20030147 Ver 2_2021 Water Quality Compliance Report_20220401

WATER STRATEGY AND HYDRO LICENSING

Duke Energy Corporation
Regulated and Renewable Energy
526 South Church Street / EC12Q
Charlotte, NC 28202

April 1, 2022

The Honorable Kimberly D. Bose, Secretary
Federal Energy Regulatory Commission
888 First Street N.E.
Washington, DC 20426

Re: Duke Energy Progress, LLC
Yadkin-Pee Dee Hydroelectric Project (FERC No. 2206)
2021 Water Quality Compliance Report

Dear Secretary Bose:

Duke Energy Progress, LLC (Duke Energy) was issued a New License by the Federal Energy Regulatory
Commission (FERC) for the Yadkin-Pee Dee Hydroelectric Project (Project, FERC No. 2206) on April 1,
2015. Enclosed is the 2021 Water Quality Compliance Report required annually for the Project by Article
402 of the New License.

Please contact John Crutchfield at [phone] ([e-mail]) if you have
questions or require additional information.

Sincerely,

Jeffrey G. Lineberger, P.E.
Director, Water Strategy and Hydro Licensing
Duke Energy

Enclosure

cc w/enclosure: Paul Wojoski, NCDEQ
Chonticha McDaniel, NCDEQ
Fred Tarver, NCDEQ
Jason Brown
John Crutchfield
Lynne Dunn
Justin Dycus
David Scott
Phil Fragapane

Yadkin-Pee Dee Hydroelectric Project

FERC Project No. 2206

2021 Water Quality Compliance Report

Duke Energy Progress, LLC

April 2022

1

Yadkin-Pee Dee Hydroelectric Project
FERC Project No. 2206

2021 Water Quality Compliance Report

1.0 Background
On April 1, 2015, the Federal Energy Regulatory Commission (FERC; Commission) issued Duke Energy
Progress, LLC (Duke Energy) a New License (License) for the Yadkin-Pee Dee Hydroelectric Project
(Project, FERC Project No. 2206). License Article 402 approved Duke Energy’s Dissolved Oxygen
Compliance Implementation Plan (Compliance Plan), filed with FERC on January 20, 2012, to meet the
water quality monitoring requirements outlined in Sections III.A.2 and III.B.2 of the 401 Water Quality
Certification (WQC) issued by the North Carolina Division of Water Resources (NC DWR).

This report fulfills the annual water quality compliance reporting requirement outlined in the WQC for
monitoring conducted in 2021. The data reported here conform to requirements outlined in the
Compliance Plan, Section 8.0 – Compliance Monitoring and Reporting (Progress Energy Carolinas, Inc.
2012).

2.0 Compliance Monitoring
As required in the Compliance Plan, the following parameters were measured at 15-minute intervals from
May 1 through November 30, 2021, in the tailwaters of the Tillery and Blewett Falls Developments:

• Dissolved oxygen (DO), mg/L
• Water temperature, oC
• Gage height (river stage), feet

Measurements were carried out by the United States Geological Survey (USGS) as required by Section
7.0 of the Compliance Plan, at the following locations:

Development USGS Station Number USGS Station Description
Tillery 0212378405 Pee Dee River at Highway 731 below Lake
Tillery near Norwood, North Carolina
Blewett Falls 0212880025 Pee Dee River below Powerhouse Dam near Pee
Dee, North Carolina
2

3.0 Compliance Reporting
Results reported here are based on approved data provided to Duke Energy by USGS after their final
quality assurance review, as specified in Section 8.0 of the Compliance Plan. This report and the
associated Excel file provide the following results for data collected May 1 through November 30, 2021:

• DO and water temperature recorded at 15-minute intervals
• Daily minimum, average, and maximum DO values
• Daily minimum, average, and maximum water temperature values

Calculations for percent DO saturation (% saturation) along with DO, water temperature, and gage height
(river stage) data measured at 15-minute intervals at the USGS monitoring locations described above are
reported in the Excel file associated with this report: Yadkin-Pee Dee Project Water Quality Data
2021.xlsx.

Daily minimum, average, and maximum DO concentration and water temperature data are reported in
Table 1 for the Tillery Development and in Table 2 for the Blewett Falls Development. Daily minimum
and average DO values are graphed for the Tillery Development in Figure 1 and for the Blewett Falls
Development in Figure 2. Daily minimum, average, and maximum water temperature values are graphed
in Figure 3 for the Tillery Development and Figure 4 for the Blewett Falls Development.

Data Recovery
Water temperature, DO and gage height were measured at 15-minute intervals, generally resulting in a
total of 96 observations per day. Overall recovery rates for approved continuous DO monitoring data
collected during the 2021 period were 99.3% for both the USGS station at Blewett Falls Development
(USGS No. 0212880025) and USGS station at Tillery Development (USGS No. 0212378405).

For both water quality stations, routine calibration and replacements of the monitoring instrumentation by
USGS field staff typically resulted in no more than one or two missing observations per event. However,
in the other instances of missing observations, the sonde communications with the radio transmitter was
briefly interrupted when transmitting data resulting in a null value recorded (i.e., missing value) (Tables 1
and 2).

The USGS installed new In-Situ Aqua Troll 600 Multiparameter sondes equipped with Aqua Troll
0063450 RDO sensors for compliance water quality monitoring in April 2021. This equipment replaced
3

the previous sondes deployed at the monitoring sites, as specified in Section 7.2 of the Compliance Plan
(i.e., YSI 600 OMS V2 sondes equipped with YSI 6150+ ROX Optical DO Probes).

Table 3 documents the dates during the monitoring period when the USGS performed routine calibration
and maintenance of the field instrumentation.

3.1 Compliance with Water Quality Standards
The WQC issued by NC DWR (Appendix A of the New License) specifies that DO concentrations in
Project tailwaters will comply with the applicable North Carolina water quality standards which are as
follows (NCDENR-DWQ 2007):

Standard for instantaneous DO concentration, minimum: 4.0 mg/L
Standard for daily (24-hour) average DO concentration, minimum: 5.0 mg/L

During the spring of 2021, DO compliance at Blewett Falls Hydro Station via draft tube venting was re-
initiated with the restoration and return to service of Units 1-5 during October and December 2020 and
Unit 6 during April 2021.1 All six generating units for the Blewett Falls Hydro Station were available in
2021 to provide draft tube aeration to meet DO compliance requirements.

Daily Average DO Standard
During the monitoring period (May 1 - November 30, 2021), the daily average DO concentrations in the
Tillery Development and Blewett Falls Development tailwaters remained above the state standard of
5.0 mg/L (Figures 1 and 2).

