Minnehaha (Orange County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°37'48", Longitude 81°21'18"
Period of record: 97 sampling dates; July 23, 1989 to November 30, 1999
Surface area (Shafer et al. 1986): 96 acres / 39 hectacres
Lake Region (Griffith et al. 1997): Orlando Ridge
Geologic formation (Brooks 1981):
The geology is a mixture of two major types dominated by phosphatic sand, silty sand, and clay of the Hawthorne Formation and coastal sand and shelly silty sand of the preglacial Pleistocene.
Physiographic region (Brooks 1981):
The water body lies in the Orlando Promontory division of the Central Lake District.
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 97 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
23 |
35 |
81 |
|
Long-term total nitrogen concentrations (µg/L) |
500 |
780 |
1900 |
|
Long-term total chlorophyll concentrations (µg/L) |
9.0 |
31.8 |
69.7 |
|
Long-term Secchi depth (ft) |
1.3 |
3.5 |
6.2 |
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-01-99 |
34 |
740 |
38.7 |
2.5 |
|
Feb-03-99 |
34 |
690 |
30.0 |
3.0 |
|
Mar-01-99 |
31 |
680 |
24.3 |
4.0 |
|
Mar-30-99 |
37 |
630 |
21.0 |
3.3 |
|
May-01-99 |
45 |
980 |
45.3 |
2.4 |
|
May-31-99 |
42 |
890 |
33.0 |
2.4 |
|
Jul-02-99 |
42 |
860 |
37.7 |
2.7 |
|
Jul-31-99 |
31 |
750 |
25.3 |
2.5 |
|
Sep-01-99 |
32 |
700 |
26.3 |
3.3 |
|
Oct-02-99 |
29 |
740 |
34.3 |
3.0 |
|
Nov-01-99 |
35 |
780 |
33.7 |
3.0 |
|
Nov-30-99 |
37 |
780 |
38.0 |
2.5 |
|
|
|
|
|
|
|
1999 Average |
36 |
770 |
32.3 |
2.9 |