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  Latest water reports and information...



PPA June 2017 Meeting

 

Water Report

 

  • Three samples taken for Total Phosphorous and Chlorophyll-a on 7/1, 7/29, 9/1.

    1. Deep spot:

 

Category

Total Phosphorous

ANC

Chlorophyll-a

Conductivity

pH

Secchi Disc

Turbidity

 

2016 Avg

8.31

2.9

3.52

23.58

6.50

2.85M

1.11

7/29/15

12.4

2.9

4.38

17.92

6.59

>3.1

1.43

7/31/14

7.0

2.0

3.14

16.85

6.28

n/a

1.33

7/30/13

8.5

1.4

3.79

16.00

6.26

2.5M

0.57

7/31/12

8.2

1.9

2.96

17.64

6.28

2.5M

0.82

7/30/11

11.0

1.3

5.32

15.95

6.20

2.5M

1.28

7/30/10

8.6

1.0

3.65

18.74

6.22

2.5M

0.59

7/31/09

8.7

1.5

1.97

18.19

6.22

2.5M

0.89

NH Median

12.0

4.8

4.58

40.00

6.60

3.7M

>10.0

 

 

2.      South Inlet – E.Coli level

3.      West Inlet – E. Coli level

 

  • Levels of Phosphorous and Chlorophyll-a in deep spot lower than 2015.

  • 2016 data points listed at bottom of page 2

  • E Coli testing cost increasing from $20 to $30 per test in 2017

 

Water Testing Category Definitions

 

Total Phosphorous

Limiting nutrient found in New Hampshire lakes.  The greater the phosphorous concentration in a lake, the greater the biological production (i.e. algae).  Phosphorous sources include septic system effluent, animal waste, lawn fertilizer, eroding roadways and construction sites.

 

Acid Neutralizing Capacity - ANC 

The ability to resist changes in pH by neutralizing the acidic input to the lake.  Historically, New Hampshire has had naturally low ANC waters because of the prevalence of granite bedrock.  Granite contains only a small amount of buffering elements such as calcium.

 

Chlorophyll-a

Green pigment found in algae.  Measure of chlorophyll-a indicative of algal abundance.  Count above 10 indicates undesirable reproduction of algae is occurring.

 

 

 

Conductivity

Numerical expression of the ability of water to carry an electrical current.  Counts above 40 may indicate abnormal amounts of metals, salts, and minerals in water.  Increasing conductivity trend generally indicates point source and/or non-point source of pollution are entering the lake.

 

pH  

Measure of lake acidity.  pH between 6.5 and 7.0 is ideal for the growth and reproduction of fish and other aquatic life. 

 

Secchi Disk Transparency

20 centimeter disk with alternating black and white quadrants lowered to bottom of lake.  Measurement taken of depth at which the disk can be seen.

 

Turbidity

Measure of the amount of suspended particles in water such as; clay, silt, and algae that cause light to be scattered and absorbed.

 





PPA Fall 2016 Meeting Water Report

Water Report

 

  • Three samples taken for Total Phosphorous and Chlorophyll-a on 7/1, 7/29, 9/1.
    1. Deep spot:

Category

Total Phosphorous

ANC

Chlorophyll-a

Conductivity

pH

Secchi Disc

Turbidity

7/1/16

7/29/16

9/2/16

9.25

10.50

2.2

3.5

3.98

3.70

27.9

21.9

6.30

6.18

>2.7M

1.35

1.34

7/29/15

12.4

2.9

4.38

17.92

6.59

>3.1

1.43

7/31/14

7.0

2.0

3.14

16.85

6.28

n/a

1.33

7/30/13

8.5

1.4

3.79

16.00

6.26

2.5M

0.57

7/31/12

8.2

1.9

2.96

17.64

6.28

2.5M

0.82

7/30/11

11.0

1.3

5.32

15.95

6.20

2.5M

1.28

7/30/10

8.6

1.0

3.65

18.74

6.22

2.5M

0.59

7/31/09

8.7

1.5

1.97

18.19

6.22

2.5M

0.89

NH Median

12.0

4.8

4.58

40.00

6.60

3.7M

>10.0

2.      South Inlet – E.Coli level

3.      West Inlet – E. Coli level

  • Levels of Phosphorous and Chlorophyll-a in deep spot lower than 2015.  Additional data points should give better indication of any issues.
  • Spike also occurred in 2011  

Water Testing Category Definitions

Total Phosphorous

Limiting nutrient found in New Hampshire lakes.  The greater the phosphorous concentration in a lake, the greater the biological production (i.e. algae).  Phosphorous sources include septic system effluent, animal waste, lawn fertilizer, eroding roadways and construction sites.

Acid Neutralizing Capacity - ANC 

The ability to resist changes in pH by neutralizing the acidic input to the lake.  Historically, New Hampshire has had naturally low ANC waters because of the prevalence of granite bedrock.  Granite contains only a small amount of buffering elements such as calcium.

Chlorophyll-a

Green pigment found in algae.  Measure of chlorophyll-a indicative of algal abundance.  Count above 10 indicates undesirable reproduction of algae is occurring.

Conductivity

Numerical expression of the ability of water to carry an electrical current.  Counts above 40 may indicate abnormal amounts of metals, salts, and minerals in water.  Increasing conductivity trend generally indicates point source and/or non-point source of pollution are entering the lake.

pH  

Measure of lake acidity.  pH between 6.5 and 7.0 is ideal for the growth and reproduction of fish and other aquatic life. 

Secchi Disk Transparency

20 centimeter disk with alternating black and white quadrants lowered to bottom of lake.  Measurement taken of depth at which the disk can be seen.

Turbidity

Measure of the amount of suspended particles in water such as; clay, silt, and algae that cause light to be scattered and absorbed.


