Poinsett (Brevard County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°20'24", Longitude 80°50'10"
Period of record: 2 sampling dates; February 18, 1993 to July 20, 1993
Surface area : No data available.
Lake Region (Griffith et al. 1997): Eastern Flatlands
Geologic formation (Brooks 1981):
The geology is dominated by 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 St. JohnÕs Wet Prairie division of the Eastern Flatwoods District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 4 months sampled:
|
pH |
7.8 |
Sulfate (mg/L) |
58.6 |
|
Total alkalinity (mg/L as CaCO3) |
62.5 |
Calcium (mg/L) |
58.5 |
|
Conductance (µS/cm @ 25 °C) |
785 |
Magnesium (mg/L) |
59.0 |
|
Color (Pt-Co units) |
98 |
Sodium (mg/L) |
111.0 |
|
Chloride (mg/L) |
204.3 |
Potassium (mg/L) |
4.4 |
|
Silicon (mg/L) |
4.4 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 2 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
39 |
49 |
59 |
|
Long-term total nitrogen concentrations (µg/L) |
1320 |
1350 |
1390 |
|
Long-term total chlorophyll concentrations (µg/L) |
9.3 |
12.3 |
15.3 |
|
Long-term Secchi depth (ft) |
3.5 |
3.5 |
3.5 |
Florida LAKEWATCH data were not collected in 1999.
Poinsett (Brevard County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on July 20, 1993
|
Percent area covered with aquatic vegetation (PAC, %) |
14 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
4 |
|
Average emergent plant biomass (kg wet wt/m2) |
5.0 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
4.4 |
|
Average submersed plant biomass (kg wet wt/m2) |
1.6 |
|
Average width of emergent and floating-leaved zone (ft.) |
979 |
|
Average lake depth (m) |
1 |
Frequency that plant species occur in 20 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
floating water-hyacinth |
Eichhornia crassipes |
90 |
|
coontail |
Ceratophyllum demersum |
85 |
|
smartweed |
Polygonum densiflorum |
85 |
|
cat-tail |
Typha spp. |
80 |
|
water-pennywort |
Hydrocotyle umbellata |
70 |
|
buttonbush |
Cephalanthus occidentalis |
70 |
|
willow |
Salix spp. |
70 |
|
soft stem bulrush |
Scirpus validus |
70 |
|
giant reed |
Arundo donax |
70 |
|
water-lettuce |
Pistia stratiotes |
60 |
|
common salvinia |
Salvinia rotundifolia |
60 |
|
hydrilla |
Hydrilla verticillata |
60 |
|
para grass |
Brachiaria mutica |
55 |
|
knot grass |
Paspalum distichum |
55 |
|
maidencane |
Panicum hemitomon |
40 |
|
alligator-weed |
Alternanthera philoxeroides |
35 |
|
spatterdock |
Nuphar luteum |
35 |
|
tapegrass |
Vallisneria americana |
25 |
|
southern naiad |
Najas guadalupensis |
25 |
|
pickerelweed |
Pontederia cordata |
20 |
|
water primrose |
Ludwigia octovalvis |
20 |
|
slender spikerush |
Eleocharis baldwinii |
15 |
|
Arrow root |
Thalia geniculata |
15 |
|
American lotus |
Nelumbo lutea |
10 |
|
Illinois pondweed |
Potamogeton illinoensis |
10 |
|
salt-bush |
Baccharis spp. |
10 |
|
common duckweed |
Lemna minor |
5 |
|
red ludwigia |
Ludwigia repens |
5 |
|
giant bulrush |
Scirpus californicus |
5 |
|
green algae |
Chlorphyta |
5 |
|
water spikerush |
Eleocharis elongata |
5 |
|
bald cypress |
Taxodium distichum |
5 |
|
Baldwin flat sedge |
Cyperus globulosus |
5 |