HomeMy WebLinkAbout2025-10-16 RVCWD Packet.t1111�
UKIAH VALLEY
WATER AUTHORITY
Redwood Valley County Water District
Regular Meeting
AGENDA
151 Laws Avenue ♦ Ukiah, CA 95482
To participate or view the virtual meeting; go to the following link: https:Hus06web.zoom.us/l/81967367611
Alternatively, you may view the meeting (without participating) by clicking on the date and name of the meeting at
vnvw.cityofukiah.conVmeetings, then go to the media tab.
October 16, 2025 - 5:00 PM
1. CALL TO ORDER AND ROLL CALL
2. AUDIENCE COMMENTS ON NON -AGENDA ITEMS
The Ukiah Valley Water Authority (UVWA) - Redwood Valley County Water District members welcome input from the audience. In
order for everyone to be heard, please limit your comments to three (3) minutes per person and not more than ten (10) minutes
per subject. The Brown Act regulations do not allow action to be taken on audience comments on non -agenda items. If you wish to
submit written comments, please provide information to the UVWA-Redwood Valley, located at 151 Laws Avenue, Ukiah, CA,
95482.
3. APPROVAL OF MINUTES
3.a. 2025-08-21 Redwood Valley CWD Minutes
Attachments:
1. 2025-08-21 Redwood Valley Minutes
4. FINANCIAL REPORTS
FINANCIAL REPORTS
4.a. Check Register August 2025
Attachments:
1. Redwood Check register August 2025
4.b. Check Register September 2025
Attachments:
1. Redwood Check register September 2025
5. ADMINISTRATIVE AND OPERATIONAL REPORTS
5.a. Presentation on Water Supply Updates.
6. UNFINISHED BUSINESS
6.a. Eel Russian Project Authority (ERPA) & IWPC
6.b. Ukiah Valley Water Authority (UVWA)
6.c. Annexation Efforts with Russian River Flood Control
6.d. Small Community Drought Relief Grant Program
Page 1 of 3
Attachments:
1. Opportunities and Constraints Report
7. NEW BUSINESS
Ta. Consideration/Approval of Rate Study — Presentation by Mark Hildebrand
Recommended Action: Approve the rate study as submitted.
Attachments:
1. Redwood Valley 2025 Water Financial Plan 8.19.25
8. COMMITTEE MEMBER ANNOUNCEMENTS AND REPORTS
9. SET NEXT MEETING DATE
9.a. November 20, 2025
10. ADJOURNMENT
Please be advised that the Ukiah Valley Water Authority (UVWA)-Redwood Valley County Water District (RVCWD) needs to be notified 24 hours in
advance of a meeting if any specific accommodations or interpreter services are needed in order for you to attend. UVWA-RVCWD complies with
ADA requirements and will attempt to reasonably accommodate individuals with disabilities upon request. Materials related to an item on this
Agenda submitted to the UVWA-RVCWD Board Members after distribution of the agenda packet are available for public inspection at the front
counter at the Ukiah Civic Center, 300 Seminary Avenue, Ukiah, CA 95482, during normal business hours, Monday through Friday, 8:00 am to
5:00 pm. Any handouts or presentation materials from the public must be submitted to the clerk 48 hours in advance of the meeting; for handouts,
please include 10 copies.
I hereby certify under penalty of perjury under the laws of the State of California that the foregoing agenda was posted on the bulletin board at the
main entrance of the City of Ukiah City Hall, located at 300 Seminary Avenue, Ukiah, California; and at 2370 Webb Ranch Road, Redwood Valley,
California; not less than 24 hours prior to the meeting set forth on this agenda.
Signed: Kim Saylor
Dated: October 9, 2025
Page 2 of 3
Ukiah Valley Water Authority
Redwood Valley County Water District
Regular Meeting
MINUTES
151 Laws Avenue Ukiah, CA 95482
https://usO6web.zoom. us/i/81967367611
August 21, 2025
1. CALL TO ORDER
The Redwood Valley County Water District held a Regular Meeting on July 14, 2025, the meeting was _legally
noticed on August 18, 2025. The meeting was held in person and at the following virtual link:
httpS://us06web.zoom.us/i/81967367611. Chair A. Gaska called the meeting to order at 5:00 p.m. CHAIRA. GASKA
PRESIDING.
ROLL CALL
Roll was taken with the following Directors Present: Ken Todd, Bree Klotter, Tom Schoeneman, , and Chair
Adam Gaska. Directors Absent: Derek Dahlen. Staff Present: Kim Saylor, Deputy Clerk. GM Walker.
2. AUDIENCE COMMENTS ON NON -AGENDA ITEMS
No public comments were received.
3. APPROVAL OF MINUTES
Approval of the Minutes of 2025-07-17 Redwood Valley Minutes.
Motion/Second: Schoeneman/ Todd to approve the Minutes of June 19, 2025, a Regular Meeting. Motion
carried by the following Roll Call votes: AYES: K. Todd, T. Schoeneman, B. Klotter, and Chair, A. Gaska.
NOES: None. ABSENT: D. Dahlen. ABSTAIN: None.
4. FINANICAL REPORT
Quarterly Report. Informational. Olga Keough, Controller, City of Ukiah gave a presentation on how to
read the financial statements.
5. ADMINISTRATIVE AND OPERATIONAL REPORTS GENERAL
MANANGEMENT REPORT:
GM Walker reported that the water sales report will be reversed and rebilled. Water usage is down overall.
OFFICE MANAGEMENT REPORT:
6. UNFINISHED BUSINESS
a Small Community Drought Relief Grant Project.
i. Project conclusion date is end of December.
b Report on Ukiah Valley Water Authority (UVWA) Next Meeting Sept 4, 2025, at 6:OOpm.
c Annexation Efforts with Russian River Flood Control District.
d Eel Russian Project Authority (ERPA) & IWPC: Discussion and Possible Action to pay IWPC
annual Invoices.
Motion/Second: Klotter/ Todd to approve paying half of the invoice now (50,000) and balance due by the
end of the year. Motion carried by the following Roll Call votes: AYES: K. Todd, T. Schoeneman, B.
Klotter, and Chair, A. Gaska. NOES: None. ABSENT: D. Dahlen. ABSTAIN: None.
7. NEW BUSINESS
8.a. Discuss the Rate and Fee study that (Mark Hildebrand) is doing regarding Budgeting for
IWPC/NERF/ERPA and Incorporating it into our Rates. Information given.
8.b. Discussion and Possible Action Regarding a Public Workshop to Discuss RVCWD's Efforts and
Status Regarding being Annexed into Russian River Flood Control District. Ajoint RVWD &
MCRRFC & CID Meeting will be held on Monday September 8, 2025 at 5:30 at Barra Winery.
Motion/Second: Klotter/ Schoeneman to approve Public Workshop to Discuss RVCWD's Efforts and
Status Regarding being Annexed into Russian River Flood Control District. Motion carried by the following Roll
Call votes: AYES: K. Todd, T. Schoeneman, B. Klotter, and Chair, A. Gaska. NOES: None. ABSENT: D.
Dahlen. ABSTAIN: None.
8.c. Comparison of how much water we are pumping from the Lake, going through the Intertie, and how
much water we are billing for. Checking the System for Loss/Theft and whether we should consider
a Water System Loss Audit. Information given.
8.d. Notice of Intent: Consideration of Well Water Main was awarded to Wipf.
