20030147 Ver 2_2018 Water Quality Compliance Report_20190412

WATER STRATEGY, HYDRO
LICENSING AND LAKE SERVICES

Duke Energy Corporation
526 South Church Street
Charlotte, NC 28202

April 12, 2019

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)
2018 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 2018 Water Quality Compliance Report required annually for the Project by
Article 402 of the New License.

Please contact Tami Styer at [phone] (Tami.Styer@duke -energy.com) if you have questions or
required additional information.

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

Enclosure: Yadkin-Pee Dee Hydroelectric Project, 2018 Water Quality Compliance Report

cc w/enclosure: Ms. Karen Higgins, Environmental Program Supervisor
Division of Water Resources, 401 Permitting Unit
North Carolina Department of Environmental Quality
1617 Mail Service Center
Raleigh, NC 27699-1617

cc w/o enclosure: Tami Styer
Lynne Dunn
David Scott
Phil Fragapane

Yadkin-Pee Dee Hydroelectric Project

FERC Project No. 2206

2018 Water Quality Compliance Report

Duke Energy Progress, LLC

April 2019

ii

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1

Yadkin-Pee Dee Hydroelectric Project
FERC Project No. 2206

2018 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 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 (DWR).

This report fulfills the annual water quality compliance reporting requirement outlined in the WQC for
monitoring conducted in 2018. The data reported here conform to requirements outlined in the
Compliance Plan, Section 8.0 – Compliance Monitoring and Reporting.

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, 2018, 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, 2018:
• 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 (% sat) 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
2018.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
during the 2018 season were 99.8% for the USGS station at Blewett Falls Development (No.
0212880025) and 95.9% for the USGS station at Tillery Development (No. 0212378405).

On April 27, 2018, Duke Energy notified the Commission and DWR of a high-water event that prevented
the installation of the water quality monitoring equipment at the Tillery Development (No. 0212378405).1
Because of high inflow conditions, it was not safe to install the monitoring equipment in the tailrace until
water levels receded. Duke Energy notified the Commission and DWR again on May 15, 2018, that the
equipment had been installed on May 8, 2018, and was functioning properly.2 In response to the

1 FERC Accession No. 20180427-5222
2 FERC Accession No. 20180515-5289
3

notification, Duke Energy was informed by FERC on June 5, 2018, the delay in the start of monitoring
would not be considered a violation of the Project license.3

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

4.0 Compliance with Water Quality Standards

The WQC issued by 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

Daily Average DO Standard
During the monitoring period (May 1 - November 30, 2018), the Tillery Development daily average DO
concentrations in the tailwaters remained above the state standard of 5.0 mg/L (see Figure 1). The
Blewett Falls Development experienced one day where the daily average DO concentration was 4.8 mg/l
which is below the daily average standard of 5.0 mg/l (see Figure 2). This occurred on September 21,
2018, following the high inflow event associated with Hurricane Florence (with over 12 inches of rainfall
in the Project area) which resulted in inoperable generating units due to the flooded powerhouse. Because
the station enhances DO levels by utilizing vent valves to aerate the flow release when the generating
units are operating, providing additional aeration to enhance the daily average DO concentrations on
September 21st was not possible. This deviation was attributable to a large quantity of oxygen-poor water
and was not a result of Project operations.

Lake level deviations at Duke Energy’s Yadkin-Pee Dee Project resulting from the heavy inflow were
reported to the Commission on October 5, 20184, but the daily average DO deviation was not discovered
until the compilation of this report. Loss of power to the Programmable Logic Controller (PLC) resulted

3 FERC Accession No. 20180605-3005
4 FERC Accession No. 20181005-5197
4

in loss of the warning system which under normal operating conditions, would alarm to notify the
operators of the approaching limit.

Instantaneous DO Standard
During the 2018 monitoring season, the instantaneous DO concentrations in the tailwaters of the Blewett
Falls Development did not fall below the 4.0 mg/L standard (see Figure 2). The only instance of
recorded DO values below the state instantaneous standard occurred at the Tillery Development on
August 1, 2018, when USGS Station No. 0212378405 recorded a single DO value of 3.9 mg/l, at 19:45
while the hydro station was operating. Duke Energy notified FERC and DWR on August 7, 20185 . The
low DO value was the result of the high inflow events and the ensuing large quantity of oxygen-poor
water and oxygen demanding material coming into Lake Tillery over a short period of time. In response
to the notification, Duke Energy was informed by FERC on November 6, 2018, that the deviation would
not be considered a violation of the Project license.6

5 FERC Accession No. 20180807-5104
6 FERC Accession No. 20181106-3013
5

5.0 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, 2018

0
2
4
6
8
10
12
5/1/2018 6/1/2018 7/2/2018 8/2/2018 9/2/2018 10/3/2018 11/3/2018 12/4/2018
Di
s
s
o
l
v
e
d

O
x
y
g
e
n
,

m
g
/
l
Date
2018 Dissolved Oxygen -Tillery Development
Daily Minimum Daily Average Instantaneous DO Standard Daily Average DO Standard
7

Figure 2: Daily average, and minimum DO concentrations downstream of the Blewett Falls Development (USGS Station No. 0212880025), May
1 - November 30, 2018
2.0
4.0
6.0
8.0
10.0
12.0
5/1/2018 6/1/2018 7/2/2018 8/2/2018 9/2/2018 10/3/2018 11/3/2018 12/4/2018
Di
s
s
o
l
v
e
d

O
x
y
g
e
n
,

m
g
/
l
Date
2018 Dissolved Oxygen -Blewett Falls Development
Daily Minimum Daily Average Instantaneous DO Standard Daily Average DO Standard
8

Figure 3: Daily average, minimum, and maximum water temperatures downstream of the Tillery Development (USGS Station No. 0212378405),
May 1 - November 30, 2018
0
5
10
15
20
25
30
35
5/1/2018 6/1/2018 7/2/2018 8/2/2018 9/2/2018 10/3/2018 11/3/2018 12/4/2018
Te
m
p
e
r
a
t
u
r
e

