SLIDE 1
2018 Saw Kill Water Quality Update
Lindsey Drew, Bard Water Lab Manager
1-3 4 5 14 6 7 8 9 10 11 12
2018 Saw Kill Water Quality Update Lindsey Drew, Bard Water Lab - - PowerPoint PPT Presentation
2018 Saw Kill Water Quality Update Lindsey Drew, Bard Water Lab - - PowerPoint PPT Presentation
2018 Saw Kill Water Quality Update Lindsey Drew, Bard Water Lab Manager 1-3 Temperature 14 5 4 7 Conductivity 6 9 10 Turbidity Sewage Indicating 11 12 8 Bacteria Temperature is an important water quality Conductivity parameter
SLIDE 2
SLIDE 3
Temperature
Conductivity
pH
Aquatic & Plant Life Dissolved Oxygen
Temperature is an important water quality parameter that influences the physical and chemical properties
- f water
SLIDE 4 5 10 15 20 1 2 3 4 5 6 7 8 9 10 11 12 14
Sample Site Temperature (deg C)
10 20 30 1 2 3 4 5 6 7 8 9 10 11 12 14Sample Site Temperature (deg C)
Saw Kill Water Temperature 2017 Saw Kill Water Temperature 2018
The 2018 average temperature of the Saw Kill is higher than 2017
Brook Trout Brook Trout
SLIDE 5
Overall, the temperature of the Saw Kill is warming
10 20 30 1976−1982 2014−2018Temperature (deg C)
1976-1982 2014-2018 Saw Kill Water Temperature Brook Trout
SLIDE 6
Although, the temperature of the Saw Kill is warming there are solutions
10 20 30 1976−1982 2014−2018Temperature (deg C)
Solutions
- Maintaining and increasing
buffers
- Participated in Trees for Tribs
- Leave woody debris
- Reducing stagnant waters
1976-1982 2014-2018 Saw Kill Water Temperature Brook Trout
SLIDE 7
Conductivity is our indicator for salinity, road salt is a contaminant of concern
EPA Recommends Fresh Water Streams to be below 500 uS
https://www.thoughtco.com/chemical-composition-of-road-salt-609168
SLIDE 8
The conductivity
- f the Saw Kill
increases as you move from the head waters towards the mouth
Head Waters Mouth
200 400 600 800 1 2 3 4 5 6 7 8 9 10 11 12 14
Sample Site Conductivity (uS)
Saw Kill Conductivity 2018
SLIDE 9
The conductivity
- f the Saw Kill
has a slight decrease from 2016 to 2018
250 500 750 2016 2017 2018
Conductivity (uS)
2016 2017 2018 Saw Kill Conductivity
SLIDE 10
Turbidity is the measure of the amount
- f fine particles suspended in water
http://chasebc.ca/chase-living/turbidity/
SLIDE 11
5 10 1 2 3 4 5 6 7 8 9 10 11 12 14
Sample Site Turbidity NTU
The turbidity of the Saw Kill increases as you move from the head waters towards the mouth
Head Waters Mouth Saw Kill Water Turbidity 2018
SLIDE 12
5 10 2016 2017 2018
Turbidity (NTU)
2016 2017 2018
The 2018 average turbidity is higher than both 2016 and 2017
Saw Kill Water Turbidity
SLIDE 13
Enterococci and E. coli are important indicators of water contamination
EPA Beach Action Values Enterococci 60 CFU
- E. Coli
190 CFU
SLIDE 14
The 2018 average enterococci concentration is lower than 2017
1 2 3 1 2 3 4 5 6 7 8 9 10 11 12 14Sample Site log (CFU per 100 ml)
1 2 3 1 2 3 4 5 6 7 8 9 10 11 12 14Sample Site log (CFU per 100 ml)
2017 Enterococci Concentration By Site 2018 Enterococci Concentration By Site EPA BAV
SLIDE 15 1 2 3 2016 2017 2018
log (CFU per 100 ml)
2016 2017 2018
The concentration
- f enterococci in
the Saw Kill is decreasing between 2016 to 2018
Saw Kill Enterococci Concentration EPA BAV
SLIDE 16
Total Coliform Fecal Coliform
- E. Coli
Pathogenic
- E. Coli
https://www.berkeywater.com/news/e-coli-bacteria-explained/
Only a small percentage of E. coli are harmful
SLIDE 17
The 2018 average E. coli concentration is lower than 2017
1 2 1 2 3 4 5 6 7 8 9 10 11 12 14Sample Site log (CFU per 100 ml)
1 2 1 2 3 4 5 6 7 8 9 10 11 12 14Sample Site log (CFU per 100 ml)
2017 E. coli Concentration By Site 2018 E. coli Concentration By Site EPA BAV
SLIDE 18 1 2 3 2016 2017 2018
log (CFU per 100 ml)
2016 2017 2018
The concentration
- f E. coli in the
Saw Kill is decreasing between 2016 to 2018
Saw Kill E. coli Concentration EPA BAV
SLIDE 19
Next Sampling Friday December 14th
Email: ldrew@bard.edu if you’re interested