PPA June 2016 Meeting Water Report

Water Report

 

  • Two samples taken on July 29, 2015
    1. Deep spot:

Category

Total Phosphorous

ANC

Chlorophyll-a

Conductivity

pH

Secchi Disc

Turbidity

7/29/15

12.4

2.9

4.38

17.92

6.59

>3.1

1.43

7/31/14

7.0

2.0

3.14

16.85

6.28

n/a

1.33

7/30/13

8.5

1.4

3.79

16.00

6.26

2.5M

0.57

7/31/12

8.2

1.9

2.96

17.64

6.28

2.5M

0.82

7/30/11

11.0

1.3

5.32

15.95

6.20

2.5M

1.28

7/30/10

8.6

1.0

3.65

18.74

6.22

2.5M

0.59

7/31/09

8.7

1.5

1.97

18.19

6.22

2.5M

0.89

NH Median

12.0

4.8

4.58

40.00

6.60

3.7M

>10.0

2.      South Inlet – E.Coli level >10

3.      West Inlet – No sample taken due to low water level

  • Increasing levels of Phosphorous and Chlorophyll-a in deep spot
  • Spike also occurred in 2011
  • Additional testing of deep spot in June and August to gather data points  

Water Testing Category Definitions

Total Phosphorous

Limiting nutrient found in New Hampshire lakes.  The greater the phosphorous concentration in a lake, the greater the biological production (i.e. algae).  Phosphorous sources include septic system effluent, animal waste, lawn fertilizer, eroding roadways and construction sites.

Acid Neutralizing Capacity - ANC 

The ability to resist changes in pH by neutralizing the acidic input to the lake.  Historically, New Hampshire has had naturally low ANC waters because of the prevalence of granite bedrock.  Granite contains only a small amount of buffering elements such as calcium.

Chlorophyll-a

Green pigment found in algae.  Measure of chlorophyll-a indicative of algal abundance.  Count above 10 indicates undesirable reproduction of algae is occurring.

Conductivity

Numerical expression of the ability of water to carry an electrical current.  Counts above 40 may indicate abnormal amounts of metals, salts, and minerals in water.  Increasing conductivity trend generally indicates point source and/or non-point source of pollution are entering the lake.

pH  

Measure of lake acidity.  pH between 6.5 and 7.0 is ideal for the growth and reproduction of fish and other aquatic life. 

Secchi Disk Transparency

20 centimeter disk with alternating black and white quadrants lowered to bottom of lake.  Measurement taken of depth at which the disk can be seen.

Turbidity

Measure of the amount of suspended particles in water such as; clay, silt, and algae that cause light to be scattered and absorbed.



From Sept 2013 meeting:

Water Report

 

  • Two samples taken on July 30, 2013
    1. Deep spot:

 

          Category

Total Phosphorous

ANC

Chlorophyll-a

Conductivity

PH

Secchi Disc

Turbidity

      

          7/30/13

8.5

1.4

3.79

16.00

6.26

2.5M

0.57

          7/31/12

8.2

1.9

2.96

17.64

6.28

2.5M

0.82

          7/30/11

11.0

1.3

5.32

15.95

6.20

2.5M

1.28

          7/30/10

8.6

1.0

3.65

18.74

6.22

2.5M

0.59

          7/31/09

8.7

1.5

1.97

18.19

6.22

2.5M

0.89

NH      Median

12.0

4.8

4.58

40.00

6.60

3.7M

 

 

  • Phosphorous reading at Deep Spot back to normal levels

 

2.       South Inlet – E.Coli level 20

3.       West Inlet – No sample taken due to low water level

 

  • VLAP monitor will conduct water testing every year for lakes testing only once per year.


    Water Testing Category Definitions

    Total Phosphorous

    Limiting nutrient found in New Hampshire lakes.  The greater the phosphorous concentration in a lake, the greater the biological production (i.e. algae).  Phosphorous sources include septic system effluent, animal waste, lawn fertilizer, eroding roadways and construction sites.

    Acid Neutralizing Capacity - ANC 

    The ability to resist changes in pH by neutralizing the acidic input to the lake.  Historically, New Hampshire has had naturally low ANC waters because of the prevalence of granite bedrock.  Granite contains only a small amount of buffering elements such as calcium.

    Chlorophyll-a

    Green pigment found in algae.  Measure of chlorophyll-a indicative of algal abundance.  Count above 10 indicates undesirable reproduction of algae is occurring.

    Conductivity

    Numerical expression of the ability of water to carry an electrical current.  Counts above 40 may indicate abnormal amounts of metals, salts, and minerals in water.  Increasing conductivity trend generally indicates point source and/or non-point source of pollution are entering the lake.

    pH  

    Measure of lake acidity.  pH between 6.0 and 7.0 is ideal for the growth and reproduction of fish and other aquatic life. 

    Secchi Disk Transparency

    20 centimeter disk with alternating black and white quadrants lowered to bottom of lake.  Measurement taken of depth at which the disk can be seen.

    Turbidity

    Measure of the amount of suspended particles in water such as; clay, silt, and algae that cause light to be scattered and absorbed. 


From Sept 2012 meeting:



From Summer 2011 samples:



From September 2009 meeting:

The water test report was read by Ralph and accepted. 

 Three samples were taken July 31, 2009.

 

1. Deep spot – Results were listed for Total Phosphorous only.  Ralph will contact the State and

    obtain the rest of the readings.

            2. South Inlet – E. Coli level <10

            3. West Inlet – E. Coli level 10

 

Consensus was that the water was in good condition this year.  Very little weeds but some thought the water was cloudy.  Dwayne White said the mountain runoff included a lot of iron that may have contributed to the cloudy water.