0C
Date
2018 Water Temperature -Tillery Development
Daily Average Temperature Daily Minimum Temperature Daily Maximum Temperature
9

Figure 4: Daily average, minimum, and maximum water temperatures downstream of the Blewett Falls Development (USGS Station No.
0212880025), May 1 - November 30, 2018
5.0
10.0
15.0
20.0
25.0
30.0
35.0
5/1/2018 6/1/2018 7/2/2018 8/2/2018 9/2/2018 10/3/2018 11/3/2018 12/4/2018
Te
m
p
e
r
a
t
u
r
e
,

0C
Date
2018 Water Temperature, Blewett Falls Development
Daily Average Temperature Daily Minimum Temperature Daily Maximum Temperature
10

Table 1: Daily average, minimum, and maximum DO and water temperature downstream of the Tillery
Development (USGS Station No. 0212378405) May 1 - November 30, 2018

Table 1: Tillery Development
Date Water Temperature oC Dissolved Oxygen, mg/L
Average Minimum Maximum N Average Minimum Maximum N
5/1/2018 Data Not Available Data Not Available
5/2/2018 Data Not Available Data Not Available
5/3/2018 Data Not Available Data Not Available
5/4/2018 Data Not Available Data Not Available
5/5/2018 Data Not Available Data Not Available
5/6/2018 Data Not Available Data Not Available
5/7/2018 Data Not Available Data Not Available
5/8/2018 20.0 18.3 21.3 36 10.0 6.5 11.8 34
5/9/2018 19.9 18.3 23.7 86 9.3 5.8 14.1 86
5/10/2018 19.5 18.1 23.5 96 9.3 6.2 14.9 95
5/11/2018 20.1 18.6 24.8 96 9.6 6.3 14.9 95
5/12/2018 20.8 18.8 25.6 96 9.2 5.8 14.4 96
5/13/2018 21.0 18.6 25.7 96 9.3 5.8 14.2 96
5/14/2018 19.8 18.8 23.8 96 8.1 5.6 13.7 96
5/15/2018 20.4 18.6 23.9 96 8.4 5.8 13.4 95
5/16/2018 20.2 18.7 23.4 96 8.6 5.9 13.4 96
5/17/2018 19.5 18.7 22.4 96 8.7 7.2 12.4 96
5/18/2018 19.5 19.0 20.8 96 7.4 6.1 10.4 96
5/19/2018 20.1 19.2 22.8 96 8.0 6.2 11.6 96
5/20/2018 20.5 19.6 21.1 96 7.9 6.9 9.9 96
5/21/2018 21.0 20.6 22.5 96 7.9 7.3 9.7 94
5/22/2018 21.4 20.9 24.0 96 8.5 7.9 10.3 95
5/23/2018 21.6 21.1 22.3 96 8.1 6.0 9.0 96
5/24/2018 22.2 21.8 23.6 95 7.8 5.6 9.6 94
5/25/2018 22.6 21.9 26.0 96 8.1 5.8 10.2 95
5/26/2018 22.8 22.0 25.7 96 8.3 6.9 10.9 96
5/27/2018 23.2 22.2 26.8 95 7.7 5.7 10.7 94
5/28/2018 23.1 22.5 24.7 95 7.8 5.6 10.2 92
5/29/2018 23.7 23.1 26.1 96 7.4 5.3 10.1 94
5/30/2018 23.6 22.8 26.7 95 7.0 6.0 9.7 95
5/31/2018 23.5 22.8 26.7 96 6.6 5.4 9.4 96
6/1/2018 23.7 23.2 26.3 96 6.4 5.1 8.8 96
6/2/2018 24.0 23.4 26.0 96 6.6 4.9 8.3 96
6/3/2018 24.2 23.8 25.3 96 6.5 5.1 7.6 96
6/4/2018 25.2 24.2 28.8 96 6.8 4.7 8.4 96
6/5/2018 24.5 24.2 26.0 96 6.2 4.9 8.2 96
6/6/2018 24.4 23.9 25.8 96 6.0 4.9 8.0 96
6/7/2018 25.4 24.5 29.0 96 6.5 5.1 8.5 96
6/8/2018 25.8 24.4 28.8 96 6.4 4.8 8.5 96
6/9/2018 25.4 24.2 28.9 96 6.5 4.7 8.6 96
6/10/2018 25.5 24.5 28.7 96 6.2 4.8 8.4 96
11