Instantaneous DO Standard
During 2021, the instantaneous DO concentration (4.0 mg/L) in the tailwaters of the Tillery
Development was met for the majority of the compliance monitoring period except for one brief
15-minute period on August 3 (3.8 mg/L at 07:00 hours) (Figure 1). Duke Energy verbally
notified the NC DWR of the deviation on August 3 and filed a letter with FERC and the NC

1Letter to Secretary Bose, dated April 7, 2021, RE: Duke Energy Progress, LLC, Yadkin -Pee Dee River
Hydroelectric Project No. 2206, Update on Blewett Falls Development Restoration Schedule (Unit 6).

4

DWR on the same date.2 In the August 3 letter, Duke Energy reported two 15 minute deviations
of 3.5 mg/L and 3.9 mg/L at 0700 and 0715 hours, respectively. However, the USGS cleaned and
calibrated the sonde on August 4 and the corrected data resulted in the one DO value below the
instantaneous level (Table 3).

Duke Energy indicated this deviation was a result of aquatic plant respiration in the tailrace during
early morning hours with cloudy overcast conditions. The power plant was not operating at that time
to provide aeration via the liquid oxygen injection system with only tailrace flow provided by the
dam crest gate to meet the minimum flow requirements. Upon recognizing the DO deviation, plant
operators took quick action to provide aeration via start-up of Unit 4. No adverse environmental
impacts were observed during the brief 15-minute DO excursion.

Two mitigative actions were implemented as result of this deviation: 1) the crest gate lowered from 800
cfs to 500 cfs at 0700 hours instead of 0600 hours to allow for additional sunlight to increase aquatic plant
photosynthesis and subsequent DO concentrations in the power plant tailwaters and 2) the upper DO low
alarm limit moved from 4.9 mg/L to 5.2 mg/L to allow for additional time to make power plant
operational changes to enhance decreasing DO concentrations. A lower DO low alarm remains in place at
4.5 mg/L. Additionally, it was discussed with the plant operators to be aware of cloudy weather
conditions, particularly during early morning hours, that might affect DO concentrations from aquatic
plant respiration.

The FERC responded to Duke Energy on January 10, 2022, regarding the deviation noting the conditions
surrounding the event and the mitigative efforts.3 Furthermore, FERC stated the deviation was not
considered a violation but would be made a part of the compliance history of the project.

At the Blewett Falls Development, the instantaneous DO standard was met for the compliance monitoring
period of May 1-November 30 (Figure 2).

2Letter to Secretary Bose, dated August 3, 2021, RE: Duke Energy Progress, LLC, Yadkin-Pee Dee River
Hydroelectric Project No. 2206, Tillery Hydroelectric Development, Deviation from the Minimum Instantaneous
Dissolved Oxygen Standard.
3Letter from the Federal Energy Regulatory Commission, dated January 10, 2022, Subject: August 3, 2021
Notification of Dissolved Oxygen Deviation – Article 402.
5

4.0 References
NCDENR-DWQ. 2007. NCDENR-Division of Water Quality – Redbook. Surface waters and wetlands
standards. North Carolina Administrative Code 15A NCAC 02B.0100, .0200 & .0300. Amended
effective: May 1, 2007. North Carolina Department of Environment and Natural Resources, Division of
Water Quality, Raleigh, North Carolina. (as cited in Progress Energy Carolinas, Inc. 2012)

Progress Energy Carolinas, Inc. 2012. Yadkin Pee-Dee Hydroelectric Project No. 2206, Tillery and
Blewett Falls Developments, Dissolved Oxygen Compliance Implementation Plan, January 20, 2012.
Progress Energy Carolinas, Inc., Charlotte, North Carolina.
6

Figure 1. Daily average and minimum DO concentrations downstream of the Tillery Development (USGS Station No. 0212378405),
May 1 - November 30, 2021.

7

Figure 2. Daily average, and minimum DO concentrations downstream of the Blewett Falls Development (USGS Station No. 212880025),
May 1 - November 30, 2021.

8

Figure 3. Daily average, minimum, and maximum water temperatures downstream of the Tillery Development (USGS Station No.
0212378405), May 1 - November 30, 2021.

9

Figure 4. Daily average, minimum, and maximum water temperatures downstream of the Blewett Falls Development (USGS Station No.
0212880025), May 1 - November 30, 2021.

10

Table 1. Daily average, minimum, and maximum DO (mg/L) and water temperature (Deg C)
downstream of the Tillery Development (USGS Station No. 0212378405) May 1 -
November 30, 2021.

Table 1: Tillery Development

Daily Daily Daily Daily Daily Daily

Avg Temp Min Temp Max Temp Avg DO Min DO Max DO

Date (Deg C) (Deg C) (Deg C) (mg/L) (mg/L) (mg/L) N
5/1/2021 18.5 17.9 19.0 8.2 6.5 9.3 95
5/2/2021 18.3 17.8 18.9 8.1 6.7 9.1 96
5/3/2021 18.3 18.1 18.7 7.5 6.8 8.6 95
5/4/2021 18.7 18.1 19.3 8.4 7.5 10.2 94
5/5/2021 18.9 18.2 19.2 8.1 7.7 8.5 96
5/6/2021 19.4 19.1 19.7 8.2 7.7 8.8 95
5/7/2021 19.8 19.3 20.3 8.7 7.9 9.7 95
5/8/2021 19.7 19.3 20.1 8.7 8.0 9.6 96
5/9/2021 19.4 19.1 21.9 8.4 7.9 11.6 96
5/10/2021 19.5 19.2 19.8 8.8 8.1 9.8 95
5/11/2021 19.9 19.7 20.2 9.0 8.4 10.0 95
5/12/2021 20.0 19.8 20.2 9.0 8.4 9.7 95
5/13/2021 19.9 19.7 20.2 9.1 8.4 10.2 94
5/14/2021 19.9 19.5 20.3 8.7 8.2 9.1 95
5/15/2021 19.9 19.6 20.3 8.5 8.1 9.0 96
5/16/2021 19.8 19.7 20.2 8.6 8.4 9.0 96
5/17/2021 19.9 19.6 20.2 8.8 8.4 9.2 95
5/18/2021 20.1 19.6 20.5 9.0 6.8 10.6 96
5/19/2021 20.3 19.3 23.3 8.5 6.6 10.5 96
5/20/2021 20.3 19.4 21.2 8.7 6.4 10.4 95
5/21/2021 20.7 19.7 24.5 8.5 6.1 10.3 96
5/22/2021 21.6 20.4 25.9 8.8 7.5 10.4 94
5/23/2021 20.9 20.4 21.3 8.0 6.0 9.0 95
5/24/2021 21.3 20.9 22.2 8.1 5.9 9.3 96
5/25/2021 21.3 20.9 22.7 8.5 7.8 9.1 96
5/26/2021 21.3 21.2 21.5 8.4 7.7 9.4 95
5/27/2021 22.0 21.0 26.2 8.2 7.1 9.6 96
5/28/2021 22.0 21.5 24.0 8.3 6.0 9.2 96
5/29/2021 22.3 21.6 24.6 8.4 7.1 9.8 95
5/30/2021 22.5 21.8 23.7 7.8 5.6 9.4 96
5/31/2021 22.4 21.5 25.6 7.8 5.8 9.7 96
6/1/2021 21.7 21.2 22.2 6.8 5.9 8.1 96
6/2/2021 22.0 21.5 24.0 7.0 5.6 9.5 96
6/3/2021 21.9 21.7 22.4 7.7 6.5 8.5 95

