McMeekin (Putnam County)

Florida LAKEWATCH Water Chemistry Summary

Location: Latitude 29°35'24", Longitude 82°0'30"

Period of record: 65 sampling dates; November 4, 1989 to December 15, 1999

Surface area (LAKEWATCH): 205 acres / 83 hectacres     Bathymetric Map

Lake Region (Griffith et al. 1997): Central Valley

Geologic formation (Brooks 1981):

The geology is dominated by quartz sand and quartzite gravel with sandy clay beds of the Hawthorne Formation.

Physiographic region (Brooks 1981):

The water body lies in the St. John’s 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Supplemental, unpublished water chemistry data, University of Florida.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
6.6
 Sulfate (mg/L)
6.9
Total alkalinity (mg/L as CaCO3)
2.8
 Calcium (mg/L)
2.3
Conductance (µS/cm @ 25 °C)
77
 Magnesium (mg/L)
1.8
Color (Pt-Co units)
19
 Sodium (mg/L)
8.0
Chloride (mg/L)
15.9
 Potassium (mg/L)
1.0
Silicon (mg/L)
0.3
    

Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average, and maximum value for the 65 months sampled:

 
Minimum
Average
Maximum
Long-term total phosphorus concentrations (µg/L)
13
23
39
Long-term total nitrogen concentrations (µg/L)
420
620
1510
Long-term total chlorophyll concentrations (µg/L)
2.0
12.4
67.3
Long-term Secchi depth (ft)
2.0
5.9
12.0

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-13-99
14
600
3.3
8.8
Feb-12-99
14
450
5.0
8.5
Mar-16-99
18
550
7.0
6.5
Apr-16-99
22
560
5.3
5.3
May-17-99
19
520
4.7
7.2
Jun-14-99
20
530
6.3
7.5
Jul-19-99
20
540
6.0
5.8
Aug-16-99
15
510
5.7
7.2
Sep-12-99
23
540
15.0
4.2
Oct-19-99
18
730
18.0
4.2
Nov-17-99
21
650
11.7
4.3
Dec-15-99
32
1060
8.3
5.5
         
1999 Average
20
600
8.0
6.2

McMeekin (Putnam County)

Florida LAKEWATCH Aquatic Plant Summary

Aquatic plant data collected on May 20, 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)
0.7
Average floating-leaved plant biomass (kg wet wt/m2)
0.3
Average submersed plant biomass (kg wet wt/m2)
0.0
Average width of emergent and floating-leaved zone (ft.)
4
Average lake depth (m)
3

Frequency that plant species occur in 10 evenly spaced transects around the lake.

Common Name Plant Species
Frequency (%)
water-pennywort Hydrocotyle umbellata
80
water primrose Ludwigia octovalvis
70
torpedograss Panicum repens
70
duck-potato Sagittaria lancifolia
50
smartweed Polygonum hydropiperoides
40
elephant-ear Colocasia esculenta
40
sawgrass Cladium jamaicense
40
soft rush Juncus effusus
40
large headed beak-rush Rhynchospora chalarocephala
40
red ludwigia Ludwigia repens
30
pickerelweed Pontederia cordata
30
spatterdock Nuphar luteum
20
maidencane Panicum hemitomon
20
cat-tail Typha spp.
10
buttonbush Cephalanthus occidentalis
10
willow Salix spp.
10

McMeekin (Putnam County)

Florida LAKEWATCH Aquatic Plant Summary

Aquatic plant data collected on June 30, 1998

Percent area covered with aquatic vegetation (PAC, %)
10
Percent of lake's volume filled with vegetation (PVI, %)
4
Average emergent plant biomass (kg wet wt/m2)
8.9
Average floating-leaved plant biomass (kg wet wt/m2)
0.7
Average submersed plant biomass (kg wet wt/m2)
0.0
Average width of emergent and floating-leaved zone (ft.)
11
Average lake depth (m)
3

Frequency that plant species occur in 10 evenly spaced transects around the lake.

Common Name Plant Species
Frequency (%)
duck-potato Sagittaria lancifolia
90
water primrose Ludwigia octovalvis
90
wax myrtle Myrica cerifera
80
alligator-weed Alternanthera philoxeroides
70
sawgrass Cladium jamaicense
70
maidencane Panicum hemitomon
70
buttonbush Cephalanthus occidentalis
50
water-pennywort Hydrocotyle umbellata
40
willow Salix spp.
40
water tupelo Nyssa aquatica
30
red maple Acer rubrum
30
pickerelweed Pontederia cordata
20
elephant-ear Colocasia esculenta
20
torpedograss Panicum repens
20
spatterdock Nuphar luteum
10
salt-bush Baccharis spp.
10
red root Lachnanthes caroliniana
10
leconte sedge Cyperus lecontei
10
elderberry Sambucus canadensis
10

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