South Talmadge (Volusia County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 29°2'20", Longitude 81°15'52"
Period of record: 30 sampling dates; July 16, 1991 to December 19, 1999
Surface area (Shafer et al. 1986): 60 acres / 24 hectacres
Lake Region (Griffith et al. 1997): Eastern Flatlands
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. JohnÕs Offset 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Supplemental, unpublished water chemistry data, University of Florida.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 |
6.8 |
Total alkalinity (mg/L as CaCO3) |
15.0 |
|
Conductance (µS/cm @ 25 °C) |
123 |
Color (Pt-Co units) |
126 |
|
Chloride (mg/L) |
18.5 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 30 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
16 |
24 |
37 |
|
Long-term total nitrogen concentrations (µg/L) |
830 |
1190 |
1570 |
|
Long-term total chlorophyll concentrations (µg/L) |
7.3 |
23.1 |
75.3 |
|
Long-term Secchi depth (ft) |
2.5 |
4.1 |
6.0 |
1999 Florida LAKEWATCH Data
Numbers reported below are monthly averages calculated from 3 stations for total phosphorus (TP, µg/L), total nitrogen (TN, µg/L), chlorophyll (CHL, µg/L) and Secchi depth (SECCHI, ft) during 1999:
|
Date |
TP (µg/L) |
TN (µg/L) |
CHL (µg/L) |
SECCHI (ft |
|
Oct-09-99 |
17 |
990 |
10.7 |
3.6 |
|
Nov-13-99 |
18 |
1090 |
12.7 |
3.3 |
|
Dec-19-99 |
20 |
1190 |
14.0 |
4.5 |
|
|
|
|
|
|
|
1999 Average |
18 |
1090 |
12.4 |
3.8 |
South Talmadge (Volusia County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on July 30, 1992
|
Percent area covered with aquatic vegetation (PAC, %) |
6 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
5 |
|
Average emergent plant biomass (kg wet wt/m2) |
5.1 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
3.4 |
|
Average submersed plant biomass (kg wet wt/m2) |
0.9 |
|
Average width of emergent and floating-leaved zone (ft.) |
56 |
|
Average lake depth (m) |
2 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
spatterdock |
Nuphar luteum |
90 |
|
pickerelweed |
Pontederia cordata |
70 |
|
cat-tail |
Typha spp. |
50 |
|
water primrose |
Ludwigia octovalvis |
50 |
|
floating water-hyacinth |
Eichhornia crassipes |
40 |
|
bladderwort |
Utricularia foliosa |
40 |
|
slender spikerush |
Eleocharis baldwinii |
30 |
|
sedge family |
Cyperaceae |
30 |
|
maidencane |
Panicum hemitomon |
30 |
|
red root |
Lachnanthes caroliniana |
30 |
|
purple bladderwort |
Utricularia purpurea |
20 |
|
elephant-ear |
Colocasia esculenta |
20 |
|
southern water-grass |
Hydrochloa caroliniensis |
20 |
|
common salvinia |
Salvinia rotundifolia |
10 |
|
alligator-weed |
Alternanthera philoxeroides |
10 |
|
water-pennywort |
Hydrocotyle umbellata |
10 |
|
sawgrass |
Cladium jamaicense |
10 |
|
annual spikrush |
Eleocharis geniculata |
10 |