Table 1: Tillery Development
Date Water Temperature oC Dissolved Oxygen, mg/L
Average Minimum Maximum N Average Minimum Maximum N
6/11/2018 25.6 24.6 28.8 96 6.3 4.7 8.5 96
6/12/2018 25.6 25.0 26.6 96 5.7 4.5 7.1 96
6/13/2018 26.1 24.8 28.3 96 5.8 4.5 7.5 96
6/14/2018 26.0 25.0 29.3 96 5.8 4.6 7.7 96
6/15/2018 26.6 25.3 30.0 96 5.9 4.8 7.4 96
6/16/2018 26.6 24.9 29.8 96 6.0 4.5 7.5 96
6/17/2018 26.3 25.1 29.4 96 6.1 4.8 7.6 96
6/18/2018 26.3 25.3 29.4 96 5.9 4.8 7.8 96
6/19/2018 27.0 25.6 30.5 96 6.0 4.6 7.2 96
6/20/2018 27.4 25.8 31.0 96 5.9 4.4 7.1 96
6/21/2018 27.1 25.7 29.6 96 5.7 4.3 7.3 96
6/22/2018 27.0 25.8 29.8 96 5.6 4.3 7.5 96
6/23/2018 27.3 26.0 28.8 96 6.3 4.6 7.5 96
6/24/2018 27.5 26.0 30.4 96 5.9 4.5 7.1 96
6/25/2018 27.5 26.2 30.4 96 5.8 4.5 7.3 96
6/26/2018 27.3 26.2 29.7 96 5.7 4.4 7.4 96
6/27/2018 27.2 26.3 29.8 96 5.9 4.5 7.1 96
6/28/2018 27.6 26.3 30.8 96 5.7 4.4 7.0 96
6/29/2018 28.0 26.7 31.0 96 5.7 4.4 6.9 96
6/30/2018 27.8 26.5 30.7 96 5.8 4.6 7.2 96
7/1/2018 27.8 26.4 31.1 96 5.8 4.6 7.1 96
7/2/2018 27.7 26.4 30.4 96 6.1 4.4 7.5 96
7/3/2018 28.4 27.2 31.3 96 5.8 4.5 7.0 96
7/4/2018 28.9 27.5 30.8 96 5.9 4.5 6.9 96
7/5/2018 28.2 27.4 30.3 96 5.9 4.6 7.4 96
7/6/2018 28.9 27.2 31.9 96 6.0 4.7 7.0 96
7/7/2018 28.6 27.5 29.3 96 5.9 4.8 6.8 96
7/8/2018 28.6 27.2 30.9 96 5.9 4.7 6.6 96
7/9/2018 28.3 26.7 30.9 96 6.0 4.7 7.1 96
7/10/2018 28.1 26.4 31.1 96 5.8 4.5 7.2 96
7/11/2018 28.6 27.2 31.8 96 5.8 4.4 7.0 96
7/12/2018 28.6 27.4 31.5 96 5.8 4.7 7.2 96
7/13/2018 28.8 27.4 31.2 95 6.1 4.8 7.3 95
7/14/2018 28.5 27.4 31.4 96 5.9 4.8 7.4 96
7/15/2018 28.5 27.2 31.5 96 5.9 4.6 7.0 96
7/16/2018 28.3 27.3 30.3 96 5.9 4.5 7.2 96
7/17/2018 27.9 27.2 30.7 96 5.6 4.5 7.4 96
7/18/2018 28.4 27.4 31.3 96 5.8 4.5 7.2 96
7/19/2018 28.4 27.5 30.6 96 5.6 4.2 7.1 96
7/20/2018 28.2 27.2 30.0 96 5.9 4.4 7.1 96
7/21/2018 28.7 27.3 31.0 96 5.7 4.5 6.5 96
7/22/2018 28.2 27.2 30.9 96 5.6 4.6 6.9 96
7/23/2018 28.0 27.2 29.8 96 5.6 4.5 6.8 96
7/24/2018 28.2 27.6 30.0 96 5.8 4.6 7.0 96
7/25/2018 28.2 27.4 31.0 96 5.6 4.4 6.9 96
7/26/2018 28.5 27.5 31.4 96 5.7 4.4 7.3 96
7/27/2018 28.2 27.5 30.7 96 5.6 4.4 7.1 96
12

Table 1: Tillery Development
Date Water Temperature oC Dissolved Oxygen, mg/L
Average Minimum Maximum N Average Minimum Maximum N
7/28/2018 28.5 27.5 31.3 96 5.9 4.3 7.0 96
7/29/2018 28.7 27.9 31.1 96 5.7 4.5 6.7 96
7/30/2018 28.2 27.8 29.6 96 5.7 4.4 6.8 96
7/31/2018 28.0 27.6 29.6 96 5.4 4.5 6.4 95
8/1/2018 27.9 27.4 28.3 96 5.4 3.9 6.5 95
8/2/2018 28.1 27.7 28.4 96 5.6 4.0 8.0 95
8/3/2018 28.4 28.2 28.7 96 8.0 7.6 8.5 96
8/4/2018 28.0 27.7 28.4 96 8.4 8.2 8.6 96
8/5/2018 28.0 27.4 29.6 96 7.6 6.1 8.4 96
8/6/2018 27.5 27.3 27.8 96 7.6 6.9 8.3 96
8/7/2018 27.5 27.0 27.9 96 7.1 4.8 8.0 96
8/8/2018 27.6 27.4 28.1 96 7.6 7.2 8.3 95
8/9/2018 28.1 27.4 30.0 96 7.2 5.8 8.3 96
8/10/2018 27.9 27.7 28.2 96 7.2 6.2 7.8 96
8/11/2018 28.5 27.5 31.1 96 6.4 4.5 7.6 96
8/12/2018 28.4 27.0 31.5 96 6.1 4.3 7.6 96
8/13/2018 27.9 27.6 28.7 96 6.1 4.6 7.1 96
8/14/2018 28.0 27.7 29.3 96 6.5 5.4 7.4 95
8/15/2018 28.0 27.8 28.5 96 6.0 4.5 6.7 96
8/16/2018 28.6 27.8 31.7 96 6.2 4.5 7.6 95
8/17/2018 28.2 27.6 30.8 96 6.1 4.5 7.9 95
8/18/2018 27.8 27.3 29.8 96 6.0 4.8 8.3 96
8/19/2018 28.0 27.5 29.6 96 6.0 4.7 8.1 96
8/20/2018 28.1 27.5 30.4 96 6.0 4.7 8.2 96
8/21/2018 27.9 27.5 29.3 96 6.1 4.7 7.9 95
8/22/2018 27.7 27.2 29.5 96 6.0 4.8 8.0 96
8/23/2018 28.0 27.8 28.4 96 6.6 5.5 7.8 96
8/24/2018 27.8 27.5 28.0 96 6.4 5.3 7.5 96
8/25/2018 28.0 26.9 30.3 96 6.3 4.6 7.8 96
8/26/2018 27.7 26.5 30.7 96 6.2 4.6 8.1 96
8/27/2018 27.4 26.5 29.9 96 6.0 4.5 8.1 96
8/28/2018 27.6 26.7 30.6 96 6.0 4.8 8.0 96
8/29/2018 27.5 26.7 30.2 96 5.8 4.5 8.3 96
8/30/2018 28.0 27.0 31.2 96 6.2 4.5 8.3 96
8/31/2018 28.1 27.2 31.2 96 6.2 4.7 8.2 96
9/1/2018 28.9 27.5 31.4 96 6.3 4.7 8.4 96
9/2/2018 28.1 27.4 31.2 96 6.2 4.7 8.2 96
9/3/2018 28.3 27.3 30.8 96 6.1 4.7 8.2 96
9/4/2018 28.5 27.7 30.5 96 6.1 4.6 7.8 95
9/5/2018 28.6 27.8 30.7 96 6.1 4.6 7.7 96
9/6/2018 28.7 27.5 31.8 96 6.3 4.6 8.2 95
9/7/2018 28.8 27.7 31.5 96 6.5 4.6 8.2 96
9/8/2018 28.4 27.3 31.0 96 6.3 5.0 8.6 96
9/9/2018 28.3 27.6 30.9 96 6.0 4.5 8.0 96
9/10/2018 28.6 27.8 31.2 96 6.2 4.6 8.2 96
9/11/2018 28.3 28.0 28.9 96 6.5 4.8 7.4 96
9/12/2018 28.2 27.9 28.4 96 5.9 4.8 6.7 96
13