11

Table 1: Tillery Development

Daily Daily Daily Daily Daily Daily
Avg Temp Min Temp Max Temp Avg DO Min DO Max DO
Date (Deg C) (Deg C) (Deg C) (mg/L) (mg/L) (mg/L) N
6/4/2021 22.0 21.7 22.4 7.2 6.3 8.4 96
6/5/2021 23.2 22.2 27.1 7.4 5.7 9.0 95
6/6/2021 22.9 21.9 27.5 7.5 5.4 8.8 96
6/7/2021 22.4 21.8 23.0 7.0 5.8 8.3 96
6/8/2021 22.9 22.5 23.5 7.1 5.8 8.7 96
6/9/2021 23.0 22.5 23.5 7.4 6.0 8.2 96
6/10/2021 23.5 22.7 25.8 6.6 5.6 8.7 90
6/11/2021 23.3 22.9 23.8 6.2 5.5 7.4 95
6/12/2021 24.0 23.4 24.4 6.0 5.6 6.4 96
6/13/2021 24.5 24.0 25.2 6.9 5.8 8.0 96
6/14/2021 24.5 24.0 25.3 6.9 5.8 7.5 95
6/15/2021 24.6 24.0 25.1 6.2 5.5 7.2 95
6/16/2021 24.8 24.4 25.4 6.1 5.2 7.5 96
6/17/2021 24.6 24.3 25.0 5.5 5.1 6.2 96
6/18/2021 24.6 24.4 24.7 5.5 5.0 6.5 96
6/19/2021 25.3 24.4 28.2 6.9 5.4 8.7 96
6/20/2021 24.6 24.3 24.8 6.3 5.4 6.8 96
6/21/2021 25.2 24.6 27.4 6.6 5.2 8.4 94
6/22/2021 25.0 24.4 26.8 6.6 5.2 8.6 95
6/23/2021 25.5 24.5 29.2 6.9 5.6 8.5 95
6/24/2021 25.6 24.8 29.1 6.9 5.7 8.5 96
6/25/2021 25.5 24.7 28.2 7.0 6.1 8.7 96
6/26/2021 25.9 24.9 29.3 7.0 6.0 8.5 95
6/27/2021 26.0 24.9 30.3 6.9 5.9 8.5 96
6/28/2021 26.2 25.3 29.6 6.6 5.0 8.5 96
6/29/2021 26.1 25.4 29.5 7.0 5.5 8.9 96
6/30/2021 25.8 25.5 26.4 6.7 5.1 7.7 96
7/1/2021 25.8 25.4 26.3 6.5 5.4 7.6 96
7/2/2021 25.7 25.3 26.6 6.7 6.1 7.7 96
7/3/2021 27.1 26.0 30.1 7.3 6.1 8.4 96
7/4/2021 26.4 26.0 26.8 7.1 5.9 8.0 96
7/5/2021 26.4 25.9 27.0 7.0 5.1 8.1 96
7/6/2021 26.3 26.0 26.9 6.9 5.8 7.4 94
7/7/2021 26.3 26.1 26.9 6.6 5.6 7.7 95
7/8/2021 26.6 26.0 27.3 6.4 5.3 6.9 96
7/9/2021 26.9 26.7 27.0 6.6 6.0 7.1 96
7/10/2021 27.2 26.6 29.8 6.8 5.1 8.6 95
7/11/2021 27.1 26.6 29.4 6.6 5.1 8.1 95

12

Table 1: Tillery Development

Daily Daily Daily Daily Daily Daily
Avg Temp Min Temp Max Temp Avg DO Min DO Max DO
Date (Deg C) (Deg C) (Deg C) (mg/L) (mg/L) (mg/L) N
7/12/2021 26.8 26.3 27.3 6.3 5.3 6.9 96
7/13/2021 27.0 26.6 27.6 6.7 5.6 7.7 94
7/14/2021 27.7 26.6 30.8 6.7 5.2 7.9 96
7/15/2021 27.5 27.1 28.1 6.8 5.5 7.7 96
7/16/2021 27.4 27.0 27.9 6.5 5.5 7.5 95
7/17/2021 27.3 26.9 27.9 6.3 5.3 7.2 96
7/18/2021 27.5 27.1 28.2 6.3 5.1 7.6 96
7/19/2021 27.5 27.3 27.7 6.2 5.1 7.1 95
7/20/2021 27.6 27.3 27.9 6.4 5.0 7.5 95
7/21/2021 27.8 27.6 28.1 6.7 5.4 7.5 96
7/22/2021 27.9 27.4 28.3 6.7 5.1 7.8 96
7/23/2021 27.9 27.6 28.5 6.7 5.4 7.6 96
7/24/2021 28.2 27.2 31.2 7.0 5.3 8.4 96
7/25/2021 27.9 27.0 30.7 7.0 5.5 8.9 96
7/26/2021 28.0 27.0 31.0 6.9 5.2 8.9 96
7/27/2021 28.1 27.8 28.7 7.1 5.3 8.1 95
7/28/2021 28.3 27.8 29.0 7.0 5.2 8.1 96
7/29/2021 28.1 27.6 30.7 6.7 5.0 8.0 94
7/30/2021 28.1 27.8 28.4 6.5 5.2 7.4 96
7/31/2021 28.6 28.1 29.2 6.7 5.3 7.9 96
8/1/2021 28.8 28.4 29.1 6.8 5.2 7.6 96
8/2/2021 28.9 28.3 29.4 6.8 5.2 7.7 95
8/3/2021 28.5 28.2 29.0 6.6 3.8 7.6 96
8/4/2021 28.4 27.7 29.3 6.8 5.2 8.0 91
8/5/2021 28.4 27.6 31.1 6.7 5.5 8.3 96
8/6/2021 28.1 27.2 29.3 6.7 5.6 8.5 96
8/7/2021 28.3 27.6 30.2 7.1 6.3 8.6 96
8/8/2021 28.5 27.4 31.3 6.7 5.8 8.3 96
8/9/2021 28.2 27.4 31.1 6.5 5.8 8.3 95
8/10/2021 28.3 27.5 31.1 6.5 5.6 8.6 96
8/11/2021 27.9 27.3 28.6 6.7 5.9 7.4 96
8/12/2021 28.1 27.5 29.5 6.7 5.7 7.8 95
8/13/2021 28.4 27.7 31.1 6.9 5.7 8.1 96
8/14/2021 28.5 27.7 31.8 7.0 5.8 8.2 95
8/15/2021 28.7 27.6 32.2 7.0 5.7 8.4 96
8/16/2021 28.2 28.1 28.8 6.8 6.1 7.3 96
8/17/2021 28.1 27.9 28.3 6.2 5.3 7.7 95
8/18/2021 28.3 27.8 28.7 7.6 6.6 8.0 96
8/19/2021 28.6 28.5 28.8 7.3 5.2 7.8 95
8/20/2021 28.8 28.5 29.4 7.5 6.9 7.9 96
13

