12/13/2023 - Packet
WATER ADVISORY BOARD AGENDA – December 13, 2023
City of Tigard | 8777 SW Burnham St., Tigard, OR 97223 | 503-718-2688 | www.tigard-or.gov | Page 1 of 2
City of Tigard Water Advisory Board Agenda
SERVING TIGARD WATER SERVICE AREA
MEETING DATE: Wednesday, December 13, 2023, 5:30 p.m.
MEETING LOCATION: 10 mil Conference Room - PW
Public Dial-in Number for listen-only phone bridge (971) 256-0577
When prompted enter Conference ID 13125
1. Call to Order, Roll Call, and Introductions
2. Approval of Minutes – October 11, 2023
Action: Motion to approve the October 11, 2023, minutes.
3. Public Comments
Call for comments from the public.
4. Water Supply Update – Sammy Rico
5. Utility Billing Issues – Eric Kang
6. Non-Agenda Items
Call for non-agenda items from the board.
7. Next Meeting
February 14, 2024
Location: 10 mil PW
Time: 5:30 pm
8. Adjournment
Action: Motion for adjournment.
WATER ADVISORY BOARD AGENDA – December 13, 2023
City of Tigard | 8777 SW Burnham St., Tigard, OR 97223 | 503-718-2688 | www.tigard-or.gov | Page 2 of 2
The City of Tigard tries to make all reasonable modifications to ensure that people with disabilities have an equal
opportunity to participate in all city meetings.
Upon request, the city will do its best to arrange for the following services/equipment:
Assistive listening devices.
Qualified sign language interpreters.
Qualified bilingual interpreters.
Because the city may need to hire outside service providers or arrange for specialized equipment, those requesting
services/equipment should do so as far in advance as possible, but no later than 3 city workdays prior to the meeting.
To make a request, call 503-718-2591 (voice) or 503-684-2772 (TDD - Telecommunications Devices for the Deaf).
Executive Session
The Water Advisory Board may go into Executive Session. If an Executive Session is called to order, the
appropriate ORS citation will be announced identifying the applicable statute. All discussions are confidential
and those present may disclose nothing from the Session. Representatives of the news media are allowed to
attend Executive Sessions, as provided by ORS 192.660(4), but must not disclose any information discussed.
No Executive Session may be held for the purpose of taking any final action or making any final decision.
Executive Sessions are closed to the public.
Water Advisory Board (WAB) Minutes
SERVING TIGARD WATER SERVICE AREA
Page 1 of 5
MEETING DATE: Wednesday, December 13, 2023, 5:30 p.m.
MEETING LOCATION: 10 mil – Public Works
Members Present:
Commissioner Marie Walkiewicz Representing the Water Advisory Board TWD
Councilor Jeanette Shaw Representing the City of Tigard
Commissioner Neha Neelwarne Representing the Water Advisory Board At-Large Member
Members Absent:
Commissioner Keith Jehnke Representing the City of Durham
City of Tigard Staff Present:
Brian Rager Public Works Director
Shauna Large WAB Coordinator/Recorder
Guests:
Eric Kang Finance Director
Ken Henschel
1.Call to Order, Roll Call, and Introductions
Commissioner Marie Walkiewicz called the meeting to order at 5:33 p.m.
2.Approval of Minutes – October 11, 2023
Due to a procedural error Brian Rager asked the WAB members to Amend the October 11,
2023, minutes to reflect Ken Henschel as a guest, not a commissioner at that meeting. The
board will vote on the October 11, 2023, amended minutes at the next meeting.
Commissioners Henschel moved to approve the October 11, 2023, minutes with one
amendment, Commissioner Neelwarne seconded the motion, Commissioners Walkiewicz
approved as amended. The motion passed unanimously, with Commissioners Henschel,
Walkiewicz, and Neelwarne, voting yes.
Amended
Water Advisory Board (WAB) Minutes
SERVING TIGARD WATER SERVICE AREA
Page 2 of 5
3. Public Comments
There were no Public Comments.
4. Water Supply Update – Brian Rager
Brian briefly went over the October updates noting nothing unusual to report. November
water usage was above historic average. Jeanette asked if there were any known issues with
black residue in the toilet tanks in the last three or four weeks. She talked to Clean Water
Services they stated they bumped up the chlorine. Brian mentioned the only time we inject
chlorine is when they are pulling out of ASR wells, we treat it with a little bit of chlorine
because it’s been down in the aquifer for a while.