Table 1: Tillery Development
Date Water Temperature oC Dissolved Oxygen, mg/L
Average Minimum Maximum N Average Minimum Maximum N
9/13/2018 28.4 28.2 28.7 96 6.1 5.6 6.8 96
9/14/2018 28.0 27.6 28.4 96 6.9 6.6 7.2 96
9/15/2018 27.4 27.2 27.7 96 6.8 6.6 7.1 96
9/16/2018 26.9 26.3 27.2 96 7.2 6.4 9.4 96
9/17/2018 25.4 23.7 26.3 96 8.4 6.7 9.4 96
9/18/2018 25.1 24.8 25.4 95 8.9 8.6 9.1 95
9/19/2018 25.2 25.0 25.6 96 7.9 7.1 8.9 96
9/20/2018 25.8 25.1 28.5 96 6.9 6.3 7.7 96
9/21/2018 25.1 24.8 26.4 96 6.4 5.5 7.5 96
9/22/2018 25.0 24.4 25.4 96 6.5 5.8 7.2 96
9/23/2018 25.1 24.5 25.6 96 6.6 5.7 7.6 96
9/24/2018 25.4 25.2 25.8 96 6.3 5.4 7.7 96
9/25/2018 25.5 25.3 25.7 96 6.2 5.3 7.5 95
9/26/2018 25.2 24.9 26.3 96 5.6 4.7 7.4 96
9/27/2018 25.3 24.8 26.6 96 6.1 5.0 7.6 96
9/28/2018 25.1 24.7 26.3 96 6.4 5.5 7.9 96
9/29/2018 25.3 24.7 27.4 96 6.6 5.7 8.0 96
9/30/2018 25.2 24.7 27.0 96 6.5 5.7 8.2 96
10/1/2018 25.1 24.3 26.7 96 6.2 5.5 8.1 96
10/2/2018 25.0 24.4 26.5 96 6.0 5.4 8.0 96
10/3/2018 25.4 24.4 28.1 96 6.3 4.5 8.1 96
10/4/2018 25.5 24.5 28.2 96 6.3 5.0 8.5 96
10/5/2018 25.8 24.7 28.4 96 6.5 5.4 8.5 96
10/6/2018 25.6 25.1 27.8 96 6.1 5.2 8.7 96
10/7/2018 25.8 25.0 28.4 96 6.4 5.2 8.5 96
10/8/2018 25.6 25.1 27.6 96 5.9 4.9 8.4 96
10/9/2018 25.4 24.9 26.6 96 5.8 4.7 8.4 96
10/10/2018 25.1 25.0 25.3 96 5.3 4.4 6.9 96
10/11/2018 25.2 25.0 25.4 96 6.1 4.1 8.0 96
10/12/2018 25.1 24.7 25.4 96 7.3 6.0 8.7 96
10/13/2018 24.1 23.8 24.7 96 9.1 8.7 9.3 96
10/14/2018 23.5 22.6 23.8 96 8.7 6.3 9.2 96
10/15/2018 23.0 22.3 23.4 96 7.7 6.2 9.1 96
10/16/2018 22.9 22.5 23.1 96 8.0 6.6 8.3 96
10/17/2018 22.8 22.7 23.0 96 7.9 6.5 8.3 96
10/18/2018 22.4 21.6 22.7 96 7.8 6.6 8.6 96
10/19/2018 22.0 20.7 22.5 96 7.3 6.6 8.0 95
10/20/2018 22.0 21.7 22.2 96 7.0 6.5 8.1 96
10/21/2018 20.8 18.9 22.3 96 7.4 6.7 8.5 96
10/22/2018 20.7 19.4 21.4 95 7.2 6.5 8.4 95
10/23/2018 20.6 19.2 21.8 96 7.0 5.9 8.1 94
10/24/2018 20.2 18.7 20.7 95 6.8 5.9 7.8 95
10/25/2018 19.8 18.0 20.3 96 6.8 5.9 7.6 94
10/26/2018 19.8 19.4 20.1 96 6.8 6.4 7.0 95
10/27/2018 19.1 18.7 19.4 96 7.5 6.8 9.3 96
10/28/2018 18.3 17.9 18.7 96 8.0 6.9 9.6 95
10/29/2018 17.9 17.8 18.1 96 7.8 7.4 8.6 94
14

