Charles (Marion County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 29°13'53", Longitude 81°54'29"
Period of record: 117 sampling dates; January 31, 1990 to December 23, 1999
Surface area (LAKEWATCH): 281 acres / 101 hectacres (Bathymetric Map)
Lake Region (Griffith et al. 1997): Central Valley
Geologic formation (Brooks 1981):
The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation.
Physiographic region (Brooks 1981):
The water body lies in the Lynne Karst 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Supplemental, unpublished water chemistry data, University of Florida.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 |
6.1 |
Sulfate (mg/L) |
4.4 |
|
Total alkalinity (mg/L as CaCO3) |
8.8 |
Calcium (mg/L) |
5.9 |
|
Conductance (µS/cm @ 25 °C) |
53 |
Magnesium (mg/L) |
2.4 |
|
Color (Pt-Co units) |
690 |
Sodium (mg/L) |
4.0 |
|
Chloride (mg/L) |
10.8 |
Potassium (mg/L) |
0.2 |
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 117 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
12 |
46 |
148 |
|
Long-term total nitrogen concentrations (µg/L) |
910 |
1540 |
2370 |
|
Long-term total chlorophyll concentrations (µg/L) |
0.0 |
4.9 |
29.3 |
|
Long-term Secchi depth (ft) |
0.5 |
1.5 |
8.0 |
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 |
|
Jan-14-99 |
44 |
1880 |
1.0 |
1.0 |
|
Feb-18-99 |
30 |
1610 |
1.0 |
1.0 |
|
Mar-16-99 |
32 |
1860 |
2.7 |
1.0 |
|
Apr-23-99 |
35 |
1840 |
3.0 |
1.0 |
|
May-26-99 |
34 |
1950 |
2.3 |
1.0 |
|
Jun-29-99 |
36 |
1640 |
2.0 |
1.5 |
|
Jul-14-99 |
34 |
1640 |
10.3 |
1.5 |
|
Aug-09-99 |
38 |
1660 |
19.7 |
1.0 |
|
Sep-22-99 |
30 |
1560 |
3.0 |
1.0 |
|
Oct-19-99 |
28 |
1440 |
4.7 |
1.8 |
|
Nov-17-99 |
25 |
1600 |
3.0 |
1.8 |
|
Dec-23-99 |
27 |
1540 |
3.0 |
1.5 |
|
|
|
|
|
|
|
1999 Average |
33 |
1690 |
4.6 |
1.3 |
Charles (Marion County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on June 16, 1992
|
Percent area covered with aquatic vegetation (PAC, %) |
0 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
0 |
|
Average emergent plant biomass (kg wet wt/m2) |
3.7 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
1.9 |
|
Average submersed plant biomass (kg wet wt/m2) |
0.0 |
|
Average width of emergent and floating-leaved zone (ft.) |
141 |
|
Average lake depth (m) |
2 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
maidencane |
Panicum hemitomon |
100 |
|
bald cypress |
Taxodium distichum |
100 |
|
spatterdock |
Nuphar luteum |
90 |
|
spider-lily |
Hymenocallis spp. |
60 |
|
sawgrass |
Cladium jamaicense |
50 |
|
water-pennywort |
Hydrocotyle umbellata |
30 |
|
buttonbush |
Cephalanthus occidentalis |
30 |
|
water primrose |
Ludwigia octovalvis |
20 |
|
willow |
Salix spp. |
20 |
|
smartweed |
Polygonum hydropiperoides |
10 |
|
lizard's-tail |
Saururus cernuus |
10 |
|
water hemlock |
Cicuta mexicana |
10 |
|
jointed flat sedge |
Cyperus haspan |
10 |
Charles (Marion County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on June 2, 1998
|
Percent area covered with aquatic vegetation (PAC, %) |
4 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
2 |
|
Average emergent plant biomass (kg wet wt/m2) |
3.8 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
2.7 |
|
Average submersed plant biomass (kg wet wt/m2) |
0.0 |
|
Average width of emergent and floating-leaved zone (ft.) |
107 |
|
Average lake depth (m) |
1 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
bald cypress |
Taxodium distichum |
100 |
|
maidencane |
Panicum hemitomon |
90 |
|
spatterdock |
Nuphar luteum |
80 |
|
wax myrtle |
Myrica cerifera |
70 |
|
spider-lily |
Hymenocallis spp. |
60 |
|
knot grass |
Paspalum distichum |
40 |
|
water-pennywort |
Hydrocotyle umbellata |
30 |
|
buttonbush |
Cephalanthus occidentalis |
30 |
|
sawgrass |
Cladium jamaicense |
30 |
|
red maple |
Acer rubrum |
20 |
|
cat-tail |
Typha spp. |
10 |
|
salt-bush |
Baccharis spp. |
10 |
|
soft rush |
Juncus effusus |
10 |
|
elderberry |
Sambucus canadensis |
10 |