5. Utility Billing Issues – Eric Kang
Eric stated that he wanted to address the general questions regarding the cycle of utility
billing. There is not an exact 30 days between reads, sometimes it can be plus or minus two
or three days. We have done some research in the past and there has been some discussion
regarding Tyler being the fix, the Tyler system is not really the answer that we are hoping for
as far as to the billing issues. Really, where I see an opportunity to heighten our timing of
reads really lies with our AMI project. We our running a pilot currently, we’ve selected a
group to do a small pilot on. Brian clarified that AMI stands for Advanced Metering
Infrastructure. Eric stated currently billing reads are done manually by three employees
during regular business hours Monday through Thursday. Currently the new meters are
captured by the drivers’ equipment in their vehicles, it’s a remote capture. With the pilot the
outcomes of that project will help us decide on which technology we go forward with in
terms of AMI. There are two different types, the cellular or the automatic infrastructure in
the city, which is vastly more expensive than the other alternative, but it allows for remote
capture without any vehicles or anyone going into the field. The other one is similar to what
we have today at River Terrace, we would still have some sort of readers and vehicles that
would have to go out in the field. The more expensive option would give us more data
points throughout the month, and we should be able to track usage. Brian mentioned we
would get updates every 30 minutes. Brian stated our thinking down the road would be if the
city converted to the AMI system, we would have people literally monitoring in the office,
we would be able to monitor what is going on at each residence. Say you might get a call
letting you know we are noticing above average consumption at your residence you might
Water Advisory Board (WAB) Minutes
SERVING TIGARD WATER SERVICE AREA
Page 3 of 5
want to check to see what is going on. Marie said there would be some sort of threshold
then. Brian stated we also might get a call from a customer asking why their bill was so high,
we would be able to go into the data and say on this date about 2:00 in the morning… do
you have a swimming pool or hot tub that may be the issue, etc. Neha asked what do our
neighboring cities do. Eric replied, I’ve had the opportunity to talk to our neighboring cities
that are on AMI infrastructures. I believe Hillsboro said 90-95 percent of their meters are on
AMI. They are also using the Tyler system that we will be converting our utility billing
system to. Their perspective is they have fixed this problem through AMI. They have the
cell structure, the more expensive option. They still have some gaps with commercial
accounts due to being on a manual infrastructure. Wilsonville is on Tyler but not sure if they
are on the AMI system yet. Brian mentioned Lake Oswego is converting too. In new
subdivisions we are installing new radio read meters. Marie asked if we have points in the
system itself that are automated to read leaks in the public system or problems in the public
system. Brian stated there is a separate little program we’ve got going, there is technology
that we’ve implemented to be able to do some leak detection and we’ve already found some.
We have a pretty tight system but recently we were able to zero in on one, I think pretty
close to 99W. They were able to isolate and go fix that one. Some of these devices are able
to attach at hydrants and then read the technology. Eric noted that from the pilot we learned
that the meters can be interchanged between the cell or the radio, the small antenna piece
can be upgraded later. Marie asked in the meantime is there anything that can be done to
help mitigate the impact for the long billing cycles. Eric stated we map out our routes to get
as close to 30 days as possible but as long as we have physical individuals going out there to
get meter readings it can become very challenging to get an exact perfect 30-day reading.
After talking to other agent jurisdictions that have made the switch to Tyler my suspicion is
there isn’t a magical fix from the Tyler system that would allow us to calculate or estimate
that. Really, I think the answer to solve this problem is with the AMI system. The issue
seems to be coverage, adding a floater to cover these times when we don’t have full coverage
could help. PW has helped in the past with meter reading. Ken stated his particular situation
meant he got bumped into a higher tier, which is the penalty phase where you get an extra
rate increase but the next month you might be down at three because of a shorter cycle but
you don’t get it back. Eric stated, he definitely understands Ken’s concern. The difficulty
with that is it is hard to pinpoint when the consumption occurred. The challenging piece that
you see even if we could use a floater is when some individuals get sick and if there is snow
or weather events. Neha asked what’s the timeline of the pilot project. Brian stated the pilot
project has started and should last for about six months. It will take approximately six
Water Advisory Board (WAB) Minutes
SERVING TIGARD WATER SERVICE AREA
Page 4 of 5
months to a year for our staff to get training and learn what we can do with that kind of
metering infrastructure it will include Eric’s team and utility billing. Then the proposal would
carry forward to the Council level, cost would be a few million dollars. The last time we did
the estimate it was six million to do the whole city but that was a couple of years ago. Brian
stated the pilot we are implementing will require us to just go out and replace the meters, the
customer won’t to be affected. We replace meters all the time if we find a problem. We are
seeing that it will definitely be inside of our six-year CIP timeframe. Eric asked if there were
any additional billing questions. Ken stated he wanted to know if there was a charity that
could be donated to, say you want to round up on your bill and that balance would go into a
charity fund to help other City of Tigard citizens who need help with their bill. Eric stated
that is certainly something we could ask for, but he wouldn’t recommend trying to do that
with our current billing system as we are still building our timeline for the transition to Tyler.