Table 1: Tillery Development
Date Water Temperature oC Dissolved Oxygen, mg/L
Average Minimum Maximum N Average Minimum Maximum N
10/30/2018 17.7 17.5 18.0 96 8.2 7.6 9.0 95
10/31/2018 17.5 17.3 17.9 96 8.4 7.7 8.8 94
11/1/2018 17.6 17.3 18.3 96 8.2 7.9 9.1 96
11/2/2018 17.4 17.3 17.6 96 7.9 7.7 8.1 96
11/3/2018 17.4 17.2 17.8 96 8.0 7.7 8.4 96
11/4/2018 17.4 17.2 17.6 100 8.2 8.0 8.4 100
11/5/2018 17.4 17.3 17.5 96 8.2 8.0 8.5 96
11/6/2018 17.2 17.0 17.5 96 8.3 8.1 8.5 96
11/7/2018 16.8 16.6 17.0 96 8.4 8.2 8.6 96
11/8/2018 16.5 16.4 16.9 96 8.3 8.1 8.4 96
11/9/2018 16.6 16.5 16.7 96 8.2 8.1 8.4 96
11/10/2018 16.5 16.2 16.8 96 8.6 8.1 9.0 96
11/11/2018 16.0 15.7 16.2 95 8.5 8.2 8.8 93
11/12/2018 15.6 15.3 15.7 96 8.4 8.1 8.5 94
11/13/2018 14.7 13.9 15.4 96 10.4 8.3 10.7 96
11/14/2018 13.8 13.6 13.9 96 11.0 10.7 11.1 96
11/15/2018 13.2 12.7 13.6 96 10.7 10.0 11.3 95
11/16/2018 12.6 12.5 12.7 96 11.2 10.7 11.4 95
11/17/2018 12.3 12.0 12.5 96 11.1 10.6 11.3 93
11/18/2018 11.6 11.3 12.0 94 10.8 10.7 11.0 91
11/19/2018 11.4 11.2 11.5 96 11.0 10.7 11.1 96
11/20/2018 11.5 11.2 11.9 96 11.1 10.8 12.9 96
11/21/2018 11.5 11.2 11.8 95 10.8 10.6 11.3 94
11/22/2018 11.2 11.0 11.6 96 10.6 10.5 10.8 93
11/23/2018 11.0 10.9 11.3 96 10.6 10.5 10.8 92
11/24/2018 10.9 10.8 11.2 95 10.7 10.4 10.9 91
11/25/2018 11.1 10.7 12.7 96 10.7 10.1 10.9 96
11/26/2018 10.7 10.7 10.8 96 10.4 10.0 10.8 96
11/27/2018 10.5 9.6 11.5 96 10.6 10.0 11.1 93
11/28/2018 10.1 9.0 11.3 95 10.6 10.1 11.1 92
11/29/2018 10.1 9.1 11.6 88 10.6 10.1 11.1 83
11/30/2018 10.1 9.8 11.2 96 10.5 10.1 11.1 96

15

Table 2: Daily average, minimum, and maximum DO (mg/L) and water temperature (oC) measured
downstream of the Blewett Falls Development (USGS Station No. 0212880025) May 1 - November 30,
2018

Table 2: Blewett Falls Development
Date Water Temperature oC Dissolved Oxygen, mg/L
Average Minimum Maximum N Average Minimum Maximum N
5/1/2018 17.7 17.3 18.6 96 8.9 8.5 10.0 96
5/2/2018 18.0 17.5 18.7 96 9.0 8.7 9.4 96
5/3/2018 18.5 17.9 19.2 96 9.0 8.6 9.6 96
5/4/2018 19.1 18.6 19.9 96 8.9 8.4 9.4 96
5/5/2018 19.1 18.8 19.6 96 8.6 8.4 8.9 96
5/6/2018 20.2 19.5 21.3 96 8.9 8.1 10.2 96
5/7/2018 20.4 19.8 21.0 96 8.9 8.3 9.8 96
5/8/2018 20.4 20.1 21.0 96 8.4 8.1 9.1 96
5/9/2018 20.9 20.5 21.8 96 8.5 7.8 9.4 96
5/10/2018 21.0 20.4 22.2 96 8.2 7.5 9.4 96
5/11/2018 22.1 21.3 23.0 96 8.6 7.8 9.6 96
5/12/2018 22.1 21.3 23.2 96 8.4 7.0 10.1 96
5/13/2018 22.1 21.4 23.0 96 8.4 7.5 9.8 96
5/14/2018 22.2 21.6 23.3 96 8.2 7.2 10.3 96
5/15/2018 23.1 22.2 23.6 96 8.4 7.2 9.6 96
5/16/2018 22.7 22.0 23.1 96 7.4 6.9 7.9 96
5/17/2018 23.0 22.1 23.5 96 7.7 7.2 8.1 96
5/18/2018 22.0 21.2 23.1 96 7.7 7.4 8.0 96
5/19/2018 21.3 21.1 21.6 96 7.2 6.9 7.7 96
5/20/2018 21.3 21.0 22.0 94 7.0 6.7 7.2 94
5/21/2018 21.3 21.0 21.6 96 7.6 7.1 7.9 96
5/22/2018 22.0 21.5 22.4 96 7.0 6.7 7.3 96
5/23/2018 22.8 22.2 23.7 96 7.3 6.9 8.2 96
5/24/2018 22.9 22.6 23.1 96 7.1 6.8 7.4 96
5/25/2018 23.1 23.0 23.4 96 7.2 7.0 7.6 96
5/26/2018 23.4 23.0 23.9 96 7.2 6.9 7.4 96
5/27/2018 23.8 23.6 24.0 96 7.0 6.7 7.3 96
5/28/2018 24.1 23.9 24.2 96 7.0 6.7 7.3 96
5/29/2018 23.9 23.7 24.2 96 7.2 6.9 7.7 96
5/30/2018 24.0 23.7 24.3 96 6.9 6.7 7.3 96
5/31/2018 24.6 24.2 25.1 96 6.8 6.4 7.3 96
6/1/2018 24.8 24.5 25.4 96 6.5 5.9 7.3 96
6/2/2018 25.5 24.8 26.6 96 7.1 6.2 8.6 96
6/3/2018 25.5 25.2 26.2 96 7.0 6.5 7.7 96
6/4/2018 25.7 25.2 26.6 96 7.2 6.6 8.0 96
6/5/2018 25.6 25.3 26.0 96 6.7 6.2 7.4 96
6/6/2018 25.7 25.4 26.4 96 6.8 6.1 8.3 96
6/7/2018 25.8 25.3 27.2 96 7.1 6.2 9.6 96
6/8/2018 26.0 25.8 26.2 96 6.4 5.8 7.2 96
6/9/2018 26.3 25.7 27.4 96 6.7 5.6 9.0 96
16