Motion/Second: Klotter/ Todd to approve Notice of Intent: Consideration of Well Water Main was awarded to
Wipf. Motion carried by the following Roll Call votes: AYES: K. Todd, T Schoeneman, B. Klotter, and Chair, A.
Gaska. NOES: None. ABSENT: D. Dahlen. ABSTAIN: None.
COMMITTEE MEMBER ANNOUNCEMENTS AND REPORTS
IWPC Meeting Monday July 23, 2025.
8. SET NEXT MEETING DATE: September 18, 2025
Presenter: Kim Saylor, Deputy Clerk
9. ADJOURNMENT
There being no further business, the meeting was adjourned at 7:02 p.m.
Date:
Kim Saylor Deputy Clerk
O �gOZ p J. JC-C CGr t°ntin tQnHH
ar44>bc�nc�ma� rrrr�:�7y� a
bb z z z mm �r GCCaC" burr O
z� r r r>�����r�rrryt�rrntnnnn
�
C) a
rnrnt�np t-
a am�� mm2 d��z0000HHHH~ ��
aa �r��ZZZ �� mmmmH
oo
b v ��b rrro��`�HHHH�ZZZa
pp
o ro o o rr H H a a a Y yry yry
m m m m
H H H H w c' w
U lA U U
O O O O O O 7
'1 O\ -5 cr,
A O �1 V�i N N
C7 C7 C7 C7 �y yd
aar
rrrrr•r�
yy �'
O O O 0 p 0
H
H H H
0000po
O O O O p 0
En (n En W CA
zz z
m
Mmmmmm
d Cl
u
O O O 0 0 C N
A A ? W W NN U O
o0 0�0 0000
W i O O N O
00 cr,
LA LA� W �' W O 00 OW OC LA
O N w a\
N N 00 w
U C� ON ON N N _ O ON U
DUO 0000 O ram-. m '-A W � U w O ~ W Gi Cd
N N O O '17 r N w to n w 00 �l �l -1 �l m m
r r r O~ W a o m V1 w �O �O O lJ1 w N O a a H
vl z m m �1 -d z z l7 y tr1 m r�
h7 .m0p m m l7 z r y- H y
1y r
C C <C1 wro �� C"xx
C) m o H z zz r o o z
m m mo2ZH-a3-30 ti�<C<�zoz���������
Q K m tz m m> b7
c� pp y r0 00
.<
0
a oz
d z y ril
C)
o H
Hey
0 H H
r r r r
obbbo.
a 0
zzzzz
O O O O
O O O O
� w cnEn rCIOrlm n CA cn n w 0 n n� � � � m m m m cn cn cn cn H H n n n 0 n n n a
o c� cmmmmmm O c c o 0 0 o 0 00 O m o 0 o r r r r o o O O m m O O 00 00 0
zr%rCo�oCOZjrro-t�°- y��7��yrrozzx���ynn�n��y�tmn�yX Z ZyZ�c
�cncncn W C wV, nC)C)n�n ozn CD
c x x c �� �ccm�cc�cc�.
rA z z Z CA COP) cnQntocn wcncn W In CAwCAwwwrno
m m m m m m m m m m m m m m m m m m m m
m m m m m m m m m m m m m m m m m m m m
0
0
C
69 69 7
b9 b9 b9 69 N 69 69 W 469 69 69 64 69 ^
69 64 69 `69 �0 69 U N 01 69 69 4b9 b9 69 N 69 H9 69 66 69 69 69 b9 69 69 f:S 69
O O_ 00 W 69 W ~ W U U 1,0 _ _ _ LA69 6R W �C Q\ LA.p �--� ~ �--� 69 A 01
w C�A 4A ~~ ~' N �l �l 01 W 00 O �l W W W w W LA
In O O 10 N N O N to 91 ►�l �1 LA LA 00 �O l In 'A -A O 0 0
N -1 ON -1 O O\ 110 ON --1 O Cl O 00 O O O U I0 �0 O A �0 N O 00 00 .p C� O O Cl O O Cl C
U U -1 U O c.A O �0 ON O v1 O O 0 N O O O O� U U 0 C� 00 N O 41 U -,1 P. 0 Cl 0 Cl 0 0 (0
0
0
a.
CD
d
CD
0
T'
9
T2
In'
C
CD
0
n
a
Q4
C
N
0
N
U)
0
w
0
A
oo00
04 000o Oo
N N N
00 00 N
N
tNn L^ U
aaa
Q Q Q
aaa
MMt7l
r r r
to to to
H H H
�iJ liJ 44 tt_ i U . L. �6 4J J J L..J 44444
J J 4J J 4J 4J 4J 1 J 4J W 4J [.J W 4J 4J 4J W 4J 4] 4] W 4] 41
or4 rp7-r�r��ntnr�lt�i17i=7�tntnmtnrnr�r�tnt%7rntntni1�tni17rna7t�i17
�t7C7'dC17�ti7 �Ov] cn V]0OOOOOOOO000OOOOOOOOOOOOOOOO
� ����J-�•�yr�dr� r r�
o o x
yzz ob b
mroro C) c) cl,
r r
\0 A4� A A-P� A N N N N N N? •P A A A? T C\ O\ 01 01 CN J J J J
N r r r J \O lU \O `O Cl Cl 01 Cl 01 Cl 01 Cl Cl Cl 01 04 CD O C-O CD CD w A •? •P
LA LA U U U U 00 00 00 00 00 00 01 01 Q1 O1 01 O1 01 00 00 00
Oo 'P 'A O J� 10 10 10 10 10 1p w w w w w w 1p 1p 1O \O 10 1p 01 01 O, a, C1 O1 N N N N
�l D, •P v O O O O O O 61 01 D\ a, a\ 01 W W W W W w :+ :.• .-..- U ao ao N
PO PO
N A � O C N N N N N N N N N N N �N N N N 0'a
00 O O W r U LA LAU LA U U v.U, U. LAN LAU U LA LA00 t-A
LA U U U U LA LA`w
O W ram+-. �} N N
C x U Y t[ tin tin v Y
Z>
�N 0 �rn�ihi��rn�����i�i��i
l7 to N��'��„ � vJ v1 n n f� c� f'� c'� c'� n � n c� n n c] C3 C] (� ('� f� C) c�
�R�R.R°R0R°R°R°R°R.R°R.R.R.RoR,�R,R,ROgoR,R°R0ReRaReR.Re
"n �G)G)G) vJrnrt�t�t�tntnmmrztnt�tnt�tntntntnt mmttrtnt�tnmmm
< to ..