Table 1: Tillery Development
Daily Daily Daily Daily Daily Daily
Avg Temp Min Temp Max Temp Avg DO Min DO Max DO
Date (Deg C) (Deg C) (Deg C) (mg/L) (mg/L) (mg/L) N
8/21/2021 28.9 28.4 29.6 7.3 6.4 8.0 96
8/22/2021 28.8 28.5 29.2 7.4 7.0 8.0 96
8/23/2021 28.7 28.3 29.3 7.2 6.6 7.8 96
8/24/2021 29.0 28.4 29.6 6.8 5.2 7.6 95
8/25/2021 28.8 28.6 29.1 6.8 6.0 7.4 65
8/26/2021 28.8 28.5 29.3 6.7 6.0 7.3 95
8/27/2021 29.3 28.5 32.4 7.3 6.5 8.8 95
8/28/2021 29.6 28.6 33.0 7.3 6.2 9.0 94
8/29/2021 29.4 28.2 32.9 6.9 5.5 9.0 94
8/30/2021 29.2 28.0 32.4 7.1 5.4 8.9 96
8/31/2021 28.7 28.1 29.4 6.4 5.5 7.5 96
9/1/2021 28.4 27.9 28.9 6.4 5.8 6.9 95
9/2/2021 28.6 27.6 29.8 7.2 6.1 8.3 96
9/3/2021 28.3 27.1 30.0 7.0 5.9 8.5 96
9/4/2021 28.4 27.2 30.7 7.2 6.0 8.8 95
9/5/2021 28.2 27.3 30.6 7.0 6.0 8.9 95
9/6/2021 28.2 27.3 29.5 7.1 6.1 9.1 96
9/7/2021 28.3 27.2 30.9 7.2 5.8 9.0 95
9/8/2021 28.2 27.5 30.3 6.8 5.8 9.1 96
9/9/2021 27.9 27.4 29.4 6.9 6.0 8.8 96
9/10/2021 27.7 26.5 29.9 7.4 5.9 9.3 95
9/11/2021 27.7 26.4 30.6 7.7 6.3 9.3 96
9/12/2021 27.7 26.1 30.6 7.5 6.2 9.6 96
9/13/2021 27.5 26.4 30.2 7.2 6.3 9.7 93
9/14/2021 27.1 26.4 27.8 6.8 6.2 8.0 96
9/15/2021 27.0 26.4 27.6 6.8 5.7 8.0 96
9/16/2021 27.0 26.6 27.6 7.1 6.1 9.0 94
9/17/2021 27.2 26.8 27.6 7.3 6.1 8.4 96
9/18/2021 27.6 26.9 29.7 7.3 5.0 8.6 94
9/19/2021 27.8 26.8 29.6 7.2 5.0 9.0 94
9/20/2021 27.3 26.6 29.7 7.3 5.8 9.6 95
9/21/2021 26.9 26.4 27.4 7.1 5.8 8.4 96
9/22/2021 26.9 26.4 27.4 6.2 5.3 7.8 91
9/23/2021 26.9 26.8 27.1 6.5 5.8 7.0 94
9/24/2021 26.6 26.5 26.9 7.0 6.7 7.5 96
9/25/2021 26.4 26.3 26.6 7.7 7.1 7.9 96
9/26/2021 26.1 25.8 26.4 7.4 6.9 8.0 95
9/27/2021 25.6 25.4 25.9 6.6 5.6 7.4 95
14

Table 1: Tillery Development

Daily Daily Daily Daily Daily Daily
Avg Temp Min Temp Max Temp Avg DO Min DO Max DO
Date (Deg C) (Deg C) (Deg C) (mg/L) (mg/L) (mg/L) N
9/28/2021 25.8 24.8 28.4 7.2 5.7 9.2 96
9/29/2021 25.6 24.5 28.6 7.2 5.7 9.5 91
9/30/2021 25.7 24.9 28.3 7.2 6.0 9.6 96
10/1/2021 25.5 24.6 27.4 7.4 6.4 9.6 96
10/2/2021 25.4 24.6 27.0 7.4 6.2 9.2 94
10/3/2021 25.4 24.4 27.4 6.9 5.2 9.3 96
10/4/2021 25.5 24.9 27.5 7.2 6.3 9.7 96
10/5/2021 25.6 24.8 28.0 7.0 5.2 9.6 95
10/6/2021 25.5 24.9 27.1 6.9 5.6 9.5 94
10/7/2021 25.2 24.9 25.4 6.8 6.2 8.2 96
10/8/2021 25.1 24.8 25.4 7.4 6.4 8.6 94
10/9/2021 25.0 24.2 25.3 8.0 6.6 8.6 96
10/10/2021 24.7 24.0 25.8 7.7 6.6 8.8 96
10/11/2021 24.6 24.1 25.1 7.8 6.6 8.7 94
10/12/2021 24.7 24.0 26.4 7.6 6.5 9.1 96
10/13/2021 24.8 23.5 27.8 7.4 6.3 9.2 96
10/14/2021 24.2 23.6 26.2 7.4 6.5 9.2 94
10/15/2021 24.0 23.4 26.1 7.0 6.2 9.1 95
10/16/2021 24.0 23.0 26.5 7.6 6.6 9.2 96
10/17/2021 23.2 22.4 24.6 7.6 6.9 9.5 95
10/18/2021 23.2 22.1 25.4 7.8 6.8 9.5 96
10/19/2021 23.3 21.8 25.6 7.8 6.8 9.7 96
10/20/2021 23.2 21.7 25.9 8.0 6.7 9.9 95
10/21/2021 23.1 21.6 25.6 8.1 6.6 10.1 95
10/22/2021 23.2 22.3 25.7 8.0 6.8 10.2 96
10/23/2021 22.8 21.6 24.7 8.1 6.8 9.9 95
10/24/2021 22.7 21.3 25.3 8.2 7.0 10.4 95
10/25/2021 22.7 21.9 24.6 7.8 5.8 10.2 96
10/26/2021 21.9 19.9 23.5 7.9 6.6 10.0 94
10/27/2021 21.5 19.8 23.9 8.1 6.9 10.1 95
10/28/2021 21.4 20.3 22.7 7.8 6.5 9.9 96
10/29/2021 21.6 20.7 23.1 7.9 6.8 9.8 95
10/30/2021 21.1 20.0 22.4 8.2 6.8 10.1 96
10/31/2021 21.2 20.0 23.1 8.2 7.1 10.0 96
11/1/2021 21.0 19.4 23.2 8.4 7.1 10.1 95
11/2/2021 20.6 19.3 21.2 7.3 6.9 8.3 96
11/3/2021 20.3 19.2 20.6 7.6 7.3 8.2 96
11/4/2021 19.9 19.0 20.4 8.1 6.7 8.9 95