Table 2: Blewett Falls Development
Date Water Temperature oC Dissolved Oxygen, mg/L
Average Minimum Maximum N Average Minimum Maximum N
6/10/2018 26.7 26.1 27.4 96 6.8 5.3 8.6 96
6/11/2018 27.2 26.4 28.6 96 7.0 5.0 9.7 96
6/12/2018 27.3 27.0 27.6 95 6.9 5.9 7.3 95
6/13/2018 26.9 26.6 27.1 96 6.2 5.7 6.7 96
6/14/2018 26.6 26.0 27.8 96 6.5 5.4 8.3 96
6/15/2018 27.2 26.2 28.6 96 7.6 5.6 10.0 96
6/16/2018 27.4 26.8 27.9 96 7.4 5.4 8.5 96
6/17/2018 27.4 26.8 28.2 96 6.8 5.2 9.4 96
6/18/2018 28.5 27.5 30.2 96 7.4 6.1 10.5 96
6/19/2018 28.9 28.3 30.3 96 6.9 6.1 9.6 96
6/20/2018 29.1 28.6 30.1 96 7.2 5.9 9.7 96
6/21/2018 29.1 28.5 29.6 96 7.1 6.0 8.6 96
6/22/2018 28.8 28.4 29.4 96 6.6 5.5 8.1 96
6/23/2018 28.9 28.4 29.7 96 6.5 5.2 8.0 96
6/24/2018 29.2 28.8 29.9 96 6.6 5.6 7.9 96
6/25/2018 29.2 28.8 30.0 96 6.4 5.3 8.2 96
6/26/2018 29.2 28.9 29.6 96 6.5 5.2 7.6 96
6/27/2018 29.2 29.0 29.5 96 6.3 5.5 7.1 96
6/28/2018 29.2 28.8 29.7 96 6.8 5.9 8.4 96
6/29/2018 28.9 28.5 29.7 96 6.8 5.5 9.2 96
6/30/2018 28.9 28.4 29.6 96 6.4 5.2 8.0 96
7/1/2018 29.0 28.5 29.9 96 6.1 4.4 7.6 96
7/2/2018 29.4 28.8 30.1 96 6.1 5.2 7.2 96
7/3/2018 30.1 29.7 30.7 96 6.3 5.4 7.4 96
7/4/2018 30.3 29.9 30.6 96 6.1 5.1 6.9 96
7/5/2018 30.3 29.9 30.9 96 5.8 4.9 6.6 96
7/6/2018 30.2 29.8 30.6 96 6.0 5.2 7.1 96
7/7/2018 30.1 29.9 30.5 96 6.1 5.3 6.9 96
7/8/2018 29.6 29.4 29.9 96 6.4 5.7 7.0 96
7/9/2018 29.3 29.0 29.5 96 6.5 5.8 6.9 96
7/10/2018 29.2 28.7 29.9 96 7.2 6.2 8.6 96
7/11/2018 29.2 28.8 29.6 96 7.1 6.1 7.8 96
7/12/2018 29.0 28.6 29.7 96 7.3 6.3 9.0 96
7/13/2018 29.0 28.6 29.2 96 7.2 6.5 7.6 96
7/14/2018 29.0 28.8 29.4 96 7.0 5.8 8.4 96
7/15/2018 29.1 28.8 29.4 95 6.6 5.6 7.5 95
7/16/2018 29.1 28.8 29.4 96 6.1 5.1 7.0 96
7/17/2018 29.4 29.0 29.8 96 6.3 4.2 7.1 96
7/18/2018 29.4 29.2 29.7 96 6.1 5.5 6.8 96
7/19/2018 29.3 29.1 29.5 96 6.2 5.2 6.8 96
7/20/2018 29.2 29.1 29.3 96 6.0 5.4 6.5 96
7/21/2018 29.2 28.9 29.8 96 6.5 5.3 7.8 96
7/22/2018 29.0 28.9 29.3 96 6.4 6.0 7.3 96
7/23/2018 28.8 28.6 29.1 96 6.2 5.6 7.1 96
7/24/2018 28.7 28.6 28.9 96 6.3 5.7 7.1 96
7/25/2018 28.7 28.6 28.9 96 6.4 5.5 7.2 96
7/26/2018 28.7 28.4 28.9 96 6.5 6.1 6.9 96
17

