Little Keystone (Clay)

Location: Latitude 29°46'55", Longitude 82°2'8"

Period of record: 36 sampling dates; September 7, 1988 to March 23, 1998

Surface area (Shafer et al. 1986): 20 acres / 8 hectacres

Lake Region (Griffith et al. 1997): Trail Ridge

Geologic formation (Brooks 1981):

The geology is dominated by quartz sand and quartzite gravel with sandy clay beds of the Hawthorne Formation.

Physiographic region (Brooks 1981):

The lake lies in the Interlachen Sand Hills 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 36 months sampled:

 
Minimum
Average
Maximum
Long-term total phosphorus concentrations (µg/L)
6
14
27
Long-term total nitrogen concentrations (µg/L)
290
410
590
Long-term total chlorophyll concentrations (µg/L)
1.0
4.9
12.3
Long-term Secchi depth (ft)
2.0
8.2
13.7

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)
Feb-25-98
27
510
12.3
6.7
Mar-23-98
26
540
11.3
5.7
         
1998 Average
27
520
11.8
6.2