15

Table 1: Tillery Development

Daily Daily Daily Daily Daily Daily
Avg Temp Min Temp Max Temp Avg DO Min DO Max DO
Date (Deg C) (Deg C) (Deg C) (mg/L) (mg/L) (mg/L) N
11/5/2021 19.2 17.6 19.8 8.0 7.7 8.7 96
11/6/2021 19.0 18.7 19.3 7.8 7.4 8.2 96
11/7/2021 18.5 18.2 19.0 8.2 7.8 9.9 100a
11/8/2021 18.1 16.6 19.9 9.1 7.5 10.4 96
11/9/2021 17.5 16.4 18.4 9.3 8.3 10.4 96
11/10/2021 17.4 16.8 18.4 9.5 8.5 10.6 94
11/11/2021 17.3 16.6 18.2 9.5 8.1 10.6 96
11/12/2021 17.7 17.0 19.5 9.4 8.3 11.0 96
11/13/2021 17.2 15.8 19.2 9.5 8.3 11.0 96
11/14/2021 16.9 15.2 18.8 9.5 8.2 11.1 96
11/15/2021 16.6 15.4 18.0 8.8 8.2 10.8 96
11/16/2021 16.5 15.1 17.9 9.1 8.4 10.8 96
11/17/2021 16.7 15.3 19.0 9.2 8.0 11.1 96
11/18/2021 16.7 15.4 19.0 9.5 8.5 11.3 94
11/19/2021 16.0 14.5 17.4 10.0 8.7 11.4 96
11/20/2021 15.8 14.3 17.5 9.9 8.8 11.7 96
11/21/2021 15.8 14.2 17.8 9.8 8.6 12.0 96
11/22/2021 15.6 14.1 16.6 9.5 8.4 11.7 96
11/23/2021 14.6 13.1 15.9 9.7 8.6 11.5 96
11/24/2021 15.1 13.5 16.4 9.6 9.0 11.6 96
11/25/2021 14.9 13.4 16.6 9.7 8.6 11.8 96
11/26/2021 14.5 13.2 15.5 9.9 8.7 11.6 96
11/27/2021 14.2 12.8 16.0 10.4 9.1 11.9 96
11/28/2021 14.1 12.8 15.6 10.1 9.0 12.1 96
11/29/2021 13.7 12.6 15.2 10.5 9.2 12.1 96
11/30/2021 13.5 12.2 15.0 9.7 8.9 11.7 96

aDaylight savings time.

16

Table 2. Daily average, minimum, and maximum DO (mg/L) and water temperature (Deg C)
measured downstream of the Blewett Falls Development (USGS Station No.
0212880025) May 1 - November 30, 2021.

Table 2: Blewett Falls Development
Daily Daily Daily Daily Daily Daily
Avg Temp Min Temp Max Temp Avg DO Min DO Max DO
Date (Deg C) (Deg C) (Deg C) (mg/L) (mg/L) (mg/L) N
5/1/2021 20.5 20.2 20.8 8.0 7.8 8.3 96
5/2/2021 20.4 20.1 20.7 8.1 7.7 8.6 94
5/3/2021 20.8 20.5 21.0 8.4 8.1 8.7 96
5/4/2021 20.8 20.4 21.7 8.3 7.8 8.8 96
5/5/2021 21.0 20.5 21.7 8.2 7.6 8.6 96
5/6/2021 21.0 20.7 21.4 8.5 8.3 8.7 96
5/7/2021 20.7 20.4 21.1 8.5 8.0 8.9 96
5/8/2021 20.4 20.2 20.6 8.7 8.1 9.2 96
5/9/2021 20.2 19.9 20.4 8.9 8.6 9.2 96
5/10/2021 20.8 20.4 21.2 9.2 8.9 9.6 96
5/11/2021 21.1 20.8 21.4 9.1 8.8 9.4 96
5/12/2021 20.8 20.1 21.2 9.1 8.8 9.2 96
5/13/2021 19.5 19.1 20.1 9.0 8.8 9.2 96
5/14/2021 19.7 19.3 20.3 8.9 8.7 9.1 96
5/15/2021 20.3 20.0 20.8 8.9 8.7 9.2 96
5/16/2021 20.5 20.3 20.7 8.8 8.5 9.0 96
5/17/2021 20.8 20.4 21.1 8.6 8.4 8.9 96
5/18/2021 21.1 20.8 21.3 8.4 8.0 8.6 94
5/19/2021 21.3 21.0 21.6 8.4 8.1 8.8 95
5/20/2021 22.0 21.4 22.4 8.6 8.3 9.1 96
5/21/2021 23.0 22.3 23.6 8.9 8.3 9.5 96
5/22/2021 23.6 23.5 23.8 8.8 8.4 9.3 94
5/23/2021 23.7 23.3 24.8 8.9 8.3 10.0 95
5/24/2021 23.8 23.5 24.3 8.5 8.2 8.9 95
5/25/2021 23.8 23.5 24.1 8.2 7.9 8.6 96
5/26/2021 24.3 24.0 25.0 8.1 7.6 8.9 96
5/27/2021 24.7 24.4 25.0 8.1 7.7 8.6 95
5/28/2021 24.5 24.2 25.0 7.6 7.3 8.0 96
5/29/2021 24.9 24.7 25.1 7.7 7.2 8.2 95
5/30/2021 24.3 23.9 25.0 8.3 7.9 8.6 96
5/31/2021 23.5 22.9 23.9 7.9 7.5 8.2 95
6/1/2021 23.1 22.6 23.8 8.2 7.4 9.1 96
6/2/2021 24.0 23.1 24.5 8.7 8.1 9.3 95
6/3/2021 23.9 23.6 24.3 8.1 7.9 8.5 96

