Johio (Orange)

Location: Latitude 28°34'40", Longitude 81°30'42"

Period of record: 13 sampling dates; May 29, 1997 to September 16, 1998

Surface area (Shafer et al. 1986): 28 acres / 11 hectacres

Lake Region (Griffith et al. 1997): Apopka Upland

Geologic formation (Brooks 1981):

The geology is dominated by phosphatic sand, silty sand, and clay of the Hawthorne Formation.

Physiographic region (Brooks 1981):

The lake lies in the Apopka Hills subdivision of the Apopka Upland division of the Central Lake District.

Other LAKEWATCH data available: No additional data available.

Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 13 months sampled:

 
Minimum
Average
Maximum
Long-term total phosphorus concentrations (µg/L)
6
7
11
Long-term total nitrogen concentrations (µg/L)
420
680
1020
Long-term total chlorophyll concentrations (µg/L)
1.0
3.1
11.7
Long-term Secchi depth (ft)
11.0
13.9
18.0

1998 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 3 mid-lake stations for total phosphorus (TP, µg/L),
total nitrogen (TN, µg/L), chlorophyll (CHL, µg/L) and Secchi depth (SECCHI, ft) during 1998:

Date
TP (µg/L)
TN (µg/L)
CHL (µg/L)
SECCHI (ft)
Jan-07-98
7
960
3.0
13.0
Feb-12-98
6
970
2.0
18.0
Mar-18-98
6
1020
2.0
16.0
Apr-16-98
6
1020
2.0
14.0
May-19-98
7
720
.
13.0
Jun-19-98
6
470
1.0
12.0
Aug-20-98
7
490
2.3
.
Sep-16-98
8
420
3.3
.
         
1998 Average
7
760
2.2
14.3