rx n Crrr`�]`!J7d rrrrrrrrrrrrrrrrrrrrr- rrrrrrr
cn
Ln cn
P e d d
o d d e
� x
d
yITIItIrlyrdyrordbro0dbbbbbbrdro-drdroro-ordbbbrdrobbrdrd v
zrrrz� m�
9 9 r t7 C7 d m y m n vim]
t� t� W cn M r to m
In cn Ln
G
C)
cn CA W
ffl Hq 469 69 JOS 69 ff3 ff3 f/i In
� ? w ff3 � A N fs9 H9 ff3 f e r s ffl H9 22 H9
Qq W W Q5 b9 yq 69 Ffl fag U O O 00 01 In w N N N N .-. bq bq 69 bq fi] fY3 69 H9 bS b9 N "'� r"
00 �2 :2 r-� (f3 01 ? ? r-� 01 �O 01 W ,A --1 win �] W W O I0 W W w w W W N_ .r 6q f!3 QD tJ �0 01
w .-� N 1O O U? O U w D, 01 U +P, 10 U U -,] 01 O1 U w _ O O 10 w v {a U
w W w -AO O �7 N 00 U --1 Oo �1 ? ID10 01 Cl l 'A --a 10 J J Q1 N �1 W 00 O �l w U ? 00 00 O O1 LA
tJ O Cl LA A O\ O O1 04�- W O1 W M N 10 U 01 O A A vi N i.n O •A 01 •A
00 W W O O W.4 0 0 0 0 10 U U a1 w 10 0 N U 1c -1 4\ A 01 w N O N— 0 1D 4 N N 10 \O 4 D\ O
con
td
bcn
Hx
°zC4
IRO
1tA
�cn�x
try
b7
"'4'4'wnnn
nQ
a n
n
n
n
n
�00001
n n n n14
ro
a
r°
10
b b
m
m
o
0 0,
m
O
o 0
a
z
O
O
z
O O
z z
n
a
Do
o
L
LA
W
ITI (� W
tA
w
00
W
O
N
N
n
\
4�6
C\
l0
O
01
a
C
LA
b
W
a
C
LA
b
ti-+ ll
a a
C C
LA LA
b>
m rob
r x
>
Y
po
m��
CA m
a
Z
z
d
x
CA
m
�
y
y
C
a
CA
G
d
�
a
cnY
mvAEnEnvn
G
d
nnn
'71
R
H
'�
Y
R0
H
n
n
Y Y
ci 0
rm-
H H
°
a
a
G
-C
N_
� O
N O d w
00 CN cn w
C,z�O
z
X x O m
n r7
VH Y O
� r z
o n
o � �
n C
n
o `C
r
r
ar7r7
o
r
r
a
b
m
m
m
a a
r r
,�0zmmm�
addax
dCr�nr�n
rr
a�
va
r C
y
d
d
r
m
n n
n
o
°
H
r
r
n
C C
�
o
n
r
r
m
C7 C7
H H
u
i
n
d
z
m
C4
C
b
N
0
N
U
n
ft:
A
O
LACN
.
C\
LA
J
J A
�r<n4�tOOZ
r
2
2
C)
y
z
X
n
HC
tHi7
H cn
b
m
m
Ln
Hy
v�
on
c
y y
d
C-"
Y x
G�
m v�
z
C
C7
�C
00
N
00
a a
a
a
o
aaza
ID a.
nnC)F)
rrr
d
rrrr
aaaa
aaaa
O 0
0
O
r,.
�'
n
C
nn
n
n.
CD
0
cD
LALA885g
O O
00 00LA
00
00
�c J
W
N
p
d'
A cn
w
=
tp
fD
;per
:0
C7 0
C7
*r7 H
H�
a 'ti a 'b
'b
It
Id
10
cn
cn�
n
"r7 n
n
n
UD
n
n
n
W
n
m
m
cr
H
C
n
n
n
n
n a
C m
m
a O m o m
O
O
O
O
C
C
C
0
m 0
0
0
C
O
O
O
C
O
r
r
O
m
0
0
0
0
0
mrrH�n
��R�f�b'�
ti
z
mzzz
tizzz
rozmmInr
,7
O
m
m
m
m
Cb"
r
r
H
H
H
rb
H
H
H
H
a
r
y
x0
�7
a
r z
z
m m
a a
cn
CA
n
n
n
n
n
n
n
n
n
n�
z�
n
n
n
n
n CD
C m
m
z z
H z H z
H
C
H
C
H
C
H
C
H
C
H
C
H
H
H
H
H
H
H o
v
cn�n
a
a
a
a
a
a
a
a
a
a
a
a
a
m m
r
r
r
r
r
r
r
r
r
r
r
r
r g
W
cn
W
w
m
m
m
m
MMM
m
m
m
m
m
m
C
C
G
C
G
G<
,too
G<<
G<
n
n
m
m
m
m
m
m
m
m
m
m
m
m
m
w
cn
X
cn
(A
W
W
CA
0
P
m
b9
6s
.-
w
R
W
4,.9
bA
0
b9
Eas
4Ee
—
—
—
E9
H9
b9
ba
bA
p
6-369
b9
A
N
w
w
y3
y3
to
A
.-�
C1
O
W
w
�j in
w
�'
•-
69
'"•
bR
togb9
b9
l2
C1
W
W
W
b9
00
O
b9
ON
J
�
�
A
W N
i l
r+
b9
b9
to
O,
—
b9 b9
to
CN
�--� i--•
�--• K
A O
O
A
r-.
W
A
J
N
NJ
00
J
A
O
O
N
w
LA
N lA
O=
Cl
J
w
r-.
w
Q1
O
lA
w r+
.-. 00
00
�o
00
J
�o
J
A
O
Do
to
O
01
U O
O
In
J 0
0
J
W
10
-1
in
W
W
O
0
0
0
C1
1.0
w
w
.A o0
0
0
0 0
0
J 0
O
O
�c
In
00
C�
—
A
J
0
o
A 0
0
0
O
LA
Na
0
J
C\
O
O
O O
O
o
o
o
o
o C
R
z
C
CD
C
R
a
a
a
v
a d
�
r
r
r
r
r On
-,
C
C
G
C
C
c
Gn
On
b9 69
b9
EH
Er9
r-+
J
kA
W W
O
O
O
W
O �--i--
�l
O
O
A
O w .r
O
O
O
.-
R
�
0
�o
z
CD CD
H000c o
p C) 0
w o w w
a�zz�
C
tz
O �1
azoz�
�nrntn
y�'��n
w o�oz
NCO
t
+ oyr
d
a s
a
I
m zT
r
r
H
� N �
J
�] o 0
C) o
0
t7q [ No
O
Y y o
o
a
do
ocn
tz
N
J
O
O
0
C)
0
N p C70 OO OO p CDOO p p
j o- C)o 0 0 C)p o
_ LA o _
D tzi O C7o .Op ? N N N O O
a (Jo 00 w
A
00
r�Iwo
�oo���Yo
cny�a
CA
� tTJ
r�
n ort °z
INJI CO trrl O m t7l a n d
�t a Cai 0
0
11 L
I
w CD
C: ] AOCIoVI t'
CCCC���7777 J 0. lO V V I C
n D NrJOO h
•• 00)V00 OP
H T 000000 CD
I I
wwvi I
wooANWC7IC Cnc
OO
W ACbV`
NCnAtnZ
N0)-P,0c
woornoc
wNrnoc
110
N
0
J
N
N
00
t
�o
we
CD
Oc
N w
C, oll
O Cl Cb
O O O O p O C
O O O O O O O
ii
�i
d0
M00
w,o
C
z
v
-P�
00
•�P
CD
o
°;
O
O
v,
��
41 A
n
O
�3
C)
daN o
x
p
>
>LA
m
on
Cl.
