MOLLYS FALLS
07/29/2015

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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 POOR
Physical Complexity of Habitat FAIR
Watershed Moderately 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 MOLLYS FALLS | Click here to view Lake Score Card for MOLLYS FALLS

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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 MOLLYS FALLS 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 1 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: Water level looks to be down 1’, see line on phragmites. Not sure if that line is when the reservoir is full. All inlets show evidence of streambed in the littoral zone for when the water level is down and the stream flows through the littoral zone. Inlets seem to split deltas in half with deep channel down the middle.

Analytical Data
InletNo TP
(ug/L) 		TN
(mg/L) 		TCl
(mg/L)
1 7.19 0.30 2.21
2 9.15 0.20 4.93
3 7.19 0.30 2.21
4 7.19 0.30 2.21
5 9.10 0.17 2.00
7 14.30 0.33 2.00
8 9.77 0.23 2.83
9 8.31 0.90 16.16
10 8.45 0.14 27.33
11 9.99 0.25 7.40
12 12.50 0.29 7.63
13 8.43 0.20 10.41
14 35.60 0.41 2.42
Hydrolab Data
InletNo Conductivity
uS/cm 		Turbidity
NTU 		Temp
C 		DO
mg/L 		DO
% 		pH
 Chla
(ug/L)
1 110 0 16.17 9.59 NA 7.61 0.77
2 152 0 18.30 8.91 NA 7.54 1.16
3 110 0 16.17 9.59 NA 7.61 0.77
4 110 0 16.17 9.59 NA 7.61 0.77
5 101 0 16.91 9.30 NA 7.50 0.75
7 124 0 15.73 9.38 NA 7.31 0.98
8 55 0 22.31 8.51 NA 7.11 2.36
9 115 0 14.13 9.96 NA 7.56 0.23
10 180 0 22.91 7.72 NA 7.40 1.35
11 99 0 24.26 7.21 NA 6.72 2.56
12 103 0 21.08 7.25 NA 6.68 3.50
13 119 0 18.30 8.44 NA 7.05 1.28
14 141 0 17.92 8.74 NA 7.42 1.22

Physical | Macrophytes

Sediment and Algae
InletNo Sediment Depth
(cm) 		Sediment Delta
(sq meters) 		Algae
%Cover
7 60 20 0
8 40 200 3
9 5 0 0
10 30 10 25
11 40 0 40
12 40 0 30
13 25 0 0
14 10 0 0
1 25 25 5
2 30 15 2
3 20 0 1
4 35 250 20
5 NA NA NA
Aquatic Plants
InletNo Plants %Cover Dominant
Plant 1 		Dominant
Plant 2 		Dominant
Plant 3
7 25 Pontederia cordata Potamogeton amplifolius Potamogeton epihydrus
8 40 Sagittaria sp. Sparganium sp. Sparganium sp.
9 10 Vallisneria americana Potamogeton spirillus Sparganium sp.
10 50 Vallisneria americana Najas sp. NA
11 60 Potamogeton spirillus Najas sp. NA
12 60 Vallisneria americana Potamogeton spirillus Najas sp.
13 10 Vallisneria americana Sagittaria sp. Fontinalis sp.
14 5 Vallisneria americana Fontinalis sp. Potamogeton spirillus
1 10 Sagittaria sp. Potamogeton amplifolius Najas sp.
2 30 Phragmites australis Potamogeton epihydrus Sagittaria sp.
3 10 Sagittaria sp. Phragmites australis ssp. americana Sparganium sp.
4 50 Sagittaria sp. Potamogeton spirillus NA
5 NA NA NA NA

Outlet

Characteristic Comment
Type ARTIFICIAL
Flow NA
Control Height (m) 3
Comments Dam is too big to measure, boards raise water level approx 10’ while we were there


Protection Classification

MOLLYS FALLS Lake Protection Classification

Comments: Not a natural or natural like outlet, so not Wilderness-like. Dam, access, house and Route 2 detract from Wilderness-like Scenery and quiet.

Can see Camel’s Hump from the lake.

Category Score Feature Present
Wilderness Score 0 Beach 1
Wilderness-Like Score 0 Ledge 0
Bouldered Shore 1
Vegetation 0
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