Cay Dee (Orange County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°33'43", Longitude 81°20'44"
Period of record: 84 sampling dates; March 13, 1991 to December 30, 1999
Surface area (Shafer et al. 1986): 7 acres / 3 hectacres
Lake Region (Griffith et al. 1997): Orlando Ridge
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 Orlando Promontory division of the Central Lake District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 2 months sampled:
|
pH |
7.7 |
Sulfate (mg/L) |
9.3 |
|
Total alkalinity (mg/L as CaCO3) |
36.5 |
Calcium (mg/L) |
15.7 |
|
Conductance (µS/cm @ 25 °C) |
136 |
Magnesium (mg/L) |
1.5 |
|
Color (Pt-Co units) |
18 |
Sodium (mg/L) |
6.0 |
|
Chloride (mg/L) |
12.5 |
Potassium (mg/L) |
2.5 |
|
Silicon (mg/L) |
0.4 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 84 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
10 |
19 |
32 |
|
Long-term total nitrogen concentrations (µg/L) |
490 |
670 |
970 |
|
Long-term total chlorophyll concentrations (µg/L) |
2.0 |
9.7 |
42.7 |
|
Long-term Secchi depth (ft) |
3.5 |
7.4 |
13.3 |
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 |
|
Jan-30-99 |
21 |
610 |
8.0 |
9.0 |
|
Feb-28-99 |
23 |
800 |
18.7 |
5.0 |
|
Apr-18-99 |
17 |
630 |
6.0 |
7.0 |
|
May-31-99 |
19 |
720 |
12.7 |
6.5 |
|
Jun-27-99 |
18 |
750 |
16.7 |
6.0 |
|
Jul-31-99 |
16 |
730 |
11.3 |
6.5 |
|
Aug-29-99 |
13 |
640 |
6.0 |
8.9 |
|
Oct-31-99 |
25 |
590 |
10.0 |
6.7 |
|
Nov-27-99 |
22 |
670 |
6.3 |
8.2 |
|
Dec-30-99 |
20 |
790 |
5.3 |
9.8 |
|
|
|
|
|
|
|
1999 Average |
19 |
690 |
10.1 |
7.4 |
Cay Dee (Orange County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on August 18, 1992
|
Percent area covered with aquatic vegetation (PAC, %) |
12 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
2 |
|
Average emergent plant biomass (kg wet wt/m2) |
1.8 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
1.1 |
|
Average submersed plant biomass (kg wet wt/m2) |
1.6 |
|
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 (%) |
|
musk-grass |
Chara spp. |
100 |
|
spatterdock |
Nuphar luteum |
40 |
|
torpedograss |
Panicum repens |
30 |
|
banana-lily |
Nymphoides aquatica |
20 |
|
rush fuirena |
Fuirena scirpoidea |
20 |
|
slender spikerush |
Eleocharis baldwinii |
10 |
|
pickerelweed |
Pontederia cordata |
10 |
|
water-pennywort |
Hydrocotyle umbellata |
10 |
|
bald cypress |
Taxodium distichum |
10 |