Hanna (Hillsborough)

Location: Latitude 28°8'16", Longitude 82°26'46"

Period of record: 15 sampling dates; November 21, 1996 to December 8, 1998

Surface area : No data available.

Lake Region (Griffith et al. 1997): Land-O-Lakes

Geologic formation (Brooks 1981):

The geology is dominated by argillaceous to sandy impure limestone of the Tampa Formation.

Physiographic region (Brooks 1981):

The lake lies in the Land-O-Lakes subdivision of the Tampa Plain division of the Ocala Uplift District.

Other LAKEWATCH data available: Supplemental water chemistry

Supplemental, unpublished water chemistry data, University of Florida.

Data were collected September 27, 1998 at 1 location:

pH
8.9
Total alkalinity (mg/L as CaCO3)
106
Conductance (µS/cm @ 25 °C)
528
Color (Pt-Co units)
26
Chloride (mg/L)
61.8
   

Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average and maximum value for the 15 months sampled:

 
Minimum
Average
Maximum
Long-term total phosphorus concentrations (µg/L)
26
36
47
Long-term total nitrogen concentrations (µg/L)
720
1080
1560
Long-term total chlorophyll concentrations (µg/L)
5.0
25.0
57.3
Long-term Secchi depth (ft)
2.5
3.7
5.0

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-10-98
32
750
7.7
5.0
Dec-08-98
38
720
10.3
5.0
         
1998 Average
35
730
9
5