Table 2: Blewett Falls Development
Date Water Temperature oC Dissolved Oxygen, mg/L
Average Minimum Maximum N Average Minimum Maximum N
7/27/2018 28.5 28.2 29.3 95 6.5 5.6 8.5 95
7/28/2018 28.6 28.1 29.4 96 6.6 5.1 8.4 96
7/29/2018 28.8 28.5 29.3 96 6.3 5.2 7.1 96
7/30/2018 28.8 28.6 29.0 96 6.2 5.4 7.0 96
7/31/2018 28.9 28.8 29.0 96 6.5 5.7 7.1 96
8/1/2018 28.9 28.7 29.0 96 6.6 6.0 7.0 96
8/2/2018 28.7 28.5 28.9 96 6.6 6.1 7.4 96
8/3/2018 28.1 27.8 28.6 96 6.4 5.9 6.7 96
8/4/2018 28.0 27.7 28.2 96 6.6 6.3 7.0 96
8/5/2018 27.7 27.5 28.0 96 7.0 6.8 7.3 96
8/6/2018 27.8 27.6 28.1 96 6.7 6.2 7.1 96
8/7/2018 28.0 27.6 28.7 96 6.4 5.9 7.4 96
8/8/2018 28.5 28.0 29.1 96 6.9 5.8 8.1 96
8/9/2018 28.8 28.5 29.3 96 7.3 6.5 8.1 96
8/10/2018 28.5 28.3 28.7 96 7.0 6.6 7.7 96
8/11/2018 28.9 28.4 29.4 96 6.6 6.1 7.6 96
8/12/2018 28.9 28.6 29.3 96 6.5 6.0 7.2 96
8/13/2018 28.9 28.7 29.2 96 6.9 6.5 7.2 96
8/14/2018 27.8 27.1 28.7 96 6.1 5.2 6.8 96
8/15/2018 27.7 27.2 28.2 96 5.7 5.2 6.2 96
8/16/2018 28.1 27.8 28.5 96 5.7 4.9 6.2 95
8/17/2018 28.6 28.1 29.4 96 6.3 5.0 7.8 96
8/18/2018 29.1 28.7 29.6 96 6.3 5.2 7.9 96
8/19/2018 29.2 29.0 29.3 96 6.5 5.1 7.4 96
8/20/2018 28.8 28.5 29.0 96 6.6 5.7 7.3 96
8/21/2018 28.3 28.1 28.6 96 5.7 5.2 6.5 96
8/22/2018 28.4 28.2 28.7 96 6.5 5.7 7.5 96
8/23/2018 28.0 27.8 28.4 96 6.7 6.5 7.0 96
8/24/2018 27.6 27.4 28.0 96 6.6 6.4 7.3 96
8/25/2018 27.6 27.4 28.0 96 7.2 6.8 7.8 96
8/26/2018 27.6 27.4 27.9 96 7.1 6.6 7.4 96
8/27/2018 27.5 27.2 28.0 96 6.8 5.7 8.1 96
8/28/2018 28.2 27.6 28.8 96 7.0 6.0 8.2 96
8/29/2018 28.4 28.2 28.8 95 6.7 5.9 7.9 95
8/30/2018 28.8 28.6 29.2 96 6.8 6.1 7.7 96
8/31/2018 29.1 28.8 29.6 96 7.0 6.2 8.4 96
9/1/2018 29.1 28.7 29.3 96 6.4 5.8 7.0 96
9/2/2018 28.9 28.6 29.5 96 6.5 5.6 7.6 96
9/3/2018 29.1 28.8 29.4 96 6.6 5.4 7.7 96
9/4/2018 29.1 28.8 29.6 96 6.4 4.9 8.0 96
9/5/2018 29.0 28.8 29.2 96 6.3 5.7 6.9 96
9/6/2018 29.1 28.9 29.8 96 6.6 5.2 7.8 96
9/7/2018 29.0 28.8 29.2 96 5.8 5.2 6.7 96
9/8/2018 29.0 28.8 29.3 96 5.9 5.1 6.9 96
9/9/2018 29.2 29.0 29.8 96 5.9 5.0 7.5 96
9/10/2018 29.1 29.0 29.4 96 5.7 5.0 7.0 96
9/11/2018 29.3 28.9 29.7 95 6.5 5.5 7.6 95
18

Table 2: Blewett Falls Development
Date Water Temperature oC Dissolved Oxygen, mg/L
Average Minimum Maximum N Average Minimum Maximum N
9/12/2018 28.8 28.5 29.0 96 6.5 6.2 7.1 96
9/13/2018 28.4 28.1 28.8 96 6.7 6.5 6.9 96
9/14/2018 27.4 26.8 28.1 95 7.1 6.8 7.5 95
9/15/2018 26.4 26.0 26.8 96 7.5 7.4 7.6 96
9/16/2018 25.5 24.6 26.0 96 7.6 6.8 7.8 96
9/17/2018 24.4 23.9 24.6 95 7.6 6.1 8.4 95
9/18/2018 24.4 24.0 25.8 96 8.1 7.1 8.5 96
9/19/2018 25.3 24.6 26.5 96 8.0 7.6 8.5 96
9/20/2018 25.3 24.9 26.0 95 6.3 5.4 7.5 95
9/21/2018 25.7 25.1 26.4 96 4.8 4.1 6.6 96
9/22/2018 26.2 25.6 27.0 96 5.4 4.3 6.7 96
9/23/2018 26.3 25.9 26.9 95 5.1 4.2 6.9 95
9/24/2018 26.3 26.0 26.8 96 5.8 4.9 7.1 96
9/25/2018 26.1 25.8 26.6 96 6.6 6.0 7.8 96
9/26/2018 26.2 25.7 26.8 95 7.5 6.8 8.3 95
9/27/2018 26.2 25.9 26.8 96 7.4 6.8 8.1 96
9/28/2018 26.1 25.8 26.6 96 7.5 6.9 8.1 96
9/29/2018 26.0 25.6 26.5 95 7.2 6.7 7.8 95
9/30/2018 25.6 25.1 26.3 96 7.1 6.6 7.8 96
10/1/2018 25.6 24.9 26.5 96 7.6 6.9 8.5 96
10/2/2018 25.5 25.0 26.1 95 7.4 6.9 8.0 95
10/3/2018 25.7 24.9 26.6 96 7.6 6.8 8.5 96
10/4/2018 26.0 25.2 27.0 96 7.8 6.8 9.1 96
10/5/2018 26.2 25.4 26.9 95 7.7 6.8 8.8 95
10/6/2018 26.2 25.8 26.9 96 7.1 5.8 7.9 96
10/7/2018 26.4 26.0 27.0 96 6.8 5.6 7.9 96
10/8/2018 26.3 25.8 26.9 95 6.8 6.1 7.5 95
10/9/2018 26.0 25.7 26.4 96 6.9 6.1 7.6 96
10/10/2018 25.8 25.6 25.9 96 7.0 6.6 7.5 96
10/11/2018 25.3 24.9 25.7 95 7.3 6.9 8.1 95
10/12/2018 24.5 23.9 25.2 96 8.0 7.6 8.5 96
10/13/2018 24.0 23.6 25.1 96 8.1 7.5 8.7 96
10/14/2018 23.5 23.1 24.3 95 8.4 7.7 9.0 95
10/15/2018 23.2 22.8 23.8 96 8.0 7.6 8.4 96
10/16/2018 22.8 22.6 23.1 96 7.7 7.5 8.2 96
10/17/2018 23.0 22.6 23.8 95 7.9 7.7 8.2 95
10/18/2018 22.6 22.2 23.1 94 8.1 7.6 8.7 94
10/19/2018 21.9 21.6 22.5 96 8.2 7.7 8.7 96
10/20/2018 21.6 21.4 21.9 95 8.0 7.3 8.5 95
10/21/2018 20.9 20.1 21.5 96 8.2 7.8 8.6 96
10/22/2018 19.9 19.3 20.8 96 8.5 7.7 9.3 96
10/23/2018 19.5 19.0 20.1 95 8.6 8.1 9.2 95
10/24/2018 19.2 18.6 20.1 96 8.8 8.2 9.3 96
10/25/2018 18.8 18.4 19.3 96 8.8 8.4 9.3 96
10/26/2018 18.2 17.8 18.6 95 8.9 8.7 9.1 95
10/27/2018 17.9 17.1 18.2 96 9.1 8.9 9.3 96
10/28/2018 16.8 16.5 17.3 96 9.6 9.3 9.8 96
19

