GREEN RIVER
08/15/2013

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Lake and Watershed

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Assessment Report Card



Total Phosphorus GOOD
Total Nitrogen GOOD
Chlorophyll-a GOOD
Alkalinity GOOD
Dissolved Oxygen GOOD
Lakeshore Disturbance GOOD
Lakeshore Habitat GOOD
Shallow Water Habitat GOOD
Physical Complexity of Habitat GOOD
Watershed Minimally Disturbed

For more information about how lakes are scored, see:
Gauging the health of Vermont Lakes: Results of the 2007 National Lake Assessment


Water Quality

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Click here to view additional profiles for GREEN RIVER | Click here to view Lake Score Card for GREEN RIVER

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NOTE: Hover mouse over chart elements to to view data values

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Condition Assessments

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Total Phosphorus: GOOD

Total Nitrogen: GOOD

Chlorophyll-a: GOOD

Alkalinity: GOOD

Dissolved Oxygen: GOOD

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Secchi Transparency

Temperature, Dissolved Oxygen, Chlorophyll-a

Total Phosphorus

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Total Nitrogen

Conductivity

Chloride

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pH

Calcium and Magnesium

Iron, Manganese and Aluminum

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Dissolved Organic Carbon

intentionally blank

intentionally blank


Habitat

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Habitat Map

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Assessments

Assessments based on habitat indexes developed by EPA’s National Lake Assessment program.

Habitat Comparisons

Comparison of the average habitat characteristics of sites around GREEN RIVER with the average habitat characteritics at undeveloped and developed sites at other lakes in the state.

Disturbances

Disturbance components that make up the Lakeshore Disturbance score. ‘1.0’ indicates disturbance occurs in the immediate shoreline plot. ‘0.5’ indicates the disturbance occurs in an area proximal to, but not within, the immediate shoreline plot.

Human Disturbance
Station Buildings Park Commercial Docks Crops Pasture Orchard Lawn Walls Landfill Roads Powerlines
A 0 0 0 0 0 0 0 0 0 0 0 0
B 0 0 0 0 0 0 0 0 0 0 0 0
C 0 0 0 0 0 0 0 0 0 0 0 0
D 0 0 0 0 0 0 0 0 0 0 0 0
E 0 0 0 0 0 0 0 0 0 0 0 0
F 0 0 0 0 0 0 0 0 0 0 0 0
G 0 0 0 0 0 0 0 0 0 0 0 0
H 0 0 0 0 0 0 0 0 0 0 0 0
I 0 0 0 0 0 0 0 0 0 0 0 0
J 0 0 0 0 0 0 0 0 0 0 0 0


Inlets

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Inlets Map

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Water Quality

Comments: Could not find evidence of Inlet 8 anywhere, so did not sample it. 8/15 TN samples not acidified until 8/16. At inlet 3, beaver dam stopped us from going up any further. Used paper map numbering of inlets to find which trib was where and then used Google Earth to pull Lat Long, then used converter https://www.fcc.gov/encyclopedia/degrees-minutes-seconds-tofrom-decimal-degrees to convert to decimal degrees. Inlets 5 and 6 were sampled where the lake was still influencing the water chemistry, could not get up creek enough to avoid that.

Analytical Data
InletNo TP
(ug/L) 		TN
(mg/L) 		TCl
(mg/L)
1 14.20 0.41 2
2 18.80 0.37 2
3 16.40 0.28 2
4 9.51 0.24 2
5 16.10 0.29 2
6 13.70 0.27 2
7 7.45 0.20 2
Hydrolab Data
InletNo Conductivity
uS/cm 		Turbidity
NTU 		Temp
C 		DO
mg/L 		DO
% 		pH
 Chla
(ug/L)
1 35 NA 17.25 7.68 84.3 6.68 1.8
2 29 NA 16.82 8.95 97.2 6.70 3.3
3 52 NA 17.80 7.00 77.6 6.40 1.1
4 21 NA 19.76 8.12 93.7 6.72 4.2
5 26 NA 21.50 7.69 91.8 6.46 4.4
6 29 NA 20.72 7.60 89.4 6.39 2.6
7 43 NA 13.49 9.20 92.1 6.90 0.3

Physical | Macrophytes

Sediment and Algae
InletNo Sediment Depth
(cm) 		Sediment Delta
(sq meters) 		Algae
%Cover
2 0 0 0.0
6 20 0 0.0
7 25 36 0.1
1 10 0 30.0
3 30 0 0.0
4 10 0 0.0
5 10 0 0.0
Aquatic Plants
InletNo Plants %Cover Dominant
Plant 1 		Dominant
Plant 2 		Dominant
Plant 3
2 0 NA NA NA
6 80 Najas sp. Brasenia schreberi Glyceria borealis
7 15 Potamogeton epihydrus NA NA
1 20 Potamogeton epihydrus Potamogeton spirillus Najas sp.
3 0 NA NA NA
4 0 NA NA NA
5 5 Potamogeton epihydrus Potamogeton spirillus Najas flexilis

Outlet

Characteristic Comment
Type ARTIFICIAL
Flow Strong riffle
Control Height (m) 90
Comments Morrisville Power and Light website says max height of dam is 90’


Protection Classification

GREEN RIVER Lake Protection Classification

Comments: NA

Category Score Feature Present
Wilderness Score 0 Beach 0
Wilderness-Like Score 8 Ledge 1
Bouldered Shore 0
Vegetation 1
Islands 1
Steep Slopes 0
Peaks 1
Scenic Bottom 0
Cliffs 0
# Total Features 4


Data

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Chemistry

Lakeshore and Littoral Habitat

Inlet Habitat