d
El�
o
�CLnQn
g a
rTl
`J
c
C)
C)
pmtnl?i
LA
rn
En
o
'
X
`�
o
rn
�
N
O
N
0
p •C�P �1 Q�
w v
O
O
O 01
, l.h 00
CD
p
O
O
C C,CD
O 0'-h O O
00
4�,
0
o o
°0
C:)0
41
O)
00
00
O
C:)
O
J
C:)
o O
N v
O
O
O
C)
O00
00
O
_
o
wo
w
uj C)
00
� � o C
o
g
w
�
O1
O
C)W
0
oho
J
O
00
C"
C:)
C)>
O
00 CD� 0 00
Y
�C
xx
°° 00
N
O
o0
C::)g
•A
�,C,�,
O
w ih �
20 o -�
•A
x
C:)
O
d
iv
z
0000
o
O
O
N
m
p
O
O
Q v
N Oo
N
�A 4�,
O
�p
P
O
O
Obi w
p
�
N
'00�
N
C:)N
O a O
o
C)
O
W
N
p
O
O
i
O
O
O
w
w w
•
rn
O vn w
O
O
a
m
m
a
a c c a^ G --QQ y w ao o a cao c o rn r. o co 'O
m
crq
� CJ
m
c
0
0
N
N
A
U
to
N
r,
C 7� o, y ono, rn--.-.4rn -',-A— U
r O 110 �p 00 �n U 4 -1,
N W N �+ �--. N ai N cn N b7
� Y y r po 'Z1- opoyy 'oN Nor"op
d 0 Q O O
5 y nbd ti li p bd�yc�� n tnO�vx tiqn
w r y� Y z���� ��zoro
>tTlQ 7 Fy
tTj
W O
N n o
zz �
U
� � U
m o
,•>
00 00N W O �' N 'V
w
LA
O o p CS
w N N O
O o CDp O a
U
�-3 9
ITI
p z
y
0 0 0 0 0 W o o
W � �
N �
•P N
w O U -
00 O W
to In O
p 0 O O CDO U N N
p O O o 0 0 �o y
N
W
U N o p Cr) -3
Vi O
U O N D\ O N N Y
o\ � v, o CD
_ O1 0 0
o v,
00
D\ a O\ O o W CD 0 N N N N >
c-. N M
� � z
O n
W �w5
O
Ch
C) 0 w 0 O O
O O o O C 0
O O O 0 0 0
N a
N 00
i i
00 00 � O N W oo W C 00 0o
00
W kA 11i �-+ rr li
W- U O O ~ O O
PO LA 00 O O CDC•' 00 00
Q N o 0 p> O
• O W O bJ �O �O Cx]
00O W O 00 [-� 00 00 �]
� m
00 N V
W ~ 00 N of O
41 o U 30E r1i 00.11
m
w
ro N N LA N-V
CrJ
N N
,Np .N•' UO
O
C>
roE0 5m
z
m� ! >
y °
En C4
yy �
C
m�
C4
d
-i
P
�o
ro
a
IQ
(D
M
y
m
�C
Cr1
C7
CJ
0
z
Z
r
d
CD
'b
0
CD
CD
CD
O
o
O
A�
O
CCD
O
Ln
N
J
N
�A
O\
.p
O
�
O
CD
O
dG
W
lh
uj
W
W
00
00
C)
00
flA
CN
0
0
0
0
o
O
0
o
_
w �
� �
O
O
00
J
all
00
00
Cn
O\ i
0 01
i
o O�
O
O
N
J _
O
O
N 00 O J p O W O
O O O
o° ono° o
_ rn CD
o
CD
p p 0 0 0 0 0 O
O O w o 0 o p O p p 0
O O O O
a\a,
(j)00
00 00
00 00
J J
00
O O
o 0 0
0
a\ a\
4�-
"h ch
\�o ca
W VA W
00 00
00
J J
vi w
N 00
N
00
00
0 0
C)
O°
0 o
O o 0
O O
O O O
O
0
00
v vi
00 p W
00 00
J J
w 00
k.A
J
O O
C)
CD C:)
C)
O p O
0
i
CD CD '�CD CD CD
CD
p'
�
C Q- S= z < .fl CD n `L3 n N n
O CD ¢PD
*k 'O N n C (D r
C, .:3 . b CD (D (D O Q a O p= z Q ri
(� O o CD
n C�7 O 0
tQ CL �+ N
ti �" (D
CD
CD b 0
a Q
a
z
o
o �
�
CD b _
0 `� C
C o ID
I
(D
z
Ou
'
CIO Cl)Dn
CD CD
CD
tt .o .n
.n .o
n
Q C
c c
c
y CD
CD CD
CD
w N
d
�
d
trJ
�
y
0
b
y
w
D
c
z
cn
y
i
:y N
O
A
0 7o `l� O O
r- 8C-D. D- OQ
C
ML
z
R
CD
It
F.r .
Q..
5
Opportunities and Constraints Report
Lake Mendocino Surface Water Intake Infrastructure Lowering
October 9, 2025
Prepared for:
Redwood Valley County Water District
LACO
we are passionate about
strengthening our rural
communities
Prepared By:
LACO Associates, Inc
21 W Fourth Street
Eureka, California 95501
707-443-5054
Project No. 8049.03
SURVEYORS
ENGINEERS In
PLANNERS GRANT WRITERS
Pr : par by: Lily Cohen, EIT
800 51 5-5054
www.lacoussaicates.com
Eureka I Ukiah I Santa Rosa I Chico Reviewed by: Rod Wilburn, PE
Native Owned I Community Partners I Trusted Advisors
Opportunities and Constraints Report
Lake Mendocino Surface Water Intake Infrastructure Lowering
Redwood Valley County Water District
Table 0FContents
7.0
INTRODUCTION ............................... ........................................................... ----''----__—'l
2.0
BACKGROUND ....... -------_--------------._---'--_---_---1
2.lRVCWDServices and Location ............................................................................. --.----'7
2.2Existing Infrastructure ..........................................................................................................................
l
2.3Water Rights ........................................................................................................................................
2
3/0
ALTERNATIVE OPTIONS .................................................................................
3
llALTERNATIVE l:Extend Intake Laterals ....................................... .................................................
3
3.2ALTERNATIVE 2:Floating Intake .......................................................................................................
4
3.3ALTERNATIVE 3:Submerged Screened Manifold ........................................................................
4
4.0
[)PP(}RTUM|TIE5........................... ..................................... ................... _---.--'-------'5
4.lPhysical ---.--------------_----------~---------------.5
4.2Operational -----------------------------------------'5
4.3Regulatory and Institutional .---.................................................................................................
6
4.4Alternative Specific Opportunities ...................................................................................................
6
5.0
CONSTRAINTS ........................................................ .................... ........................... ---------7
5.lPhysical ----_---------------_----------------_---7
52Financial ----------------.—'------------_---_--_--7
5.3Permitting/Environmental --------_------------.—_._-------.7
5.4Alternative Specific Constraints ............................................ ..................................................... —'8
60
DATA GAPS ....................................... —..................... .......................................... ---------'8
7.0
FUNDING OPPORTUNITIES ................................................................... —............................................
P
8.0
ANALYSIS {)FFINDINGS ...... .............................................................................. ....................................
9
Native Owned | Community Partners |Trusted Advisors
Opportunities and Constraints Report
Lake Mendocino Surface Water Intake Infrastructure Lowering
Redwood Valley County Water District
10.0 REFERENCES...............................................................................................................................................11
APPENDIX 1 12
APPENDIX 2 13
APPENDIX 3 14
Native Owned I Community Partners I Trusted Advisors
Opportunities and Constraints Report
Lake Mendocino Surface Wafer Intake Infrastructure Lowering
Redwood Valley County Water District
1.0 INTRODUCTION
This report presents a preliminary evaluation of constraints, opportunities, and data gaps associated with
lowering the elevation of the Redwood Valley County Water District (RVCWD) surface water intake
infrastructure connected to the Lake Mendocino pump station. This report aims to explore potential
infrastructure modifications that achieve RVCWD's stated goal of lowering the elevation of the surface water
intake infrastructure to improve access to water during times of drought and present the opportunities and
constraints of the identified options. This report will provide the RVCWD Board of Directors with information
and context to determine appropriate next steps for evaluating the actual feasibility and constructability of
lowering the intake infrastructure based on recent bathymetric data collected in 2014 from the U.S. Army
Corps of Engineers, as -built documentation from 1977 of the water intake infrastructure, and a contextual
analysis of the existing site conditions.