17

Table 2: Blewett Falls Development
Daily Daily Daily Daily Daily Daily
Avg Temp Min Temp Max Temp Avg DO Min DO Max DO
Date (Deg C) (Deg C) (Deg C) (mg/L) (mg/L) (mg/L) N
6/4/2021 23.6 23.4 23.8 7.8 7.5 8.1 96
6/5/2021 23.8 23.6 24.0 7.6 7.1 8.0 94
6/6/2021 24.1 23.7 24.7 7.4 6.8 7.8 95
6/7/2021 25.2 24.5 26.1 7.5 6.8 8.5 94
6/8/2021 25.8 25.3 26.2 7.9 7.6 8.5 94
6/9/2021 25.3 24.9 25.7 7.7 7.2 8.6 91
6/10/2021 25.7 25.4 26.1 7.1 6.6 7.7 95
6/11/2021 26.3 25.7 26.7 7.5 6.5 8.2 96
6/12/2021 25.7 25.3 26.2 7.8 7.5 8.2 94
6/13/2021 25.3 24.9 26.1 7.7 7.3 8.4 93
6/14/2021 26.1 25.7 26.7 7.7 7.3 8.4 94
6/15/2021 27.0 26.0 28.1 8.0 7.2 9.0 96
6/16/2021 27.3 26.8 27.7 8.0 7.6 8.6 92
6/17/2021 26.6 26.2 27.1 8.2 7.6 8.7 95
6/18/2021 25.7 25.3 26.1 8.0 7.7 8.3 96
6/19/2021 26.3 25.9 26.7 7.9 7.5 8.1 96
6/20/2021 26.4 26.1 26.8 7.9 7.2 8.4 96
6/21/2021 26.2 26.0 26.5 7.8 7.5 8.1 94
6/22/2021 26.6 26.3 26.9 7.7 7.5 8.1 95
6/23/2021 26.5 26.4 26.6 7.0 6.0 7.6 96
6/24/2021 26.3 26.0 26.5 7.0 6.5 7.7 96
6/25/2021 26.1 25.9 26.4 7.7 7.3 8.2 96
6/26/2021 25.9 25.6 26.3 7.5 6.8 8.1 96
6/27/2021 26.1 25.6 27.1 7.6 6.7 9.5 96
6/28/2021 26.8 26.2 27.6 7.5 6.0 9.1 96
6/29/2021 27.9 27.6 28.3 8.0 7.4 9.3 96
6/30/2021 28.4 27.9 28.8 7.5 7.1 8.0 96
7/1/2021 28.9 28.6 29.2 7.8 7.3 8.3 95
7/2/2021 28.5 27.9 29.0 7.8 7.4 8.1 96
7/3/2021 27.6 27.4 27.9 7.2 6.9 7.7 96
7/4/2021 27.1 26.7 27.4 7.0 6.5 8.1 95
7/5/2021 27.0 26.8 27.3 7.6 7.1 8.3 96
7/6/2021 27.8 27.0 28.4 8.7 7.1 9.8 96
7/7/2021 28.3 27.6 28.7 8.4 7.6 9.2 95
7/8/2021 27.9 27.4 28.4 7.8 7.4 8.4 96
7/9/2021 27.0 26.5 27.5 7.2 6.8 7.7 96
7/10/2021 27.4 27.0 27.7 7.1 6.7 7.5 96
7/11/2021 27.7 27.4 28.1 6.9 6.5 7.5 95
7/12/2021 28.4 28.0 28.9 7.3 6.3 7.9 93

18

Table 2: Blewett Falls Development
Daily Daily Daily Daily Daily Daily
Avg Temp Min Temp Max Temp Avg DO Min DO Max DO
Date (Deg C) (Deg C) (Deg C) (mg/L) (mg/L) (mg/L) N
7/13/2021 29.1 28.9 29.3 7.4 6.6 8.0 91
7/14/2021 29.1 28.7 29.3 7.3 6.8 7.7 96
7/15/2021 29.2 28.9 29.7 7.5 6.8 8.3 88
7/16/2021 29.3 29.0 29.7 7.6 6.7 8.2 90
7/17/2021 29.6 29.2 29.9 7.7 7.2 8.4 92
7/18/2021 29.5 29.2 29.7 7.7 7.2 8.1 92
7/19/2021 28.9 28.8 29.3 7.6 7.2 8.1 94
7/20/2021 27.9 27.6 28.7 7.2 6.5 8.0 94
7/21/2021 28.0 27.7 28.7 7.6 6.9 8.4 96
7/22/2021 28.5 28.2 28.9 7.4 6.8 8.0 96
7/23/2021 28.7 28.5 28.9 7.0 6.1 7.4 96
7/24/2021 28.9 28.6 29.2 6.7 6.0 7.5 96
7/25/2021 29.0 28.8 29.3 7.0 6.3 7.6 93
7/26/2021 29.2 29.0 29.6 7.2 6.5 7.9 96
7/27/2021 29.6 29.3 30.0 7.5 6.2 8.4 96
7/28/2021 30.0 29.5 30.5 7.4 6.3 8.3 95
7/29/2021 29.9 29.4 30.2 7.5 6.8 8.2 94
7/30/2021 30.0 29.6 30.3 7.5 6.9 8.0 95
7/31/2021 29.9 29.5 30.1 7.4 6.8 8.1 96
8/1/2021 29.8 29.5 30.2 7.0 6.2 8.5 95
8/2/2021 29.8 29.6 29.9 7.7 7.4 8.2 88
8/3/2021 29.3 28.8 29.6 7.2 6.7 7.8 96
8/4/2021 28.0 27.4 28.8 7.1 6.6 7.6 96
8/5/2021 27.3 27.0 27.6 6.9 6.6 7.4 96
8/6/2021 27.3 27.0 27.6 7.3 6.6 8.2 96
8/7/2021 27.5 27.3 27.7 7.7 6.9 8.5 96
8/8/2021 27.6 27.4 28.0 7.5 6.5 8.4 96
8/9/2021 27.9 27.4 28.3 7.1 6.4 7.7 96
8/10/2021 29.0 28.2 29.6 8.0 7.0 8.9 95
8/11/2021 29.5 28.9 29.8 7.4 6.3 8.3 96
8/12/2021 29.5 29.0 29.9 6.7 6.1 7.2 96
8/13/2021 29.9 29.3 30.6 7.1 6.1 7.9 95
8/14/2021 30.2 29.9 30.4 7.3 6.4 8.2 96
8/15/2021 30.1 29.6 30.3 7.3 6.1 8.3 96
8/16/2021 29.6 29.3 29.7 7.3 6.7 8.0 94
8/17/2021 28.6 28.2 29.3 7.4 7.1 7.8 96
8/18/2021 28.1 27.7 28.7 7.6 7.4 7.9 96
8/19/2021 28.7 28.4 29.0 7.4 7.1 7.6 96
8/20/2021 28.8 28.6 29.0 7.4 7.2 7.6 96