Jeanette asked what the timing is for utility billings to be on total Tyler. Eric stated they are
working on the scope now the last update he received was sometime around springtime of
next year, but it has since been revised, the conversation now is, we are looking at June. The
key concerns, we want to make sure we get the correct communication out to all residents
for the entire community. There will be a marketing campaign, so we need some extra time
to make sure that campaign is done successfully. Marie mentioned it would be helpful to
bring what the communication plan is for getting the word out to the WAB. Eric stated he
could take care of that.
6. Non-Agenda Items
Ken stated he sent an email regarding our next WAB meeting. Brian stated we can move the
meeting to Thursday the 15th. Shauna will send a new calendar invite with the meeting
change. Eric stated he will have more information in February and could attend the February
15th WAB meeting. He could bring some marketing material and discuss the Tyler roll out.
Marie asked about earthquake resilience planning. The Board Chair for the Water District
was going to contact Brian regarding Emergency Preparedness for our Water District
regarding insurance rates which are impacted by different factors. What do we do as a Water
Board if there is a water emergency. We have certain responsibilities to the district at least to
get the word out. Brian mentioned we could have Mike Lueck come to a future meeting and
discuss our emergency response plan with the WAB. Ken asked about an update regarding
the fire hydrants. Brian stated we are down on staff which we are trying to fill. Because of
that we are behind on doing that. Ken also asked about having them painted. Brian said he
Water Advisory Board (WAB) Minutes
SERVING TIGARD WATER SERVICE AREA
Page 5 of 5
could talk to one of the water supervisors. Marie asked if there was anything else. We have
identified that the next WAB meeting will be on February 15th. Marie asked if we have a
motion to adjourn.
7.Next Meeting
February 15, 2024
Location: 10 mil – PW
Time: 5:30 pm
8.Adjournment
At 6:23 p.m., the meeting adjourned by unanimous vote of the Commissioners present, with
commissioners Maire Walkiewicz, Jeanette Shaw, and Neha Neelwarne voting yes.
Commissioner Shaw moved to adjourn the meeting, and Commissioner Henschel seconded
the motion. The meeting adjourned by unanimous vote of the commissioners present, with
Commissioners Walkiewicz, Shaw, Neelwarne and Henschel voting yes.
____________________________ ____________________________
Keith Jehnke, WAB Chair Shauna Large, WAB Coordinator/Recorder
Date: _______________________ Date: ________________________ 4/24/2024
Water Advisory Board Water Supply Update
October 2023 Update
Tigard Usage
Current
(Oct 23)
Prior Yr
(Oct 22)
Avg Daily Use (MGD)4.93 6.13
Avg Temp 66°72°
Peak Use (MGD)5.55 7.76
Peak Temp 86°88°
Tigard Storage
Stored Water (ASR)324.1 320.5
Days of Supply 179.4 175.3
4.93
Average
4.74
0
2
4
6
8
10
Average Daily Demand (ADD)
0
20
40
60
80
100
120
0
2
4
6
8
10
12
14
TemperatureMillion Gallons Per Day (MGD)Tigard Usage and Air Temperature Over Time
Peak Temperature Average Temperature Average Daily Use (MGD)Peak Use (MGD)
October Usage
Average daily water use for the month of October was 4.93
million gallons per day (mgd). Peak daily use was 5.55 mgd.
Last year, average daily water use was 6.13 mgd for the same
time period, with a peak day of 7.76 mgd. The average daily
use for October was above the historic average of 4.74 mgd,
but the peak daily was below the historic average of 5.78
mgd.
5.55
Peak 5.78
0
2
4
6
8
10
Peak Daily Demand (PDD)
The chart above shows Tigard's average daily water use for the current fiscal year (YTD), as well as two years
prior. This usage is compared to the average and peak air temperatures during that time, displayed as the colored
area. This shows the seasonality of water consumption and the close relationship with temperature.