The Lake Mendocino pump station and intake infrastructure are located at the northwesternmost bend in
the Lake, and the exact location can be found on the location map in Appendix 1. The lake intake lowering
effort supports long-term water supply resilience for RVCWD customers. This report outlines potential
alternatives for concept design development, funding acquisition strategies, and factors that require further
consideration to determine the appropriate next steps.
2.0 BACKGROUND
2.1 RVCWD Services and Location
Redwood Valley is a census -designated place in Mendocino County, California, 9 miles north of the City of
Ukiah. The community contains a population of approximately 2,117 people (US Census Bureau 2023). The
RVCWD was established January 16, 1964, and began serving as a dual distribution system in 1979 for both
irrigation and domestic water services. RVCWD's service area is roughly 15 square miles and serves a total of
1,105 equivalent dwelling units (EDU) and 197 agricultural customers (Russian River Flood Control & Water
Conservation Improvement District 2025). According to the most recent RVCWD Sphere of Influence from
2016 (Mendocino LAFCo 2016), RVCWD has historically delivered approximately 750 acre-feet peryear (AFY)
for residential and commercial uses, and 1,450 AFY for agricultural purposes for a combined annual demand
of 2,200 AFY. Due to uncertain supply, RVCWD is currently under a court -ordered moratorium for domestic
connections and a board -initiated moratorium for irrigation connections (Mendocino LAFCo 2016). The June
2025 Redwood Valley Annexation Draft Plan explains that since 2021, RVCWD has implemented a limited
municipal supply of 55 gallons per person per day (assuming 3 people per EDU), which equates to 204 AFY
for domestic use, driven by physical limitations in the capacity of water distribution infrastructure, which
interties RVCWD with neighboring districts. This represents a significant decline in residential and commercial
uses compared to the standard service in 2016.
2.2 Existing Infrastructure
RVCWD's current primary water supply is sourced from a treated municipal intertie with Millview County
Water District, a recent water purchase agreement with the Mendocino County Russian River Flood Control
and Water Conservation District (RRFC), and surplus RRFC water delivered through RVCWD's own
infrastructure, including the Lake Mendocino pump station which includes three separate pumps, Lake
Project No. 0 5 2��
October9, 20225
Page 1 of 14 Native Owned I Community Partners I Trusted Advisors i o c o o s s o c i o t e s. c o m
Opportunities and Constraints Report
Lake Mendocino Surface Water Intake Infrastructure Lowering
Redwood Valley County Water District
Mendocino water intake infrastructure, a holding reservoir, and a nearby water treatment plant discussed in
this memo.
The existing Lake Mendocino water intake infrastructure features three separate 500-horsepower (HP) pumps,
each with intake pipes/screens, that exit the wet well of the cylindrical concrete structure at a 90-degree
angle. The intake structures in the lake are stacked vertically at different depths. According to the review
of the RVCWD discharge plans, dated 1977, the current intake system collects water from the three existing
42-inch intake barrels and discharges into the existing pump house via the three horizontal 16-inch lateral
runs. The laterals then discharge the water into a water collection pool at the bottom of the pump house.
The water is then pumped up to the top of the pump house, where the three existing pumps are located.
The pumping of water to the top of the building creates a syphon for the 16-inch laterals to pull water from
the elevations at which they were built. For the original 1977 full site plans of the Lake Mendocino pump
house and intake infrastructure, see Appendix 2. For a plan view of the existing intake infrastructure
placement, see Appendix 3. This existing infrastructure will pose limitations on the feasibility of alternative
options and constructability.
2.3 Water Rights
RVCWD is burdened by limited access to reliable water due to water rights complexities and legal
ownership of water stored within Lake Mendocino:
• RVCWD holds a largely unavailable right to divert up to 4,900 Acre -Feet (AF) per year from Lake
Mendocino between November 1 st and April 30th—but only when both flow and flood storage
thresholds are met. These conditions typically do not occur in the vast majority of water years.
• RVCWD may purchase surplus water from RRFC per a 1980 court judgment, since only a minority of
the RVCWD service area is encompassed by RRFC's jurisdictional boundary. This surplus water is not
guaranteed, especially during droughts, and was entirely unavailable in 2021-2022, leaving
agricultural users with no deliveries. This surplus water comes from the Lake Mendocino pumping
station.
• In May 2025, RVCWD and RRFC entered a Uniform Water Supply & Purchase Agreement (UWS&PA)
to provide 328.85 A F of water supply to serve the small overlap area for the two Districts. Should RRFC
successfully modify its boundaries to include the entirety of RVCWD's service area, RVCWD can
request to expand the contractual place of use of its entire service area to be supplied by water
stored in Lake Mendocino.
• The Potter Valley Project decommissioning is expected to reduce future water availability by limiting
trans -basin diversions from the Eel River into the Russian River system.
Moreover, climate -driven drought and lake level fluctuations have made RVCWD's current intake elevation
unreliable. The intake has been unable to draw water during extended dry periods, despite theoretical
access to storage.
With the modification of RRFC's boundary becoming a possibility and a more stable water rights framework
becoming available through a UWS&PA, lowering the intake elevation could represent a complementary
investment to facilitate year-round functionality and water supply reliability.
Protect No.8049.03
October 9, 02525LACO
Page 2 of 14 Native Owned I Community Partners I Trusted Advisors I a C 0 a 5 5 0 C I a 1 e 5. r_ 0 m
Opportunities and Constraints Report
Lake Mendocino Surface Wafer Intake Infrastructure Lowering
Redwood Valley County Water District
3.0 ALTERNATIVE OPTIONS
LACO has identified three potential alternatives for consideration. For ease of general alternative cost
analysis, the alternatives are listed from Feast cost -intensive to most cost -intensive based on best engineering
judgment.
3.1 ALTERNATIVE 1: Extend Intake Laterals
Alternative 1 consists of lowering either one or two of the highest elevation intake laterals and barrels
by extending them to access water at lower depths and preserving the remaining existing intake
infrastructure, This alternative would consider reusing the 42-inch intake barrels, depending on the
current condition of these barrels and if they meet current fish screen standards. Otherwise, new
intake barrels and screens would be needed. See Figure 1 for a typical screened lake intake barrel.
Figure 1: Typical Screened Water Intake Barrel (Filson Filter)
This alternative would require directly connecting at least one of the existing pumps or installing (a)
new pump(s) at the end of the extended 16-inch lateral(s) to draw water directly from the lake,
bypassing the gravity -fed wet well. A pump analysis is necessary to determine if the existing pumps
are adequate for the modified system or if supplementing the current intake system with a new
pump is needed. Refer to Figure 2 for a visual representation of how the current infrastructure would
be modified to accommodate this design alternative.
Vo F
rota 1 a
r - I
my ma a r:
nie CrMO l da:'I
appnr iC M� cn.S.i
�l
l
E s'O:Y. art nlur)U '/
� Ir•oa:S to Warr avJl '�.
SM:I 770 . ._._...
