Lake County Water Atlas

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Lake Joanna

Joanna, Lake


located within Ocklawaha River Watershed


Explore general as well as scientific information about the movement, chemistry and biology of area surface water environments.

The data on this page indicate how fast the water is moving and how deep the water is on this water resource.

Click the Learn More links to explore each parameter and how it indicates Hydrology.

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Map Legend

Water Quality sampling site
Hydrology sampling site
Closest Rainfall site
Rainfall sampling site
Multi-type sampling site
Other sampling site

Water Levels

Water levels typically follow rainfall patterns during periods of wet weather and drought. From these data, one can get a picture of how recent flood or drought events compare to historical data. Learn more about lake water levels »

No data available

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Bathymetric Maps and Depth Information

These are the latest available contour maps of the lake's bottom. These maps can be used to determine where "holes" (deep spots) exist on the lake bottom. Such areas are often productive for fishing. Learn more about bathymetric maps »

View Map Details Method Lake Elevation
View Contour Map
Date: 8/2/2000
DGPS_SONAR 155.41 ft. ()
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    Additional Hydrology and Geology Information

    The Lake Region Classification System is a tool used for grouping lakes based on similarities in physiography, geology, soils, hydrology, water chemistry, vegetation, and climate. It was created from a cooperative effort involving the United States Environmental Protection Agency, the Florida Department of Environmental Protection, and researchers at the University of Florida's Department of Fisheries and Aquatic Sciences. There are a total of 47 Lake Region groups. These are used to provide a framework of the different types of lakes in the state so that management plans can be developed for groups of lakes with similar characteristics. Learn more about Florida Lake Regions »

    The lake region this lake is located in is:

    Mount Dora Ridge (Region 7515)

    The Mount Dora Ridge lake region extends from near the Lake County / Marion County border near Altoona, south to the towns of Eustis and Mount Dora. It is composed of high sand hills, 75-180 feet elevation, with excessively to well-drained acid soils. There are many small, circumneutral, clear lakes of low color, low nutrients, low chlorophyll and moderate to moderately-high alkalinity. Nutrient and color values tend to be slightly less than the adjacent Apopka Upland (to the north and east). The pH, alkalinity, and conductivity are higher than the Lake Weir/Leesburg Upland lake region located to the northwest of the Mount Dora Ridge lake region. Steeply sloping sand hills and old orange groves surround the lakes.

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    Advanced Data Features


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