Water Advisory Board Water Supply Update
Stored Water (ASR)
Lake Oswego-Tigard Water Treatment Plant & Bonita Pump Station
Data Metrics
Current
(Oct 23)
Prior Yr
(Oct 22)
Chlorine Residual 1.08 1.09
Alkalinity 30.61 31.76
pH 7.84 7.81
Temperature 13.59 14.45
0
50
100
150
200
250
0
50
100
150
200
250
300
350
400
Jan
2021
Mar
2021
May
2021
Jul
2021
Sep
2021
Nov
2021
Jan
2022
Mar
2022
May
2022
Jul
2022
Sep
2022
Nov
2022
Jan
2023
Mar
2023
May
2023
Jul
2023
Sep
2023 Days of SupplyStored Water (MG)Stored Water (ASR)
ASR #1 ASR #2 Days of Supply
The chart above shows Tigard's current stored water (ASR levels) as well as 12 months of prior histoy.
The storage levels of ASR #1 and ASR #2 are stacked to show total combined stored water. The days
of supply, based on the amount of stored water, is displayed on the right axis and as the gray line.
0
0.5
1
1.5
2
2.5
3
3.5
4
Chlorine Residual (0.2-4.0ppm boundary)Chlorine Residual: 1.08 ppm
Chlorine is a disinfectant used to
protect the public from virus,
bacteria, and other micro-
organisms. The maximum level
for chlorine in drinking water is 4
ppm and the minimum level
required is 0.2 ppm (indicated by
the yellow shaded area in the
chart above). The average
chlorine residual from July 2020
to current is 1.10 ppm.
Definitions:
LOTWTP:Lake Oswego-Tigard Water Treatment Plant
mg/L:millograms per liter, also expressed as ppm
ppm: parts per million, a measurement of the mass of a
chemical per unit volume of water.
cfs: cubic feet per second, measurement of rate of flow
Water Advisory Board Water Supply Update
0
10
20
30
40
50
60
70 Finished Water Alkalinity (ppm)
4
5
6
7
8
9
10
pH (Raw & Finished)
Clackamas River pH Bonita pH Neutral
0
5
10
15
20
25
Water Temperature C (Raw & Finished)
Clackamas River LOTWTP
Alkalinity: 30.61 ppm
Alkalinity is water's capacity
(buffering) to resist acidic
changes in pH or to neutralize
acid. A normal range for
alkalinity in finished drinking
water is 20-200 mg/L (indicated
by the blue shaded area). The
EPA Secondary Drinking Water
Regulations limit alkalinity only
in terms of total dissolved solids
not to exceed 500ppm.
pH: 7.84
pH is a numerical measure of
the acidity or alkalinity (base) of
a solution, measured on a scale
of 0 to 14. Neutral on the scale
is 7 (indicatd by the gray line in
the chart), below 7 is acidic and
above 7 is alkaline. For drinking
water, slighly base chemistry
(alkaline) provides anti-
corrosion properties to protect
water supply plumbing and
reduces the risks associated
with lead solder and copper
plumbing.
Water Temperature:13.59C
(56F)
While water temperature can
have a major influence on
biological activity and organic
life in bodies of water, there is
not an EPA standard for the
temperature of finished
drinking water.
As you can see in the chart
above, the temperature of the
finished drinking water
fluctuates in tandem with the
temperature of the source water
(Clackamas River).
Water Advisory Board Water Supply Update
USGS Clackamas River Water Data
The following charts contain U.S. Geological Survey data collected from the Clackamas River. The charts on this
page show a comparison of the current month of data to that same month in the prior years, as well as an average
over those years. On the second page, those charts show the historical trends of each metric from January 2014
to current. Turbidity, a metric not yet defined in this report, is the relative clarity of a liquid. It is an optical
characteristic, measuring the amount of light scattered by material in the water, measured in nephelometric
turbidity units (NTU).
