Smith (Marion County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 29°3'31", Longitude 81°59'31"
Period of record: 114 sampling dates; June 24, 1990 to December 6, 1999
Surface area (Shafer et al. 1986): 358 acres / 145 hectacres
Lake Region (Griffith et al. 1997): Lake Weir/Leesburg Upland
Geologic formation (Brooks 1981):
The geology is dominated by phosphatic sand, silty sand, and clay of the Hawthorne Formation.
Physiographic region (Brooks 1981):
The water body lies in the Central Lakes divisions of the Central Lake District and in the Anthony Hills subdivision of the Marion Hills division of the Ocala Uplift District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 5 months sampled:
|
pH |
5.7 |
Sulfate (mg/L) |
10.1 |
|
Total alkalinity (mg/L as CaCO3) |
1.4 |
Calcium (mg/L) |
2.6 |
|
Conductance (µS/cm @ 25 °C) |
71 |
Magnesium (mg/L) |
4.5 |
|
Color (Pt-Co units) |
10 |
Sodium (mg/L) |
7.1 |
|
Chloride (mg/L) |
12.8 |
Potassium (mg/L) |
0.9 |
|
Silicon (mg/L) |
0.0 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 114 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
4 |
9 |
16 |
|
Long-term total nitrogen concentrations (µg/L) |
410 |
610 |
870 |
|
Long-term total chlorophyll concentrations (µg/L) |
1.0 |
3.5 |
7.7 |
|
Long-term Secchi depth (ft) |
3.4 |
7.3 |
13.8 |
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-27-99 |
9 |
650 |
3.0 |
8.4 |
|
Feb-25-99 |
11 |
670 |
2.7 |
5.4 |
|
Mar-09-99 |
12 |
690 |
4.0 |
4.7 |
|
Apr-20-99 |
11 |
600 |
3.7 |
4.7 |
|
May-05-99 |
11 |
610 |
5.0 |
5.7 |
|
Jun-14-99 |
9 |
640 |
4.7 |
6.6 |
|
Jul-06-99 |
10 |
640 |
5.7 |
7.0 |
|
Aug-23-99 |
8 |
680 |
5.7 |
5.9 |
|
Sep-07-99 |
9 |
700 |
4.7 |
7.3 |
|
Oct-19-99 |
9 |
670 |
4.7 |
7.0 |
|
Nov-20-99 |
8 |
650 |
3.0 |
7.3 |
|
Dec-06-99 |
7 |
660 |
3.7 |
7.0 |
|
|
|
|
|
|
|
1999 Average |
10 |
650 |
4.2 |
6.4 |
Smith (Marion County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on May 19, 1992
|
Percent area covered with aquatic vegetation (PAC, %) |
56 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
7 |
|
Average emergent plant biomass (kg wet wt/m2) |
1.2 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
1.5 |
|
Average submersed plant biomass (kg wet wt/m2) |
2.5 |
|
Average width of emergent and floating-leaved zone (ft.) |
21 |
|
Average lake depth (m) |
2 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
lemon bacopa |
Bacopa caroliniana |
100 |
|
maidencane |
Panicum hemitomon |
100 |
|
Florida bladderwort |
Utricularia floridana |
100 |
|
bladderwort |
Utricularia foliosa |
100 |
|
purple bladderwort |
Utricularia purpurea |
90 |
|
slender spikerush |
Eleocharis baldwinii |
80 |
|
bog-moss |
Mayaca fluviatilis |
70 |
|
banana-lily |
Nymphoides aquatica |
60 |
|
water-shield |
Brasenia schreberi |
40 |
|
fragrant water-lily |
Nymphaea odorata |
40 |
|
variableleaf pondweed |
Potamogeton diversifolius |
40 |
|
hydrilla |
Hydrilla verticillata |
30 |
|
spatterdock |
Nuphar luteum |
20 |
|
water-moss |
Fontinalis spp. |
20 |
|
rush fuirena |
Fuirena scirpoidea |
20 |
|
cat-tail |
Typha spp. |
10 |
Smith (Marion County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on May 24, 1994
|
Percent area covered with aquatic vegetation (PAC, %) |
42 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
6 |
|
Average emergent plant biomass (kg wet wt/m2) |
2.9 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
0.2 |
|
Average submersed plant biomass (kg wet wt/m2) |
1.3 |
|
Average width of emergent and floating-leaved zone (ft.) |
27 |
|
Average lake depth (m) |
2 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
bacopa |
Bacopa monnieri |
100 |
|
bog-moss |
Mayaca fluviatilis |
100 |
|
maidencane |
Panicum hemitomon |
100 |
|
slender spikerush |
Eleocharis baldwinii |
90 |
|
banana-lily |
Nymphoides aquatica |
90 |
|
water-pennywort |
Hydrocotyle umbellata |
80 |
|
salt-bush |
Baccharis spp. |
60 |
|
rush fuirena |
Fuirena scirpoidea |
50 |
|
wax myrtle |
Myrica cerifera |
40 |
|
St. John's wort |
Hypericum spp. |
40 |
|
red root |
Lachnanthes caroliniana |
40 |
|
duck-potato |
Sagittaria lancifolia |
30 |
|
spatterdock |
Nuphar luteum |
30 |
|
red ludwigia |
Ludwigia repens |
30 |
|
willow |
Salix spp. |
30 |
|
Florida bladderwort |
Utricularia floridana |
20 |
|
elderberry |
Sambucus canadensis |
20 |
|
pickerelweed |
Pontederia cordata |
10 |
|
dwarf arrowhead |
Sagittaria subulata |
10 |
|
yellow-eyed grass |
Xyris spp. |
10 |