Table 2: Blewett Falls Development
Date Water Temperature oC Dissolved Oxygen, mg/L
Average Minimum Maximum N Average Minimum Maximum N
10/29/2018 17.3 16.8 18.2 95 9.4 9.2 9.7 95
10/30/2018 17.0 16.6 17.6 96 9.2 9.0 9.3 96
10/31/2018 16.8 16.2 17.8 96 9.0 8.7 9.5 96
11/1/2018 17.1 16.7 17.6 95 9.2 9.0 9.4 95
11/2/2018 17.5 17.2 17.9 96 8.9 8.7 9.3 96
11/3/2018 17.4 17.0 18.1 96 9.1 8.9 9.3 96
11/4/2018 17.2 16.8 17.9 99 9.2 8.7 9.5 99
11/5/2018 17.1 17.0 17.4 96 9.1 8.8 9.5 96
11/6/2018 17.2 17.0 17.8 96 9.3 9.1 9.5 96
11/7/2018 17.2 16.8 17.8 95 9.3 9.1 9.5 95
11/8/2018 17.3 17.1 17.6 96 9.0 8.8 9.2 96
11/9/2018 17.1 16.8 17.3 96 8.9 8.7 9.2 96
11/10/2018 16.7 15.9 17.3 96 9.0 8.8 9.4 95
11/11/2018 15.7 15.4 16.4 96 9.3 9.1 9.6 96
11/12/2018 14.9 14.4 15.4 96 9.4 9.2 9.9 96
11/13/2018 13.8 13.0 14.5 95 10.3 9.6 11.0 95
11/14/2018 12.7 12.4 13.0 96 10.9 10.5 11.4 96
11/15/2018 12.2 11.7 12.4 96 10.9 10.4 11.3 96
11/16/2018 11.7 11.3 12.3 95 11.0 10.6 11.5 95
11/17/2018 11.2 10.6 11.6 96 11.3 11.0 11.6 96
11/18/2018 11.3 11.0 11.6 96 11.2 10.9 11.5 96
11/19/2018 11.6 11.3 12.3 95 10.7 10.5 11.0 95
11/20/2018 11.8 11.6 12.5 96 10.4 10.2 10.6 96
11/21/2018 11.8 11.3 13.0 96 10.3 10.1 10.6 96
11/22/2018 11.5 11.1 12.0 95 10.2 9.9 10.8 95
11/23/2018 11.1 10.8 11.4 96 10.3 10.0 10.8 96
11/24/2018 10.9 10.7 11.4 96 10.3 10.2 10.6 96
11/25/2018 10.8 10.5 11.3 95 10.6 10.3 10.8 95
11/26/2018 10.7 10.4 11.1 96 10.6 10.5 10.9 96
11/27/2018 10.5 9.9 11.2 96 10.6 10.4 10.9 96
11/28/2018 9.8 9.4 10.5 95 10.5 10.2 10.8 95
11/29/2018 9.5 9.1 10.1 96 10.7 10.4 11.0 96
11/30/2018 9.7 9.4 10.3 96 10.8 10.5 11.0 96
20

Table 3: Maintenance/calibration dates for USGS Water Quality Stations at the Tillery and Blewett
Falls Developments during the 2018 Water Quality Monitoring Season

Tillery Development: USGS Station No. 0212378405
Date Time Explanation
5/08/2018 14:16 EDT Sonde deployment
5/30/2018 10:27 EDT Calibration (sonde swap)
7/13/2018 9:16 EDT Replaced battery and calibration
10/05/2018 10:20 EDT
Sonde battery replaced and recorder record
removed
11/01/2018 16:37 EST Added a second battery to the system
12/03/2018 10:16 EST Removed sonde for the season
Blewett Falls Development: USGS Station No. 0212880025
Date Time Explanation
4/30/2018 14:21 EDT Sonde deployment
7/27/2018 9:15 EDT
Calibration (sonde swap) and battery
replaced
10/18/2018 11:20 EDT Calibration (sonde swap)
12/03/2018 14:01 EST Calibration check and sonde removal