12.5
Average
11.7
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
Temperature for Current Month
1135.7
Average
1843.8
0
1,000
2,000
3,000
4,000
5,000
2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
Flow for Current Month
7.9Average
7.7
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
8.0
2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
pH for Current Month
1.6
Average
2.1
0.0
1.0
2.0
3.0
4.0
5.0
6.0
2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
Turbidity for Current Month
Water Advisory Board Water Supply Update
0
2
4
6
8
10
12
14
16
18
20
Jan
2014
Jul
2014
Jan
2015
Jul
2015
Jan
2016
Jul
2016
Jan
2017
Jul
2017
Jan
2018
Jul
2018
Jan
2019
Jul
2019
Jan
2020
Jul
2020
Jan
2021
Jul
2021
Jan
2022
Jul
2022
Jan
2023
Jul
2023
Turbidity of Clackamas River (NTUs)
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
Jan
2014
Jul
2014
Jan
2015
Jul
2015
Jan
2016
Jul
2016
Jan
2017
Jul
2017
Jan
2018
Jul
2018
Jan
2019
Jul
2019
Jan
2020
Jul
2020
Jan
2021
Jul
2021
Jan
2022
Jul
2022
Jan
2023
Jul
2023
pH of Clackamas River
0
2,000
4,000
6,000
8,000
10,000
12,000
Jan
2014
Jul
2014
Jan
2015
Jul
2015
Jan
2016
Jul
2016
Jan
2017
Jul
2017
Jan
2018
Jul
2018
Jan
2019
Jul
2019
Jan
2020
Jul
2020
Jan
2021
Jul
2021
Jan
2022
Jul
2022
Jan
2023
Jul
2023
Discharge (Flow) of Clackamas River (cfs)
0
5
10
15
20
25
Jan
2014
Jul
2014
Jan
2015
Jul
2015
Jan
2016
Jul
2016
Jan
2017
Jul
2017
Jan
2018
Jul
2018
Jan
2019
Jul
2019
Jan
2020
Jul
2020
Jan
2021
Jul
2021
Jan
2022
Jul
2022
Jan
2023
Jul
2023
Temperature of Clackamas River (c)
Water Advisory Board Water Supply Update
November 2023 Update
Tigard Usage
Current
(Nov 23)
Prior Yr
(Nov 22)
Avg Daily Use (MGD)4.49 4.55
Avg Temp 55°50°
Peak Use (MGD)4.95 5.03
Peak Temp 59°60°
Tigard Storage
Stored Water (ASR)324.1 318.5
Days of Supply 179.4 174.3
4.49
Average
4.17
0
2
4
6
8
10
Average Daily Demand (ADD)
0
20
40
60
80
100
120
0
2
4
6
8
10
12
14
TemperatureMillion Gallons Per Day (MGD)Tigard Usage and Air Temperature Over Time
Peak Temperature Average Temperature Average Daily Use (MGD)Peak Use (MGD)
November Usage
Average daily water use for the month of November was
4.49 million gallons per day (mgd). Peak daily use was 4.95
mgd. Last year, average daily water use was 4.55 mgd for the
same time period, with a peak day of 5.03 mgd. The average
daily and peak use for November were above the historic
averages of 4.17 mgd and 4.63 mgd respectively.
4.95Peak4.63
0
2
4
6
8
10
Peak Daily Demand (PDD)
The chart above shows Tigard's average daily water use for the current fiscal year (YTD), as well as two years
prior. This usage is compared to the average and peak air temperatures during that time, displayed as the colored
area. This shows the seasonality of water consumption and the close relationship with temperature.
Water Advisory Board Water Supply Update
Stored Water (ASR)
Lake Oswego-Tigard Water Treatment Plant & Bonita Pump Station
Data Metrics
Current
(Nov 23)
Prior Yr
(Nov 22)
Chlorine Residual 1.10 1.10
Alkalinity 24.28 24.15
pH 7.75 7.81
Temperature 9.32 7.62
0
50
100
150
200
250
0
50
100
150
200
250
300
350
400
Jan
2021
Mar
2021
May
2021
Jul
2021
Sep
2021
Nov
2021
Jan
2022
Mar
2022
May
2022
Jul
2022
Sep
2022
Nov
2022
Jan
2023
Mar
2023
May
2023
Jul
2023
Sep
2023
Nov
2023 Days of SupplyStored Water (MG)Stored Water (ASR)
ASR #1 ASR #2 Days of Supply
The chart above shows Tigard's current stored water (ASR levels) as well as 12 months of prior histoy.
The storage levels of ASR #1 and ASR #2 are stacked to show total combined stored water. The days
of supply, based on the amount of stored water, is displayed on the right axis and as the gray line.
0
0.5
1
1.5
2
2.5
3
3.5
4
Chlorine Residual (0.2-4.0ppm boundary)Chlorine Residual: 1.10 ppm
Chlorine is a disinfectant used to
protect the public from virus,
bacteria, and other micro-
organisms. The maximum level
for chlorine in drinking water is 4
ppm and the minimum level
required is 0.2 ppm (indicated by
the yellow shaded area in the
chart above). The average
chlorine residual from July 2020
to current is 1.10 ppm.
