Crescent (Orange County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°30'30", Longitude 81°33'39"
Period of record: 19 sampling dates; June 9, 1998 to December 10, 1999
Surface area (Shafer et al. 1986): 172 acres / 70 hectacres
Lake Region (Griffith et al. 1997): Doctor Phillips 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 Apopka Hills subdivision of the Apopka Upland division of the Central Lake District.
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 19 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
6 |
14 |
19 |
|
Long-term total nitrogen concentrations (µg/L) |
470 |
600 |
700 |
|
Long-term total chlorophyll concentrations (µg/L) |
5.7 |
10.2 |
15.7 |
|
Long-term Secchi depth (ft) |
5.3 |
7.5 |
10.3 |
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-09-99 |
15 |
530 |
8.0 |
7.3 |
|
Feb-06-99 |
15 |
470 |
10.0 |
8.3 |
|
Mar-10-99 |
12 |
500 |
9.7 |
7.0 |
|
Apr-06-99 |
15 |
680 |
8.3 |
7.0 |
|
May-09-99 |
14 |
560 |
10.0 |
7.3 |
|
Jun-08-99 |
18 |
580 |
10.7 |
7.3 |
|
Jul-08-99 |
12 |
510 |
5.7 |
8.0 |
|
Aug-10-99 |
12 |
590 |
8.3 |
10.3 |
|
Sep-04-99 |
11 |
550 |
8.3 |
8.7 |
|
Oct-12-99 |
13 |
600 |
7.7 |
9.3 |
|
Nov-12-99 |
16 |
690 |
13.3 |
8.0 |
|
Dec-10-99 |
16 |
680 |
13.0 |
8.0 |
|
|
|
|
|
|
|
1999 Average |
14 |
580 |
9.4 |
8.1 |