Figure 2: 1977 Existing Water Intake As-Builts with Notes on Improvements
Crr •.1
1r,<P rnla
Protect No. 049.03
2
October 9, 025LACO
Page 3 of 14 Native Owned I Community Partners I Trusted Advisors I a c 0 a 5 s o c i a t e;, r. o m
Opportunities and Constraints Report
Lake Mendocino Surface Water Intake Infrastructure Lowering
Redwood Valley County Water District
3.2 ALTERNATIVE 2: Floating Intake
For Alternative 2, involves the installation of a floating platform or pontoon raft anchored to the lakebed. The
platform supports intake pipes with self-cleaning wedge -wire screens or velocity caps. Screens are typically
fitted with self-cleaning systems to minimize fouling, but periodic inspections and manual cleaning may still
be required under certain lake conditions. Intake pipes are suspended just below the surface, tracking
reservoir level automatically as it rises and falls. Water flows through a flexible HDPE pipeline/hose from the
floating intake platform back to the existing pump house. This alternative may require a supplemental pump
or the relocation of an existing pump to the platform to deliver water to the existing pump house. The pipeline
would be designed with weight and slack to accommodate vertical and horizontal movement. The platform
and pipes would be anchored in place using cables, chains, or helical anchors and would be serviced via
boat or walkway. Optional solar panels or floating conduits are necessary to provide power for the
cleaning/monitoring equipment.See Figure 3 below for an example image of a floating lake water intake
system.
Figure 3: Example Floating Water Intake and Pump Station with Floating Bridge (HSB Marine)
3.3 ALTERNATIVE 3: Submerged Screened Manifold
This alternative would replace some or all of the existing 42-inch intake barrels with a large -diameter
submerged manifold. The manifold would be installed horizontally on the lake bottom at a lower
elevation, ballasted with concrete or anchors. For reference, the three existing intake barrels are
located at elevations of 710, 700, and 690 feet. The new manifold elevation would likely be close to
674 feet in elevation. The manifold would have multiple intake ports utilizing self-cleaning wedge -
wire screens or velocity caps to distribute withdrawal flow. Screens typically feature self-cleaning
systems to minimize fouling; however, periodic inspections and manual cleaning may still be
necessary, depending on the lake's conditions.
This alternative would connect the manifold to the three existing 16-inch pump laterals entering the
pump house with a water -tight connection. The siphoning mechanism of the current system would
likely have to be abandoned. This solution would collect water from deeper reservoir levels, ensuring
supply even at low lake levels; however, the amount of raw water that could be pumped may be
limited by the size of the existing infrastructure.
Project No. 2049.03
October 9, 025LACO
Page 4 of 14 Native Owned I Community Partners I Trusted Advisors 1 0 C 0 0 5 5 C C i O I e 5. C 0 M
Opportunities and Constraints Report
Lake Mendocino Surface Water Intake Infrastructure Lowering
Redwood Valley County Water District
This alternative would also require a direct connection to the 16-inch intake laterals or add/replace
with a new pump system connecting them to the 16-inch laterals. The existing pump configuration is
likely insufficient in providing the necessary suction for the needed water intake; this is because the
performance of the pump would be degraded by the additional length of pipe and additional static
pressure at the greater depth.
See Figure 4 below for an example of a Submerged Screened Intake System.
ex Scr to (such es 12 mm x so non p
5tvN �s � 15 r.•r oc
MLL
Flexible
Conawle Cast Iron
Bye Lnmi2
Connect existing 16" laterals to new
pipes. Move one of the existing
pumps from the pump house or get
a supplemental pump (likely 500
HP) to assist in pulling water from
deeper elevations, directly
connected to the laterals before
entering the pump house.
Figure 4: Example of a Submerged Screened Intake System (Civil Poriyaan)
4.0 OPPORTUNITIES
Each intake infrastructure alternative presents unique opportunities to improve the RVCWD's ability to reliably
access water from Lake Mendocino under variable lake levels. Opportunities are framed in terms of
operational resilience, cost efficiency, environmental performance, and long-term adaptability. They
highlight how each option could extend infrastructure life, enhance water quality protection, reduce
maintenance demands, or provide flexibility for future system modifications. By identifying these benefits, the
District can better evaluate which solution aligns with both present and future supply needs.
4.1 Physical
• Existing pump house infrastructure reduces constructability needs but may need to be
adapted for a new system.
• Three separate laterals provide flexibility in phasing or partial modification during construction.
• Options such as submerged manifolds or rigid extensions can be tailored to site bothymetry
and hydraulic needs.
• Upgrades provide opportunities to install modern intake screens to meet state and federal fish
protection standards.
4.2 Operational
• Maintain a reliable agricultural supply during extreme drought.
• Provide emergency backup for domestic service when intertie capacity is constrained
• Reduce dependency on surplus -only purchasing arrangements.
• Improve capacity for frost protection water withdrawals in early spring
• Access to previously unavailable water supply.
Protect No. 20d9.03
L AC
October 9,025
Page 5 of 14 Native Owned I Community Partners I Trusted Advisors I a c o a 5 s o c i a t e I. c o m
Opportunities and Constraints Report
Lake Mendocino Surface Water Intake Infrastructure Lowering
Redwood Valley County Water District
• Resilience to future water supply access due to climate change and Potter Valley Project
decommissioning.
• Availability of durable, corrosion -resistant materials (e.g. HDPE, coated steel) can improve
lifespan and reduce maintenance.
4.3 Regulatory and Institutional
• Aligns with RVCWD's future service capacity expansion under the Ukiah Valley Water Authority
(UVWA).
• Supports broader SWRCB goals under the Safe and Affordable Funding for Equity and
Resilience (SAFER) Program,
• Strengthens the case for full contractual use under RRFC License 13898 following potential
annexation.
4.4 Alternative Specific Opportunities
Some alternatives include:
• Alternative 1: Extending Intake Laterals
o Lowest estimated initial capital cost
o Potentially preserves existing 42-inch water intake barrels or replaces them with new
modern fish screens, depending on current condition
o Can be staged in phases - lower one lateral at a time to reduce outage
o Shorter design & fabrication lead time compared to full replacement options
o Opportunity to add instrumentation at tie-in for monitoring
o Lower design and fabrication complexity
• Alternative 2: Floating Intake
o Adjustable to variable water levels
o Easy access for maintenance - screens can be serviced from the floating platform
o Easy to install from shore
o Minimal lakebed disturbance - fewer impacts to benthic habitat during installation
o Modular and potentially deployable faster than extensive lakebed work
o Can implement automated debris -cleaning systems
o Improved sampling & monitoring -sensors easily installed on the floating platform
• Alternative 3: Submerged Screened Manifold
o Lowest exposure to debris and fish
o Easier to protect intake with engineered scour protection and anchor design
o Consolidates maintenance into one location - easier to manage flows and fouling
control
o Can locate intake deeper to avoid low reservoir levels/improve water quality intake
o More flexible hydraulic control - integrated balancing valves, redundancy, and
instrumentation
o Flexible for future expansion or redundancy
o Better ability to integrate fish/juvenile protection screens at the manifold
o Can include remote -actuated valves & monitoring for operational flexibility
Project 8049.03 L A C
Octoberr 9, 9, 2025
Page 6 of 14 Native Owned I Community Partners I Trusted Advisors I a a 0 a S 5 0 a i a 1 e 5. C 0 M
Opportunities and Constraints Report
Lake Mendocino Surface Water Intake Infrastructure Lowering
Redwood Valley County Water District
5.0 CONSTRAINTS
While each intake infrastructure alternative offers potential benefits, they also come with technical, financial,
and operational constraints that must be carefully considered. Constraints include design and
constructability challenges, maintenance access in submerged or remote conditions, compatibility with
existing pumping systems, and potential permitting or environmental limitations. Identifying these limitations
ensures that decision -making accounts for long-term feasibility, cost impacts, and regulatory compliance,
helping the District weigh tradeoffs between immediate performance gains and future risks.
