Crews (Highlands County)

Florida LAKEWATCH Water Chemistry Summary

Location: Latitude 27°17'47", Longitude 81°26'11"

Period of record: 44 sampling dates; March 17, 1996 to December 7, 1999

Surface area (LAKEWATCH): 63 acres / 25 hectacres    (Bathymetric Map)

Lake Region (Griffith et al. 1997): Lake Wales Ridge Transition

Geologic formation (Brooks 1981):

The geology is dominated by undifferentiated sand with humate zones and concentrations of heavy minerals of the Pliocene.

Physiographic region (Brooks 1981):

The water body lies in the Carlton Ranch Ridge division of the Southwestern Flatwoods District.

Supplemental, unpublished water chemistry data, University of Florida.

Numbers reported below are the average for 1 month sampled:
 
pH
5.8
 Sulfate (mg/L)
6.5
Total alkalinity (mg/L as CaCO3)
0.6
 Calcium (mg/L)
2.1
Conductance (µS/cm @ 25 °C)
64
 Magnesium (mg/L)
1.2
Color (Pt-Co units)
28
 Sodium (mg/L)
7.4
Chloride (mg/L)
14.7
 Potassium (mg/L)
0.6
Silicon (mg/L)
0.3
    

Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average, and maximum value for the 44 months sampled:

 
Minimum
Average
Maximum
Long-term total phosphorus concentrations (µg/L)
9
16
24
Long-term total nitrogen concentrations (µg/L)
340
450
610
Long-term total chlorophyll concentrations (µg/L)
4.0
6.7
15.0
Long-term Secchi depth (ft)
2.0
3.6
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
Jan-09-99
12
340
4.3
4.0
Feb-04-99
15
480
4.0
4.0
Mar-02-99
14
450
4.3
4.0
Apr-06-99
17
470
4.0
4.0
May-03-99
18
510
5.0
3.0
Jun-03-99
19
550
6.7
3.0
Jul-04-99
16
450
6.3
3.0
Aug-01-99
11
370
4.3
4.0
Sep-01-99
14
400
5.7
4.0
Oct-14-99
17
460
9.0
3.0
Nov-20-99
20
510
9.3
3.0
Dec-07-99
19
530
8.0
2.5
         
1999 Average
16
460
5.9
3.5

Crews (Highlands County)

Florida LAKEWATCH Aquatic Plant Summary

Aquatic plant data collected on July 25, 1996

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)
3.9
Average floating-leaved plant biomass (kg wet wt/m2)
2.7
Average submersed plant biomass (kg wet wt/m2)
0.2
Average width of emergent and floating-leaved zone (ft.)
130
Average lake depth (m)
3

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

Common Name Plant Species
Frequency (%)
slender spikerush Eleocharis baldwinii
100
spatterdock Nuphar luteum
100
pickerelweed Pontederia cordata
100
maidencane Panicum hemitomon
100
duck-potato Sagittaria lancifolia
90
fragrant water-lily Nymphaea odorata
80
red ludwigia Ludwigia repens
80
buttonbush Cephalanthus occidentalis
80
rush fuirena Fuirena scirpoidea
60
para grass Brachiaria mutica
50
wax myrtle Myrica cerifera
40
water primrose Ludwigia octovalvis
40
water-moss Fontinalis spp.
30
St. John's wort Hypericum spp.
30
alligator-weed Alternanthera philoxeroides
20
water spinach Ipomoea aquatica
20
cone-spur bladderwort Utricularia gibba
20
purple bladderwort Utricularia purpurea
20
Baldwin flat sedge Cyperus globulosus
20
common salvinia Salvinia rotundifolia
10
banana-lily Nymphoides aquatica
10
water-shield Brasenia schreberi
10
melaleuca Melaleuca quinquenervia
10
willow Salix spp.
10
sawgrass Cladium jamaicense
10
torpedograss Panicum repens
10
stonewort Nitella spp.
10

Back to c lakes page