19

Table 2: Blewett Falls Development
Daily Daily Daily Daily Daily Daily
Avg Temp Min Temp Max Temp Avg DO Min DO Max DO
Date (Deg C) (Deg C) (Deg C) (mg/L) (mg/L) (mg/L) N
8/21/2021 29.0 28.8 29.4 7.5 6.9 7.8 96
8/22/2021 29.2 29.1 29.4 7.2 6.8 7.6 95
8/23/2021 29.7 29.5 30.0 7.8 7.3 8.2 96
8/24/2021 29.7 29.5 30.0 7.8 7.1 8.4 95
8/25/2021 29.9 29.6 30.1 7.9 7.4 8.4 96
8/26/2021 29.5 29.0 30.0 7.4 6.9 8.1 96
8/27/2021 29.5 29.2 29.7 7.3 7.1 7.6 95
8/28/2021 29.7 29.1 30.2 7.6 6.9 8.4 96
8/29/2021 29.9 29.5 30.6 7.5 6.4 9.3 96
8/30/2021 30.2 29.8 30.8 7.6 6.4 8.7 96
8/31/2021 30.4 30.2 30.6 8.0 6.8 8.9 95
9/1/2021 29.9 29.5 30.4 7.3 6.4 8.4 96
9/2/2021 28.9 28.4 29.5 6.7 6.4 6.8 96
9/3/2021 27.8 27.2 28.4 6.7 6.2 7.2 96
9/4/2021 27.2 26.7 27.4 6.8 6.3 7.1 95
9/5/2021 26.8 26.5 27.4 6.9 6.0 8.3 96
9/6/2021 27.1 26.8 27.5 7.9 6.7 9.5 96
9/7/2021 27.1 27.0 27.4 8.5 7.7 9.5 96
9/8/2021 27.2 27.0 27.7 7.5 6.8 8.7 96
9/9/2021 27.8 27.6 27.9 8.1 7.6 8.4 96
9/10/2021 27.2 26.9 27.7 7.5 7.2 7.8 96
9/11/2021 26.6 26.1 27.0 7.2 6.8 7.6 96
9/12/2021 26.1 25.9 26.4 7.3 6.8 8.1 96
9/13/2021 26.2 26.0 26.6 8.0 6.9 9.1 96
9/14/2021 26.7 26.3 27.0 8.5 6.9 9.6 95
9/15/2021 27.3 26.8 27.6 8.3 7.4 9.0 96
9/16/2021 27.6 27.4 27.7 8.2 7.6 8.5 96
9/17/2021 27.3 27.1 27.7 7.3 6.7 8.1 96
9/18/2021 27.0 26.9 27.2 7.0 6.5 7.4 96
9/19/2021 27.2 27.0 27.4 6.5 5.7 7.2 95
9/20/2021 27.3 27.2 27.4 6.7 5.8 7.4 94
9/21/2021 27.3 27.2 27.4 7.3 6.8 8.0 93
9/22/2021 26.9 26.4 27.2 7.0 6.6 7.5 95
9/23/2021 25.8 25.2 26.5 7.4 6.9 7.8 96
9/24/2021 24.9 24.4 25.2 7.1 6.8 7.4 96
9/25/2021 24.8 24.6 25.1 7.4 7.1 7.6 95
9/26/2021 24.9 24.5 25.4 7.6 7.3 8.0 94

20

Table 2: Blewett Falls Development
Daily Daily Daily Daily Daily Daily
Avg Temp Min Temp Max Temp Avg DO Min DO Max DO
Date (Deg C) (Deg C) (Deg C) (mg/L) (mg/L) (mg/L) N
9/27/2021 24.8 24.6 25.0 7.7 7.3 8.0 95
9/28/2021 25.1 24.9 25.3 7.4 7.0 7.9 95
9/29/2021 25.5 25.0 26.4 7.3 6.7 8.3 95
9/30/2021 25.5 25.3 25.7 6.5 6.0 7.0 96
10/1/2021 25.4 25.2 25.6 6.7 6.3 7.2 96
10/2/2021 25.4 25.2 25.6 6.8 6.4 7.4 93
10/3/2021 25.3 25.1 25.5 7.1 6.2 7.7 96
10/4/2021 25.4 25.3 25.7 7.4 6.6 8.0 96
10/5/2021 25.5 25.3 25.7 7.5 6.7 7.9 94
10/6/2021 25.7 25.5 26.0 7.1 6.6 7.6 96
10/7/2021 25.9 25.7 26.1 7.2 7.0 7.5 96
10/8/2021 25.2 24.9 25.7 6.9 6.6 7.2 95
10/9/2021 24.3 23.6 24.9 7.4 6.8 7.8 96
10/10/2021 22.8 22.4 23.5 7.5 7.0 7.7 96
10/11/2021 22.5 22.4 22.6 6.7 6.2 7.4 94
10/12/2021 22.4 22.2 22.8 6.1 5.7 6.4 95
10/13/2021 22.8 22.6 23.0 6.2 5.8 6.4 96
10/14/2021 23.2 22.8 23.9 6.4 5.8 7.5 95
10/15/2021 23.7 23.6 23.8 6.9 6.6 7.4 96
10/16/2021 24.2 23.7 24.7 7.3 6.5 8.4 96
10/17/2021 23.5 23.1 24.2 7.7 7.4 8.1 95
10/18/2021 22.6 22.2 23.1 7.5 7.1 7.9 96
10/19/2021 21.6 20.9 22.1 7.4 7.1 7.6 96
10/20/2021 20.9 20.7 21.3 7.5 7.0 8.2 96
10/21/2021 21.0 20.7 21.3 7.7 7.3 8.6 96
10/22/2021 21.2 20.9 21.7 7.9 7.4 8.7 95
10/23/2021 21.5 21.3 21.8 8.1 7.7 8.5 96
10/24/2021 21.4 21.2 21.6 7.8 7.3 8.3 96
10/25/2021 21.3 21.2 21.5 7.5 7.1 7.8 95
10/26/2021 21.6 21.3 21.8 8.0 7.2 8.4 94
10/27/2021 20.8 20.5 21.3 8.1 7.9 8.4 96
10/28/2021 20.2 19.9 20.6 7.9 7.6 8.1 95
10/29/2021 19.8 19.6 19.9 7.6 7.5 7.7 96
10/30/2021 19.3 19.0 19.6 7.6 7.5 7.8 96
10/31/2021 18.9 18.7 19.1 7.8 7.6 8.1 96
11/1/2021 18.8 18.6 19.1 7.9 7.5 8.2 96
11/2/2021 18.7 18.5 19.1 7.9 7.4 8.4 95
11/3/2021 18.3 18.1 18.9 8.4 8.2 8.8 96
11/4/2021 17.7 17.4 18.0 8.4 8.2 8.5 96

