Jeffery (St Lucie County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 27°32'54", Longitude 80°23'43"
Period of record: 12 sampling dates; March 5, 1991 to February 17, 1992
Surface area : No data available.
Lake Region (Griffith et al. 1997): Eastern Flatlands
Geologic formation (Brooks 1981):
The geology is a mixture of two major types dominated by high energy, bar shelly, and dune sand with loose to hard limestone of the Anastasia Formation and beach and dune sand and shell with silty sand, silt, and clay of the Princess Ann Formation.
Physiographic region (Brooks 1981):
The water body lies in the Sebastion-St. Lucie Flats division of the Eastern Flatwoods District.
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 12 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
8 |
18 |
38 |
|
Long-term total nitrogen concentrations (µg/L) |
510 |
690 |
810 |
|
Long-term total chlorophyll concentrations (µg/L) |
1.0 |
6.1 |
13.0 |
|
Long-term Secchi depth (ft) |
4.1 |
5.1 |
6.2 |
Florida LAKEWATCH data were not collected in 1999.
Jeffery (St Lucie County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on August 20, 1992
|
Percent area covered with aquatic vegetation (PAC, %) |
64 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
19 |
|
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) |
0.0 |
|
Average width of emergent and floating-leaved zone (ft.) |
4 |
|
Average lake depth (m) |
2 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
torpedograss |
Panicum repens |
80 |
|
musk-grass |
Chara spp. |
80 |
|
bacopa |
Bacopa monnieri |
60 |
|
rush fuirena |
Fuirena scirpoidea |
20 |
|
salt-bush |
Baccharis spp. |
10 |
|
melaleuca |
Melaleuca quinquenervia |
10 |
|
water primrose |
Ludwigia octovalvis |
10 |