Long Pond (Putnam County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 29°40'21", Longitude 81°59'45"
Period of record: 42 sampling dates; April 14, 1990 to June 28, 1998
Surface area (Shafer et al. 1986): 35 acres / 14 hectacres
Lake Region (Griffith et al. 1997): Trail Ridge
Geologic formation (Brooks 1981):
The geology is dominated by quartz sand and quartzite gravel with sandy clay beds of the Hawthorne Formation.
Physiographic region (Brooks 1981):
The water body lies in the Interlachen Sand Hills division of the Central Lake District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 1 month sampled:
|
pH |
4.6 |
Sulfate (mg/L) |
9.3 |
|
Total alkalinity (mg/L as CaCO3) |
0.0 |
Calcium (mg/L) |
1.8 |
|
Conductance (µS/cm @ 25 °C) |
64 |
Magnesium (mg/L) |
1.2 |
|
Color (Pt-Co units) |
3 |
Sodium (mg/L) |
4.2 |
|
Chloride (mg/L) |
8.4 |
Potassium (mg/L) |
0.2 |
|
Silicon (mg/L) |
0.1 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 42 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
1 |
4 |
7 |
|
Long-term total nitrogen concentrations (µg/L) |
20 |
80 |
210 |
|
Long-term total chlorophyll concentrations (µg/L) |
0.0 |
1.6 |
11.3 |
|
Long-term Secchi depth (ft) |
6.2 |
9.5 |
11.0 |
Florida LAKEWATCH data were not collected in 1999.
Long Pond (Putnam County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on May 20, 1992
|
Percent area covered with aquatic vegetation (PAC, %) |
26 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
4 |
|
Average emergent plant biomass (kg wet wt/m2) |
0.0 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
0.0 |
|
Average submersed plant biomass (kg wet wt/m2) |
0.1 |
|
Average width of emergent and floating-leaved zone (ft.) |
110 |
|
Average lake depth (m) |
2 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
slender spikerush |
Eleocharis baldwinii |
100 |
|
rush fuirena |
Fuirena scirpoidea |
100 |
|
bog-moss |
Mayaca fluviatilis |
60 |
|
cat-tail |
Typha spp. |
20 |
|
red root |
Lachnanthes caroliniana |
10 |