Sampson (Bradford County)

Florida LAKEWATCH Water Chemistry Summary

Location: Latitude 29°55'40", Longitude 82°11'18"

Period of record: 9 sampling dates; April 16, 1999 to December 17, 1999

Surface area (LAKEWATCH): No data available.   Bathymetric Map

Lake Region (Griffith et al. 1997): Upper Santa Fe Flatwoods

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 Perched Lake and Prairies division of the Central Lake District.
 
 

Supplemental, unpublished water chemistry data, University of Florida.

Numbers reported below are the average for 5 months sampled:
 
pH
6.9
 Sulfate (mg/L)
37.7
Total alkalinity (mg/L as CaCO3)
9.3
 Calcium (mg/L)
12.6
Conductance (µS/cm @ 25 °C)
143
 Magnesium (mg/L)
5.7
Color (Pt-Co units)
66
 Sodium (mg/L)
11.9
Chloride (mg/L)
17.9
 Potassium (mg/L)
0.8
Silicon (mg/L)
1.6
    

Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average, and maximum value for the 9 months sampled:

 
Minimum
Average
Maximum
Long-term total phosphorus concentrations (µg/L)
12
25
40
Long-term total nitrogen concentrations (µg/L)
470
580
740
Long-term total chlorophyll concentrations (µg/L)
3.7
6.6
20.3
Long-term Secchi depth (ft)
2.0
5.1
8.3

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
Apr-16-99
40
660
6.7
2.0
May-21-99
33
640
4.3
4.1
Jun-19-99
39
650
6.7
3.5
Jul-17-99
27
530
3.7
6.1
Aug-20-99
13
530
6.3
5.4
Sep-17-99
26
740
20.3
3.5
Oct-29-99
19
540
3.7
8.3
Nov-20-99
12
470
3.7
7.7
Dec-17-99
17
500
4.5
5.0
         
1999 Average
25
580
6.6
5.1

 

Sampson (Bradford County)

Florida LAKEWATCH Aquatic Plant Summary

Aquatic plant data collected on June 24, 1999

Percent area covered with aquatic vegetation (PAC, %)
38
Percent of lake's volume filled with vegetation (PVI, %)
12
Average emergent plant biomass (kg wet wt/m2)
7.1
Average floating-leaved plant biomass (kg wet wt/m2)
2.8
Average submersed plant biomass (kg wet wt/m2)
5.5
Average width of emergent and floating-leaved zone (ft.)
164
Average lake depth (m)
2

 

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

Common Name Plant Species
Frequency (%)
pickerelweed Pontederia cordata
100
lemon bacopa Bacopa caroliniana
100
bald cypress Taxodium distichum
100
fragrant water-lily Nymphaea odorata
90
tapegrass Vallisneria americana
90
American lotus Nelumbo lutea
80
maidencane Panicum hemitomon
80
cat-tail Typha spp.
70
hydrilla Hydrilla verticillata
70
coontail Ceratophyllum demersum
50
southern naiad Najas guadalupensis
50
buttonbush Cephalanthus occidentalis
50
stonewort Nitella spp.
50
cone-spur bladderwort Utricularia gibba
40
Egyptian paspalidium Paspalidium geminatum
40
spatterdock Nuphar luteum
30
wax myrtle Myrica cerifera
30
willow Salix spp.
30
. Ludwigia spp.
30
slender spikerush Eleocharis baldwinii
20
banana-lily Nymphoides aquatica
20
water primrose Ludwigia octovalvis
20
common salvinia Salvinia rotundifolia
10
water-moss Fontinalis spp.
10
purple fanwort Cabomba pulcherrima
10
green algae Chlorphyta
10
swamp titi Cyrilla racemiflora
10
red maple Acer rubrum
10

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