Definitions:
LOTWTP:Lake Oswego-Tigard Water Treatment Plant
mg/L:millograms per liter, also expressed as ppm
ppm: parts per million, a measurement of the mass of a
chemical per unit volume of water.
cfs: cubic feet per second, measurement of rate of flow
Water Advisory Board Water Supply Update
0
10
20
30
40
50
60
70 Finished Water Alkalinity (ppm)
4
5
6
7
8
9
10
pH (Raw & Finished)
Clackamas River pH Bonita pH Neutral
0
5
10
15
20
25
Water Temperature C (Raw & Finished)
Clackamas River LOTWTP
Alkalinity: 24.28 ppm
Alkalinity is water's capacity
(buffering) to resist acidic
changes in pH or to neutralize
acid. A normal range for
alkalinity in finished drinking
water is 20-200 mg/L (indicated
by the blue shaded area). The
EPA Secondary Drinking Water
Regulations limit alkalinity only
in terms of total dissolved solids
not to exceed 500ppm.
pH: 7.75
pH is a numerical measure of
the acidity or alkalinity (base) of
a solution, measured on a scale
of 0 to 14. Neutral on the scale
is 7 (indicatd by the gray line in
the chart), below 7 is acidic and
above 7 is alkaline. For drinking
water, slighly base chemistry
(alkaline) provides anti-
corrosion properties to protect
water supply plumbing and
reduces the risks associated
with lead solder and copper
plumbing.
Water Temperature:9.32C
(49F)
While water temperature can
have a major influence on
biological activity and organic
life in bodies of water, there is
not an EPA standard for the
temperature of finished
drinking water.
As you can see in the chart
above, the temperature of the
finished drinking water
fluctuates in tandem with the
temperature of the source water
(Clackamas River).
Water Advisory Board Water Supply Update
USGS Clackamas River Water Data
The following charts contain U.S. Geological Survey data collected from the Clackamas River. The charts on this
page show a comparison of the current month of data to that same month in the prior years, as well as an average
over those years. On the second page, those charts show the historical trends of each metric from January 2014
to current. Turbidity, a metric not yet defined in this report, is the relative clarity of a liquid. It is an optical
characteristic, measuring the amount of light scattered by material in the water, measured in nephelometric
turbidity units (NTU).
8.0
Average
7.8
0.0
2.0
4.0
6.0
8.0
10.0
2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
Temperature for Current Month
2466.8
Average
3523.7
0
1,000
2,000
3,000
4,000
5,000
6,000
2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
Flow for Current Month
7.5
Average
7.5
6.8
7.0
7.2
7.4
7.6
7.8
8.0
2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
pH for Current Month
2.9
Average
3.6
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
Turbidity for Current Month
Water Advisory Board Water Supply Update
0
2
4
6
8
10
12
14
16
18
20
Jan
2014
Jul
2014
Jan
2015
Jul
2015
Jan
2016
Jul
2016
Jan
2017
Jul
2017
Jan
2018
Jul
2018
Jan
2019
Jul
2019
Jan
2020
Jul
2020
Jan
2021
Jul
2021
Jan
2022
Jul
2022
Jan
2023
Jul
2023
Turbidity of Clackamas River (NTUs)
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
Jan
2014
Jul
2014
Jan
2015
Jul
2015
Jan
2016
Jul
2016
Jan
2017
Jul
2017
Jan
2018
Jul
2018
Jan
2019
Jul
2019
Jan
2020
Jul
2020
Jan
2021
Jul
2021
Jan
2022
Jul
2022
Jan
2023
Jul
2023
pH of Clackamas River
0
2,000
4,000
6,000
8,000
10,000
12,000
Jan
2014
Jul
2014
Jan
2015
Jul
2015
Jan
2016
Jul
2016
Jan
2017
Jul
2017
Jan
2018
Jul
2018
Jan
2019
Jul
2019
Jan
2020
Jul
2020
Jan
2021
Jul
2021
Jan
2022
Jul
2022
Jan
2023
Jul
2023
Discharge (Flow) of Clackamas River (cfs)
0
5
10
15
20
25
Jan
2014
Jul
2014
Jan
2015
Jul
2015
Jan
2016
Jul
2016
Jan
2017
Jul
2017
Jan
2018
Jul
2018
Jan
2019
Jul
2019
Jan
2020
Jul
2020
Jan
2021
Jul
2021
Jan
2022
Jul
2022
Jan
2023
Jul
2023
Temperature of Clackamas River (c)