5.1 Physical
• Intake structural limits may require reinforcement or a separate anchoring system for pipe
extensions.
• Hydraulic analysis of the existing pump to make sure that the pump's performance can handle
lowering the intake elevation and avoid cavitation. A new pump may be required.
• Existing welded steel barrels may present welding and modification challenges in -water.
• Lower elevations are more prone to sediment accumulation, affecting intake performance
and increasing O&M costs
• Lake bottom slopes and access logistics may limit construction timing to low-water windows
or use of cofferdams/similar equipment
• Visual aesthetics might also be a factor in design constraints
5.2 Financial
• RVCWD is currently under cost pressure from aging infrastructure and a limited revenue base.
While funding from DWR's Small Community Drought Relief Program is covering the cost of this
opportunity and constraints analysis, additional funding would be needed for further analysis,
design, permitting, and implementation of intake infrastructure modification.
• Lifecycle costs should include sediment removal, inspection/maintenance access, and power
needs.
• As stated above, the three alternatives are listed from lowest to highest upfront capital costs:
o Alternative 1 - Extending Intake Laterals
o Alternative 2 - Floating Intake
o Alternative 3 - Submerged Screened Manifold
A detailed cost estimate would require further analysis and is not included in the scope of this opportunities
and constraints report.
5.3 Permitting/Environmental
• Project is likely to require clearance under the California Environmental Quality Act (CEQA) for
in -lake modifications.
• Fish screens - if the existing 42-inch intake barrels are to be reused, the design team should
confirm that they meet current fish screening requirements to prevent fish intake. If the existing
barrels don't meet these requirements, then they will need to be replaced.
• Potential permits needed and not limited to:
o USACE Section 404
o CDFW Lake and Streambed Alteration Agreement
Protect No. 049.03
2
October 9, 025LACO
Page 7 of 14 Native Owned I Community Partners I Trusted Advisors 10 c 0 a s s o c i a t e s. c o m
Opportunities and Constraints Report
Lake Mendocino Surface Wafer Intake Infrastructure Lowering
Redwood Valley County Water District
o RWQCB 401 Certification
o Army Corp of Engineers
5.4 Alternative Specific Constraints
• Alternative l: Extending Intake Laterals
o Longer 16-inch runs add headloss; will likely need pump improvements or additions
o High sediment buildup can partially bury inlets - scour protection may be needed.
o Marine operations dependency - cofferdam/crane/barge/diver availability and
weather windows
o Long-term maintenance is still required for barrels; re -use could increase lifecycle costs
if the condition is poor
Alternative 2: Floating Intake
o Pump operation improvements or additions are likely necessary
o Higher ongoing maintenance (biofouling, debris)
o Exposure to weather/boat traffic
o Higher lifecycle costs - replacement of mooring hardware and floats over time
o Insurance and liability for navigational hazards may increase operating costs
o Complex hydrodynamic & mooring engineering needed; increases design fees and
inspection
o Mooring and navigation permitting complexity - may conflict with recreation and
boating on the lake
o Security and vandalism risk - accessible structure requires theft/vandalism mitigation
• Alternative 3: Submerged Screened Manifold
o High upfront capital cost - custom manifold fabrication and large marine mobilization
o Pump system improvements or additions are likely necessary
o Large lakebed disturbance - anchoring, bed preparation, scour protection, complex
permitting
o Requires an accurate lakebed survey and a stable substrate
o More complex initial install with barge/divers
o Ongoing inspection challenges - although centralized, manifold is still underwater
and requires dive access or ROVs
o Higher permitting & stakeholder scrutiny
o Longer project schedule due to design, fabrication, environmental review, and
procurement
o Costly scour protection and long-term monitoring may be required
6.0 DATA GAPS
Before deciding on an alternative, the following unknowns should be considered and resolved to best
determine an alternative and confirm opportunities and constraints:
• Survey Data Evaluation - Bathymetric data was collected from the US Army Corps of Engineers and
needs further evaluation to determine the viability of each alternative, particularly alternatives 1 and
3.
• Existing Conditions Evaluation- the current structural condition of the existing 42-inch water intake
barrels, welded inlet assemblies, and connection details are essential if these barrels are to be
Protect r9, 20LAC O
October 025 25
Page 8 of 14 Native Owned I Community Partners I Trusted Advisors 1 0 C 0 a 5 5 0 C i a( e s. C 0 M
Opportunities and Constraints Report
Lake Mendocino Surface Water Intake Infrastructure Lowering
Redwood Valley County Water District
reused. Existing conditions of the 16-inch laterals and pumps are needed to know if replacement or
maintenance is required.
• Hydraulic analysis — A hydraulic pump analysis is necessary to verify that the existing pumps can
handle a new intake system without being replaced (current pump specs, net positive suction head
[NPSH], suction losses,. pump operating points). All alternatives will likely require a new pump
arrangement (whether using existing pumps or new) to allow for better suction capabilities. It is also
important to collect data on how the pumps are currently operating. Pump operations may occur
in simultaneous, dual, or individual modes depending on system demand and control settings. Pump
operation is triggered by sufficient water depth and may be continuous throughout the day or
limited to designated operational time intervals.
• Lake Foundation — While not as critical as the first three unknowns, a geotechnical evaluation will be
necessary to evaluate the foundation for any alternative, as each would require some form of
anchoring. Understanding the lakebed soil type early will prevent issues arising during construction
and planning.
7.0 FUNDING OPPORTUNITIES
While not the focus of this report, the following state and federal funding programs are potential options for
future project funding needs.
• California State Water Resources Control Board (SWRCB) Safe and Affordable Drinking Water
Program (SAFER)
• Federal Emergency Management Agency (FEMA) Hazard Mitigation Grant Program (HMGP)
• United States Department of Agriculture (USDA) Rural Development Water & Waste Disposal Grants
• United States Department of Housing and Urban Development (HUD) Community Development
Block Grant (CDBG) Program
• Department of Water Resources (DWR) Integrated Regional Water Management (IRWM) Program
• United States Economic Development Administration (EDA) Disaster Supplemental Program
8.0 ANALYSIS OF FINDINGS
The current intake system is unable to provide the water needed for RVCW D during critical dry -weather years.
To pull water from a deeper elevation, this would either require a supplemental pump system or a
repositioning of one or two of the existing pumps (this would be determined based on a hydraulic analysis)
to directly connect to the 16" laterals that extend outside of the pump house. Due to the current infrastructure
setup, a completely new intake infrastructure system will probably need to be constructed and would
provide an updated system utilizing current technology. This intake system may only come back with minimal
water intake benefit for the overall cost of the system. Further study would be required to determine feasibility.
Any of the listed alternatives will require a modification to the existing pump system to properly draw water
into the pump house. Answering the unknowns in Section 6.0, such as the evaluation of the collected
bathymetric data, hydraulic analysis of the existing pumps, and evaluating the current conditions of the
intake infrastructure, will allow for better alternative selection and design. This information will also be helpful
to bring to contractors for future detailed cost estimates.
