Boll Green (Putnam County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 29°37'53", Longitude 81°50'19"
Period of record: 16 sampling dates; April 11, 1990 to December 29, 1991
Surface area (Shafer et al. 1986): 28 acres / 11 hectacres
Lake Region (Griffith et al. 1997): Trail Ridge
Geologic formation (Brooks 1981):
The geology is dominated by coastal sand and shelly silty sand of the preglacial Pleistocene.
Physiographic region (Brooks 1981):
The water body lies in the St. John’s Offset division of the Central Lake District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 2 months sampled:
|
pH |
6.3 |
Sulfate (mg/L) |
5.2 |
|
Total alkalinity (mg/L as CaCO3) |
2.2 |
Calcium (mg/L) |
2.0 |
|
Conductance (µS/cm @ 25 °C) |
61 |
Magnesium (mg/L) |
1.0 |
|
Color (Pt-Co units) |
7 |
Sodium (mg/L) |
7.0 |
|
Chloride (mg/L) |
12.2 |
Potassium (mg/L) |
1.0 |
|
Silicon (mg/L) |
0.8 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 16 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
5 |
7 |
8 |
|
Long-term total nitrogen concentrations (µg/L) |
160 |
240 |
370 |
|
Long-term total chlorophyll concentrations (µg/L) |
1.0 |
2.0 |
3.3 |
|
Long-term Secchi depth (ft) |
8.0 |
10.1 |
12.5 |
Florida LAKEWATCH data were not collected in 1999.
Boll Green (Putnam County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on July 16, 1991
|
Percent area covered with aquatic vegetation (PAC, %) |
34 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
5 |
|
Average emergent plant biomass (kg wet wt/m2) |
6.0 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
0.0 |
|
Average submersed plant biomass (kg wet wt/m2) |
2.3 |
|
Average width of emergent and floating-leaved zone (ft.) |
3 |
|
Average lake depth (m) |
4 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
bog-moss |
Mayaca fluviatilis |
100 |
|
slender spikerush |
Eleocharis baldwinii |
70 |
|
buttonbush |
Cephalanthus occidentalis |
60 |
|
maidencane |
Panicum hemitomon |
60 |
|
pickerelweed |
Pontederia cordata |
50 |
|
torpedograss |
Panicum repens |
50 |
|
water primrose |
Ludwigia octovalvis |
40 |
|
sawgrass |
Cladium jamaicense |
40 |
|
southern cutgrass |
Leersia hexandra |
40 |
|
water-pennywort |
Hydrocotyle umbellata |
30 |
|
cone-spur bladderwort |
Utricularia gibba |
10 |
|
elephant-ear |
Colocasia esculenta |
10 |
|
willow |
Salix spp. |
10 |
|
water spider orchid |
Habenaria repens |
10 |
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