21

Table 2: Blewett Falls Development
Daily Daily Daily Daily Daily Daily
Avg Temp Min Temp Max Temp Avg DO Min DO Max DO
Date (Deg C) (Deg C) (Deg C) (mg/L) (mg/L) (mg/L) N
11/5/2021 16.8 16.4 17.4 8.4 8.2 8.6 96
11/6/2021 16.2 16.0 16.4 8.8 8.4 9.2 95
11/7/2021 16.0 15.7 16.2 9.1 8.9 9.2 100a
11/8/2021 15.9 15.6 16.2 9.0 8.8 9.2 96
11/9/2021 15.9 15.8 16.1 9.0 8.8 9.2 96
11/10/2021 16.0 15.8 16.3 8.9 8.5 9.2 96
11/11/2021 16.3 16.1 16.5 8.7 8.4 9.0 95
11/12/2021 17.1 16.4 17.7 9.0 8.2 9.7 95
11/13/2021 17.2 17.0 17.4 9.1 8.9 9.5 96
11/14/2021 16.6 16.4 17.0 8.9 8.7 9.3 96
11/15/2021 16.0 15.5 16.4 8.9 8.6 9.2 96
11/16/2021 15.0 14.4 15.5 9.0 8.8 9.2 95
11/17/2021 14.4 14.3 14.5 9.3 9.1 9.5 96
11/18/2021 14.8 14.5 15.1 9.2 9.1 9.4 96
11/19/2021 15.2 15.0 15.3 9.2 9.1 9.3 96
11/20/2021 14.8 14.5 15.1 9.1 9.0 9.2 96
11/21/2021 14.2 13.8 14.6 9.1 9.0 9.3 96
11/22/2021 13.7 13.5 13.8 9.0 8.9 9.2 96
11/23/2021 13.2 12.6 13.8 9.5 9.2 9.8 96
11/24/2021 12.3 12.1 12.6 9.6 9.4 9.8 95
11/25/2021 11.9 11.8 12.1 9.7 9.4 9.8 96
11/26/2021 12.0 11.9 12.2 9.8 9.7 9.9 96
11/27/2021 12.0 11.8 12.3 9.8 9.6 9.9 96
11/28/2021 11.9 11.8 12.1 9.7 9.5 9.8 96
11/29/2021 11.7 11.6 11.8 9.8 9.6 10.0 96
11/30/2021 11.3 11.1 11.5 9.8 9.8 10.0 96

aDaylight savings time.
22

Table 3. Maintenance/calibration dates for USGS water quality stations at the Tillery and Blewett
Falls developments during the 2021 water quality monitoring period.

Tillery Development: USGS Station No. 0212378405
Date Time Explanation
2021-04-15 06:23-05:00
Retrofit site for new sonde holder/sonde, deploy sonde for
season, downloaded data.
2021-04-28 06:41-05:00
Adjust riot radio settings (adjust power offset in mote radio)
and swap DO/temp probes on sonde, downloaded sonde
data may be in EST, will set sonde time to EDT, upgraded
sonde firmware before final readings, download data.
2021-06-10 06:21-05:00
Replaced 2 35 amp/hr batteries yesterday 6-9 while driving
through area, routine probe swap, discharge mmt 65, cross
section, took sonde offline 0916 est, upgraded sonde
firmware, downloaded sonde/dcp data.
2021-08-04 06:01-05:00
Probe clean/swap to address Duke concerns over low DO,
5614 SDI-12 no data in reply on M1: 22 times;
first at 2021/06/12 00:00:23 last at 2021/08/03 03:45:23,
downloaded data, upgraded sl3 firmware from
8.35 r3369 to 8.42 r3421, changed parameters from param 1
DO param 2 TEMP param 3 SBV to param 1
SBV param 2 DO param 3 TEMP, directional antenna for
radio to sonde gage is present just needs new cable
end, verified sonde was not logging internally since 6/10/21,
wiper time set to every read, cleaned/swapped
probes, cleaned sonde tube, verified good comms after
param change.
2021-08-25 06:26-05:00
Routine visit for site maintenance/mmt 66/probe swap,
09:09 EST unplugged mote riot radio, found that power on
delay on mote never took, spoke with riot tech and got mote
correctly set to 10 sec power on delay, set retry times from
3 to 6, during discharge mmt other tech tried changing riot
radio settings at gage, riot radio fried, back to office to
replace.
2021-08-25 06:22-05:00
visit to replace riot radios, removed at gage lt15g-00046
(fried radio), deployed at gage lt15g-00043, removed at
sonde lt15x-00038, deployed at sonde lt15x-00047, set retry
attempts on gage side riot radio to 6, verified new radios
receiving data, verified RROC receiving data, got
directional antenna in-line after replacing cable end to radio.
2021-09-22 09:03-05:00
Site visit at request of Duke Energy for sonde maintenance
due to some odd low DO over the past weekend,
downloaded data.
2021-11-18 11:01-05:00
Site visit for gps static/upgrade riot radio
firmware/discharge mmt, upgraded riot radio firmware from
150 to 155 on gateway and mote, verified good read from
sonde after, 60.6f at 1214 est.
2021-11-18 14:09-05:00 Levels run to tie GNSS hub to RMs by gage.
2021-12-03 10:28-05:00
Remove sonde for season, capped sonde cable, downloaded
data.

23

Table 3. (continued)

Blewett Falls Development: USGS Station No. 0212880025
Date Time Explanation
2021-04-14 07:02-05:00
Deploy sonde for season, deployed blewitt 1 sonde and
sensors, battery at power house 12.9v, downloaded data.
2021-04-15 13:53-05:00
Site visit to reprogram riot radios to insitu sonde (for
quicker mmt times), sonde offline 0210 EST, sonde online
0218 EST, battery 13.09v, downloaded data.
2021-06-09 11:33-05:00
Routine sonde swap, changed sonde wipe from every read
to every 30min, set to computer time, downloaded data
from sonde and dcp.
2021-07-19 10:41-05:00 Troubleshoot, sonde swap.
2021-08-02 06:08-05:00
Downloaded data, upgraded sl3 firmware from 8.35 r3369
to 8.42 r3421, changed DCP ID from 1 hr 163E9532 to 15
min DCP ID DE2F115C, installed directional antenna and
new radio cable on handrail near gage at dam pointed to
platform in channel (came off of small omni rubber ducky
antenna on gage box),
good read on new antenna/cable, 1050 EST removed port 2
and took sonde off line, changed port 2 address 2 param 1 to
WTMP, param 2 to DO, param 3 SBV (used to be param 1
DO, param 2 WTMP, param 3 SBV), internal sonde logging
ended 1154 EST, no longer logging internally, changed
order of transmission to
external bat volt/do/temp at 1222 EST, verified good
transmission/data at gage 1238 EST, performed DO/temp
cross section (aquatroll500 753279, do 701719, temp
748087).
2021-09-21 10:02-05:00
Routine sonde maintenance at the request of Duke energy to
prepare for dam testing next week, found sonde
significantly fouled - cleaned sonde and sonde tube - took
pics, gh readings taken just before generation started back
up, downloaded data, battery 13v.
2021-09-27 11:05-05:00
Run levels, deployed diver DE323, measured 0.72 to diver,
deployed baro CD135, downloaded data, battery 13.1v.
2021-12-01 10:42-05:00
End of water year - remove DO probe and replace with port
plug, swap temp probe, upgrade riot radio firmware on mote
and gateway from 150 to 155, download data.
y13RIOTTechTITAND155sn6013210040 is the mote.
z13RIOTTechTITAND155sn6013210011 is the gateway,
gage battery 13.3v. diver found 0.72ft (how it was set prior
visit), left at 0.72ft, downloaded data from diver & baro.