Project No. 8049.03
October 9, 2025 LA
O
Page 9 of 14 Native Owned I Community Partners I Trusted Advisors t a c 0 0 s s o c i a r e s. c o m
Opportunities and Constraints Report
Lake Mendocino Surface Water Intake Infrastructure Lowering
Redwood Valley County Water District
9.0 RECOMMENDED NEXT STEPS
1. Perform a cost -benefit analysis: Analyze whether the amount of water being
delivered due to new infrastructure is worth the new cost investment.
2. Address Unknowns: If alternative feasibility is decided to be pursued, fill in data
gaps given in Section 6.0 in order to develop conceptual design plans and obtain
preliminary cost estimates from contractors.
3. Prepare Preliminary Engineering Design: Advance conceptual design and site
feasibility analysis for the best alternative.
4. Explore additional funding sources: Schedule a pre -application meeting with
SWRCD for SAFER and any other funding considered.
5. Prepare a Permitting Roadmap: Begin outreach to regulatory agencies to
determine timeline and documentation needs.
6. Perform a Lifecycle Analysis: Evaluate long-term O&M, sediment risks, and
redundancy benefits for each intake option.
Project No. 2049.03 L A ___
�_--� October 9, 025
Page 10 of 14 Native Owned I Community Partners I Trusted Advisors i a c a a s s o c i o r ee s. c o n,
Opportunities and Constraints Report
Lake Mendocino Surface Wafer Intake Infrastructure Lowering
Redwood Valley County Wafer District
10.0 REFERENCES
Floating Pump Station and Floating Bridge - HSB Marine. (n.d.). HSB Marine. Accessed on September 18,
2025. Available at: httr)s://www hsbmarine com/proiects/floating-pump-station-and-floating-bridge
Intake Screen - Filson Filter. (n.d.). Filson Filters. Accessed on September 18, 2025. Available at:
httips://www.filsonfilters.com/intake-screen/-
Intake Structures (Surface Water Sources) - Different Parts, Types, Intake Towers. (n.d.). Civil Poriyaan.
Accessed on September 18, 2025. Available at: https://civil.r)oriyoon.in/topic/intake-structures--
surface-water-sources--40175/
Mendocino LAFCo. 2016, February 1. Redwood Valley County Water District Sphere of Influence Update.
Mendocino LAFCo. Available at:
httos://www.mendolafco.org/filesl8f56c4d2d/Redwood+Valley+CW D+SOI+Update+Adopted+2-1-
15+w+Reso.pdf
Russian River Flood Control & Water Conservation Improvement District. 2025, June 18. Annexation Plan for
Services. Russian River Flood Control & Water Conservation Improvement District. Available at:
https://www.rrfc.net/files/a6dc83a07/Proposed+Redwood+Valley+Annexation+DRAFT+Plan+for+Sere
ices+6-18-25. pdf
U.S. Census Bureau. 2023. American Community Survey 5-year estimates. Retrieved from Census Reporter
Profile page for Redwood Valley, CA. Available at:
htto://censusreporter.orgJprofiles/ 16000US0660214-redwood-valley-ca/
Protect No.049.03
2
Oclober9, 2025LACO
Page 11 of 14 Native Owned I Community Partners I Trusted Advisors I a c o a s s o c i al e s. c c m
Opportunities and Constraints Report
Lake Mendocino Surface Water Intake Infrastructure Lowering
Redwood Valley County Water District
APPENDIX 1
RVCWD Intake Infrastructure Location Map
Project No.049.03 2��
October 9, 025
Page 12 of 14 Native Owned I Community Partners I Trusted Advisors i o c o n s s o c i n t e s. c o m
v,
r.� 4 r
tx
S 4 a4 IN Mf �#
Note:; Laket
The information illustrated in th.. iy r °5 '
i .. �. , Mendocinowas derived from publicly -available
GIS data. LACO Associates cannot
quarantee the accuracv of the data.
Opportunities and Constraints Report
Lake Mendocino Surface Water Intake Infrastructure Lowering
Redwood Valley County Water District
APPENDIX 2
1977 RVCWD Inlet and Intake Plans
Project No.205 LAC O
October 4, 025
Page 13 of 14 Native Owned I Community Partners I Trusted Advisors l a c o o s s o c i a t e s. c o m
am *o ,� is
'a
tX -t,.
ui In
j
FUP9 Pa��Pw a a
0 1
IdA
T--j
Ilk
ILI'
-1p
An
191
co_,
N
TRIM
13.
IA
Irl
Q,
R
LL
ail° a,
�nJ
K
i-a�
g jam' fin"�w�
°¢'3RN�
1
�1=� wlUl
n vlw a
w
UT m
U 2
vat-$
i , I Y§,l'�\\ Fr $%��� •`, i
1 � ¢
`\\ /' j
��Aj Js .
T�F tC
r
JJJ�V��
JI
b
��
d
j
ctnn o
y..au
�—
a�
1. o
iu11N�x wm
3
N
U
L
O
-
0
a
w
pp¢
n z
ay
u
0
-eT.�rN
R¢
aa¢w
F
ill
1F
I
:u
. Ln
w
n_
8
a„
uj
Nay
Zp
Ra 4i
pN�
2:
�z 4 �I
m0R w
d� fl tip � �v os wa
:JL' mrm
in
mww,I-
i3S 15i
w
_ - O_
UJ
> -
T rt O J i�i
5D
o
�UmQ�wi
I�
Opportunities and Constraints Report
Lake Mendocino Surface Wafer Intake Infrastructure Lowering
Redwood Valley County Water District
APPENDIX 3
Overhead Existing Intake Infrastructure Map
Note: Elevation data from the LACO made Existing Infrastructure Map is relative and is based on the
spacing between intake barrels and elevations noted from the 1977 RVCWD Inlet and Intake Plans. The
2014 bathymetric data referenced in the CAD drawing shows that the actual elevations within the lake
may have changed between 1977 and 2014 due to sediment movement. Elevation values from the plan
set and the Existing Infrastructure Map are not the some.
Project No.049.03 2��
October 9, 025
Page 14 of 14 Native Owned I Community Partners I Trusted Advisors i a c o a s s o c i c t e s. r.. o m
\ 6
77
SCALE: 1" = 40'
LAKE MENDOCINO
C'�!_�_�VC.:::
RWD PUMP HOUSE Il3S
.,Ii U-qo�-
iF\, `EX. THREE (3) 42"INLET
31
PIPES
EX. THREE (3)16' INTAKE PIPES'
EX 24" FORCE MAIN
WATER LINE+
If
,.:
CONTINUES TO �+ r71
TREATMENT PLANT��tfi
OR HOLDING RESERVOIR
r:
nI AAI \/If lA)
� :BJOo
nn^l Il r Ill— II
JOB NO. 8049,03 RVCWD INTAKE LOWER
DATE AUGUST2025
DESIGNER LAC CALPELLA, CALIFORNIA LACO'
CHECKED BD DRAWN LAC SURVEYORS I ENGINEERS I PLANNERS I GRANT WRITERS
SHEET 1 of 1 EXISTING CONDITIONS
HIS DOCUMENT HAS BEEN PRODUCED FROM MATERIAL THAT WAS STORED ANDIOR TRANSMITTED ELECTRONICALLY AND MAY HAVE BEEN INADVERTENTLY ALTERED, R ELY ONLY ON FINAL HARDCOPY MATERIALS BEARING THE CONSULTANTS ORIGINAI BIONATNc c eui
TEAL.