Respon,;c PIJA Res<:f,,"Olf 1~ ,.bot,e
20.000 Af t:IIC'ld01t t101tductio11 Ul mlillmim:I°'. I
I Sucplm W3.ICC fflO\\'tl is acfll3lly ''Cati)' Orff" W3tct 3.~ cks.ignatcd tl ilic l.RRP IUld upducd
J:« R05 ?i.by 2, l017 Dtc.b rntion ofS11rpb ,;
1) Ocea::to ~upplit-d Sb.~I:' ~lt'1 IO C:llt)'OI' Ctl:'SI \UI .~l'~'OCit:'11:di"~ Edi:::t MD Olli. A 10(:'.IJ
of I .SS Af ddivned toCanym 0:~1 w.u addc,d to Oceino's Sb.le Wall'l u.,;age lliis mmtl,
:wt t .SS .AFwa, s'Ubl13.C1td from Arroyo Gr.tndt'i ~gc ttu., moutb.
Toc11I \\'a t l'r
De l in-,ic,.,
ru,Mon1b
);...,:.,
S06
00.1
ll0.82
919
8.99
m .s~
0.00 0.00 0.00 0.00 0.23
2.50
1.19
6.47
8.05
3.94
0.10
2.34
0.000.06 0.32 0.62
1.70
2.57
3.59 3.87
3.46
1.36
0.49 0.08 0.32 0.62
0.00
2.00
4.00
6.00
8.00
10.00
12.00
14.00
0.0
5000.0
10000.0
15000.0
20000.0
25000.0
30000.0
35000.0
40000.0
6/1/20187/1/20188/1/20189/1/201810/1/201811/1/201812/1/20181/1/20192/1/20193/1/20194/1/20195/1/20196/1/20197/1/20198/1/20199/1/201910/1/201911/1/2019Storage (AF)Date
LOPEZ RESERVOIR STORAGE PROJECTION
Actual Precipitation
Predicted Precipitation
Actual Storage
Predicted Storage
20,000 AF
Storage Projection
Note:
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.
ATTACHMENT 2
Item 8.d. - Page 5
40000.0
35000.0
30000.0
25000.0
LI..
~
~ 20000.0 ro ...
0 .....
V)
15000.0
10000.0
5000.0
0.0
---
0.( 6
0.D0 0.D0
00 00 00 .... .... ....
0 0 0
N N N ......... ......... ......... .... .... .... ......... ......... .........
I.O ,-... 00
LOPEZ RESERVOIR STORAGE PROJECTION
I
/i '5 ---.........;:: --...... .... ' o. ./
3. 7 3. ~4
3. 9 3., 6
2 p0 2.' 7 H4
1 0 . ,~
1 9 ~ ,_
0.12 o., 9 0. 2 0 113 0 0 0. )0 0 1 )0
00 00 00 00 °' °' °' °' °' °' .... .... .... .... .... .... .... .... .... ....
0 0 0 0 0 0 0 0 0 0
N N N N N N N N N N ......... ......... ......... ......... ......... ......... ......... ......... ......... ......... .... .... .... .... .... .... .... .... .... .... ......... ......... ......... ......... ......... ......... ......... ......... ......... .........
°' 0 .... N .... N M '<t U"I I.O .... .... ....
Date
-1 Actual recipita ion 14.00 -I Predict •d Preci~ itation -• Actual torage -• Predict ed Stora1 e 12.00
--20,000 I\F
-w wb' ...-,....:\..\.IVI
---------10.00
-
8.00
-----------6.00
4.00
2.00
0.1 8 0.f
0. 2 I 0.1 0 I
2
0.00
°' °' °' °' °' .... .... .... .... ....
0 0 0 0 0
N N N N N ......... ......... ......... ......... ......... .... .... .... .... .... ......... ......... ......... ......... ......... ,-... 00 °' 0 .... .... ....
214.4 209.4
132 129
0
50
100
150
200
250
Jun-18 Jun-19
Monthly Water Use Comparison
Acre Feet Usage (gpcd)
ATTACHMENT 3
Item 8.d. - Page 6
■ ■